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Industrial Wastewater Treatment

Ensure instrument reliability, cost efficiency, and compliance of environmental effluent

At Hach®, we embrace the challenge to continuously improve wastewater treatment monitoring equipment and processes to help your industrial plant stay in compliance, and ensure instrument reliability. Best of all, Hach solutions will help control costs while operating at the highest possible levels of health and safety.

Hach has thousands of wastewater treatment solutions for:  

  • Beverage
  • Chemical
  • Petrochemical
  • Food
  • Manufacturing
  • Maritime
  • Metals and Mining
  • Plating
  • Power Generation
  • Pulp and Paper
  • Airports
  • And More!

Hach is committed to being an initiative partner to our customers with Claros™, Hach’s Water Intelligence System. With Claros, you can turn data into actionable insights to then adapt in real-time to variability in the incoming load. Claros also helps you stay in compliance and reduce operating costs with the confidence that your plant is running smoothly.


Industrial Wastewater Treatment: Critical Measurements

Learn which measurements are critical throughout the wastewater treatment process.

Pre-Treatment

Pre-Treatment of Water Used in Production

During the pre-treatment process, various treatment methods will be utilized, depending on the contamination and the concentration of incoming water from the plant's production side. For instance, pH control can be accomplished by adding a chemical to adjust pH for the other steps in the process. Solids may also be removed as a preliminary treatment process. This may include DAF (Dissolved Air Floatation) to remove solids, fats, oils, and/or greases. Some chemical plants may use a DAF as a way of removing chemical contaminants that separate or float. Chemical addition of coagulant also are used in these processes.

We understand your need to measure specific points throughout the wastewater treatment plant. For example, 70% of plants are pre-treatment only and partner with a municipality for the wastewater treatment and 30% have a wastewater treatment plan onsite. Each plant has unique needs, but in general here are the points of measurement you are likely most concerned with:

  • Knowing the pH can help determine the treatment processes required. Certain coagulants may work best at a given pH range so making these adjustments can help improve the process.
  • Identifying the incoming Total Suspended Solids can help determine dosing of those coagulants and air needed to remove the solids. Taking the TSS measurement at the end of the DAF would tell you the efficiency of the process.
  • Total Organic Carbon (TOC) can also be monitored and used for the same type of control depending on the process. Removing as many solids as possible can help maintain the loading and eliminate huge process fluctuations in the biological portion of the plant.

Bulk Tank

The bulk tank is used to hold and equalize the process waste stream. This process helps to gain more stable influent into the wastewater process. Many industrial sites require a bulk tank for firefighting purposes, in the case of a fire emergency. Measurements taken here can give insight as to the treatment processes needed, such as organic loading. Heavier than normal contamination or upset conditions can make for process management issues. Knowing when these are happening can help determine the steps required to maintain control.

Stormwater Tank

Stormwater from a plant can consist of a collection of all water from storms and or potential spills in traffic areas such as loading docks and parking lots. Chemical spills, diesel fuel, gas, oil, and other contaminants need to be monitored and treated before discharged. TOC is becoming very common as a measurement parameter for looking at contaminating levels in these waters. Dissolved oxygen and pH can also give valuable insights into stormwater. During a heavy rain event, larger than usual quantities of water will enter the stormwater tank. This can be good and bad. Dilution of some of the higher contaminated contents helps but it can also make for higher levels of treatment. Separation of high level contaminants can help in the treatment process.

Biological Wastewater Plant

Inlet

During the inlet stage, wastewater is passed through a screen to remove grit and large suspended solids. What is called raw sewage or influent can go through a few different processes depending on what is in the waste stream. Some plants combine process waste with site sanitary sewer. Typically, bar screens are used to remove large contents such as rags, rocks, dirt, and grit from the influent.

Primary Treatment

During primary treatment, primary clarifiers allow organic solids to settle through gravity, while fats, oils, and greases are allowed to float to the surface. The settled solids are referred to as primary sludge and often are thickened in a downstream process before delivery into an anaerobic digester. The floating fat, oil, and grease are collected from the surface and are typically added directly to the anaerobic digester. A typical primary clarifier will remove approximately 70% of the solids and 45% of the Biochemical Oxygen Demand (BOD) from the screened wastewater. Modern facilities that operate enhanced biological nutrient removal processes often extract or ferment the carbon in the primary sludge and dose this side stream into anaerobic or anoxic processes downstream, as a food source for microorganisms.

Having a clear understanding of pH and TSS can be of great help in process control at this stage. However, flow rate changes can have a large impact on process control. High organic loading can also impact the process. Knowing as much about your sample can give the operators the ability to react to those changes.

Secondary Treatment

Secondary treatment removes the soluble organic matter, nutrients such as nitrogen and phosphorus, and most of the suspended solids that escape primary treatment. Most often, biological processes are used in which microbes metabolize organic compounds and nutrients to grow and reproduce. The two most common biological secondary treatment processes are attached to growth and suspended growth systems. A suspended growth process fosters the growth of suspended microorganism flocs from individual organisms already present in the wastewater and in the return activated sludge. The flocs contain organisms that can remove the pollutants through aerobic, anoxic, and anaerobic environments. Once the pollutants are removed, the flocs are sent to a secondary clarification process where they separate from the water via gravity. A portion of sludge in the bottom of the secondary clarifier is then directed back upstream to blend with the primary effluent (Return Activated Sludge) to create mixed liquor. The remainder of the sludge is removed from the process (Waste Activated Sludge) to create the ideal ecology of microorganisms. Attached growth systems rely on the microorganisms to attach to a media and create a biofilm. The settled sewage is either mixed or sprinkled over the biofilm-coated media where the microorganisms remove the pollutants. Like the suspended growth process, biofilm fragments and suspended flocs are sent to a secondary clarifier for separation where sludge is recycled and wasted and clean water is discharged to the next process.

For biological treatment to function efficiently, microorganisms require nutrients in a balanced ratio, including carbon, nitrogen, and phosphorus (referenced as C:N:P), as well as trace elements including iron, copper, zinc, nickel, manganese, potassium, sulfur, and other components which are typically present in wastewater. The commonly accepted C:N:P Ratio is 100:5:1, although some facilities thrive outside of this ratio, while others experience polysaccharide slime formation or filamentous bacteria growth that inhibit the biology and settling in the secondary clarifier.

Multiple biological processes can be employed to complete secondary treatment, including plug flow aeration basins, complete mix aeration tanks, sequencing batch reactors, oxidation ditches, trickling filters, moving bed biological reactors, integrated fixed-film activated sludge, and others.

Biological Nutrient Removal (BNR) alters the environment of the microorganisms to remove nitrogen and phosphorus from the water. A BNR process consists of anaerobic (no oxygen or nitrate), anoxic (no oxygen, nitrate is present), and aerobic (oxygen present) stages, during which the water is moved through a series of chambers to perform various biological functions.

Chemical treatment processes can also be used, such as the chemical removal of phosphorus. By introducing a chemical precipitant within the aeration basin and clarifiers, phosphorus is removed by flocculation, binding into insoluble compounds that settle out and can be removed as sludge.

Sludge Separation

The method for handling the sludge removed from the process depends on the volume of solids as well as other site-specific conditions. Aerobic digestion is often used by facilities less than eight million gallons per day of inflow. Waste Activated Sludge and if present, Primary Sludge, are added to an aerated reactor where microorganisms feast on the organics and microorganisms present in the sludge to reduce the volatile solids content and the overall mass of sludge. Anaerobic digestion is typically used at facilities greater than eight million gallons per day of inflow, and involves the use of sealed reactors to create an anaerobic environment for different organisms to feast on the organics and microorganisms in the sludge through the processes of acidogenesis and methanogenesis. The methane formed by anaerobic digestion can be used to fuel boilers to heat the digester, flared, or cleaned and repurposed as a green energy source. Removal of the heavy solids helps to reduce the load on the plant, leaving only the dissolved and small organics left to treat. Monitoring the sludge levels in the primary clarifiers can determine the rate of removal.

Maintain a healthy sludge level blanket in the clarifier is important for the removal process. Too light a blanket and the process can be upset by the removal arm. Flow rates can be determined by knowing this measurement.

Sludge Management

Thickening involves concentrating the sludge by removing a percentage of the liquid portion by adding polymer compounds and is often employed before anaerobic digestion. Dewatering with belt presses, centrifuges or other means further concentrates sludge into a cake. The cake can be further dried, or simply disposed of through land application or landfills.

Effluent

During the outlet stage, techniques such as filtration, disinfection, and carbon absorption are used to remove the remaining organic load, suspended or dissolved solids, pathogens, and heavy metals that pass through other treatment processes. The goal of this stage is to raise the effluent quality to the level suitable to its intended use, whether for discharge into lakes, rivers, or oceans, reuse as non-crop irrigation (parks, golf courses, greenways, etc), or for groundwater recharge.

Discharge into Receiving Water

A water monitoring station can prepare your plant for safe discharge into receiving waters. While effluent from wastewater treatment facilities is commonly discharged to the environment in rivers, oceans, or other bodies of water, there are a variety of other options for discharge. These include agricultural irrigation; use in parks and recreational facilities (golf courses and sports field irrigation, snow making); wildlife habitat or aquifer/wetland/marsh recharging; industrial uses such as process water; or for street cleaning.


Claros™ Process Management

Continuous Process Management for Industrial Wastewater Treatment

Claros™, the Water Intelligence System from Hach, integrates all plant data sources, including system data, device data, and manually-collected data, dynamically adjusting to changes in your process stream.

Claros provides continuous process management solutions for industrial wastewater applications. Claros allows you to manage your treatment process in real-time, keeping your facility compliant while ensuring efficient plant operation 24/7.

Managing your process has never been so straightforward.



Claros™ Solutions

BOD/COD Removal

Sludge Retention Time (RTC-SRT)

A correct Sludge Retention Time and Mixed Liquor Suspended Solids level in the aeration basin is fundamental for compliance and energy efficient treatment. Hach’s RTC-SRT system automatically adjusts the waste activated sludge to provide the ideal SRT and MLSS concentration ensuring stable BOD/COD removal and avoiding undesired nitrification.

Nutrient Dosing (RTC-C/N/P)

Having the correct C/N/P balance is critical for biological wastewater treatment. Hach’s RTC C/N/P system optimizes the dosing of nutrients like urea and phosphoric acid in industrial wastewater treatment plants, ensuring compliance on COD / BOD, NH4 and PO4. Cost for effluent discharges and on chemicals added are driven to an absolute minimum.

Most Open Valve DO Control (RTC-MOV)

Energy efficient aeration systems (blowers and valves) provide and distribute the process air at a minimum air pressure in the manifold and a minimum pressure loss across the air valves. The Hach RTC-MOV system controls the Dissolved Oxygen (DO) concentration in up to 16 different zones by providing set points for the corresponding air valve positions and for the manifold pressure (or airflow). The result is reduced costs and maximum available process air where it is needed most.

Nitrification/ Denitrification

Sludge Retention Time (RTC-SRT)

A correct Sludge Retention Time and MLSS level in the aeration basin are fundamental for compliance and energy efficient treatment. Hach’s RTC-SRT system automatically adjusts the waste-activated sludge to provide the ideal SRT and MLSS concentration, thus ensuring stable Nitrification all year round.

Phosphorus Removal

PO 4-P Precipitation (RTC-P)

Meeting the Total Phosphorus (TP) limit in the effluent of plants with chemical PO 4-P elimination can be very challenging. Varying inflow loads can hardly be managed with a fixed dosing rate of precipitant. Based on the measured PO 4-P, the RTC-P system calculates a setpoint for the precipitant dosing rate, ensuring fast reaction on inflow changes and precise control of the PO 4-P concentration to a desired setpoint. Through this, compliance on TP is supported while cost on precipitant and the amount of precipitation sludge is minimized.

CASE STUDY: RTC-P Brings Phosphorus Compliance Solution to JBS Beef Processing

Discharge into Receiving Water

Sludge Thickening (RTC-ST)

Meeting the Total Phosphorus (TP) limit in the effluent of plants with chemical PO 4-P elimination can be very challenging. Varying inflow loads can hardly be managed with a fixed dosing rate of precipitant. Based on the measured PO 4-P, the RTC-P system calculates a setpoint for the precipitant dosing rate, ensuring fast reaction on inflow changes and precise control of the PO 4-P concentration to a desired setpoint. Through this, compliance on TP is supported while cost on precipitant and the amount of precipitation sludge is minimized.

CASE STUDY: RTC-ST Adjusts Coagulant Dosage, Lowers Operating Costs While Controlling TSS and pH Levels
CASE STUDY: Real-Time Control System Optimizes Phosphorus Removal in the Dairy Industry

Sludge Dewatering (RTC-SD)

Low cost for sludge disposal, minimum negative impact on returns, and low polymer consumption are core objectives in sludge dewatering. The RTC-SD system can achieve this by managing Total Suspended Solids (TSS) in thickened sludge and centrate by adjusting polymer dosing.

Dissolved Air Flotation (RTC-DAF)

High Total Suspended Solids (TSS) concentration in the sludge and low TOC/TSS concentration in treated effluent are core objectives in Dissolved Air Flotation (DAF). This can be achieved with the RTC-DAF system which controls TSS in the thickened sludge and discharge effluent by correctly adjusting pH, coagulant and polymer dosing.

APPLICATION NOTE: Advanced On-line Instrumentation Helps DAF Systems Lower Costs

Wastewater sensor, controller, and Hach Mobile Sensor Management Software

Data Quality with Mobile Sensor Management

Quick Status Check

Many plant managers have concerns about trusting their data. Hach customers typically trust their data after just three short weeks of adopting Claros process management solutions.

Mobile Sensor Management allows you to view your measurements and instrument status—anytime, anywhere on any web-enabled device. The included Prognosys Predictive Diagnostic Software monitors the instrument’s internal components and tracking service requirements. Then, Mobile Sensor Management alerts you to upcoming maintenance tasks or identifies immediate issues requiring attention. It also provides simple maintenance instructions in the palm of your hand to give operators and plant managers the confidence that the maintenance is being done correctly.

Avoid Downtime

With Mobile Sensor Management, you can avoid unexpected downtime and have confidence in your water quality measurements.

Worry-Free Data Security

Keep Your Data Safe

Data security is our priority. Hach is committed to protecting the integrity of your data, with comprehensive data security processes, continual evaluation, and best-in-class partners such as Microsoft Azure to ensure data sovereignty and to eliminate opportunities for external intrusion. From data generation to transmission, storage, and retrieval, Hach is committed to keeping your data safe, now and into the future


Suspended solids measurement in DAF operations-1

Lower Operating Costs While Controlling TSS and pH Levels

Control operating costs. Read this application note to learn how advanced on-line instrumentation provides continuous, real-time suspended solids measurement in DAF operations.

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Real-Time Control System Optimizes Phosphorus Removal in the Dairy Industry

Don't let your chemical costs get out of control. Learn how one large dairy facility lowered chemical costs and reassigned some of their utilities mechanics' and operators' time to more productive tasks.

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Aerial view of beef processing plant using phosphorus control system

RTC-P Brings Phosphorus Compliance Solution to JBS Beef Processing

Take control of compliance challenges. Learn how JBS Beef Processing met total phosphorus compliance standards without a single violation after implementing the Real-Time Control Phosphorus system.

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Wastewater equipment at industrial facility using DAF system

Advanced On-line Instrumentation Helps DAF Systems Lower Costs

There are many facets to industrial processes — raw materials, skilled labor, well-designed equipment, and sound methodologies. Here are several guidelines for implementing continuous monitoring to keep process integrity at optimum levels.

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Industrial Wastewater Parameters

A variety of parameters are used in industrial wastewater pre-treatment, biological wastewater monitoring, and receiving water discharge. Browse the cards below to learn more about why these parameters matter. Or choose Explore Solutions Now to see solutions.

Explore Solutions Now
AL

Alkalinity

Measuring alkalinity in water will inform its capacity to neutralize acids or absorb hydrogen ions. A slightly alkaline pH is important for effective biological treatment. The process of nitrification destroys alkalinity, which can result in a drop in pH, which will inhibit bacteria. Having visibility into your alkalinity will help avoid permit violations for ammonia and or pH.

AM

Ammonia

Monitor conversion of ammonia and organic nitrogen forms to nitrite and nitrate during the WW treatment process. Provides information on process conditions in biological treatment stages. At high concentrations and pH, ammonia can be toxic to sludge digestion microbes.

AS

Automatic Sampling

Automatic samplers are required to pull samples from different locations within a process so that laboratory tests can be performed. Samples may be collected as a composite or discreetly, depending on site and permit requirements.

BC

BOD5 and CBOD

BOD5 and CBOD indicate a relative measure of “food” available, the degree of stabilization of the wastewater, and estimate the effect of the effluent on the receiving water body. Used for plant loading/design, discharge rate for industrial facilities, and EPA NPDES reporting. Many plants use COD or TOC as an early estimate. Used to calculate % removal.

COD

Chemical Oxygen Demand

Used as a correlative/early indicator of BOD levels. Some NPDES permits include COD as a surrogate for BOD; however, BOD is the standard reportable parameter for oxygen demand in wastewater. COD provides a measure of organic “food” available to biological treatment steps and to estimate the effect of discharge to receiving water.

CTU

Chlorine Total and ULR

Chlorine is added to kill pathogens and reduce odor. Measuring chlorine will help ensure that your wastewater is properly disinfected by removing pathogens as well as satisfy regulations that require the removal of excess chlorine before discharge to surface waters.

CL

Color

Color can be an indicator of turbidity or suspended matter. The removal of this matter can be gauged by measuring color, which can indicate if the water quality is suitable for discharge.

CN

Conductivity

Measuring conductivity is a common method for determining the metal concentration in wastewater. Removal of these metals prevents environmental concerns. Conductivity is also an indicator of dissolved sodium which can assess stages of the treatment process that cause changes in conductivity.

DO

Dissolved Oxygen

To stay alive, the organisms that breakdown organic matter rely on oxygen. When there is not dissolved oxygen present, these organisms will die. On the other hand, too much oxygen could signify that your wastewater treatment process is wasting energy. Measuring dissolved oxygen levels can help dial in the right amount of aeration.

FM

Flow Meters

Flow measurement is crucial to a plant to know the volume and rate of the liquid passing through each process. These measurements are used to calculate loading and concentration factors for processing.

NT

Nitrate

Nitrate is indicative of the stage of conversion of ammonia and organic nitrogen forms to nitrate by the aerobic biological treatment steps (nitrification).

OA

Organic Acid

Determine if acidification has occurred during the effluent pre-treatment stage of your treatment process by monitoring pH and alkalinity. Making adjustments to pH and alkalinity balances organic acid.

OL

Organic Load

Indicates the amount of carbon nutrients required to feed and keep healthy the microorganisms in the process aeration basin. This parameter gives an indication of efficiency of the anaerobic digester process.

OR

ORP / Redox

Oxidation Reduction Potential is the ability for a solution to accept or lose electrons, and therefore be “reduced.” ORP can help determine whether activated sludge zones are anaerobic or anoxic to enhance biological nutrient removal. They are best applied as a trending tool.

pH/T

pH/Temperature

Maintain proper (narrow) pH range for optimal biological processes—especially nitrification. pH and temperature can indicate plant upsets by industrial discharges or the development of anaerobic conditions within the plant. It’s also an important parameter to assess methane formation and avoiding ammonia toxicity in sludge digesters.

PO

Phosphate / Ortho

Phosphate is removed via biological nutrient removal processes and/or chemical precipitation. Reactive (ortho) phosphate is the phosphorus form that is most available to biological species.

SL

Sludge Level

Having a clear measurement of sludge helps monitor sludge levels in the aeration tank, where sludge is mixed with air to breakdown organic matter. Monitoring sludge levels can indicate sludge buildup, process and chemical efficiency, and sludge settleability.

SAC

Spectral Absorption Coefficient

Measuring Spectral Absorption Coefficient is excellently suited to use as a regulation parameter for an ozone system.

TN

Total Nitrogen

Total of ammonia, nitrate, nitrite, and organic nitrogen forms.

TOC

Total Organic Carbon

TOC levels in water impact treatment and re-use decisions. With data on TOC levels, water managers can make the most efficient and cost-effective decisions for treatment and reuse of important water supplies.

TP

Total Phosphorus

Phosphorus effluent concentrations are often controlled by discharge permits to limit the addition of nutrients to the receiving body. Total phosphorus may be removed either biologically or chemically. It includes ortho-, poly-, and organic phosphorus.

TSS

Total Suspended Solids

TSS is the most commonly measured and regulated parameter on NPDES permits. Used to measure mixed liquor suspended solids concentration, return activated sludge/waste activated sludge concentration, influent suspended solids concentration, effluent suspended solids concentration, and % removal.

TX

Toxicity

COD is the sum parameter that provides the most reliable and timely information about the oxygen-depleting effects of organic pollutants in wastewater. COD also supplies an estimate of the effect of your plant’s effluent on the receiving body.

TR

Turbidity

Turbidity is a surrogate measurement for solids concentration. This parameter often is used to indicate solids carry-over from secondary clarifiers.


Watch Webinar On-Demand: Industrial Wastewater – innovative solutions for real-time management, online monitoring, and connected data



Are you prepared for the unknowns of tomorrow in your wastewater stream? Watch this webinar to learn about innovative solutions to take control of your wastewater treatment plant and pretreatment processes—from dosing to downtime and everything in between with solutions that provide real-time information, connected data, and online monitoring.



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Request Info
 

Select the attributes below to find the right industrial wastewater product for you.

Hach has a range of industrial wastewater solutions that can work in combination to ensure confidence in the quality of your wastewater effluent. In addition, we have lab, online, and portable solutions for various parameters so you can test your water quality anywhere.

 

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Looking for a specific parameter?

Titralab® AT1000 & KF1000 Series

The AT1000 and KF1000 instruments are one touch, automatic laboratory analyzers covering both Potentiometric Titration (AT1000 Series) and Karl Fischer Volumetric Titration (KF1000 Series).

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HQ Series/HQD Meters/Intellical Probes

The rugged and durable HQD® portable meters and laboratory meters are designed to give drinking water and wastewater professionals the greatest confidence and flexibility.

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Intellical Probes

Red Rod pH probes offer exceptional performance and response time across a wide variety of sample types in the laboratory. Rugged stainless steel outdoor probes are extremely practical for on-site analysis.

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DR6000 Benchtop Spectrophotometer

Designed to deliver accurate results and perform with the TNTplus (utilizing the new Truecal™ software) offering: reduced handling steps, precise dosing, automatic test recognition, and expiration date check.

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DR3900

Designed to deliver accurate results and perform with the TNTplus (utilizing the new Truecal™ software) offering: reduced handling steps, precise dosing, automatic test recognition, and expiration date check.

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DR1900 Portable Spectrophotometer

The DR1900 excels in the field because it is the lightest and most compact portable spectrophotometer. Your field testing takes you to potentially dusty and wet conditions where other equipment simply won’t be safe.

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DR900 Colorimeter

The DR900 portable colorimeter allows for quick and easy access to your most frequently used testing methods in less than four clicks. This colorimeter is waterproof, dustproof, shock resistant, and has been drop tested for greater quality assurance.

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DR300 Pocket Colorimeter

Single Parameter go-anywhere portable photometer, battery operation for a maximum of 5000 tests, waterproof instrument IP67 (even better than PCII), larger, better display, data connectivity, and Bluetooth to Claros

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SL1000 Portable Parallel Analyser (PPA)

The Hach SL1000 Portable Parallel Analyzer (PPA) performs the same tests with less than half the manual steps. Get highly accurate results, with less opportunity for errors, in a fraction of the time.

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Test Kits

Hach offers a wide range of kits, from easy-to-use, single parameter color comparators to comprehensive portable laboratories with advanced instrumentation — for fast, accurate results in the field or lab.

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Digital Titrator Test Kits

Hach digital titrators use a high-precision dispensation device and replaceable titrant cartridges for highly accurate results in the field or lab.

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TL23 Series Laboratory Turbidimeters

The TL23 Series ensures stable readings and accurate analysis by capturing turbidity readings once the device detects sample stability.

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2100Q Portable Turbidimeter

The 2100Q portable turbidimeter provides convenient data logging. Up to 500 measurements are automatically stored in the instrument for easy access and backup.

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TU5 Series Laboratory Turbidimeters

The TU5200 is designed to deliver a revolutionary 360° x 90° Detection™ Technology, engineered to see more of your sample than any other turbidimeter.

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Conductivity Sensors

Hach's family of Industrial Conductivity Sensors use innovative technology to eliminate the polarization and electrode coating problems common in harsh, industrial environments.

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pH & ORP Sensors

Hach offers a variety of analog and digital pH sensors and ORP sensors to meet your application needs for inline pH or ORP monitoring of water or other fluids.

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Differential ORP Sensors

The Sensors feature exceptional performance due to the Differential Electrode Measurement Technique.

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EZ Series Alkalinity Analysers

The EZ Series Online Analyzers offer multiple options to monitor Alkalinity in water. Typical applications are wastewater, drinking water, steam & power generation, and surface water.

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EZ Series Aluminium Analysers

The EZ Series Online Analyzers offer multiple options to monitor Aluminium in water. Typical applications are wastewater, drinking water, steam & power generation, surface water.

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Amtax sc Ammonium Analyser

Hach's Amtax sc digital on-site analyzer with gas sensitive electrode is designed for the high precision determination of ammonium concentration directly at the tank.

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CL17sc Colorimetric Chlorine Analyzer

The industry standard Hach CL17sc Colorimetric Chlorine Analyzer uses colorimetric DPD chemistry to continuously monitor water for free or total chlorine.

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CL10sc Amperometric Chlorine Analyzer

The CL10 sc reagentless chlorine analyzer allows for real-time control of disinfection processes by providing continuous readings that indicate when treatment conditions have changed.

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9184sc Amperometric Chlorine Analyzer

The 9184 sc free chlorine sensor is ideal for drinking water distribution monitoring, chlorination applications, demineralizer systems, wastewater...

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9187 sc Chlorine Dioxide Analyser

The 9187 sc Chlorine Dioxide (ClO2) Sensor is an online, single-channel industrial sensor that measures ClO2 in drinking water treatment plants...

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9185 sc Amperometric Ozone Sensor

The 9185 sc ozone sensor is an online, single-channel industrial sensor that measures ozone in drinking water treatment plants, distribution networks...

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LDO 2 sc Luminescent Dissolved Oxygen Sensors

Hach’s next generation LDO® (Luminescent Dissolved Oxygen (DO)) is ready to start measuring your DO (Dissolved Oxygen (DO)) right out of the box.

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Orbisphere K1100/K1200 Oxygen Sensors

Orbisphere K1x00 Sensors are maintenance-free, optical Luminescent Dissolved Oxygen (DO) Sensors designed for monitoring oxygen in power plants.

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Orbisphere M1100 Oxygen Sensors

The Orbisphere M1100 optical sensor, together with the Orbisphere 410 one channel and the Orbisphere 510 multi-channel controller, offers a new way of monitoring oxygen.

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EZ Series Fluoride Analysers

The EZ Series Online Analyzers offer multiple options to monitor Fluoride in water. Typical applications are wastewater, drinking water, process water and surface water.

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CA610 Fluoride Analyzer

The CA610 Fluoride Analyzer uses advanced ion-selective electrode (ISE) technology for continuous monitoring of fluoride concentration in drinking water effluent.

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SP510 Hardness Monitor

The Hach SP510 Hardness Monitor continuously monitors water systems to provide an alarm when total hardness exceeds a pre-set limit (eight alarms are available).

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EZ Series Hardness Analysers

The EZ Series Online Analyzers offer multiple options to monitor Total Hardness and Calcium Hardness in water.

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EZ Series Total Nitrogen Analysers

The EZ Series Online Analyzers offer multiple options to monitor Total Nitrogen in water.

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Nitratax sc Nitrate Sensors

Hach's Nitratax sc Family includes digital, optical probes for the high precision determination of nitrate concentration directly in the medium.

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2200 PCX Particle Counter

The Hach model 2200 PCX is the first particle counter designed specifically to meet the unique requirements of water treatment. The model 2200 PCX can be integrated into your...

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5500sc Phosphate Analyser

The 5500 sc Phosphate Analyzer requires only two liters of reagent for the analyser to perform unattended for up to 90 days; twice as long as the Series 5000.

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EZ Series Phosphate Analysers

The EZ Series Online Analyzers offer multiple options to monitor Phosphate in water. Typical applications are wastewater, drinking water, steam & power generation, surface water.

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Phosphax sc Phosphate Analyser

Hach's digital on-site analyzer Phosphax sc with weather proof housing is ideal for the high precision determination of Ortho-Phosphate concentration directly at the tank.

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Filtrax (eco) Sample Filtration Systems

The Filtrax and Filtrax eco Sample Filtration Systems continually extract samples directly from process effluent and pull the water through ultra-filtration membranes (0.15 µm) that are...

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Hach BioTector B3500dw TOC Analyser

The Hach BioTector B3500dw uses patented technology that only requires scheduled maintenance every 6 months and delivers 99.86% uptime ensuring total confidence in your TOC measurement. 

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Hach BioTector B7000i TOC Analyzer

Lab analysis is a great tool for reporting TOC and with online analysis issues can be caught 20x to 1000x faster than with lab techniques.

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UVAS plus sc Sensor

Hach's UVAS plus sc digital UV probe is designed for the reagent-free determination of the organic load via the spectral absorption coefficient (SAC) in the medium or in the bypass.

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EZ Series TOC Analysers

The EZ Series Online Analyzers offer multiple options to monitor Total Organic Carbon (TOC) and Total Carbon (TC) in water. Typical applications are wastewater and surface water.

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ULTRATURB Seawater sc with 50m Cable

Turbidities in the range of FNU (NTU) 0.0001-1,000 are measured and displayed alphanumerically using a controller. This high resolution facilitates precision differentiation, even for ultra clear liquids.

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TSS sc Sensors

Hach's TSS sc are digital special probes for determining turbidity and suspended solids in aqueous, and also aggressive, media, in accordance with DIN EN ISO.

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Solitax sc Sensors

Using the infrared duo scattered light method Solitax sc provides a unique colour independent measurement of solids and a reliable sludge analysis.

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TU5300sc/TU5400sc Online Laser Turbidimeters

The TU5 Series platform employs a patented optical design that sees more of your sample than any other turbidimeter, delivering the best low level precision and sensitivity while minimizing variability between measurements.

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Surface Scatter 7 sc High Range Turbidimeter

The Surface Scatter 7 sc High Range Turbidimeter offers superior performance across a measurement range of 0 to 9999 NTU and is the original non-contact turbidimeter.

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AF7000 Streaming Current Monitor

For optimization of coagulation processes in drinking water, the Hach AF7000 Streaming Current Monitor was designed with serious durability in mind, utilizing an industrial sized motor and...

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EZ Series Iron Analysers

The EZ Series Online Analyzers offer multiple options to monitor Iron in water. Typical applications are wastewater, drinking water, steam & power generation, surface water.

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EZ Series ATP Analysers

The EZ7300 Series Analyzers offer online monitoring of microbial load in water via ATP (adenosine triphosphate). Typical applications are process water, drinking water, steam & power generation.

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EZ Series Manganese Analysers

The EZ Series Online Analyzers offer multiple options to monitor Manganese in water. Typical applications are wastewater, drinking water, steam & power generation, surface water.

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EZ Series COD Analysers

The EZ Series Online Analyzers offer multiple options to monitor Chemical Oxygen Demand (COD) in water. Typical applications are wastewater and surface water.

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EZ Series Sulphide Analysers

The EZ Series Online Analyzers offer multiple options to monitor Sulfide in water. Typical applications are wastewater, drinking water, surface water.

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Water Distribution Monitoring Panel

The Water Distribution Monitoring Panel consists of normal water quality parameters that can be used on virtually any finished water application and are useful for monitoring water quality...

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EZ Series Alkalinity Analysers

The EZ Series Online Analyzers offer multiple options to monitor Alkalinity in water.

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EZ Series Ammonium Analysers

The EZ Series Online Analyzers offer multiple options to monitor Ammonium in water.

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EZ Series Arsenic Analysers

The EZ Series Online Analyzers offer multiple options to monitor Arsenic in water.

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EZ Series Boron Analysers

The EZ Series Online Analyzers offer an option to monitor dissolved Boron in water.

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The EZ Series Online Analyzers offer multiple options to monitor Cadmium in water.

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EZ Series Chloride Analysers

The EZ Series Online Analyzers offer multiple options to monitor Chloride in water.

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EZ Series Chlorine Analysers

The EZ Series Online Analyzers offer multiple options to monitor Chlorine in water.

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EZ Series Chromium Analysers

The EZ Series Online Analyzers offer multiple options to monitor Chromium in water.

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EZ Series Colour Analysers

The EZ Series Online Analyzers offer an option to monitor Colour (Platinum-Cobalt Scale) in water.

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EZ Series Copper Analysers

The EZ Series Online Analyzers offer multiple options to monitor Copper in water.

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EZ Series Cyanide Analysers

The EZ Series Online Analyzers offer multiple options to monitor Cyanide in water.

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EZ Series Hydrogen Peroxide Analysers

The EZ Series Online Analyzers offer an option to monitor Hydrogen Peroxide (H₂O₂) in water.

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The EZ Series Online Analyzers offer multiple options to monitor Lead in water.

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The EZ Series Online Analyzers offer multiple options to monitor Mercury in water.

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EZ Series Nitrate Analysers

The EZ Series Online Analyzers offer multiple options to monitor Nitrate in water.

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EZ Series Phenol Analysers

The EZ Series Online Analyzers offer an option to monitor Phenol in water.

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EZ Series Sample Preconditioning

EZ Series Analyzers can be combined with sample preconditioning units for external dilution or filtration to meet the requirements of the individual application.

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EZ Series Silica Analysers

The EZ Series Online Analyzers offer multiple options to monitor Silica in water.

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EZ Series Sulphate Analysers

The EZ Series Online Analyzers offer multiple options to monitor Sulphate in water.

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EZ Series Total Nitrogen Analysers

The EZ Series Online Analyzers offer multiple options to monitor Total Nitrogen in water.

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EZ Series Total Phosphorus Analysers

The EZ Series Online Analyzers offer multiple options to monitor Total Phosphorus in water.

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EZ Series Toxicity Analysers

The EZ Series Online Analyzers offer an option to monitor Toxicity in wastewater.

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EZ Series Zinc Analysers

The EZ Series Online Analyzers offer multiple options to monitor Zinc in water.

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FP360 sc Oil in Water Sensor

The FP360 sc digital UV fluorescence probe is designed for the reagent-free determination of mineral oil impurities directly in the medium or in the bypass.

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3700sc Digital Inductive Conductivity Sensors

Hach’s Inductive Conductivity Sensors measure 200 up to 2,000,000 microSiemens/cm. A built-in Pt 1000 RTD compensates the measured conductivity for changes in process temperature.

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NA5600sc Sodium Analyser

Be confident in your steam cycle water with proprietary predictive diagnostic tools, automatic electrode reactivation to avoid downtime, less maintenance with 90-day reagent replacement, and a convenient small footprint for easy integration with the new Hach NA5600sc Sodium Analyzer.

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Orbisphere 312xx Hydrogen Sensors

The Orbisphere patented Thermal Conductivity sensor has been developed to give continuous H2 measurements in gas phase or dissolved in a liquid.

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Digital Differential pH Sensors

The inline process pH sensors feature exceptional performance due to the Differential Electrode Measurement Technique uses three electrodes instead of the two electrodes, resulting in unsurpassed measurement accuracy, greater reliability, and less downtime and maintenance.

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Sonatax sc Sensor

The digital ultrasonic probe Sonatax sc continuously measures the sludge level or the sludge height.

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3400sc Digital Contacting Conductivity Sensors

These enhanced performance sensors are manufactured to exacting tolerances using high quality, rugged materials for demanding applications including ultra-pure water, clean-in-place (CIP), and boiler/condensate monitoring.

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3700sc Digital Inductive Conductivity Sensors

Hach’s Inductive Conductivity Sensors measure 200 up to 2,000,000 microSiemens/cm.

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Orbisphere 410/510 Carbon Dioxide Controllers

The ORBISPHERE 410 and 510 controllers offer precise process monitoring capability.

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5500sc Phosphate Analyser

The 5500 sc Phosphate Analyzer requires only two liters of reagent for the analyser to perform unattended for up to 90 days; twice as long as the Series 5000.

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8362 sc High Purity Sensors

pH and ORP sensor for high purity, low conductivity applications, ideal for the power, pharmaceutical, and electronics industries.

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9525 sc Degas Cation Conductivity System

An integral part of the most complete water analytics system for the Power industry.

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Polymetron 9586sc Oxygen Scavenger Analyser

The 9586 sc Oxygen scavenger analyser has a fast response time of less than 60 seconds.

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A-ISE sc Sensors

Hach's digital, ion-selective A-ISE sc probe is designed for the determination of ammonium concentration directly in the medium.

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AN-ISE sc

Hach's digital AN-ISE sc Combination Sensor for Ammonium and Nitrate carries out continuously direct measurements using an ion-selective electrode.

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AS950 Peristaltic Samplers

Hach AS950 Automatic Samplers collect and store representative water samples for accurate laboratory analysis.

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Hach BioTector B3500c TOC Analyser

TOC monitoring is one of the best tools and insights to maintain clean and compliant water streams at many different points in your proces.

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Hach BioTector B3500e TOC Analyser

TOC monitoring is one of the best tools and insights to maintain clean and compliant water streams at many different points in your proces.

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Hach BioTector B3500ul TOC Analyser

TOC monitoring is one of the best tools and insights to maintain clean and compliant water streams at many different points in your proces.

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Hach BioTector B7000 TOC/TN/TP Analyser

TOC monitoring is one of the best tools and insights to maintain clean and compliant water streams at many different points in your proces.

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Hach BioTector B7000i Dairy TOC Analyser

TOC monitoring is one of the best tools and insights to maintain clean and compliant water streams at many different points in your proces.

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Hach Online Process ORP Sensor - General Purpose Digital ORP Sensor

General Purpose Online Process ORP Sensor with Integrated Digital Electronics for 'Plug and Play' with Hach sc Digital Controllers - Platinum ORP Electrode, PEEK Housing, Convertible Mount, 10m Cable.

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BARTS Biodetectors

Biological Activity Reaction Test (BART) biodetectors are excellent microbiological diagnostic tools used to identify the presence of process disruptors.

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LuminUltra ATP Testing

Hach proudly carries LuminUltra's complete line of free and total ATP testing solutions.

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Service & Support

Hach Support Online (HSO) pools more than 80 years of water analysis knowledge into a powerful global community. Flowing directly into our customer and technical support teams, this dynamic resource delivers real-time answers, user-friendly search tools, multiple types of content, and easy ways to connect with Hach experts. With HSO, you get the information you need and together, we can ensure water quality for people around the world.

Hach Training Center provides relevant, hands-on training to your team, giving them the experience they need to master various theories and techniques—and produce results you can trust for quality assurance, environmental safety, and regulatory compliance. Hach experts offer a large course catalog of workshop training, personalized training, and digital learning designed to increase proficiency and confidence for plant operators, instrument and field technicians, laboratory personnel, and plant managers and superintendents.

Hach ServicePlus® Programs have been developed to help solve your maintenance and support problems. Whether it’s a lack of resources or skills, an instrument that is down, compliance concerns or the need for a predictable budget, we have programs to fit the unique challenges you face in your organization.