Pulp and Paper Mills

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Gain continuous control over your pulp and paper manufacturing process.

The pulp and paper industry is one of the largest industrial consumers of water, requiring 17,000 gallons per ton of paper. Aside from wood fibers, water is the most important raw material in the pulp or paper mill. Simply put, pulp and paper manufacturing is impossible without water at every step of the production process—in specific tasks from pulping and bleaching to slurry dilution and fabric showers, in steam and power production for thermal and mechanical processes, as well as general operation uses such as materials transport and equipment cleaning.

Hach ® offers comprehensive water analysis solutions to paper mills, including manufacturers of corrugated paper, corrugated cardboard, tissue mills, kraft mills, and non-woven manufacturers of products such as baby diapers, disinfection wipes and more. Despite the broad range of paper product applications, the entire pulp and paper industry shares two main goals when it comes to water use: conserve fresh water by reusing as much process water as possible, and treat wastewater to comply with regulations and protect local resources. To accomplish this, having reliable tools and data is key.

From laboratory analysis to process solutions, Hach’s accurate, easy-to-maintain instrumentation, comprehensive test kits and high-quality prepared reagents are based on nearly a century of innovation and a desire to provide the simplest way to results pulp and paper companies can trust.

Our products, application support and local service can help your pulp and paper mill to:

  • Maintain quality by ensuring your output meets product specifications
  • Maximize uptime of equipment and production
  • Maintain regulatory compliance with legal limit values
  • Assure process optimization with real time control (RTC)
  • Optimize resources by minimizing product loss and maximizing pulp yield
  • Protect your investment via process efficiency and prolonged plant life

By partnering with Hach in process monitoring and laboratory verification, you’ll assure maximum uptime through preventative protection, risk mitigation, and superior service.



Water Supply Conditioning

Because more than 90% of water used in the paper making process is sourced from the local environment, incoming water quality, including organic content, chemistry, dissolved oxygen and flow, varies with the weather and the seasons. Confident measurement and management of fresh water enables efficient, cost-effective production of high quality pulp and paper, whereas poor or unknown water quality creates costly consequences. Real-time analysis starting at raw water intake enables pulp and paper mills to:

  • Optimize biocide/disinfectant dosage
  • Detect changes to incoming water quality and take preventive action (e.g. the addition of chlorine to minimize bacterial and slime growth)
  • Monitor plant efficiency and production performance
  • Guard against in-plant corrosion and in-plant scale
  • Check potential of non-ionic inorganics to cause in-plant deposits
  • Assure effective filtration

Parameters Relevant to Water Supply Conditioning

  • cog icon flask iconATP
  • cog icon flask iconColor
  • cog icon flask iconFree chlorine, total chlorine
  • cog icon flask iconHardness
  • cog icon flask iconIron
  • cog icon flask iconManganese
  • cog icon flask iconpH value
  • cog icon flask iconSilica
  • cog icon flask iconTotal Organic Carbon (TOC)
  • cog icon flask iconTurbidity and Total Suspended Solids (TSS)

How to Measure:

  • BioTector B7000i TOC Analyzer
  • BioTector B7000e TOC Analyzer
  • CEL Water Conditioning Laboratory
  • Deluxe Water Conditioning Demonstration Kit
  • Pocket Colorimeter
  • CL17 Colorimetric Chlorine Analyzer
  • CLF10 Free Chlorine Analyzer
  • EZ 2303 Total Manganese
  • EZ 2305 Total Iron
  • EZ 5001 Free Alkalinity Analyzer
  • PHD sc Differential pH Sensors
  • LuminUltra ATP Test Kits
  • SP 510 Hardness Monitor
  • Solitax SC Turbidity Immersion Probes
  • SS7 sc High Range Turbidimeter
  • TU5300/400 Turbidimeters
  • 5500 sc Silica Analyzer
Pulp_Paper-Mill_Paper_Factory_Steam_Night_480x374.jpg
cog icon

Process solutions include online sensors that provide round-the-clock support for critical operational and process decision making.

flask icon

Laboratory solutions include simple, reliable and accurate tests that support quality and compliance decision making.

Steam & Power

Because of the energy consumed to heat, pump and circulate water, and because of the key machinery at risk of scale and corrosion, careful analytics at this stage is a high-value priority. Additionally, because water is demineralized, treated and reused throughout the papermill, changes to parameters during steam generation have costly repercussions: boiler feed water must be purified to minimize corrosion, while treated steam condensate can be reused in the steam system. Continuous monitoring enables your operation to make informed process decisions and manage costs by:

  • Monitoring oxygen scavengers and controlling oxygen scavenger dosing to avoid corrosion as well as overdosing
  • Controlling the addition of phosphate to reduce corrosion and deposits
  • Avoiding damage to turbines and tubes caused by precipitates
  • Detecting efficiency loss in ion exchangers or membrane systems used for pre-treatment

Parameters Relevant to Water Supply Conditioning

  • cog icon flask iconCationic Conductivity
  • cog icon flask iconDegassed Cationic Conductivity
  • cog icon flask iconHydrazine
  • cog icon flask iconLaser Turbidity / Iron Transport
  • cog icon flask iconOxygen
  • cog icon flask iconpH
  • cog icon flask iconPhosphate
  • cog icon flask iconSilica
  • cog icon Sodium
  • cog icon flask iconSpecific Conductivity
  • cog icon flask iconTotal Organic Carbon (TOC)

How to Measure:

  • BioTector B7000i TOC Analyzer
  • BioTector B7000e TOC Analyzer
  • 8362 sc High purity pH and ORP Sensor
  • 9586 Oxygen Scavenger Analyzer
  • 9523 Specific and Cationic Conductivity Analyzer
  • 9525 Degassed Cationic Conductivity Analyzer
  • TU5 Turbidimeter
  • 9240/9245 Sodium Analyzer
  • 3400 Digital Contacting Conductivity Sensors
  • 3400 Analog Contacting Conductivity Sensors
  • 5500 sc Silica Analyzer
  • 5500 sc Phosphate Analyzer
Pulp_Paper-Mill_Paper_Plant_Smokestack_480x319.jpg
cog icon

Process solutions include online sensors that provide round-the-clock support for critical operational and process decision making.

flask icon

Laboratory solutions include simple, reliable and accurate tests that support quality and compliance decision making.

Paper Machine Wet End Operations Monitoring

Measuring at the approach system and at the whitewater loops of the paper machine helps ensure optimum operation to achieve the specifications of the paper pulp and paper grade produced, as well as recuperation of raw stock/energy from the saveall. Approach system and whitewater loops quality analysis enables:

  • Monitoring for optimal chemical reactions at the wet end and formation of the sheet
  • Controlling coagulant and polymer dosage
  • Online calculation of the first pass retention
  • Optimization of the saveall operation for water, heat, chemicals, filler, and fiber recovery
  • Early detection of calcium and magnesium that shorten the life of costly equipment
  • Fast microbiology analysis to monitor biocide program efficiency

Parameters Relevant to Paper Machine Wet End Operations Monitoring

  • cog icon flask iconATP
  • cog icon flask iconFree chlorine, total chlorine
  • cog icon flask iconORP
  • cog icon flask iconpH value
  • cog icon flask iconSolids
  • cog icon Starch
  • cog icon Sulfate
  • cog icon flask iconTotal Hardness (TH)
  • cog icon flask iconTotal Organic Carbon (TOC)

How to Measure:

  • BioTector B7000i TOC Analyzer
  • BioTector B7000e TOC Analyzer
  • TSS sc Sensors
  • RTC-ST Sludge Thickening Software
  • PHD pH and ORP Differential Sensors
  • LuminUltra ATP Test Kits
  • Pocket Colorimeter
  • Intellical ORP/pH Sensors
Pulp_Paper-Mill_Wet-End_Paper-Machine_480x354.jpg
cog icon

Process solutions include online sensors that provide round-the-clock support for critical operational and process decision making.

flask icon

Laboratory solutions include simple, reliable and accurate tests that support quality and compliance decision making.

Primary & Secondary Wastewater Treatment

Because 90% of the water used in a paper mill is returned to its source, meticulous water treatment before discharge is essential. Assure pulp and paper effluent complies with regulations by monitoring and optimizing primary and secondary wastewater treatment. Save energy and chemicals with real-time adjustments based on accurate data. Hach instrumentation and solutions enable:

  • Optimization of primary/secondary clarification
  • Optimization of flocculation and sludge dehydration process
  • Control of activated sludge retention time for foam and filamenteous protection
  • Dosage control and optimization of nitrogen and phosphorus
  • Monitoring of the biomass “health” with ATP measurement
  • Real-time monitoring of effluent regulated parameters
  • Wastewater plant data management for analysis and automatic reporting

Parameters Relevant to Water Supply Conditioning

  • cog icon flask iconAbsorbance UV
  • cog icon flask iconAmmonia
  • cog icon flask iconATP
  • cog icon flask iconBiochemical Oxygen Demand (BOD)
  • cog icon Flow
  • cog icon flask iconNitrate
  • cog icon flask iconORP
  • cog icon flask iconOxygen
  • cog icon flask iconpH value
  • cog icon flask iconPhosphorus
  • cog icon Sludge Level
  • cog icon flask iconTemperature
  • cog icon flask iconTotal Organic Carbon (TOC)
  • cog icon flask iconTurbidity and Total Suspended Solids (TSS)

How to Measure:

  • BioTector B7000i TOC Analyzer
  • BioTector B7000e TOC Analyzer
  • AMTAX sc Ammonium Analyzer
  • PHOSPHAX sc Phosphate Analyzer
  • Differential pH Digital Sensors
  • UVAS plus sc UV Probe Sensor
  • LDO sc Luminescent Dissolved Oxygen Sensor
  • TSSsc Turbidity and Suspended Solids Sensors
  • Solitax sc Turbidity and Suspended Solids Probes
  • Filtrax Sample filtration system
  • HQ440D Laboratory pH Meter Package
  • Grab Samplers
  • Portable Samplers
  • RTC-SD Sludge Dewatering Software
  • RTC-SRT Aeration Process Software
  • RTC-DAF Software
  • RTC-DOS Nutrient Dosing Software
  • WIMS Water Information Management Solution
  • NITRATAX Nitrate Sensors
  • LuminUltra ATP Test Kits
  • Sonatax Sludge Level Sensor
  • NX7500 UV Sensors
Pulp_Paper-Mill_Wastewater_Treatment_Tank_480x353.jpg
cog icon

Process solutions include online sensors that provide round-the-clock support for critical operational and process decision making.

flask icon

Laboratory solutions include simple, reliable and accurate tests that support quality and compliance decision making.


Engineering Design Tool

Engineering Consultants: Use our free, web-based tool to develop and download a water treatment plant design summary with specifications & drawings in a single file. Specify instruments and configuration faster, with less risk.

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Service & Support

Online Support

Hach Support Online (HSO) pools more than 70 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.

Technical Training

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.

Service

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.