Quick answer: PRAB industrial wastewater treatment systems combine ultrafiltration, reverse osmosis, vacuum evaporation, and automated pH adjustment in turnkey configurations to meet EPA and POTW discharge requirements while enabling water reuse. Documented results include up to 90% reductions in wastewater volume and disposal costs, with ROI typically achieved in 12–18 months. For facilities targeting Zero Liquid Discharge, PRAB’s EVALED® vacuum evaporators recover up to 99% of wastewater as reusable distillate.
PRAB‘s Industrial Water Management Systems deliver two outcomes for manufacturing facilities: regulatory compliance for discharges and measurable cost reductions through water reuse. PRAB designs fully integrated industrial wastewater treatment systems using ultrafiltration, reverse osmosis, vacuum evaporation, and automated pH adjustment in turnkey configurations, each factory-tested and backed by the Performantee® Guarantee.
Documented results across PRAB customer installations include up to 90% wastewater volume reduction, up to 75% detergent cost reduction, and up to 90% disposal cost reduction, with return on investment achieved on most installations within 12 to 18 months.
| Up to 91% | 12-18 Months | Up to 90% |
| Disposal Cost Reduction | Typical Service Life | Wastewater Volume Reduction |
PRAB‘s Industrial Water Management Framework is a site-specific design approach that begins with an analysis of your wastewater composition, flow rate, and discharge or reuse goals. Based on that analysis, PRAB specifies and integrates the treatment technologies required to meet your compliance targets while maximizing the economic return from water reuse.
Our full technology stack spans five treatment categories:
Systems are available as standalone units or as fully integrated turnkey packages that combine multiple technologies in a single skid-mounted configuration and are factory-tested before delivery.
Solutions include:
PRAB systems are engineered specifically for industrial manufacturing environments where uptime, reliability, and integration matter.
Through our Demo Before You Buy™ and Materials Testing and Fluid Testing programs, we validate your application and define measurable performance specifications before you purchase.
| FREE Materials Testing | FREE Fluid Testing | On-site Demo Equipment | Performantee™ |
|---|---|---|---|
| ■ Eliminate uncertainty by providing real, tested performance data.
■ Select correctly sized components and configurations ■ Quantify expected ROI and payback timelines ■ Support accurate conveyor, hopper, and system design |
■ Prove that your fluids can be recycled, reused, or treated to meet environmental compliance
■ Solids removal performance ■ Filtration clarity and turbidity reduction ■ Expected throughput and operating parameters – and more |
■ Engineered Confidence, Documented Results.
■ Your materials ■ Your infrastructure ■ Your team ■ De-Risking with on-site and our Kalamazoo, MI Facility |
PRAB’s Performantee is a true performance guarantee. We ensure that our equipment will achieve the specific results for which it was designed and manufactured. If it does not, we will revise, repair, or make any necessary changes to deliver the results you specified. So when you have questions or concerns about the performance of your PRAB equipment. 24/7 Live support. |
Proven Industrial Experience
PRAB‘s water treatment systems are designed to integrate with the broader manufacturing operation. Process Water Treatment Solutions address in-process fluid reuse for metalworking, plating, and food processing. Industrial Wastewater Treatment Systems ensure compliance with discharge limits for operations governed by the EPA, POTWs, or state-specific permits. For facilities targeting ZLD, EVALED® Vacuum Evaporation eliminates all liquid discharge by recovering spent fluids as high-purity reusable distillate. All systems are backed by PRAB’s Performantee® Guarantee, with documented performance data prior to shipment.
Unlike generic water treatment providers, PRAB understands metalworking fluids, tramp oils, fines, sludge generation, and the operational realities of industrial production environments.
PRAB uniquely combines:
This allows manufacturers to create more efficient closed-loop manufacturing operations that recover value from both metal scrap and industrial fluids.
Most facilities already operate legacy equipment from multiple vendors. PRAB specializes in integrating new systems into existing manufacturing environments with minimal disruption to production.
PRAB systems are designed to reduce operating costs while improving consistency, compliance, and long-term reliability. Many systems continue operating successfully for decades in demanding industrial applications.
PRAB helps manufacturers transform industrial wastewater from a costly disposal problem into a reusable operational resource.
Benefits may include:
Whether your facility needs a standalone pH adjustment system, coolant recycling equipment, or a fully integrated wastewater treatment solution, PRAB provides the engineering expertise, equipment durability, and long-term support manufacturers need to succeed.
Connect with a PRAB Water Treatment Specialist
Discover how PRAB can help reduce costs, improve environmental performance, and support long-term manufacturing efficiency.
Customers are reusing 81%, or more, of their wastewater.
Eliminate the need for hazardous chemicals and air contaminants.
Meet zero liquid discharge goals and comply with state and local regulations.
Proven to reduce manufacturing disposal costs up to 15x.
Protect your equipment and final product from contamination:
Reduce water costs and increase process performance by reusing water:
Meet environmental and discharge requirements, while maximizing profitability:
Separates suspended solids, emulsified oils and fine particulates; extends wash-water life, cuts chemical use and enables reuse. Learn More >
Ideal for industrial, metalworking and surface-treatment applications as a final stage after UF or chemical polishing. Learn More >
Concentrate high-strength wastewater, recover usable distillate and achieve ZLD for industries like plating, aerospace and battery recycling. Learn More >
Automated monitoring and dosing ensure effluent neutrality and compliance; designed for metal-finishing, manufacturing, recycling and chemical plants. Learn More >
Chemical-free microbial and organic reduction; suited for high-purity reuse applications and closed-loop systems. Learn More >
Remove free and emulsified oils early in process-water treatment to protect downstream equipment and optimize the treatment chain. Learn More >
Water Management solutions for Industrial wastewater treatment and process water treatment use a combination of physical, chemical, and biological processes to remove contaminants, meet environmental regulations, and enable reuse.
Key technologies include ultrafiltration (UF) for suspended solids and oils, reverse osmosis (RO) for dissolved salts, vacuum evaporation for Zero Liquid Discharge (ZLD), pH adjustment systems for regulatory compliance, oil-water separators, UV disinfection, and ozone oxidation for targeted contaminant removal.
PRAB designs fully integrated systems combining UF, RO, vacuum evaporators, automated pH control, and advanced oxidation in turnkey configurations tested under stringent factory conditions. These systems have achieved up to 90% wastewater volume reduction and significantly lowered chemical consumption in high-demand industries.
Ultrafiltration systems use semi-permeable membranes to separate suspended solids, emulsified oils, and fine particulates.
This process extends the life of wash water, reduces chemical use, and creates a consistent effluent stream that can be safely reused in manufacturing processes or discharged in compliance with environmental regulations.
PRAB Highlight:
PRAB’s crossflow UF systems are engineered for minimal fouling and maintenance, achieving up to 75% detergent savings and 90% haul-away cost reductions. They integrate easily with PRAB RO or evaporation systems for maximum reuse potential.
Learn About PRAB UF Systems
ZLD (Zero Liquid Discharge) systems recover nearly all water from industrial wastewater, producing reusable distillate and a concentrated residue. This is accomplished through vacuum evaporation, crystallization, advanced filtration, and sometimes membrane pre-treatment to maximize recovery and reduce environmental impact.
PRAB Highlight:
PRAB’s Evaled® vacuum evaporators help meet ZLD goals by efficiently concentrating wastewater and producing high-purity distillate. These units are ideal for industries with high-strength waste streams, including plating, aerospace, and battery recycling.
Custom system design begins with an analysis of industrial wastewater composition, flow rate, and site goals. Aerospace may need heavy-metal removal, plating may require cyanide destruction, and battery recycling may need acid and fluoride treatment.
PRAB’s engineers combine UF, RO, evaporation, pH control, and chemical treatment for industry-specific solutions, often delivered in modular, skid-mounted configurations for quick installation.
Industry Examples & Flow Diagrams of Industrial Wastewater Treatment Systems
Industrial wastewater treatment systems reduce water purchases, chemical costs, and waste disposal fees; help meet regulations; and improve sustainability. Over time, cost savings can offset capital investment.
PRAB customers have seen hundreds of thousands in annual savings through reduced disposal, chemical, and energy costs. Systems are designed for long-term ROI with modular expansion options.
Automated pH adjustment systems continuously monitor and regulate pH levels in wastewater to meet local discharge requirements. By reducing manual intervention, they ensure consistent compliance, optimize chemical usage, and improve the efficiency of treatment processes across a wide range of industries.
PRAB designs and integrates automated pH neutralization systems as part of complete wastewater treatment packages for industries such as metal finishing, aerospace, battery recycling, and pharmaceuticals. These systems range from acid neutralization for plating operations to advanced real-time pH control for manufacturing lines, providing consistent, reliable results.
Ozone and UV (Ultraviolet) systems destroy bacteria, viruses, and organic contaminants without adding residual chemicals, making them ideal for reuse and high-purity applications.
PRAB integrates ozone and UV into closed-loop systems for parts washing, plating, and other high-purity industrial processes.
PRAB Advanced Ozone and UV Disinfection Options
Oil-water separators remove free and some emulsified oils from process water, protecting downstream filtration equipment and improving discharge quality.
PRAB offers oil-water separation as part of integrated treatment packages, improving UF membrane life and system efficiency.
PRAB Oil-Water Separation Solutions
Membrane filtration (UF, nanofiltration, RO) produces high-quality water for reuse or discharge, reduces chemical use, and meets stringent environmental regulatory standards.
PRAB’s membrane systems are designed for industrial durability, integrating with evaporation or chemical treatment for complete solutions.
Resources:
Effective sludge management reduces disposal costs, minimizes downtime, and improves the efficiency of the entire industrial wastewater treatment process.
PRAB systems can include sludge dewatering modules to reduce weight and volume before disposal, further lowering operating costs.
Industrial wastewater treatment systems support regulatory compliance by removing contaminants, adjusting pH, reducing oil and grease, and lowering dissolved and suspended solids to meet federal, state, and local discharge standards.
These systems are designed to align with regulations such as the U.S. EPA’s Clean Water Act, Resource Conservation and Recovery Act (RCRA), state-level discharge permits, and local Publicly Owned Treatment Works (POTW) limits. By integrating technologies like ultrafiltration, reverse osmosis, oil-water separation, and automated pH adjustment, facilities ensure effluent quality remains within mandated thresholds—helping avoid fines, protect community infrastructure, and pass environmental audits.
PRAB’s industrial wastewater treatment solutions are engineered specifically to help manufacturers meet or exceed environmental regulatory compliance requirements:
By combining engineered equipment, pilot testing, and automated controls, PRAB systems give manufacturers confidence in regulatory compliance while also reducing costs through water reuse and zero-liquid-discharge strategies.
A structured maintenance program—covering filtration, pumps, instrumentation, chemical handling, tanks, safety systems, and compliance— ensures reliability and helps extend equipment life and maintain regulatory compliance.
PRAB provides detailed predictive maintenance, service documentation, operator training, and 24/7 technical support, ensuring our systems operate at peak efficiency for decades.
Here’s a summary of our predictive maintenance considerations:
EPA pretreatment regulations require industrial wastewater discharged to a Publicly Owned Treatment Works (POTW) to maintain a pH between 6.0 and 9.0. Discharges below pH 5.0 are specifically prohibited under 40 CFR §403.5(b)(2). PRAB systems verify every batch within this range before discharge is permitted.
Yes. PRAB pH adjustment systems are configurable for closed-loop water management, routing treated water directly back to the manufacturing process rather than to drain. This reduces freshwater consumption, cuts fluid disposal costs, and supports sustainability goals. End-of-life coolants, wash water, and process fluids can all be treated for recirculation.
PRAB’s automatic 50-micron continuous-band filter is the second stage of the two-stage pre-filtration system. It continuously removes fine particulates that could foul pH probes, damage metering pumps, or interfere with chemical dosing accuracy — extending equipment life and reducing maintenance frequency compared to conventional drum filters.
Yes. In metal-bearing wastewater streams, raising the pH to the appropriate level causes dissolved metals to precipitate as metal hydroxides for downstream removal. PRAB systems support metal hydroxide precipitation as part of the standard batch neutralization cycle, helping facilities meet both pH and metals discharge limits simultaneously.
Every PRAB pH adjustment system automatically logs pH readings, total volume discharged, and a time/date stamp for each batch event. Automated pH compliance reports are delivered by email at defined intervals. This creates an auditable discharge record without manual data collection, reducing regulatory exposure for EHS and finance teams.
The PRAB Performantee® is PRAB’s performance guarantee — a commitment that every system is matched to your specific discharge and reuse requirements, factory-tested before shipment, field-commissioned by PRAB technical staff, and backed by 24/7 phone support. It reflects PRAB’s position as a long-term operational partner, not just an equipment supplier.
Publicly Owned Treatment Works (POTW) discharge regulations under 40 CFR §403.5(b)(2) require a pH of 6.0–9.0; discharges below pH 5.0 are categorically prohibited as corrosive hazardous waste.
PRAB’s automated pH Adjustment Systems verify every batch against this range before releasing effluent, with automated pass/fail logging for every discharge event.
Learn how PRAB eliminates POTW violations at:
A batch pH adjustment system fills a reaction tank to a set volume, then precisely doses acid or caustic reagent based on continuous live pH sensor feedback until the target range is reached and confirmed stable.
Only after the batch passes the programmed setpoint does the system release effluent — eliminating any risk of an out-of-range discharge event.
See how PRAB’s automated batch process works at: https://www.prab.com/ph-adjustment-systems/
Batch pH adjustment systems complete the full neutralization reaction before every discharge, delivering more consistent effluent quality and lower chemical consumption than continuous-flow alternatives, which dose on-the-fly and risk under- or over-treatment at variable flow rates.
Continuous-flow systems are best suited for high, constant wastewater volumes above 10 GPM where a brief residence time is sufficient for the waste chemistry.
PRAB offers both configurations — compare options at https://www.prab.com/ph-adjustment-systems/
Yes — PRAB pH Adjustment Systems support closed-loop water management by verifying treated process water to a target pH before routing it directly back into the manufacturing process, rather than to drain or haul away, eliminating disposal costs and reducing freshwater demand.
Facilities operating under drought restrictions or zero-liquid-discharge (ZLD) requirements benefit most, as on-site treatment and reuse removes dependence on municipal water supply.
Explore PRAB’s industrial water reuse solutions at https://www.prab.com/industrial-wastewater-treatment/
Automated pH control eliminates the overfeeding inherent in manual neutralization by dosing acid or caustic reagent only in response to live sensor readings — stopping precisely when the target pH is reached rather than adding a fixed volume per batch.
PRAB’s closed-loop dosing algorithm significantly reduces chemical consumption compared to both manual and continuous-flow systems, thereby lowering reagent costs and hazardous waste disposal fees.
Calculate your projected chemical savings or explore system options at https://www.prab.com/ph-adjustment-systems/
Industries that commonly require pH adjustment systems include metalworking, CNC machining, metal fabrication, die casting, electroplating, chemical processing, aerospace manufacturing, and food and beverage — any facility generating acidic or caustic process wastewater subject to POTW discharge limits.
PRAB pH Adjustment Systems are engineered for industrial wastewater flows from 8,000 to 39,000 gallons per day, with configurations for both batch and continuous-flow applications.
See industry-specific solutions at https://www.prab.com/ph-adjustment-systems/
PRAB’s 50-micron continuous-band filter removes fine particulate solids from incoming wastewater before it contacts pH probes or precision metering pumps — preventing probe fouling, sensor drift, and pump wear that are the most common causes of pH system downtime.
The continuous-band design self-cleans automatically, eliminating the manual media replacement required by conventional drum filters and reducing overall maintenance labor.
Learn more about PRAB’s pH system design at https://www.prab.com/ph-adjustment-systems/
Yes — raising wastewater pH to the appropriate level (typically 8.5–10.5 depending on the metal) causes dissolved heavy metals such as zinc, copper, nickel, and chromium to precipitate as insoluble metal hydroxides that can be removed by downstream filtration or settling.
PRAB pH Adjustment Systems support metal hydroxide precipitation as part of the standard batch neutralization cycle, helping facilities meet both POTW discharge limits and RCRA hazardous waste de-listing requirements.
Explore PRAB’s industrial wastewater treatment capabilities at https://www.prab.com/industrial-wastewater-treatment/
PRAB pH Adjustment Systems automatically log pH reading, effluent volume, and timestamp for every batch discharge event, creating a complete, tamper-evident compliance record that satisfies POTW permit documentation requirements and RCRA audit trails without any manual data entry.
Automated compliance reports are generated and emailed on a configurable schedule, giving EHS managers a ready-to-present audit package at any time.
Learn how PRAB’s automated compliance documentation works at https://www.prab.com/ph-adjustment-systems/
Closed-loop water management in manufacturing is a water treatment strategy in which process fluids are treated on-site and recirculated back into the manufacturing process rather than discharged to a sewer or hauled off-site for disposal — reducing freshwater consumption, eliminating discharge fees, and minimizing hazardous waste generation.
PRAB pH Adjustment Systems enable closed-loop water management by neutralizing process wastewater to a target pH range, verifying quality in every batch, and routing compliant effluent directly back to the process.
Explore PRAB’s closed-loop and industrial water reuse solutions at https://www.prab.com/industrial-wastewater-treatment/
POTW discharge violations most commonly result from effluent pH outside the required 6.0–9.0 range, missing or incomplete discharge logs, undocumented batch events, and probe drift from inadequate sensor maintenance — any of which can trigger EPA enforcement action under 40 CFR §403.
PRAB pH Adjustment Systems prevent violations by automatically verifying every batch before release, logging pH, volume, and timestamp for every discharge event, and generating scheduled compliance reports that eliminate gaps in the audit trail.
Learn how PRAB protects your facility from POTW violations at https://www.prab.com/ph-adjustment-systems/
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