pH Adjustment Systems

pH Neutralization / pH Adjustment Systems for industrial wastewater treatment 

Mail 46 2006

Large OMEGA™ Systems for Waste Neutralization

Wastech designs large OMEGA™ acid waste neutralization systems from 100 to 500 gpm in addition to its smaller skid-mounted OMEGA™ systems, which are rated from 10 to 100 gpm.

The large OMEGA automated systems offer Zeus™ software (patent pending) for maximum performance. This software will monitor pH probe operation, chemical usage, and protects against discharge NOVs. In addition, the latest communication options and data logging to 21CFR Part 11 standards are provided.

Like their smaller counterparts, large OMEGA systems are skid mounted and pre-tested before installation. Very large systems may include a complete design package with installation instructions, which integrate customer supplied tanks and components with Wastech's software and control enclosure. Please see OMEGA neutralization system features.

Remember that neutralization requires the addition of a reagent (acid or caustic), adequate mixing, and retention time to allow the chemical reaction. Batch systems will incorporate actuated valves and level switches to control the process starting when the tank is full, and emptying when the pH is within the discharge range. More common are continuous systems where flow rates and reaction time will determine the size of the tank and the flow path.

Large continuous systems often utilize two or three stages, where the pH controller will inject chemicals in each stage. The first stage acts as a coarse adjustment, the second and third stages as polishing stages. With larger tanks, surge volumes of 25% to 30% of normal flow may require two levels within the tanks with overflows.

Neutralization is often the final step before discharging to the sewer. Neutralization can also be a process step to precipitate and settle out heavy metals such as iron, zinc, copper and chromium. Insoluble metal hydroxides are formed at a pH up to 10. Sludge is formed and separated before a final pH adjustment is made to within the discharge limits.

Neutralization demands an engineered solution. Wastech offers a complete package with quality components, automated controls, and custom software.

For Assistance with Large OMEGA™ Systems

Call us 818-998-3500 for a telephone presentation, engineering assistance, and a quotation. Using WebEX online teleconferencing, we can define the opportunity, show examples of the hardware and other installed installations, and customize an OMEGA acid waste neutralization solution.

  • Ben Naylor – Application Engineer (ext 227)
  • Harold Sipe – Senior Application Engineer (ext 224)