PACT® Biological Treatment Systems

The PACT (powdered activated carbon treatment) system combines biological treatment and carbon adsorption into a single, synergistic treatment step, resulting in significant cost savings and performance advantages over other systems.

The PACT system can be used to treat industrial wastewater, landfill leachate and highly contaminated surface water or groundwater. The single-step treatment process results in significant cost and performance advantages over systems such as activated sludge and granular carbon.

There are many other benefits to using a PACT® system. The powdered activated carbon used in the systems improves the performance of biological systems by stabilizing them against upsets and shock loading. PACT® systems control color and odor, and can reduce costs for residuals disposal and remove soluble organics.With a PACT® system, you will use far less carbon than with a granular system to achieve equal or better treatment. And, you won’t have the problems of prefiltration or column plugging common to granular systems. Further, powdered carbon costs less than granular carbon.

PACT® systems are at work today at installations around the world, helping users comply with:

Regulations for organic chemicals, plastics and synthetic fiber (OCPSF) manufacturing discharges
RCRA “land ban” regulations, which forbid land disposal of wastewater, and require treatment of landfill leachates and contaminated groundwater
Stringent bio-assay standards for effluent discharges
Pre-treatment regulations controlling industrial discharges to POTWs
Stringent COD and nitrogen standards for direct effluent discharges

PACT® systems include retrofits as well as new construction. They range from factory-built units treating 600 to 100,000 gallons a day, to field-erected units treating up to one MGD, to custom-designed systems handling as much as 50 MGD. Both single-stage and two-stage PACT® systems are available in continuous or batch flow configurations.

PACT® system customers also benefit from more than 30 years of process knowledge, pilot plant testing capabilities and project design expertise of SiemensWater Technologies.

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Features and Benefits

Improved performance of aerobic and anaerobic biological systems by stabilizing them against upsets and shock loading
Color and odor control
Reduced costs for disposing of residuals
Eliminates problems with prefiltration or column plugging

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Michele Migliavacca

Product Manager

715.355.3505

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Request a Proposal

Product Documentation

Brochures

PACT Systems brochure
Landfill Leachate Treatment brochure
Customer Service brochure

Technical Reports

Use of the PACT® System to Treat Industrial Wastewaters for Direct Discharge or Reuse
The Challenges of Treating a Complex Pharmaceutical Wastewater

Parts & Services

Call 800.826.1838 or e-mail Bill Wunsch at william.wunsch@siemens.com

Highlights

PACT systems provide cost effective, onsite treatment of landfill leachate.
Wet Air Regeneration can be used to regenerate spent carbon from the PACT® system.
PACT systems can be operated as continuous flow or batch-operated systems.

Featured Case Studies

Synthetec, Inc., Uses PACT® System to Treat Complex Pharmaceutical Wastewater
PACT® System Successful on Landfill Leachate, Groundwater in Florida
PACT® System Helps El Paso, Texas, Reuse Effluent