Bridgewater State University pH Neutralization System

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Practical Applications, Inc., a leading environmental company, has designed and built a state of the art pH Neutralization System for Bridgewater State University's Marshall Conant Science Building in Bridgewater, MA.

The Practical Applications, Inc. (PAI) Model-1812 pH Neutralization System is designed to monitor and adjust the pH of wastewater prior to discharge to the city sewer system. This model will handle influent flows to a maximum of 33 gpm and consists of one baffled wastewater treatment tank, one mixer, two reagent pumps (one acid and one caustic), two reagent storage tanks with secondary containment, tank and effluent pH probes. The tank pH analyzer/controllers monitor and adjust pH in each tank between the pH set points established by the operator. The effluent probe monitors the discharge pH and uses this information to generate a permanent record on a digital chart recorder. If re-treatment is indicated, the system can activate a pH Out of Specification Alarm and divert the wastewater to a 500 gallon lift station tank containing two submersible centrifugal pumps.

A 4" magnetic flow meter installed at the pH system outlet monitors and displays real time and totalized discharge flow rate to the city sewer. A signal from this unit is also sent to the chart recorder for a permanent record.

The PAI Model-1812 pH Neutralization System is designed to function both continuously and automatically. Maintenance is limited to periodic inspections and calibrations, filling the acid and caustic reagent tanks and responding to system alarms.

PAI has been designing, building, and operating wastewater treatment systems since 1994. Our systems are designed and built by operating engineers and technicians who understand that an effective system must ensure optimal performance while remaining economical and easy to maintain.

We have worked with many industries to assist with their wastewater needs and we take ownership for their water systems, wastewater systems, sampling/self monitoring, and regulatory reporting so our customers can focus on their core business.


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Wiwa Deepreecha