Economy Neutralization System (ENSP)

The Economy Neutralization System (ENSP) is a single stage pH neutralization system designed primarily for final pH adjustment as a stand alone unit.

The Economy Neutralization System (ENSP) has the capability of regulating effluent pH levels from a variety of industrial waste streams. The typical influent wastewater pH range for treatment is from 4 to 11. Effluent from the ENSP generally has a pH range between 6 and 9 standard units.

This basic neutralization system configuration includes HDPE constructed tank and is equipped with a mixer, two chemical metering pumps, one pH probe, one out of specification alarm and a pH controller. Modules are configurable to meet the standard continuous flow-through mode or optional manual and semi-automatic batch modes. Additional options include: chart recorder, gasket material and an effluent diversion valve (only available on the flow-through systems).

The frame supports the mixer, probe and chemical pumps. A rolling steel warehouse ladder is supplied for models where operator access to the system is needed.

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Process Description

Flow Through Systems

This system is designed to adjust the effluent pH to meet the required conditions for discharge. The flow-through neutralization system is sized to receive and treat non-metal bearing waste streams. The neutralization tank is sized for approximately 10 to 12 minutes retention time at a continuous flow rate. A mechanical mixer is mounted on a support bridge to ensure a proper homogeneous mixture.

Acid and caustic chemical metering pumps are provided to inject the neutralization reagents. The chemical metering pumps are automatically operated by the controller. Acid and/or caustic is added as needed to maintain the pH level within the designated parameters.

The controller is equipped to display pH, adjust chemical additions and alarm during out-of-specification conditions.

Optional Manual Batch Mode

The option manual batch mode neutralization system fills the neutralization tank manually, no level control is supplied to stop the filling of the tank. Once the pH adjustment is completed, the operator manually opens the pump suction valve and turns the air valve to start the air operated diaphragm pump.

Optional Semi-Automatic Batch Mode

The optional semi-automatic mode system fills the neutralization tank manually, no level control is supplied to stop the filling of the tank. Once the pH adjustment is completed, the operator manually opens the pump suction valve. the operator pushes a button on the panel to start the pump. Once the water level reaches low level, the pump will stop. The low level flowrate is set to leave some water in the tank.

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