Control of Clarifier Flocculent for Construction Aggregate Processing Plants

Typical Process: Many construction aggregate producers use a clarifier unit to remove suspended solids from dirty wash water. Normally producers add a chemical flocculent (‘floc’) into the aid in the removal of suspended solids. Added into the center well of a clarifier, the floc is mixed with the incoming high-solid laden process water. When unadjusted for differences in suspended solids the plant may underdose resulting in poor yields or overdose contribution to chemical flocculate waste.

Galvanic Advantage: By installing Monitek CSK Probe into the center well of the clarifier to continuously monitor incoming solids and connecting a Monitek Messenger Transmitter to the floc control pump, a construction aggregate producer can automatically adjust flocculent dosing. The floc pump’s variable Hz speed control can be continuously adjusted when attached to the Messenger’s 4-20 mA output. Real-time floc control results in reduced floc consumption and process optimization.

Diagram: Control of Clarifier Flocculent for Construction Aggregate using Monitek System

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