Patent ID: 9682872
Date: 2017-06-20
CPC Classifications: B01D,B03D,C02F

Claim:
1. A method for treating a wastewater stream to produce an effluent stream, the method comprising: providing a plurality of pumps that supply a plurality of chemical additives at variable flow rates to said wastewater stream at a plurality of points; providing a first total suspended solids sensor that is disposed within said wastewater stream downstream of said plurality of pumps and that continuously samples directly from the wastewater stream to monitor clarity of said wastewater stream; using a proportional-integral-derivative (PID) controller to monitor flow rate of said wastewater stream, and continually injecting, by the plurality of pumps based upon turbidity measurements made by the first total suspended solids sensor, said plurality of chemical additives into the wastewater stream in real time responsive to adjustments specified by the PID controller to keep the clarity of the effluent stream in a predetermined and set range.