| 摘要 |
The control method and apparatus of the present invention is directed for an activated sludge wastewater treatment process. Instrumentation for measuring suspended solids concentration in the aeration tank and in the WAS flow stream communicates with a data processor having at least one data structure. The data structure stores algorithms, constant values including the volume of the aeration tank (VAerationTank), and unit conversion factors. In use, the user inputs to the data processor a desired solids retention time (SRTDesired) to optimize the treatment process. The data processor receives data from the MLSS instrumentation and the WASSS instrumentation and calculates the optimum WAS flow rate according to the following formula:Optionally, the data processor commands valves or pumps to achieve the calculated WAS flow rate to thereby drive the waste treatment process toward a constant SRT.
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