The Management Application Research Of Simulation Technology In The Altered A~2/O Oxidation Ditch Sewage Treatment Plant Operation

Software simulation technology originated in foreign countries, the practical application ofthe foreign sewage treatment plant is more mature, have obvious advantages for guidingthe production, optimal operation, process design and test research. But the model of theparameters of the default value is against foreign water quality, for the adaptability of China’sdomestic specific water quality, and also the lack of related research. Therefore, foreign modelresearch results cannot be directly applied in domestic sewage treatment plant, still need to do agreat deal of experiments, especially parameters adjustment.Take sewage treatment plant in guangdong province for example, using the actual data andthe BioWin32software to create a model of modified A²/O oxidation ditch wastewater treatmentprocess. We use2010monthly average data to simulate，through the adjustment dynamicsparameters and chemometrics parameters，making the simulation results and the measured valuemore close. Simulation results show that the simulation effluent of COD_cr、BOD₅、SS、NH₃-N、TP and TKN are very good. Relative errors are less than10%, sample standard deviations areless than0.3, correlation coefficients are less than0.8or more.We verify the reliability model with the second sewage treatment plant data. Simulationresults show that the prediction effluent of COD_cr、BOD₅、 SS、NH₃-N、TP and TKN are verygood. Relative errors are less than10%, standard deviations are less than0.3, correlationcoefficients are less than0.8or more.Using BioWin32software, simulation results show that:1. By adjusting some parameters of the software, it adapt well for domestic water quality tothe south. And it can be applied to domestic altered A²/O oxidation ditch sewage treatment plantsimulation.2. It can guide the operation of altered A²/O oxidation ditch sewage treatment plant: theknown feed water quality, water can be predicted, make some adjustment.3. Research results can provide the reference for the southern city of the altered A²/Ooxidation ditch process operation management.