Soft measuring method and device for effluent COD concentrations of rural domestic sewage A2O treatment terminal

The invention discloses a soft measuring method and a soft measuring device for effluent COD concentrations of a rural domestic sewage A2O treatment terminal. The soft measuring method regards effluent ph, incoming water conductance, effluent conductance, effluent turbidity, incoming water ammonia-nitrogen concentrations and effluent ammonia-nitrogen concentrations as input indicators for effluentCOD concentration prediction, and constructs an association model between the input indicators and the effluent COD concentrations by utilizing a BP neural network. Through simulating and verifying the BP neural network model, the test indicates that the neural network model established by the invention can predict the effluent COD concentrations in the same region quickly and precisely, and themodel has reliable prediction value for the effluent COD concentrations of A20 facilities. 本发明公开了一种农村生活污水AO处理终端出水COD浓度软测量方法及装置。该方法以出水ph，进水电导，出水电导，出水浊度，进水氨氮浓度与出水氨氮浓度作为出水COD浓度预测的输入指标，利用BP神经网络构建上述输入指标与出水COD浓度之间的关联模型。通过对上述BP神经网络模型