Abstract：In order to accurately simulate, predict and evaluate the water environmental system of the Songhua River, O′Connor water quality model was used to establish BODDO response relation of the Songhua River. A huge mass of data were obtained by water mass tracing to realize model parameter identification, sensitivity analysis and model validation. The results show that by water mass tracing, the oxygen consumption coefficient, the reaeration coefficient and the total attenuation coefficient of the Songhua River are reasonable and can meet the requirements of water quality simulation. The temperature parameters of BODDO model of the Songhua River were corrected by the correction equations. The sensitivity analysis of model parameters show that the atmospheric reaeration coefficient of Ka and NBOD oxygen consumption coefficient of Kn are main influence factors on the prediction results with less influence of CBOD oxygen consumption coefficient of Kd, while NBOD total attenuation rate of Km and CBOD total attenuation rate of Kr have the slightest influence. The BODDO model and the corresponding parameters are improved by the measure results of Jiamusi section of the Songhua River to give research basis for further simulation of water environmental system.
2013, Vol. 34 
