造纸与化工混合污水处理生化动力学研究

采用造纸厂中段污水、化肥厂含氨氮污水、化工厂含酚污水、农药厂有机磷污水按不同比例混合，研究在微生物作用下生物降解过程，揭示其生化动力学规律。研究结果表明，混合污水生化动力学系数为衰减系数Ｋ_ｄ＝０．０３５ｄ~（－１），产率系数Ｙ＝０．８６４ｍｇ（ＶＳＳ）／ｍｇ（ＢＯＤ_５），底物最大比降解速率为ｑ_（ｍａｘ）＝０．２０１ｍｇ（ＢＯＤ_５）／ｍｇ（ＶＳＳ）ｄ，半速率系数为Ｋ_ｓ＝４８．９ｍｇ（ＢＯＤ_５）／Ｌ。实验结果所得的生化动力学系数，为区域性污水集中处理提供理论参考依据。

THE BIO-CHEMICAL KINETICS FOR THE MIXED WASTEWATER OF PAPER AND CHEMICA L PLANTS

The various rates of the mixed wastes of median waste of the paper mill,NH_3-nitrogen waste of the fertilizer work, phenol waste of the chemical plant and Organic phosphorus waste of the insecticide mill were treated with combined biochemical oxidization technology. The kinetic model for the biodegradation process was obtained. The result showed that the coefficient of attenuation (Kd)was 0. 035, yield-rate coefficient (Y)was 0. 864, the maximum degradation-rate variation of substance(q_(max))was 0. 201, median velocity coefficient(K_s)was 48. 9.The test provided the theoretical basis for central treatment of regional waste.