石油化工废水微生物处理动力学参数的测定及应用

Determination and Application of Kinetic Coefficients of Petrochemical Wastewater Treatment by Macroorganism

以莫诺特（Ｍｏｎｏｄ）方程为基础，在无回流的小型连续活性污泥试验装置上，对某石油化工废水进行了试验。以ＣＯＤｃｒ和ＢＯＤ５表示底质浓度，用作图法和最小二乘法回归分析确定动力学参数ｋ、ｋｓ、ｙ和ｋｄ。结果表明，不同的底质浓度表示法和不同的确定参数方法都能准确地确定动力学参数。用所得的动力学参数去预测出水质浓度，其预测值和实测值的相对误差小于４％。

Based on Monod equation the values of the coefficients k, k s, y and k d of a petrochemical wastewater were determined by using the data derived from a continuous flow stirred tank reactor of bench-scale activated sludge without recycle. Different expression of substrate concentration (COD c, BOD 5) and different method (mean square regression, plotling) were used to calculate the coefficients. The results show that different methods of expression of substrate concentratiou and the calculation of the coefficients can be used to determine the coefficients more accurately. The effluent substrate concentration calculated by using the coefficients were compared with the concentration fested, and the relafive errors between them are less than 4%.