Abstract:

The strain used in the experiments has been isolated from actual coking wastewater treatment system.Based on physiological-biochemical determination，it is identified prilimarily as Serratia sp. The degradation capability of the strain is studied. The optimal degradations conditions are as follows：pH=8.0，temperature=30 ℃，and the amount of strain〔V（bacterial suspension）∶V（medium）〕=5%. At the same time，it is found that the degradation capacity of the strain decreases with the increase of the initial phenol concentration. The research on strain growing kinetics shows that phenol with high concentration has certain inhibition effect. Its kinetic equation is complies to Haldane equation. The kinetics equation of the strain under low concentration condition is complies to Monod equation.

Key words: coking wastewater, phenol, biodegradation, kinetics

摘要：

实验所用菌种分离自实际焦化废水处理系统，经过生理生化鉴定，初步确定为沙雷氏菌属。对该菌种进行了苯酚降解性能研究，确定了该菌种的最佳降解条件：pH 为8.0，温度为30 ℃，菌种量〔V（菌悬液）∶V（培养基）〕为5%，同时发现随着初始苯酚浓度的升高，菌种的降解性能下降；对该菌种的生长动力学研究表明，高浓度的苯酚对该菌种具有一定的抑制作用，其动力学方程符合Haldane 方程；低浓度条件下菌种的动力学方程符合Monod 方程。

关键词: 焦化废水, 苯酚, 生物降 动力学

CLC Number: 

• X703