环境事故对污水处理厂运行的影响及对策

以松花江水体污染造成的哈尔滨全市停水为背景，研究了水量锐减对哈尔滨太平污水厂运行造成的影响和实施应急措施后的效果。结果表明：进水量减少对污水厂产生了进水负荷冲击、营养缺乏和水温下降等不利影响；采取生物强化措施后有效抑制了污泥恶化，化解了水量减少期间和恢复供水后的负荷冲击，在进水COD、NH3-N和SS浓度分别为472、130．9和200mg／L的条件下，出水相应浓度分别为44、7和23．5mg／L，实现了进水量减少期间污水厂运行的平稳过渡。

Influence of Environmental Accident on the Operation of Sewage Treatment Plant and the Countermeasures

On the background of breaking down of Harbin water supply due to the pollution accident of the Songhua River, the paper documents the influence of the decreased influent flow on the operation of Taiping Municipal Sewage Treatment Plant and the efficiency of emergency measures. The results show that the decreased influent flow leads to the shock load, lack nutrition and low temperature of the sewage treatment plant. The application of bioaugmentation measures can prevent the sludge deteriorating and decrease the shock load efficiently. The COD, NH3 - N and SS concentrations in the effluent are 44 mg/L, 7 mg/L and 23.5 mg/L, respectively, if the corresponding parameters in the influent are 472 mg/L, 130.9 mg/L and 200 mg/L, respectively. The smooth transition of the sewage treatment plant in the period of influent decreasing is realized.