部分硝化-厌氧氨氧化反应器处理养猪场废水的模拟试验研究

THE RESEARCH ON THE SIMULATOR OF THE PARTIAL NITRIFICATION-ANAMMOX REACTOR FOR TREATMENT OF PIGGERY WASTEWATER

采用部分硝化一厌氧氨氧化工艺处理高污染负荷的养猪场废水，经过39d的静态培养以及141d的动态培养，成功启动厌氧氨氧化工艺，其COD去除率为平均76．30％、最高为90．42％；TN去除率平均为63．43％、最高达到71．03％；平均TN去除负荷为0．11keC（m^3·d）、最高为0．43keC（m^3·d）。试验结果表明，在高污染负荷条件下，部分硝化阶段，DO和prt对亚硝化作用有较大影响，当为亚硝化反应器出水DO的质量浓度在0．4-0．6mg／L、pH在7．2～7．5时效果最佳；厌氧氨氧化阶段，当进水中COD低于350mg／L、进氨氮的质量浓度低于376．2mg／L时，厌氧氨氧化反应才不会受到抑制。

The activated sludge from anaerobic tank in a sewage treatment plant was used as inocula in the USB reactor to apply to the nitrogen removal f rom piggery wastewater. After 39 d of static cultivation and 141 d of dynamic cultivation of wastewater, partial nitriftcation-anammox treatment system for piggery wastewater was start up successfully. A 76.30% COD removal rate, a 63.43% nitrogen removal rate and a 0.43 kg/（m^3·d） volumetric loading rate of total nitrogen were observed when the treatment system worked steadily. The results of this study demonstrated that the optimal DO range and the optimal pH range respectively are 0.4-0.6 mg/L, 7.2-7.5 at the period of partial-nitrification and the Anammox is retrained when COD and NH4^＋-N are above 350 mg/L and 376.2 mg/L, respectively.