A_2N反硝化脱氮除磷工艺厌氧释磷的影响因素

Factors Influencing Anaerobic Phosphorus Release in A_2N Denitrifying Phosphorus and Nitrogen Removal Process

利用富含反硝化聚磷菌的厌氧污泥进行静态释磷试验,探讨了A2N双污泥工艺中反硝化聚磷菌厌氧释磷的影响因素。试验结果表明:适当提高温度有助于厌氧释磷;增加污泥浓度(MLSS)和碳源浓度,可以有效强化厌氧释磷效果;碳源类型与厌氧释磷密切相关,投加醋酸钠的效果最佳。

Static phosphorus release experiments were conducted using anaerobic sludge with rich denitrifying phosphorus removal bacteria （DPB）. The factors influencing anaerobic phosphorus release by DPB in A2N two-sludge system were investigated. The experimental results show that properly increasing the temperature is helpful to anaerobic phosphorus release. Higher concentrations of sludge and carbon source can improve the effect of anaerobic phosphorus release. Anaerobic phosphorus release is closely influenced by the carbon source type. The best carbon source is sodium acetate.