P-SBR工艺侧流释磷效果恶化探究

Study on Deterioration of Side Stream Phosphorus Release Effect of P-SBR Process

将侧流释磷技术应用到低碳源污水生物处理中,能有效缓解或者消除生物除磷与脱氮之间的竞争与矛盾,维持系统的稳定。但在本系统研究中发现当外碳源(HAc)质量浓度超过350mg/L时(以COD计),出现强化释磷恶化甚至系统崩溃的现象。对各种可能因素进行分析,得出在释磷一运行周期内加入过量碳源,聚磷菌体内的糖原耗尽,释磷停止;长期加入过量碳源,聚磷菌淘汰,系统崩溃。

In low carbon source biological treatment of wastewater,the application of side stream phosphorus removal technology can effectively alleviate or eliminate the competition and collision between biological phosphorus and nitrogen removal,and maintain the stability of the system.However,in this research,it is found that,enhanced phosphorus release appears to deteriorate and even the system crashes,when external carbon source(HAc) concentration exceeds 350mg/L(COD).Based on analysis of all possible factors,this paper concludes that glycogen in PAOs is depleted and phosphorus release stops,when adding excessive carbon source during an operating cycle,and that PAOs are eliminated while the system crashes when adding excessive carbon source for a long period of time.