强化生物除磷体系中的反硝化除磷

 采用SBR反应器,研究了以硝酸盐作为电子受体的反硝化除磷过程.结果表明,反硝化聚磷菌存在于传统的强化生物除磷体系中.厌氧段磷的释放和COD的消耗成线性关系.通过厌氧/好氧交替运行方式,反硝化聚磷菌在聚磷菌中的比例从13.3%上升到69.4%.稳定运行的厌氧/缺氧SBR反应器具有良好的强化生物除磷和反硝化脱氮性能,缺氧结束时体系中磷浓度小于1mg/L,除磷效率大于89%.

Denitrifying dephosphatation in enhanced biological phosphorus removal system

Denitrifying dephosphatation process with nitrate as electron acceptor was studied, adopting sequencing batch reactor (SBR). The results showed that denitrifying phosphate accumulating bacteria existed in the conventional enhanced biological phosphorus removal system. There was a linear relationship between the COD taken up and the phosphate released in the anaerobic. The proportion of denitrifying phosphate accumulating bacteria to phosphorus accumulating organism increased from 13.3% to 69.4% with anaerobic/anoxic strategy. Anaerobic/anoxic SBR operated in steady-statepossessed good properties of enhanced biological phosphorus removal and denitrifying. The concentration of phosphorus in the system at anoxic end was lower than 1mg/L and the efficiency of phosphorus removal was above 89%.