【摘要】 为对聚磷菌有进一步的了解,以厌氧/好氧生化反应器中的聚磷菌为试验对象,研究了3种不同电子受体(O2、NO3-N、NO2-N)对聚磷菌吸磷效果的影响.结果表明:传统的厌氧/好氧生化反应器中存在有反硝化聚磷菌,且随着NO3-N质量浓度的不同,反硝化聚磷速率和总量也不同,而低水平的COD/TP将有利于反硝化聚磷菌的生长;此外,NO2-N也可参与聚磷菌缺氧吸磷反硝化的过程,但高质量浓度的NO2-N(本试验结果为≥95mg/L)将会对聚磷菌产生抑制作用.试验证实,以氧为电子受体的聚磷速率和聚磷总量明显高于NO3-N和NO2-N,但是,后二者的能耗、污泥产生量低于前者.更多还原

【Abstract】 Investigated the effects of three different types of electron acceptors on phosphate uptake in anaerobic-aerobic (An/O) process. The results indicated that there were denitrifying phosphorus removal bacteria (DPB) in An/O process. The rate of DPB to phosphorus removal organisms (PAOs) in An/O process varied in the nitrate concentration. The low rate of COD/TP would be favor to the growth of DPB. The data obtained suggested that in addition to the two well-accepted electron acceptors (oxygen or nitrate) for PAOs, the nitrite was an alternative electron acceptor while its concentration was below the threshold concentration((<95 mg/L).) Furthermore, the results confirmed that the speed and quantity of phosphate uptake in aerobic condition were higher than in anoxic (nitrate or nitrite) one, but the energy requirement and the sludge production were reverse absolutely.更多还原