影响反硝化除磷与厌氧氨氧化耦合的因素

氧对厌氧氨氧化菌有毒,但在颗粒污泥和生物膜中的厌氧氨氧化菌对氧有较高的耐受能力,并且聚磷菌能消耗影响氧氨氧化菌生长的氧。厌氧氨氧化菌的生长无需有机物的参与,聚磷菌释磷需要吸收有机物,少量有机物的加入对厌氧氨氧化菌的活性影响不大。亚硝酸盐是厌氧氨氧化菌氧化氨的电子受体,较高浓度的亚硝酸盐对反硝化聚磷有抑制作用,但合适浓度的亚硝酸盐(该浓度可以通过驯化来提高)可以作为反硝化聚磷菌吸磷的电子受体。厌氧氨氧化过程中有硝酸盐生成,反硝化聚磷菌能利用这部分硝酸盐。另外,两类菌都适宜于中温略偏碱性的环境。因此,通过创造同时对厌氧氨氧化菌和反硝化聚磷菌有利的微生态环境,发挥两者在脱氮除磷方面的协同耦合作用,达到高度脱氮除磷,是极有前景的废水厌氧(缺氧)处理研究方向。

Summing up the factors affecting the coupling of denitrifying phosphorus removal with anaerobic ammonium oxidation

Oxygen is toxic to anaerobic ammonium oxidation （ANAMMOX） bacteria, but ANAMMOX bacteria in grantdar sludge or bio-membranes appear to have relatively high endurance to oxygen. Moreover, phosphorusaccumulating organisms can consume oxygen for ANAMMOX bacteria. Although no organic carbon is needed in the ANAMMOX process, a little organic matter has no significant influence on the process. The ANAMMOX reaction uses nitrite as an electron acceptor. A high concentration of nitrite inhibits the denitrifying phosphorus removal process, but a suitable concentration of nitrite concentration can be enhanced can be used as an electron acceptor for denitrifying phosphorus removal. The suitable through the domestication process. Denitrifying phosphorus removal bacteria can use the nitrate produced in the ANAMMOX process. In addition, both bacteria prefer an environment of medium temperature and leaning alkalinity. Therefore, by creating a preferable micro-environment for denitrifying phosphorus removal bacteria and anaerobic ammonium oxidation bacteria, the coupling effect of two bacterium for removal of nitrogen and phosphorous can be very significant. This may be a very fruitful research topic in anaerobic wastewater treatment.