CAJ | 학술논문

采用人工配水,在厌氧/好氧交替运行的序批式活性污泥反应器(SBR)中,富集了全菌数量80%以上的聚磷菌(Candidatus Accumulibacter Phosphates).以此为基础,研究了O_2及不同浓度NO_3~--N、NO_2~--N对聚磷菌吸磷的影响.结果表明,在一定的条件下,聚磷菌可以NO_3~--N和NO_2~--N为电子受体进行缺氧吸磷;NO_3~--N浓度对聚磷菌的吸磷速率影响很小;聚磷菌可以低质量浓度NO_2~--N(≤40 mg/L)为电子受体,但不能以高质量浓度NO_2~--N(≥80 mg/L)为电子受体,而且高浓度NO_2~--N对聚磷菌吸磷产生抑制甚至对细菌本身存在毒害;NO_2~--N为电子受体时,其抑制浓度和污泥本身以及外界条件都存在很大的关系,各个研究结论不尽相同,其影响过程有待进一步的探讨.
채용인공배수,재염양/호양교체운행적서비식활성오니반응기(SBR)중,부집료전균수량80%이상적취린균(Candidatus Accumulibacter Phosphates).이차위기출,연구료O_2급불동농도NO_3~--N、NO_2~--N대취린균흡린적영향.결과표명,재일정적조건하,취린균가이NO_3~--N화NO_2~--N위전자수체진행결양흡린;NO_3~--N농도대취린균적흡린속솔영향흔소;취린균가이저질량농도NO_2~--N(≤40 mg/L)위전자수체,단불능이고질량농도NO_2~--N(≥80 mg/L)위전자수체,이차고농도NO_2~--N대취린균흡린산생억제심지대세균본신존재독해;NO_2~--N위전자수체시,기억제농도화오니본신이급외계조건도존재흔대적관계,각개연구결론불진상동,기영향과정유대진일보적탐토.
Candidatus Accumulibacter Phosphates as a well-known phosphate accumulating organisms(PAOs)was incubated in an anaerobic-aerobic SBR reactor using synthetical sewage. During the enriched culture, the sludge with bacterium which content 80 percent of PAOs was obtained, the effects of O_2,NO_3~--N, NO_2~--N on phosphate uptake by PAOs was investigated. The results showed that at the appropriate conditions, the phosphorus anoxic removal by PAOs could be realized with nitrate and nitrite as electron acceptor, initial nitrate concentrations had little effect on denitrification and phosphorus removal rate, while the initial concentrations of nitrite significantly affect the phosphorus removal. Nitrite with lower concentrations (≤40 mg/L) could be used as electron acceptor, but nitrite≥80 mg/L could not be selected as electron acceptor, and higher nitrite concentrations could also inhibit or even poison the bacteria. The inhibit concentrations of nitrite was correlated with external condition and sludge itself, the influence process and mechanism of inhibition need more research.