摘要
分别以丙酸、丙酸/乙酸(浓度比值为0.5、2)、乙酸为碳源,在SBR中采用厌氧/缺氧方式驯化富集反硝化聚磷菌(DPB),研究了丙酸/乙酸比值对反硝化除磷系统中有机物的降解、PO43--P的释放与吸收、NO X--N浓度、PHB和糖原含量以及污泥中磷含量的影响。结果表明,随着丙酸/乙酸比值的提高,厌氧释磷量减少,厌氧末期的PHB含量降低,缺氧段聚磷菌的合成和代谢能力减弱,最终导致对PO43--P的去除率降低。因此,乙酸含量高的碳源更利于反硝化除磷的进行。
Using propionic acid, acetic acid and propionic/acetic acid with ratio of 0.5 and 2 as carbon sources, sequencing batch reactor was operated in anaerobic/anoxic mode to domesticate and enrich DPB. The influences of propionic/acetic acid ratios on COD degradation, PO4^3- - P release and uptake, NOx-- N concentration, poly-hydroxy-butyrate （PHB）, glycogen and phosphorus in the sludge during denitrifying phosphorus removal were investigated. The results show that with the increase of propionic/acetic acid ratio, the anaerobic phosphorus release, PHB, synthesis and metabolism of DPB are all decreased, resulting into the decrease in removal rate of PO4^3- - P. So the carbon source with high acetic acid is more favorable for denitrifying phosphorus removal.
出处
《中国给水排水》
CAS
CSCD
北大核心
2011年第1期79-81,共3页
China Water & Wastewater
基金
天津市重大科技攻关项目(043112011)
建设部重点科技项目(04227)
关键词
反硝化除磷
丙酸
乙酸
溶解性正磷酸盐
PHB
糖原
denitrifying phosphorus removal
propionic acid
acetic acid
dissolved PO4^3- -P
PHB
glycogen
