摘要
用错流式膜－生物反应器（ＣｒｏｓｆｌｏｗＭｅｍｂｒａｎｅＢｉｏＲｅａｃｔｏｒ简称ＣＭＢＲ）进行处理生活污水试验并研究其生物动力学参数．结果表明：当ＨＲＴ为５ｈ，ＳＲＴ为１５ｄ，膜面流速为４ｍ／ｓ，膜通量为７５、１５０Ｌ／（ｍ２·ｈ）时，ＣＭＢＲ处理生活污水试验的去除率为：ＣＯＤ＞９７％、ＮＨ３－Ｎ＞９７％、浊度≥９８％；对ＳＳ和总Ｅ．ｃｏｌｉ则达到１００％，出水水质优于建设部生活杂用水回用标准ＣＪ２５．１－８９．生物相分析表明，污泥中没有原、后生动物，只有菌胶团．推导了ＣＭＢＲ稳态运行时的生物浓度计算公式，进而求得表观产率因数Ｙｇ为０．６５，衰减常数Ｋｄ为０．１ｄ－１．
It is proven that Crossflow Membrane BioReactor(CMBR)applied to domestic wastewater treatment,under conditions of hydraulic retention time 5h,sludge retention time 15d,membrane surface velocity 4m/s and membrane flux 75,150L/(m 2·h),is technically feasible and reliable during six weeks.Removal rate of COD,NH 3 N,and turbidity of the system are equal to or higher than 97%,97% and 98%,SS and E.coli.,100%.The effluent quality is always better than the quality standard for reuse issued by the Ministry of Construction in China.An important formula to calculate the sludge concentration for CMBR at steady state is successfully derived from material balance equations.The apparent yield factor Y g is approximately 0.65mgVSS/mg COD and the decay constant,0.1d -1 .Furthermore,the biofacies analysis of CMBR is included.
出处
《环境科学》
EI
CAS
CSSCI
CSCD
北大核心
1997年第6期23-26,共4页
Environmental Science
基金
国家自然科学基金
关键词
错流式
生物反应器
生活污水
污水处理
crossflow,membrane,bioreactor,biological behavior,domestic wastewater.
