摘要
利用正丁醇为碳源,通过测定膜生物反应器(MBR)内混合液的溶解性有机碳(DOC)来表征溶解性微生物代谢产物(SMP)的浓度.利用死端过滤试验来测定SMP的产出对膜污染的影响.结果表明,微生物内源代谢产物(BAP)所含大分子有机物浓度大于微生物利用基质代谢产物(UAP),BAP分子量大于100k的有机大分子所占比例超过18%;BAP浓度是影响膜污染的关键因素.阻力分布试验表明,BAP是凝胶层阻力的主要来源,BAP产出量和过滤总阻力之间存在很好的相关性,二者之间的关系为R=1.76×1012TOC0.1914.
Using n-butanol as carbon source, the concentration of soluble microbial products （SMP） was assessed through determining the dissolved organic carbon （DOC） of mixed liquid in membrane bioreactor （MBR）. Dead-end filtration test was used to determine the influence of the generation of SMP on membrane fouling. The concentration of large molecule organic matter in biomass associated products （BAP） was greater than that of substrate utilization associated products （UAP）. Organic large molecule with molecule weight of more than 100 K in BAP was over 18%. BAP concentration was a key factor influencing membrane fouling. The resistance distribution test showed that the BAP was the main source of gelatinoids layer resistance. The BAP producing amount had very good correlativity with filtration total resistance, their relationship was R= 1.76 × 10^12 TOC^0.1914
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2007年第4期539-542,共4页
China Environmental Science
基金
天津市应用基础研究计划项目(07JCZDJC02100)
