摘要
胞外聚合物(Extracellular Polymeric Substances,EPS)即附着于污泥细胞表面的不溶性有机聚合物,主要来源于微生物新陈代谢和细胞自溶。EPS化学组成十分复杂,其主要成分为多糖和蛋白质(占70%-80%)。由于EPS极大地影响着污泥絮体的凝聚性质,因此它在控制和改善污泥处理过程中起着举足轻重的作用。
Extracellular polymeric substances(EPS),some kinds of insoluble organics,are usually attached to sludge cell walls,and derived from bacteria metabolism and cell lysis.The EPS components are very complicated,with 70%～80% being attributed to polysaccharides and proteins.Specific extraction methods should be needed for the extraction of EPS from sludge due to the compact binding force between EPS and cell walls.Owing to its dominant effects on the coagulation properties of sludge flocs,EPS could be some critical factor in sludge handling processes.
出处
《城市环境与城市生态》
CAS
CSCD
2005年第5期38-41,共4页
Urban Environment & Urban Ecology
