嗜热微生物及其降解剩余污泥的机理  

Thermophiles and their working mechanisms in degrading excess sludge:A review

作　　者：杨悦[1] 王云龙[1] 杨尚源[1] 梁志伟[1] 刘国防[1] 陈英旭[1] 

机构地区：[1]浙江大学水环境研究院,杭州310058

出　　处：《应用生态学报》2012年第7期2026-2030,共5页Chinese Journal of Applied Ecology

基　　金：国家科技重大专项(2012ZX07101-012);杭州市统筹城乡区域发展科技支撑专项(20111233F07)资助

摘　　要：活性污泥法已经被广泛应用于污水处理中.剩余污泥是此过程的副产物,其处理费用约占污水处理系统总成本的25%～60%,处理不当则会带来严重的二次污染,成为目前污泥处理研究的难点之一.利用嗜热微生物降解污泥操作方便、经济性较好且易于管理,具有良好的应用前景.本文对污泥降解中的嗜热微生物、嗜热微生物污泥降解机理以及污泥降解过程中起重要作用的嗜热蛋白酶和脂肪酶的最新研究进展进行综述,归纳总结了影响嗜热微生物降解污泥的主要影响因素,并对嗜热微生物在污泥消化方面的应用研究进行展望.Activated sludge process is widely used in treating a wide variety of wastewater,but the by-product is the large amount of excess sludge.To treat the excess sludge properly could spend 25%-60% of the total cost of wastewater treatment,while improperly treating the sludge could cause serious secondary pollution.Therefore,the reduction of excess sludge is becoming a rising challenge.Using thermophiles to degrade excess sludge is a way easy in operation and inexpensive in maintenance,being a promising method in application.This paper reviewed the recent progress in the researches of sludge-degrading thermophiles,their working mechanisms,and the enzymes from thermophiles,such as thermophilic proteolytic enzymes and thermophilic lipases which play an important role in the degradation of sludge.The factors affecting the degradation of sludge by thermophiles were summarized,and the perspectives for the further research on the application of thermophiles in digesting sludge were discussed.

关 键 词：剩余污泥 嗜热微生物 污泥降解 胞外酶 

分 类 号：X703[环境科学与工程—环境工程]