以剩余污泥减量化为目标的废水生物处理技术研究进展

Mini Review on Wastewater Treatment Technology Aimed at Minimization of Excess Sludge

以剩余污泥减量化为目标 ,针对活性污泥法处理污水而产生大量污泥的现象综述了污水生物处理技术研究的三个主要方面 ,即对剩余污泥的后处理 (污泥产生后再处理 )、减少污水处理过程中污泥的产量和污泥原位降解。

Activated sludge process has been widely used in wastewater treatment in cities and industries. Currently, the production of excess sludge of large amount from activated sludge process was one of the most serious problems encountered in biological wastewater treatment. The excess sludge treatment is difficult and the cost for treating the excess sludge accounts for 20%～50% of the total running costs in China. The recent studies for wastewater treatment biotechnology with the emphasis on the reduction of excess sludge can be classified into three directions: post-treatment of excess sludge generated from activated sludge process with chemical or physical methods, reduction of sludge generation rate in wastewater treatment process and new treatment bioprocess capable of in situ degradation of excess sludge. The research progress in the three parts was reviewed in this paper.