超声促进污泥厌氧消化效能及其机理  

Improving sludge anaerobic digestion performance by ultrasound and its mechanism

作　　者：徐贵华[1] 陈少华[1] 石建稳[1] 

机构地区：[1]中国科学院城市环境研究所城市环境与健康重点实验室,福建厦门361021

出　　处：《化工进展》2010年第11期2198-2202,共5页Chemical Industry and Engineering Progress

基　　金：中国科学院知识创新工程青年人才领域前沿项目

摘　　要：污泥厌氧消化时间长,是一个缓慢的过程,其中水解是其主要限速步骤。针对这一问题,利用超声破碎污泥絮体和细胞壁加速污泥水解过程,从而达到促进厌氧消化的目的。研究结果表明:超声处理可显著提高污泥厌氧消化性能,起主导作用的是空化泡破碎产生的水力剪切力。Anaerobic digestion is a very slow process with a long retention time,since the hydrolysis is the main rate-limiting step.In order to solve this problem,ultrasound was utilized to promote the anaerobic digestion process by disrupting sludge flocs and microbial cell walls.Results showed that ultrasound treatment could obviously improve the anaerobic biodegradability of sludge,and the hydromechanical shear force produced by ultrasonic cavitations was responsible for sludge disintegration.

关 键 词：超声 厌氧消化 污泥 

分 类 号：X705[环境科学与工程—环境工程]