%0 Journal Article
%T Ultrasonic Sludge Treatment and Its Application on Aerobic Digestion<br>污泥超声处理及其在好氧消化中的应用
%A LI Huan
%A JIN Yi-ying
%A NIE Yong-feng
%A LI Lei
%A YANG Hai-yin
%A <br>李欢
%A 金宜英
%A 聂永丰
%A 李雷
%A 杨海英
%J 环境科学
%D 2007
%I 
%X In order to enhance the degradation efficiency of waste activated sludge (WAS) in conventional aerobic digestion, various ultrasonic assisted treatment methods were investigated including ultrasonic disintegration of influent sludge, ultrasonic improvement of influent sludge activity and ultrasonic disintegration of return sludge. Firstly the effects of ultrasonic sludge treatment were studied to choose appropriate ultrasonic parameters, and then the experiments of aerobic digestion with different ultrasonic treatments were carried out. The results show that 1.0 W/mL, 10 minutes ultrasonic treatment can increase soluble chemical oxygen demand (SCOD) in the supernatant phase of sludge sample by 5.4 times and decrease total suspended solid (TSS) by 16%; 0.05 W/mL, 10 min ultrasonic treatment can increase the specific oxygen uptake rate (SOUR) of sludge sample by 29%. The two kinds of ultrasonic influent sludge pretreatment can't improve aerobic digestion effectively. Ultrasonic return sludge disintegration can enhance the volatile suspended solid (VSS) degradation ratio by 15%. Furthermore, the settlement performance of digested sludge is still good and the pollutant concentrations of supernatant phase increase slightly. So ultrasonic return sludge disintegration is considered as the most appropriate assisted treatment mode for aerobic digestion.
%K waste activated sludge
%K aerobic digestion
%K ultrasonic disintegration
%K microbial activity<br>剩余污泥
%K 好氧消化
%K 超声破解
%K 污泥活性
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=BC85E858628321E1441BFA87EE138466&yid=A732AF04DDA03BB3&vid=D3E34374A0D77D7F&iid=DF92D298D3FF1E6E&sid=0DC3089A5408D592&eid=388804B5826A17DB&journal_id=0250-3301&journal_name=环境科学&referenced_num=1&reference_num=25