文献类型：期刊文献

中文题名：超声波参数对剩余污泥中SCFAs和EHCs释放的影响

英文题名：RESEARCH ON INFLUENCING FACTORS OF SONICATION ON SCFAs AND ECHs RELEASE FROM WASTE ACTIVATED SLUDGE

作者：蔡佳骏[1];王晓霞[1];孙贤波[1];赵婧婧[1]

机构：[1]华东理工大学资源与环境工程学院,上海200237

年份：2016

卷号：34

期号：1

起止页码：86

中文期刊名：环境工程

外文期刊名：Environmental Engineering

收录：CSTPCD;;北大核心:【北大核心2014】；CSCD:【CSCD_E2015_2016】；

基金：国家自然科学基金(51108181)

语种：中文

中文关键词：剩余污泥;超声时间;声能密度;SCFAs;EHCs

外文关键词：WAS; ultrasonic duration; ultrasonic intensity; SCFAs; EHCs

摘要：考察了不同超声处理参数下剩余污泥中短链脂肪酸SCFAs和易水解组分EHCs的释放特性。结果表明:超声波作用下SCFAs的最大释放量为197.0 mg/L,超声时间对SCFAs释放影响显著;在超声时间为100 min内,声能密度小于0.6 W/mL时,EHCs释放随超声时间和声能密度的增加而提高;在相同能耗下,长超声时间、低声能密度的超声处理条件更有利于获得较高的EHCs,超声时间对EHCs释放的贡献度高于声能密度;释放的EHCs以糖类为主,经短时间水解酸化可生成较高浓度的SCFAs。
Ultrasonic technology was used to treat waste activated sludge（ WAS）,in order to investigate the influencing factors of sonication to the releasing of short-chain fatty acids（ SCFAs） and easy-hydrolysis components（ EHCs） from WAS.The result showed that SCFAs were released with the highest amount of 197. 0mg / L after the treatment of sonication,and ultrasonic time was the dominant factor; the amount of released EHCs increased with ultrasonic duration and intensity when the ultrasonic duration was shorter than 100 min,and the ultrasonic intensity was lower than 0. 6 W / mL; at the same ultrasonic energy level,a longer ultrasonic duration and lower ultrasonic intensity resulted in more effective EHCs release; carbohydrate was the most important component in released EHCs,which could be easily transformed into SCFAs in short time of hydrolysis and acidification.