摘要
为提高剩余污泥脱水性能,降低絮凝剂投加量,采用某城市污水厂剩余污泥为研究对象,研究微波预处理技术联合聚丙烯酰胺(PAM)对污泥脱水性能的影响,分析不同微波加载时间和PAM投加量对污泥毛细吸水时间(tcs)、污泥比阻以及离心后污泥含水率的影响及相关机理.结果表明,适宜的联用条件对污泥脱水效果优于仅PAM调理,污泥tcs、离心后含水率及污泥比阻分别由仅PAM调理的37.3 s、83.68%、1.72×109s2.g-1降至16.7 s、78.16%、0.35×109s2.g-1,且PAM投加量节省33%左右.适宜的微波与PAM联用对污泥的脱水性能有明显改善。
To improve the dewaterability of residual sludge and increase the dosage of flocculant,the residual sludge from one sewage treatment plant was studied by analyzing the impact of combination of microwave pretreatment technology and PAM on the sludge dewawtering.The results showed that proper coupling technique could improve the effect of sludge dewatering considerably compared to PAM.There was significantly decrease in the value of sludge＇s tcs,sludge＇s water content after centrifugation and sludge＇s specific resistance,from 37.3 s,83.68%,1.72×109 s2·g-1（only by PAM） to 16.7 s,78.16%,0.35×109 s2·g-1,and the dosage of PAM reduced by about 33%.Appropriate combination of microwave and PAM could improve the sludge dewatering significantly.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2012年第10期28-32,共5页
Journal of Harbin Institute of Technology
基金
国家高技术研究发展计划资助项目(2007AA06A411)
城市水资源与水环境国家重点实验室(哈尔滨工业大学)自主课题(2010DX05)
关键词
微波
聚丙烯酰胺
脱水性能
毛细吸水时间
胞外聚合物
microwave
polyacrylamide
dewaterability
capillary suction time
extracellular polymeric substances
作者简介
韩洪军（1955-），男，教授，博士生导师 通信作者：韩洪军，hhj@hit．edu．cn．
