大连工业大学学报2013，Vol.32Issue(1)：47-50,4.
利用硫酸根自由基处理剩余污泥
Treatment of excess sludge with sulfate free radical
梁花梅 1孙德栋 1郑欢 1马春 1张新欣 1郝军 1薛芒1
作者信息
- 1. 大连工业大学轻工与化学工程学院,辽宁大连 116034
- 折叠
摘要
Abstract
The disintegration of excess sludge with sulfate free radical produced by heat-activated potassium persulfate was studied. The changes of the sludge's nature before and after the treatment were investigated. The results indicated that the sludge dissolution ratio displayed a linear decrease with the increase of reaction time. Elevated temperature can improve the efficiency of heat-activated potassium persulfate and the
sludge disintegration rate. In the following operation condition, reaction temperature of 90℃ , heating time of 90 min and the K2S2O8 dosage of 0. 5 g per gram SS, the sludge dissolution ratio was 16.9%. In this operation, more microbial extracellular polymeric substances (EPS) were decomposed,
and more intracellular material was released to the liquid phase. The concentration of SCOD was increased to 719 mg/L, which is 435 mg/L by single heating treatment; the concentration of TN, TP was increased by 46% and 60% respectively. Part of organic nitrogen was mineralized by oxidants to NH+4-N, whose concentration was increased from 15. 0 to 27. 8 mg/L.关键词
剩余污泥/硫酸根自由基/过硫酸钾/预处理Key words
excess sludge/ sulfate free radical/ potassium persulfate/ pretreatment分类
资源环境引用本文复制引用
梁花梅,孙德栋,郑欢,马春,张新欣,郝军,薛芒..利用硫酸根自由基处理剩余污泥[J].大连工业大学学报,2013,32(1):47-50,4.
