Screening pretreatment methods for sludge disintegration to selectively reclaim carbon source from surplus activated sludge

被引:21
作者
Li, Yiyong [1 ,2 ]
Hu, Yongyou [1 ,2 ]
Wang, Guanghua [1 ]
Lan, Wangcheng [1 ]
Lin, Jiatian [1 ]
Bi, Qi [1 ]
Shen, Huishan [1 ]
Liang, Shukun [1 ]
机构
[1] S China Univ Technol, Coll Environm & Energy, Key Lab Pollut Control & Ecol Remediat Ind Agglom, Minist Educ, Guangzhou 510006, Guangdong, Peoples R China
[2] S China Univ Technol, Coll Light Ind & Food Sci, State Key Lab Pulp & Paper Engn, Guangzhou 510640, Guangdong, Peoples R China
关键词
Surplus activated sludge; Pretreatment; Carbon source; Variation; ENHANCED BIOHYDROGEN PRODUCTION; BIOLOGICAL NUTRIENT REMOVAL; SEQUENCING BATCH REACTOR; EXCESS SLUDGE; SEWAGE-SLUDGE; ANAEROBIC-DIGESTION; ALKALINE PRETREATMENT; WASTE-WATER; REDUCTION; HOMOGENIZATION;
D O I
10.1016/j.cej.2014.06.034
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Four pretreatment methods, including alkaline, chlorine dioxide, ultrasound, and homogenization, were screened for sludge disintegration to selectively release carbon from surplus activated sludge (SAS), while avoiding nutrient (phosphorus and nitrogen) release. The characteristics of these methods in terms of carbon, nitrogen, and phosphorus releases were compared, and the variation between the actual and theoretical values of those releases was evaluated. The results showed that the four pretreatment methods had different preferences in both carbon and nutrient release, indicating a possibility of selective release. Ultrasound had a preference in carbon release while not in nutrient release, and was a good method for selective release of carbon source. But homogenization was chosen for sludge disintegration to obtain carbon source from SAS with a cost consideration. And alkaline and chlorine dioxide pretreatment methods were not advocated for a low selective release of carbon source and a gas emission into environment. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:365 / 371
页数:7
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