Comparison of sludge digestion under aerobic and anaerobic conditions with a focus on the degradation of proteins at mesophilic temperature

被引：80

作者：

Shao, Liming

Wang, Tianfeng ^{[1
]}

Li, Tianshui ^{[1
]}

Lu, Fan ^{[1
]}

He, Pinjing ^{[2
]}

机构：

[1] Tongji Univ, State Key Lab Pollut Control & Resource Reuse, Shanghai 200092, Peoples R China

[2] Tongji Univ, Inst Waste Treatment & Reclamat, Shanghai 200092, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2013年 / 140卷

关键词：

Waste activated sludge; Aerobic digestion; Anaerobic digestion; Protein; Humification; DISSOLVED ORGANIC-MATTER; WASTE-ACTIVATED-SLUDGE; SEWAGE-SLUDGE; HUMIC SUBSTANCES; HYDROLYSIS; EFFICIENCY; PERFORMANCE; REDUCTION; LANDFILL; ENZYMES;

D O I：

10.1016/j.biortech.2013.04.081

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Aerobic and anaerobic digestion are popular methods for the treatment of waste activated sludge. However, the differences in degradation of sludge during aerobic and anaerobic digestion remain unclear. In this study, the sludge degradation during aerobic and anaerobic digestion was investigated at mesophilic temperature, focused on protein based on the degradation efficiency and degree of humification. The duration of aerobic and anaerobic digestion was about 90 days. The final degradation efficiency of volatile solid was 66.1 +/- 1.6% and 66.4 +/- 2.4% under aerobic and anaerobic conditions, respectively. The final degradation efficiency of protein was 67.5 +/- 1.4% and 65.1 +/- 2.6% under aerobic and anaerobic conditions, respectively. The degradation models of volatile solids were consistent with those of protein under both aerobic and anaerobic conditions. The solubility of protein under aerobic digestion was greater than that under anaerobic digestion. Moreover, the humification index of dissolved organic matter of aerobic digestion was greater than that during anaerobic digestion. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：131 / 137

页数：7

共 36 条

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