Anaerobic Digestion of Sewage Sludge: Sludge Concentration Influencing Energy Efficiency

被引：0
|
作者：
Cao, Yucheng [1 ,2 ]
Pawlowski, Artur [2 ]
Zhang, Jin [1 ]
Shan, Shengdao [1 ]
机构：
[1] Zhejiang Agr & Forestry Univ, Sch Environm & Resource, Hangzhou 311300, Zhejiang, Peoples R China
[2] Lublin Univ Technol, Fac Environm Engn, PL-20618 Lublin, Poland
来源：
2011 INTERNATIONAL CONFERENCE ON ENVIRONMENTAL SYSTEMS SCIENCE AND ENGINEERING (ICESSE 2011), VOL 1 | 2011年
关键词：
Energy efficiency; sludge concentration; anaerobic digestion; sewage sludge; WASTE-ACTIVATED-SLUDGE;
D O I：
暂无
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The effect of sludge concentration on anaerobic digestion of sewage sludge was evaluated from energy-efficiency perspective. Mass and energy balance was carried out to investigate the energy yield (in the biogas form) and energy consumption (sludge heating, mixing, and heat loss compensation). The results show that energy saving potential contributed by heating sludge with an increased sludge concentration is impressive, in particular when the sludge concentration increases from 3 to 6%. The heat loss is also considerable, which accounts for 45.6-70.8% of the energy requirements for heating sludge, in the range of the sludge concentration of 3-10%. The results suggest that appropriate increase of feed sludge concentration is a significant option to improve energy efficiency for AD process.
引用
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页码：57 / 62
页数：6
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