Biological sludge solubilisation for reduction of excess sludge production in wastewater treatment process

被引：4
|
作者：
Yamaguchi, T.
Yao, Y.
Kihara, Y.
机构：
[1] JFE R&D Corp, Kawasaki Ku, Kawasaki, Kanagawa 2100855, Japan
[2] JFE Engn Corp, Chiyoda Ku, Tokyo 1000005, Japan
来源：
WATER SCIENCE AND TECHNOLOGY | 2006年 / 54卷 / 05期
关键词：
chemical and biological treatment; reduction of excess sludge production; sludge disintegration;
D O I：
10.2166/wst.2006.546
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A novel sludge disintegration system (JFE-SD system) was developed for the reduction of excess sludge production in wastewater treatment plants. Chemical and biological treatments were applied to disintegrate excess sludge. At the first step, to enhance biological disintegration, the sludge was pretreated with alkali. At the second step, the sludge was disintegrated by biological treatment. Many kinds of sludge degrading microorganisms integrated the sludge. The efficiency of the new sludge disintegration system was confirmed in a full-scale experiment. The JFE-SD system reduced excess sludge production by approximately 50% during the experimental period. The quality of effluent was kept at quite a good level. Economic analysis revealed that this system could significantly decrease the excess sludge treatment cost.
引用
收藏
页码：51 / 58
页数：8
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