Excess sludge production and the stable operational condition of a submerged membrane activated sludge process

被引：2
|
作者：
Bhatta, CP
Kawasaki, K
Matsuda, A
Maehana, Y
Yamaguchi, M
Omori, D
机构：
[1] Ehime Univ, Dept Appl Chem, Matsuyama, Ehime 7908577, Japan
[2] Daiki Co, Environm Facilities, Matsuyama, Ehime 7900923, Japan
来源：
JOURNAL OF CHEMICAL ENGINEERING OF JAPAN | 2006年 / 39卷 / 02期
关键词：
activated sludge process; submerged membrane; excess sludge production; stable operational condition; sludge retention time;
D O I：
10.1252/jcej.39.237
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Laboratory scale submerged membrane activated sludge process (SMASP) units were operated at various sludge retention times (SRTs) (9.6-498 d) and BOD loadings (0.25-1.3 kg/(m(3).-d)). Under these conditions, the quantity of excess sludge production and the process stability was studied, using synthetic wastewater. The stabilized MLSS was increased with an increase of SRT and BOD loading. The excess sludge production was decreased with an increase of SRT and decrease of BOD loading. The excess sludge production in SMASP at long SRT and low BOD loading was significantly smaller than the conventional activated sludge process. Various test conditions proved that the long SRT and low BOD loading were suitable operational conditions for long stable operation of SMASP.
引用
收藏
页码：237 / 240
页数：4
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