Upgrading activated sludge systems and reduction in excess sludge

被引：22

作者：

Hazrati, Hossein ^{[1
]}

Shayegan, Jalal ^{[1
]}

机构：

[1] Sharif Univ Technol, Dept Chem & Petr Engn, Tehran, Iran

来源：

BIORESOURCE TECHNOLOGY | 2011年 / 102卷 / 22期

关键词：

Enriched municipal wastewater; Sludge reduction; Membrane bioreactor; Upflow anaerobic sludge blanket reactor; WASTE-WATER TREATMENT; DOMESTIC SEWAGE; MEMBRANE BIOREACTORS; UASB REACTOR; PERFORMANCE; FILTRATION; POLYMERS; PULP;

D O I：

10.1016/j.biortech.2011.08.112

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Most of 200 Activated Sludge Plant in Iran are overloaded and as a result, their efficiency is low. In this work, a pilot plant is manufactured and put into operation in one of the wastewater treatment plants in the west of Tehran. Instead of conventional activated sludge, a membrane bioreactor and an upflow anaerobic sludge blanket reactor used as a pretreatment unit in this pilot. For the sake of data accuracy and precision, an enriched municipal wastewater was opted as an influent to the pilot. Based on the attained result, the optimum retention time in this system was 4 h, and the overall COD removal efficiency was 98%. As a whole, the application of this retrofit would increase the plant's capacity by a factor of 5 and reducing the excess sludge by a factor of 10. The sludge volume index in the anaerobic reactor was about 12 after granulation occurred. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：10327 / 10333

页数：7

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