Modeling biodegradation characteristics of grey water in membrane bioreactor

被引：37

作者：

Hocaoglu, S. Murat ^{[1
]}

Atasoy, E. ^{[1
]}

Baban, A. ^{[1
]}

Orhon, D. ^{[2
]}

机构：

[1] TUBITAK Marmara Res Ctr, Inst Environm, TR-41470 Gebze, Kocaeli, Turkey

[2] Istanbul Tech Univ, ITU, Dept Environm Engn, Insaat Fak, TR-34469 Istanbul, Turkey

来源：

JOURNAL OF MEMBRANE SCIENCE | 2013年 / 429卷

关键词：

Grey water; Biodegradation; Modeling; Membrane bioreactor; Process kinetics; DOMESTIC WASTE-WATER; ACTIVATED-SLUDGE; GREYWATER TREATMENT; ORGANIC-MATTER; SIMULTANEOUS NITRIFICATION; MICROBIAL PRODUCTS; COD FRACTIONATION; REUSE; SYSTEMS; DENITRIFICATION;

D O I：

10.1016/j.memsci.2012.11.012

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The study evaluated the fate of grey water in a membrane bioreactor (MBR). It mainly involved the evaluation of system performance based on modeling biodegradation characteristics of grey water. The investigation was conducted on grey water using a pilot-scale MBR operated at a sludge age of 60 days. The system secured full removal of biodegradable organics with only 10 mg/L residual COD in the effluent, suitable for reuse. Model calibration of cyclic dissolved oxygen profiles fitted the experimental data and defined all related model coefficients with a lower maximum growth rate and lower hydrolysis rates compared with domestic sewage. Model simulation using process kinetics confirmed full removal of available biodegradable COD and generation of soluble microbial products. Significantly, higher soluble COD levels in the bulk liquid compared with the process effluent could be explained by means of cake filtration in the membrane, capturing larger fractions of soluble residual COD. Consequently, entrapment and partial biodegradation of soluble residual organics ensured the very low levels of effluent COD. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：139 / 146

页数：8

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