Bioflocculation of grey water for improved energy recovery within decentralized sanitation concepts

被引：66

作者：

Leal, L. Hernandez ^{[1
,2
]}

Temmink, H. ^{[1
,2
]}

Zeeman, G. ^{[1
]}

Buisman, C. J. N. ^{[1
,2
]}

机构：

[1] Wageningen Univ, Subdept Environm Technol, NL-6700 EV Wageningen, Netherlands

[2] Wetsus, Ctr Excellence Sustainable Water Technol, NL-8900 CC Leeuwarden, Netherlands

来源：

BIORESOURCE TECHNOLOGY | 2010年 / 101卷 / 23期

关键词：

Bioflocculation; Grey water; Mineralization; Methane production; Separation at source; CONCENTRATED BLACK WATER; SYSTEMS; REACTOR; FATE;

D O I：

10.1016/j.biortech.2010.07.047

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Bioflocculation of grey water was tested with a lab-scale membrane bioreactor in order to concentrate the COD. Three concentration factors were tested based on the ratio of sludge retention time (SRT) and hydraulic retention time (HRT): 3.8 and 12. COD concentration factor was up to 7.1, achieving a final concentration of 7.2 g COD L-1. Large fractions of suspended COD were recovered in the concentrate (57%, 81% and 82% at SRT/HRT ratios of 3, 8 and 12, respectively) indicating a strong bioflocculation of grey water. A maximum of 11% of COD mineralization of grey water was measured at the longest SRT tested (1 d). The integration of bioflocculation of grey water in decentralized sanitation concepts may increase the overall production of methane by 73%, based on the biogas produced by black water only. Therefore, bioflocculation is a promising grey water pre-treatment step for energy recovery within decentralized sanitation concepts. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：9065 / 9070

页数：6

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