Microbial community composition of a down-flow hanging sponge (DHS) reactor combined with an up-flow anaerobic sludge blanket (UASB) reactor for the treatment of municipal sewage

被引：65

作者：

Kubota, Kengo ^{[1
]}

Hayashi, Mikio ^{[1
]}

Matsunaga, Kengo ^{[1
,2
]}

Iguchi, Akinori ^{[3
]}

Ohashi, Akiyoshi ^{[4
]}

Li, Yu-You ^{[1
]}

Yamaguchi, Takashi ^{[2
]}

Harada, Hideki ^{[1
]}

机构：

[1] Tohoku Univ, Dept Civil & Environm Engn, Aoba Ku, Sendai, Miyagi 9808579, Japan

[2] Nagaoka Univ Technol, Dept Civil & Environm Engn, Nagaoka, Niigata 9402188, Japan

[3] Niigata Univ Pharm & Appl Life Sci, Fac Appl Life Sci, Niigata, Niigata 9568603, Japan

[4] Hiroshima Univ, Dept Social & Environm Engn, Higashihiroshima, Hiroshima 7398527, Japan

来源：

BIORESOURCE TECHNOLOGY | 2014年 / 151卷

基金：

日本学术振兴会;

关键词：

Ammonia oxidation; Down-flow hanging sponge (OHS); Microbial community composition; Sewage treatment; WASTE-WATER TREATMENT; AMMONIA-OXIDIZING BACTERIA; REAL-TIME PCR; ACTIVATED-SLUDGE; TREATMENT SYSTEM; NITRIFYING BACTERIA; TREATMENT PLANTS; SCALE UASB; SP-NOV; QUANTIFICATION;

D O I：

10.1016/j.biortech.2013.10.058

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

The microbial community composition of a down-flow hanging sponge (OHS) reactor in an up-flow anaerobic sludge blanket (UASB)-DHS system used for the treatment of municipal sewage was investigated. The clone libraries showed marked differences in microbial community composition at different reactor heights and in different seasons. The dominant phylotypes residing in the upper part of the reactor were likely responsible for removing organic matters because a significant reduction in organic matter in the upper part was observed. Quantification of the amoA genes revealed that the proportions of ammonia oxidizing bacteria (AOB) varied along the vertical length of the reactor, with more AOB colonizing the middle and lower parts of the reactor than the top of the reactor. The findings indicated that sewage treatment was achieved by a separation of microbial habitats responsible for organic matter removal and nitrification in the DHS reactor. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：144 / 150

页数：7

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