Effects of organic loading rates on reactor performance and microbial community changes during thermophilic aerobic digestion process of high-strength food wastewater

被引：23

作者：

Jang, Hyun Min ^{[1
]}

Lee, Jae Won ^{[1
]}

Ha, Jeong Hyub ^{[1
,2
]}

Park, Jong Moon ^{[1
,2
,3
]}

机构：

[1] Pohang Univ Sci & Technol, Sch Environm Sci & Engn, Pohang 790784, South Korea

[2] Pohang Univ Sci & Technol, Dept Chem Engn, Pohang 790784, South Korea

[3] Pohang Univ Sci & Technol, Div Adv Nucl Engn, Pohang 790784, South Korea

来源：

BIORESOURCE TECHNOLOGY | 2013年 / 148卷

基金：

新加坡国家研究基金会;

关键词：

Food wastewater; Organic loading rate (OLR); Thermophilic aerobic digestion (TAD); Protease activity; Microbial community; ANAEROBIC-DIGESTION; SP-NOV; SLUDGE; IDENTIFICATION; STEAROTHERMOPHILUS; BIODEGRADATION; ENHANCEMENT; STRAIN; ATAD;

D O I：

10.1016/j.biortech.2013.08.090

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

To evaluate the applicability of single-stage thermophilic aerobic digestion (TAD) process treating high-strength food wastewater (FWW), TAD process was operated at four organic loading rates (OLRs) from 9.2 to 37.2 kg COD/c d. The effects of OLRs on microbial community changes were also examined. The highest volumetric removal rate (13.3 kg COD/m(3) d) and the highest thermo-stable protease activity (0.95 unit/mL) were detected at OLR = 18.6 kg COD/m(3) d. Denaturing gradient gel electrophoresis (DGGE) profiles and quantitative PCR (qPCR) results showed significant microbial community shifts in response to changes in OLR. In particular, DGGE and phylogenetic analysis demonstrate that the presence of Bacillus sp. (phylum of Firmicutes) was strongly correlated with efficient removal of organic particulates from high-strength food wastewater. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：261 / 269

页数：9

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