Spatial distribution of dynamics characteristic in the intermittent aeration static composting of sewage sludge

被引：71

作者：

Wang, Ke ^{[1
]}

Li, Weiguang ^{[1
]}

Guo, Jianhua ^{[1
]}

Zou, Jinlin ^{[1
]}

Li, Yunbei ^{[1
]}

Zhang, Lei ^{[1
]}

机构：

[1] Harbin Inst Technol, Sch Municipal & Environm Engn, State Key Lab Urban Water Resource & Environm SKL, Harbin 150090, Heilongjiang, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2011年 / 102卷 / 09期

关键词：

Composting; Sludge treatment; Spatial distribution; Oxygen consumption; Microbial activity; BULKING AGENT; WASTE-WATER; FOOD WASTE; MANURE; PILE; BIOSOLIDS; PARAMETERS; MATURITY; SYSTEMS; STRAW;

D O I：

10.1016/j.biortech.2011.01.083

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Spatial differences and temporal changes in biological activity characteristics were investigated in a static reactor using intermittent aeration during the sewage sludge composting process. Pumice was proposed as a bulking agent in the composting of sewage sludge. Variations in temperature, moisture, oxygen level, volatile solids, specific oxygen uptake rate (SOUR) and dehydrogenase activity (DHA) were determined during 28 days of composting. The peak temperature in the upper region of the reactor was 10 degrees C higher than that at the bottom. The moisture level in the middle region was significantly higher than that of other positions. Analysis of SOUR and DHA indicated that the lowest level of sludge stability was at the bottom region. These spatial and temporal differences in biochemical dynamics in the static system could extend the composting period and affect product uniformity. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：5528 / 5532

页数：5

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