期刊
BIOSYSTEMS ENGINEERING
卷 111, 期 3, 页码 243-250出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.biosystemseng.2011.11.014
关键词
-
Experiments in a laboratory-scale hybrid multi-stage unit system (HMUS) for pig slurry treatment were conducted to demonstrate the feasibility of using autothermal thermophilic aerobic digestion (ATAD), coagulation and expanded granular sludge bed (EGSB) followed by sequencing batch reactor (SBR) system. Contaminants in pig slurry with high organic matter, nitrogen (N) and phosphorus (P) content were almost completely removed in the HMUS. Concentrations of volatile solids (VS) and chemical oxygen demand (COD) were 2.76 and 3.48% respectively, and they were reduced by about 98.9% by the process. The overall nitrogen reduction rates for total nitrogen and ammoniacal nitrogen were 97.9 and 98.3% respectively and were attained through NH3 gas emission, coagulated sludge disposal and nitrification-denitrification process. The overall phosphorus reduction rate for total phosphorous was 98.2% and this was also attained by coagulation and by the luxury-uptake sludge disposal in the HMUS. Faecal coliform density was reduced to <10(4) CFU g(-1) total solids. The EGSB unit system produced biogas and CH4 in the range of 0.42-0.86 and 0.21-0.62 m(3) kg(-1) [VS removed], respectively. The biogas produced by the HMUS anaerobic digester contained 324 +/- 37 ppm (v/v) [H2S]. (C) 2011 IAgrE. Published by Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据