Anaerobic co-digestion of grease sludge and sewage sludge: The effect of organic loading and grease sludge content

被引：67
|
作者：
Noutsopoulos, C. [1 ]
Mamais, D. [1 ]
Antoniou, K. [1 ]
Avramides, C. [1 ]
Oikonomopoulos, P. [1 ]
Fountoulakis, I. [1 ]
机构：
[1] Natl Tech Univ Athens, Sch Civil Engn, Dept Water Resources & Environm Engn, Athens 15780, Greece
来源：
BIORESOURCE TECHNOLOGY | 2013年 / 131卷
关键词：
Anaerobic co-digestion; Lipids; Grease sludge; Organic loading; Biogas production; CHAIN FATTY-ACIDS; TRAP SLUDGE; METHANE PRODUCTION; BIOGAS PRODUCTION; MUNICIPAL SLUDGE; BED REACTORS; FOOD WASTE; LIPIDS; OIL; ENHANCEMENT;
D O I：
10.1016/j.biortech.2012.12.193
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
The objective of this study was to assess the feasibility of co-digesting grease sludge (GS) originating from domestic wastewater along with sewage sludge (SS) and to assess the effect of organic loading rate (OLR) and GS content on process performance. Three lab-scale semi-continuous fed mesophilic anaerobic digesters were operated under various OLRs and SS-GS mixtures. According to the results, addition of GS up to 60% of the total VS load of feed resulted in a 55% increase of biogas yield (700 vs. 452 m(3)/tVS(added)) for an OLR of 3.5 kg VS/m(3)/d. A stable and satisfactory operation of anaerobic co-digestion units can be achieved for a GS-OLR up to 2.4 kg VSGs/m(3)/d. For such values biogas yield is linearly proportional to the applied GS-OLR, whereas biogas yield is minimal for GS-OLR higher than this limit and acidification of the anaerobic digestion units is taking place. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：452 / 459
页数：8
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