Biodegradability and mesophilic co-digestion of municipal sludge and scum

被引：2

作者：

Young, Bradley ^{[1
]}

Delatolla, Robert ^{[1
]}

Kennedy, Kevin ^{[1
]}

机构：

[1] Univ Ottawa, Dept Civil Engn, Ottawa, ON K1N 6N5, Canada

来源：

BIOPROCESS AND BIOSYSTEMS ENGINEERING | 2013年 / 36卷 / 11期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Anaerobic digestion; Mesophilic; Co-digestion; Scum; Biological methane potential (BMP); Pretreatment; PH;

D O I：

10.1007/s00449-013-0945-z

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

The objective of this study is to investigate and optimize the co-digestion of scum with thickened waste activated sludge (TWAS) and primary sludge (PS) undergoing mesophilic anaerobic digestion. The effect of scum loading on the co-digestion of PS, TWAS and scum has shown to have a significant impact on the ultimate cumulative biogas production and on the specific biogas production between 20 and 40 days of digestion, while the effects of the scum holding time within the scum concentrator and temperature of the scum concentrator did not demonstrate a significant effect on the ultimate or specific biogas production. The study demonstrates that care must be taken to avoid inhibitory effects and potential souring of digesters due to scum overloading and specifically scum overloading in combination with long holding times of scum within the scum concentrator at elevated temperatures.

引用

页码：1703 / 1714

页数：12

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