Impact of initial biodegradability on sludge anaerobic digestion enhancement by thermal pretreatment

被引：117

作者：

Carrere, Helene ^{[1
]}

Bougrier, Claire ^{[1
]}

Castets, Delphine ^{[1
]}

Delgenes, Jean Philippe ^{[1
]}

机构：

[1] INRA, UR050, Lab Biotechnol Environm, F-11100 Narbonne, France

来源：

JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING | 2008年 / 43卷 / 13期

关键词：

thermal hydrolysis; methanization; biogas; biodegradability; waste-activated sludge;

D O I：

10.1080/10934520802293735

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 [工学]; 0830 [环境科学与工程];

摘要：

Thermal treatments with temperature ranging from 60 to 210 degrees C were applied to 6 waste-activated sludge samples originating from high or medium load, extended aeration wastewater treatment processes that treated different wastewaters (urban, urban and industrial or slaughterhouse). COD sludge solubilisation was linearly correlated with the treatment temperature on the whole temperature range and independently of the sludge samples. Sludge batch mesophilic biodegradability increased with treatment temperature up to 190 degrees C. In this temperature range, biodegradability enhancement or methane production increase by thermal hydrolysis was shown to be a function of sludge COD solubilisation but also of sludge initial biodegradability. The lower the initial biodegradability means the higher efficiency of thermal treatment.

引用

页码：1551 / 1555

页数：5

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