Effect of HRT on mesophilic acidogenesis of dairy wastewater

被引：82

作者：

Fang, HHP ^{[1
]}

Yu, HQ ^{[1
]}

机构：

[1] Univ Hong Kong, Dept Civil Engn, Ctr Envir Engn Res, Hong Kong, Hong Kong, Peoples R China

来源：

JOURNAL OF ENVIRONMENTAL ENGINEERING | 2000年 / 126卷 / 12期

关键词：

D O I：

10.1061/(ASCE)0733-9372(2000)126:12(1145)

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Effect of hydraulic retention time (HRT) on the acidogenesis of dairy wastewater was studied using an upflow reactor at pH 5.5, 37 degreesC, and six HRTs ranging from 4 to 24 h. Results showed that the degree of acidification increased rapidly with HRT from 28.2% at 4 h to 54.1% at 12 h; further increase of HRT to 16 and 24 h only increased acidification slightly to 55.8 and 59.1%, respectively. The biodegradability of the three major constituents in dairy wastewater increased with HRT, following the order of carbohydrates > proteins > lipids. The predominant products were acetate, propionate, butyrate, lactate, and ethanol.

引用

页码：1145 / 1148

页数：4

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