剩余污泥热水解厌氧消化中试研究  

Pilot-scale study on thermal hydrolysis and anaerobic digestion of excess sludge

作　　者：稂时光 张健[2] 王双飞[2] 郑欢[2] 何奕明 周永信 

机构地区：[1]广西大学环境学院,南宁530004 [2]广西大学轻工及食品工程学院,南宁530004 [3]广西博世科环保科技股份有限公司,南宁530004

出　　处：《环境工程学报》2015年第1期431-435,共5页Chinese Journal of Environmental Engineering

基　　金：广西研究生教育创新计划资助项目(YCBZ20130004)

摘　　要：针对糖纸厂污水活性污泥法处理后剩余污泥进行热水解厌氧消化中试研究,结果表明,热水解预处理工艺能够有效改善污泥性质,SCOD与VFA分别提高5.2和7.6倍,在厌氧消化过程中随着水力停留时间(HRT)缩短,消化罐有机负荷和比沼气产率提高,在2.5 kg VS/(m3·d)、HRT=12 d条件下达到28.1 Nm3/t。整个厌氧消化过程中无过度酸化现象发生,沼气甲烷含量稳定,平均达到60%。This pilot scale experiment applied thermal hydrolysis and anaerobic digestion process to treat excessive sludge from sugar and paper industry. The results show that thermal hydrolysis treatment effectively enhances the bioavailability of sludge,the soluble chemical oxygen demand( SCOD) and volatile fatty acids( VFAs) increase up to 5. 2 times and 7. 6 times,respectively. By shortening the hydraulic retention time( HRT),the organic loading rate( OLR) and gas production rate increase. A specified gas yield of 28. 1 Nm3/ t is reached under OLR of 2. 5 kg VS /( m3·d) and HRT of 12 d. No VFAs accumulation is detected during the experiment and the average methane content keeps around 60%.

关 键 词：污泥 热水解 厌氧消化 

分 类 号：X703[环境科学与工程—环境工程]