污泥高温厌氧消化产甲烷及病原指示微生物灭活的研究  

Study on methane producing bacteria and pathogenic microorganism inactivation by thermophilic anaerobic digestion

作　　者：操宏庆[1] 陆栋雷[1] 石林[1] 章菲菲[1] 胡真虎[1] 

机构地区：[1]合肥工业大学土木与水利工程学院市政工程系,合肥230009

出　　处：《工业用水与废水》2013年第5期78-81,共4页Industrial Water & Wastewater

基　　金：国家自然科学基金(51078122);教育部新世纪优秀人才支持计划(NCET-11-0624);国家水污染控制重大专项(2012ZX07103-001)

摘　　要：试验研究了剩余污泥在适宜碳氮质量比条件下，高温厌氧消化对产甲烷及病原指示微生物灭活的影响，分析比较了厌氧消化前、后污泥中病原指示微生物数量的变化。结果表明，高温厌氧消化能够有效地将污泥中的有机物分解，产生沼气，并且能够有效地杀灭上清液和污泥中的大肠杆茵、粪大肠杆菌和沙门氏茵。经过28d，55℃的高温厌氧消化后，消化液中总大肠杆菌下降约2．9个数量级、粪大肠杆菌下降约2．6个数量级，消化污泥中总大肠杆菌量下降3．4-3．6个数量级、粪大肠杆菌量下降3．8-4.3个数量级．而且在消化液和消化污泥中均未检测到沙门氏茵的存在。在适宜的碳氮质量比的条件下。高温厌氧消化能够有效地杀灭消化液和消化污泥中的病原指示微生物．The effect of thermophilic anaerobic digestion on inactivation of methane producing bacteria and pathogenic microorganism in excess sludge with proper C/N ratio was studied, the pathogenic microorganism num- bers in the sludge before and after the anaerobic digestion were analyzed and compared. The results showed that, thermophilic anaerobic digestion could not only availably resolve the organic matters in the sludge and produce methane at the same time, but also kill the colon bacillus, fecal coliform and salmonella in the supernatant and the sludge effectively. Through a 28-d thermophilic anaerobic digestion at 55 ℃, the number of total coliforms and fecal coliform in the digested liquid decreased about 2.9 and 2.6 orders of magnitude respectively, and the number of those bacillus in the digested sludge decreased 3.4 - 3.6 and 3.8 - 4.3 orders of magnitude respec- tively; furthermore, no salmonella was found in digested liquid or digested sludge. It could draw a conclusion that, thermophilic anaerobic digestion could effectively kill pathogenic microorganism in digested liquid and di- gested sludge with proper C/N mass ratio.

关 键 词：厌氧消化 剩余污泥 甲烷 总大肠杆菌 粪大肠杆菌 沙门氏菌 

分 类 号：X833[环境科学与工程—环境工程]