耐酸厌氧消化污泥处理餐厨垃圾  

Treatment of kitchen wastes using acid-tolerant anaerobic digestion sludge

作　　者：申嫄[1] 邸玉翠[1] 吴桂菊[1] 彭绪亚[1] 

机构地区：[1]重庆大学三峡库区生态环境教育部重点实验室,重庆400045

出　　处：《环境工程学报》2014年第2期692-696,共5页Chinese Journal of Environmental Engineering

基　　金：国家"十一五"科技支撑计划项目(2010BAC67B01)

摘　　要：采用耐酸驯化的厌氧消化污泥处理餐厨垃圾，在酸性条件下（pH=4．5），对实验装置容积负荷从1．0kgVS／（m3·d）分9次逐级增加到5．0kgVS／（m3·d）的过程进行了跟踪监测，并较深入地研究了驯化污泥代谢活性和处理效果。实验结果表明，pH4．5的耐酸厌氧消化污泥，最佳投加负荷约为4．5kgVS／（m3·d），此负荷下容积产气率，CH4含量平均值均达最大，分别为1．68m3／（m3·d），75．0％。耐酸厌氧消化装置持续增料运行46d，产甲烷菌仍能保持较高的活性，其COD去除率范围为40．4％-75．0％，仍能保持pH7．2时处理效果的65．0％-91．8％，表明在低pH、低碱度下实现稳定的产甲烷过程是可行的。Under acidic conditions （pH -4.5） , kitchen wastes were treated by acid-tolerant anaerobic di- gestion sludge. We monitored the process of volumetric loading rate increasing from 1.0 kg VS/（ m3 . d） to 5.0 kg VS/（m3. d） and studied the metabolic activity and the treatment effect of acid-tolerant anaerobic digestion sludge intensively. The results showed that the best adding load of acid-tolerant anaerobic digestion sludge was 4.5 kg VS/（m3 .d）. At this adding load, both biogas production rate and the average of methane content reached the maximum, which were 1.68 m3/（m3 .d） and 75.0% respectively. During the 46 days of the acid anaerobic digestion device running under continuous feeding conditions, methane bacteria could still keep high activity, the COD removal rate varied from 40.4% to 75.0% , which was 65.0% - 91.8% of the value when pH = 7.2, the results showed that methane production can still keep stable at low pH and low alkalinity.

关 键 词：耐酸厌氧消化污泥 低PH值 餐厨垃圾 厌氧消化 

分 类 号：X705[环境科学与工程—环境工程]