温度对两相厌氧消化工艺处理化工废水的影响  

Influence of Temperature on Chemical Wastewater Treatment by Two-phase Anaerobic Digestion Process

作　　者：姜伟立[1] 蒋永伟[1] 邹敏[1] 曹蕾[1] 蒋彬[2] 王国芳[3] 

机构地区：[1]江苏省环境科学研究院江苏省环境工程重点实验室,江苏南京210036 [2]重庆交通大学河海学院,重庆400074 [3]东南大学能源与环境学院,江苏南京210096

出　　处：《中国给水排水》2011年第17期68-70,74,共4页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2008ZX07101-003)

摘　　要：考察了温度对两相厌氧消化工艺处理化工废水的影响。中试结果表明,温度对产甲烷过程的影响较大,当温度>20℃时,对COD的去除效果基本保持稳定;当温度<20℃时,对COD的去除率随温度的降低而直线下降;当温度≤5℃时,产甲烷功能基本丧失,酸化产物在产甲烷阶段逐渐积累,导致pH值有所降低。温度对酸化阶段的COD去除效果影响不大,但当温度降至0℃左右时,由于微生物活性受到明显抑制,水解酸化功能基本丧失。The influence of temperature on chemical wastewater treatment by two-phase anaerobic digestion process was investigated. The pilot-scale experiment results show that temperature has a great influence on methanogenesis process. COD removal efficiency remains stable when the temperature is higher than 20 ℃, COD removal rate precipitously declines when the temperature is below 20 ℃. Methanogenesis function is lost when the temperature is equal to or less than 5 ℃ and products of acidogenesis are accumulated in methanogenesis stage with a decline of pH. Although temperature has a little influence on COD removal efficiency in acidogenesis, acid0genesis function is lost because microbial activity is greatly inhibited when the temperature drops to 0 ℃ or so.

关 键 词：两相厌氧消化工艺 温度 产甲烷 水解酸化 化工废水 

分 类 号：X703[环境科学与工程—环境工程]