常温下内循环厌氧反应器的启动研究

研究了内循环厌氧反应器(IC反应器)在常温下处理葡萄糖配水的启动特性。结果表明:在运行温度为25~35℃的条件下,反应器经70 d启动完成,且IC反应器具有较好的处理效果,反应器内能形成大量的颗粒污泥。启动完成后,进水COD浓度在3 000 mg/L左右时,COD去除率一直保持在95%以上,出水COD浓度维持在200 mg/L左右。当HRT为5.8 h,容积负荷为11.9 kg/(m3.d)时,出水VFA低于200 mg/L,产气量为33 L/d,反应器运行正常。

STUDY ON THE START-UP OF THE INTERNAL CIRCULATION ANAEROBIC REACTOR UNDER NORMAL TEMPERATURE

The start-up characteristics of the internal circulation(IC) anaerobic reactor were studied at normal temperature.The results showed that start-up of IC reactor was finished after 70 d at 25～(35 ℃,) and the IC reactor was capable of removing pollutants from the wastewater. A large amount of granular sludge was formed in the reactor.After finishing start-up,the influent contained COD((3 000 mg/L),) the COD removal rate was over 95%,COD was about 200 mg/L in effluent.When hydraulic retention time(HRT) and the corresponding COD volume load were 5.8 h and 11.9 kg/(m~3·d),VFA content was less than 200 mg/L,gas production was 33 L/d,and the reactor run normally.