Abstract:
To increase the up-flow velocity of IC anaerobic reactor at the beginning of starting up stage and improve the mass transfer function between water and sludge,IC reactor has been put into operation when the reflux ratio is 3∶1.The results show that the reactor can achieve higher COD removal rate in a comparatively short time.The gas productivity effect and methane productivity effect of the reactor reach the maximum,namely 0.43 m3/(kg·d) and 0.21 m3/(kg·d),respectively,when its COD is 8 000 mg/L.When the effluent pH is 6.0-7.5,and the effluent ORP is about-300 mV,the alkalinity of effluent is higher than that of influent.Thus,granular sludge is cultivated successfully.
Key words:
internal circulation anaerobic reactor,
external circulation,
reflux ratio
摘要：
为提高IC厌氧反应器在启动初期的上升流速,改善其传质作用,在回流比3∶1的条件下,启动运行IC反应器。结果显示,反应器能够在较短的时间内达到较高的COD去除率。在COD为8 000 mg/L时,反应器产气效率和产甲烷效率达到最大,分别为0.43、0.21 m3/(kg.d);出水pH在6.0～7.5,出水ORP在-300 mV左右,出水碱度大于进水碱度,成功培育出了颗粒污泥。
关键词:
IC厌氧反应器,
外循环,
回流比
CLC Number:
Gu Qing, Luo Haixia, Zhang Yue, Liu Min. Study on the start-up of internal circulation (IC) anaerobic reactor under external circulation state[J]. INDUSTRIAL WATER TREATMENT, 2013, 33(4): 25-27.
辜清, 罗海霞, 张悦, 刘敏. IC厌氧反应器在外循环状态下启动的试验研究[J]. 工业水处理, 2013, 33(4): 25-27.