New technology of wastewater treatment using combined design of low-temperture archae and functional membrane

开发了一种厌氧消化与膜分离相结合的一体式厌氧膜生物反应器。采用实验室规模的SAMBR处理两种人工合成废水，考察了水力停留时间(HRT)对处理效果的影响。在水力停留时间为12h时，可溶合成废水和含悬浮固体合成废水的出水化学需氧量和生化需氧量分别为34、11 mg/L、19、8 mg/L，72%、65%的进水COD转化为甲烷。通过对古菌群落的克隆分析，在可溶合成废水反应器中，利用醋酸盐的甲烷菌占70%。相反，对于含有合成废水反应器的悬浮固体(SS)，甲烷杆菌和利用氢气的甲烷规则菌的检测速度是相同的。

A submerged anaerobic membrane bioreactor (SAMBR) combining anaerobic digestion and membrane separation was developed. A lab-scale SAMBR treating two kinds of synthetic wastewater were continuously operated at a room temperature to investigate the effect of hydraulic retention time (HRT) on the treatment performance. At HRT of 12 hours, the chemical oxygen demand (COD) and biochemical oxygen demand of effluents in the soluble synthetic wastewater and suspended solids contained synthetic sewage were 34, 11 mg/L, 19, 8 mg/L, and 72, 65% of input COD was converted to methane respectively. Based on the cloning analysis of Archaeal community, the acetate-utilizing Methanosaeta accounted for 70% in the soluble synthetic wastewater reactor. In contrast, about suspended solids (SS) contained synthetic wastewater reactor, Methanosaeta and hydrogen-utilizing Methanoregula were detected at the same rate.