分置式膜生物反应器应用于城市污水回用中试研究

Pilot-Scale Test on the Reuse Application of Urban Wastewater by Using Membrane Bio-Reactor

采用中试规模的(处理水量为1.5t/h)缺氧-好氧(anoxic_oxicprocess,A/O)分置式膜生物反应器(membraneBio_reactor,MBR)处理回用城市污水.试验结果表明,系统对化学需氧量(chemicaloxygendemand,COD)的去除率达到90%以上,对氨氮(NH3N)的去除率达到95%以上,出水COD的质量浓度小于20mg/L、NH3 N的质量浓度小于1mg/L,浊度小于0.1NTU,且无色、无悬浮物(suspendedsolid,SS)及大肠杆菌检出,系统出水水质完全符合城市污水再生利用、城市杂用水和城市污水再生利用景观环境用水水质标准.

A pilot-scale test of the anoxic-oxic process is carried out to treat and reuse municipal wastewater. The consequence of the test lasting over 160 days indicate, in which removal rate of COD and NH3-N is above 90% and 95% respectively. The COD, NH3-N and turbidity of the effluent water is lower to 20 mg/L, 1 mg/L and 0.1 NTU respectively. The effluent is colorness, noss and coliform are not detected in the effluent, the effluent quality is consistent, stable and totally conform to the the reuse of urban recycling water - Water quality standard for scenic environment use and GB/T 18920-2002 reuse of recycling water for urban Water quality standard for urban miscellaneous water consumption.