两段进水生物膜法OOA-MBR工艺强化生物脱氮
Chinese Journal of Environmental Engineering(2016)
Abstract
开发出一种两段进水生物膜法好氧/好氧/缺氧-膜生物反应器(OOA-MBR)强化生物脱氮工艺,以模拟生活污水为研究对象,重点考察了流量分配比、曝气方式和水力负荷等因素对系统运行效果的影响,并对工艺控制参数进行了优化.实验结果表明,在系统HRT 4.8 h,流量分配比为1∶1,后置MBR池曝气方式采取Air-on 4 min/Air-off 6 min模式,进水COD(380 ±20) mg·L-1、NH4+-N(35±5)mg· L-1、TN(35±5)mg·L-1时,出水COD、NH4+-N和TN去除率分别达到93.9%、91.8%和77.7%,出水水质满足《城镇污水处理厂污染物排放标准》(GB 18918-2002)一级A标准.
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