组合曝气MBR技术研究开发与中试示范  

Research and Development of Intergrated Aeration MBR Technology and Pilot Demonstration

作　　者：谢杰 张劲松 彭赞国 Xie Jie;Zhang Jingsong;Peng Zanguo(CITIC Envirotech Ltd.,Guangzhou 510665,China)

机构地区：[1]中信环境技术(广州)有限公司,广东广州510665

出　　处：《广东化工》2024年第20期126-130,共5页Guangdong Chemical Industry

摘　　要：能耗高为行业公认的限制MBR技术进一步大规模发展的瓶颈之一。组合曝气MBR(IA MBR)技术通过特殊设计的组合曝气系统,收集生化池的所有贫氧尾气并将其转变为间歇脉冲大气泡用以冲刷悬浮膜组器,无需额外能耗且控制膜污染的效果显著。处理精细化工废水的中试示范结果表明,组合曝气系统曝气均匀,各界面曝气器的平均大气泡溢出间隔时间为8.54 s~11.62 s,标准偏差为0.81 s~0.99 s;膜系统运行稳定,恢复性清洗周期内(RC)透水率衰减速率为0.16 LMH/bar.h;组合曝气IA MBR工艺效果显著,COD、氨氮、TN去除率分别达到75%、88%、65%;在达到与水厂工艺相同水质的前提下,组合曝气MBR实现膜吹扫曝气零能耗,吨水能耗从1.02 kWh/m^(3)降至0.66 kWh/m^(3),水力停留时间从44 h降至6.25 h,污泥负荷、硝化速率、反硝化速率均为水厂所采用工艺A2O-MBR的3.5~4.5倍。High energy consumption is generally recognized as one of bottlenecks limiting the further large-scale development of MBR technology.Intergrated aeration MBR(IA MBR)technology collects all the oxygen-poor tail gas of biochemical tank and converts it into intermittent pulse large bubbles by a specially designed intergrated aeration system to brush membrane cassette without additional energy comsuption,which has a remarkable effect on controlling membrane pollution.The pilot demonstration results of fine chemical wastewater treatment show that intergrated aeration system has good aeration uniformity with average interval of large bubble overflow is 8.54 s~11.62 s,and its standard deviation is 0.81 s~0.99 s.The membrane system operates stably with the decay rate of water permeability during a recovery cleaning cycle(RC)is 0.16 LMH/bar.h.The intergrated aeration MBR(IA MBR)technology has a remarkable effect,and the removal rate of COD,ammonia nitrogen and TN reach 75%,88%and 65%respectively.On the premise of achieving the same water quality as the water plant process,IA MBR achieves zero energy consumption for membrane purging aeration,reduces the energy consumption from 1.02 kWh/m^(3) to 0.66 kWh/m^(3),and the hydraulic retention time from 44 hours to 6.25 hours.The sludge load,nitrification rate and denitrification rate are 3.5~4.5 times that of A2O-MBR.

关 键 词：组合曝气MBR(IA MBR) 节能增效 精细化工废水 悬浮膜组器 

分 类 号：TU992.3[建筑科学—市政工程]