基于AO-MBR污水处理技术的中水回用研究

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中图分类号：TP392；TQ085 文献标志码：A 文章编号：1001-5922（2025）12-0185-04

Study onreclaimed waterreusebased on AO-MBR wastewater treatment technology

SHIShuai

（Nanjing Chengzhi Yongqing Energy Science and Technology Co.，Ltd.，Nanjing 210047，China）

Abstract： In order to explore the application effectof anoxic/oxic-membrane bioreactor（AO-MBR）process in reclaimed water reuse，this studysignificantly improved the treatment effciency of domestic sewage byoptimizingoperating parameters.In this study，AO-MBR was used as the core process，combined with membrane separation technology and biological treatment technology.From the three stages of system start-up period，optimal commissioning period andstableoperationperiod，theremovalefectsofchemical oxygendemand，ammonianitrogen，totalnitrogen and total phosphorus weresystematically evaluated byadjusting hydraulic retention time and aeration mode.The results showedthat when the hydraulic retention time was 8h inthe initial stage，theremovalrateofchemical oxygen demand was only 68.70% ，and the effluent concentration did not meet the reuse standard.By changing the Roots blower into 24h continuous aeration and adding 10% volume ratio of activated sludge，when thehydraulic retention time was8h，theremovalratesofchemicaloxygendemand，ammonianitrogen，total nitrogenandtotalphosphorus reached 97.36% 90.93% 95.43% and 92.24% ，respectively.When the hydraulic retention time was 4h，the removal rate of each index remained above 70% ，the removal rate of total nitrogen and ammonia nitrogen exceeded 90 % ， and the effuent quality was stable andup to standard.Finally，the average removal rates of chemical oxygen demand，ammonia nitrogen，total nitrogen and total phosphorus were 93.18% ， 90.21% ，92.09% and 89.96 % ，respectively，which met therequirementsof reclaimed water reuse.In summary，this study confirmed that the AO-MBR process can ensure the treatment effect while taking into account the economyunder the conditions of continuous aeration，appropriate amount of activated sludge addition and hydraulic retention time of 4h

KeyWords：AO-MBR process;reclaimedwaterreuse;pollutantremovalrate;hydraulicretentiontime;activatedsludge

随着全球水资源短缺问题日益严峻，环境保护和可持续发展已成为国际社会关注的焦点。（剩余4810字）