气浮-MBR耦合工艺对铝型材脱脂废水乳化油的分离效能研究

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关键词：膜生物反应器（MBR）；铝型材脱脂废水；乳化油分离中图分类号：X703 文献标识码：A 文章编号：1008-9500（2025）11-0004-03DOI： 10.3969/j.issn.1008-9500.2025.11.002

Study on the Separation Efficiency of Emulsified Oil from Degreasing Wastewater of Aluminum Profiles Using Air Flotation - MBR Coupled Process

LU Yongfen （Foshan Huansheng Ecological Environment Technology Co.，Ltd.，Foshan528231，China）

Abstract： The experiment uses the air flotation- Membrane Bio-Reactor（MBR） coupled process to treat degreasing wastewaterof aluminum profiles，withafocusonimproving theseparationeficiencyofemulsifiedoil，andtheffectsof flocculantdosage and Hydraulic Retention Time （HRT）onthetreatmenteficiencyare investigated.Theresultsshow that when the dosage of Polyaluminum Chloride （PAC） is 150mg/L and the dosage of Polyacrylamide （PAM） is 3mg/L ，the highest removal rate of emulsified oil can reach 88.3% .With the extension of HRT from 4h to12h， the removal rate of emulsified oil increases from 70.2% to 88.7% ，and the removal rates of Chemical Oxygen Demand （COD） and Suspended Substance （SS） also significantly improve. This process can stabilize the pH value of wastewater，reduce the ammonia nitrogencontent，and provide effective technicalreferenceforthetreatmentof degreasing wastewaterofaluminumprofiles.

Keywords： Membrane Bio-Reactor （MBR）; degreasing wastewater of aluminum profiles; emulsified oil separation

铝型材生产过程产生的脱脂废水富含乳化油，成分复杂，处理难度较大[。（剩余3745字）