预曝气/AO/混凝沉淀处理金属镁一体化项目综合废水  

Combined Pre-aeration,Anaerobic-aerobic,Coagulation-sedimentation Process for Treatment of Integrated Magnesium Project Wastewater

作　　者：周勇 崔康平[1] 王开春 张彬彬 冯莹莹[1] 

机构地区：[1]合肥工业大学资源与环境工程学院,安徽合肥230009 [2]中蓝连海设计研究院,江苏连云港222004

出　　处：《中国给水排水》2017年第22期93-97,共5页China Water & Wastewater

摘　　要：采用预曝气/厌氧/好氧/混凝沉淀工艺处理金属镁一体化项目综合废水,设计总处理量为400 m^3/h,调试运行结果表明,该工艺运行稳定,耐冲击负荷能力强。当进水COD和氨氮浓度分别低于5 000 mg/L和400 mg/L时,对COD和氨氮的去除率分别达到95%和99%,且出水氨氮稳定在2 mg/L以下,出水COD达到《农田灌溉水质标准》(GB 5084—2005);氨氮、多环芳烃、苯并芘等浓度达到《炼焦化学工业污染物排放标准》(GB 16171—2012)中用于洗煤、熄焦及高炉冲渣的水质要求,最终出水水质满足察尔汗盐湖地区废水排放要求。The combined pre-aeration, anaerobic-aerobic, coagulation-sedimentation process wasused to treat the wastewater from an integrated magnesium project. The designed working capacity is 400m3/h. The trial running result showed that this process operated stably and was highly resilient to shockload. When the average influent concentrations of COD and NH3 - N were lower than 5 000 mg/L and400 mg/L respectively, the removal rates of COD and NH3 - N were 95% and 99% respectively. The ef-fluent NH3 - N concentration was lower than 2 mg/L stably. The effluent COD met the Standards for Irri-gation Water Quality （ GB 5084 - 2005 ） . The effluent NH3 - N concentration, PAHs, and Benzo （a）pyrene met the requirements for coal washing, coke quenching and blast furnace slag flushing accordingto the Discharge Standard of Pollutants for Coke Chemical Industry （GB 16171 -2012）. The final efflu-ent quality met the wastewater discharge standard in Chaerhan salt lake area.

关 键 词：金属镁一体化项目 综合废水 预曝气 厌氧 好氧 

分 类 号：X703[环境科学与工程—环境工程]