首页|生化+芬顿氧化+臭氧催化氧化+生物活性炭组合工艺在医化废水处理中的应用研究

生化+芬顿氧化+臭氧催化氧化+生物活性炭组合工艺在医化废水处理中的应用研究

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某医化园区各医化企业废水经企业内污水处理站处理达到纳管标准(COD浓度不超过 500 mg/L)后排入下游污水处理厂.目前各企业排水CODCr浓度在 200~450 mg/L之间,废水的BOD5/CODCr只有 0.1 左右,可生化性较差,容易对下游污水处理厂造成影响.目的:在医化废水进入下游污水处理厂前,使医化废水CODCr达标.方法:采用生化+芬顿氧化+臭氧催化氧化+生物活性炭组合工艺对医化废水进行中试研究.中试进水CODCr浓度在 206~284 mg/L之间,中试规模为 0.5 m3/h.分别考察生化、芬顿氧化、臭氧催化氧化和生物活性炭工艺对CODCr的处理效果和组合工艺的整体效果.结果:生化、芬顿氧化、臭氧催化氧化和生物活性炭工艺对CODCr的平均去除率分别为 35%、47%、23%、34%,组合工艺的去除率为 83%,出水CODCr浓度为 36~47 mg/L,满足《城镇污水处理厂污染物排放标准》(GB 18918-2002)中一级A标准.结论:该组合工艺具有较好的耐负荷冲击能力,适于医化废水的处理.
Application Study of Biochemical+Fenton Oxidation+Qzone Catalytic Oxidation+Biological Activated Carbon Combined Process in the Treatment of Medical and Chemical Wastewater
The wastewater from various medical chemical enterprises in a medical and chemical park is treated by the internal sewage treatment station in the enterprise to reach the management standard(the concentration of COD is not more than 500 mg/L),and then discharged into the downstream sewage treatment plant.At present,the concentration of CODCr in the drainage of each enterprise is between 200 and 450 mg/L,and the BOD5/CODCr of the wastewater is only about 0.1,which is poor in biodegradability and easy to affect the downstream sewage treatment plant.Objective:To make the medical and chemical wastewater reach the CODCr standard before it inters downstream sewage treatment plants.Methods:A pilot study was conducted on the treatment of medical and chemical wastewater using a combined process of biochemical+Fenton oxidation+ozone catalytic oxidation+biological activated carbon.The concentration of CODCr of the pilot influent was 206~284 mg/L,and the pilot scale was 0.5 m3/h.The treatment effect of biochemical,Fenton oxidation,ozone catalytic oxidation and biological activated carbon on CODCr and the overall effect of the combined process were investigated respectively.Results:The average removal rates of CODCr by biochemical,Fenton oxidation,ozone catalytic oxidation and biological activated carbon processes were 35%,47%,23%and 34%,respectively,and the removal rates of combined processes were 83%.The effluent CODCr concentration was 36~47 mg/L,meeting the first-level A standard in the"Discharge Standards of Pollutant for Municipal Wastewater Treatment Plant"(GB 18918-2002).Conclusion:This combination process has good resistance to load impact and is suitable for the treatment of medical and chemical wastewater.

medical and chemical wastewaterbiochemicalFenton oxidationozone catalytic oxidationbiological activated carbon

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浙江省环境工程有限公司,浙江 杭州 310012

医化废水 生化 芬顿氧化 臭氧催化氧化 生物活性炭

2024

浙江化工
浙江省化工研究院有限公司

浙江化工

影响因子:0.131
ISSN:1006-4184
年,卷(期):2024.55(5)