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
Application Study of Biochemical+Fenton Oxidation+Qzone Catalytic Oxidation+Biological Activated Carbon Combined Process in the Treatment of Medical and Chemical Wastewater
贾中原1
作者信息
- 1. 浙江省环境工程有限公司,浙江 杭州 310012
- 折叠
摘要
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.
Abstract
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.
关键词
医化废水/生化/芬顿氧化/臭氧催化氧化/生物活性炭Key words
medical and chemical wastewater/biochemical/Fenton oxidation/ozone catalytic oxidation/biological activated carbon引用本文复制引用
出版年
2024
NETL
NSTL
万方数据