煤化工废水深度处理及回用工程实例
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摘要
采用曝气生物滤池(BAF)+微涡流高效沉淀+流砂过滤器+超滤+反渗透工艺用于煤化工废水深度处理及回用。实际运行结果表明,进水电导率在1.8~3.5 m S/cm时,RO产水电导平均为65μS/cm,脱盐率在96%以上,所有指标满足中石油《炼油化工企业污水回用管理导则》优质再生水的相关标准。RO浓水采用异相催化氧化+高效生化工艺,出水COD≤50 mg/L,NH_3-N、SS的质量浓度分别≤12、≤30 mg/L,满足DB 61/224-2011一级标准,达标排放。直接运行费用合计1.83元/m~3。
Biological aerated filter(BAF)+micro vortex high efficiency precipitation+flow sand filter+ultrafiltration+reverse osmosis process was used for advanced treatment and reuse of coal chemical wastewater.The operation results showed that,when the influent conductivity was 1.8~3.5 m S/cm,the RO effluent average conductance was 65μS/cm,the desalting rate could reach above 96%,and all the indicators met the relevant standards of highquality recycled water of CNOOC's'oil refining and chemical enterprises sewage recycling management guidelines'.The RO concentrated water was treated by heterogeneous catalytic oxidation and high efficiency biochemical process,the effluent COD was below 50 mg/L,and the mass concentration of NH_3-N and SS was below 12 mg/L and 30 mg/L respectively,which met the first level standard of DB 61/224-2011 and discharge up to the standard.The total cost of direct operation was 1.83 yuan/m~3.
Biological aerated filter(BAF)+micro vortex high efficiency precipitation+flow sand filter+ultrafiltration+reverse osmosis process was used for advanced treatment and reuse of coal chemical wastewater.The operation results showed that,when the influent conductivity was 1.8~3.5 m S/cm,the RO effluent average conductance was 65μS/cm,the desalting rate could reach above 96%,and all the indicators met the relevant standards of highquality recycled water of CNOOC's'oil refining and chemical enterprises sewage recycling management guidelines'.The RO concentrated water was treated by heterogeneous catalytic oxidation and high efficiency biochemical process,the effluent COD was below 50 mg/L,and the mass concentration of NH_3-N and SS was below 12 mg/L and 30 mg/L respectively,which met the first level standard of DB 61/224-2011 and discharge up to the standard.The total cost of direct operation was 1.83 yuan/m~3.
引文
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[2]中国石油与炼油与化工公司.化工企业污水回用管理导则[Z].2008.
[3]黄河流域(陕西段)污水综合排放标准:DB 61/224-2011[S].
[4]欧阳丽,王晓明.钢铁厂综合废水处理回用工程设计[J].中国给水排水,2008,24(20):73-76.
[5]周明英.流砂过滤器在石化废水深度处理中的应用[J].石油化工安全环保技术,2016,32(6):62-64.
[6]朱佳裔,沈吉敏,陈忠林,等.Fe OOH/H2O2体系去除水中对氯硝基苯[J].化工学报,2012,63(1):272-278.