五段Bardenpho/反硝化深床滤池/臭氧氧化处理工业园废水

Application of Five-stage Bardenpho/Denitrification Deep Bed Filter/Ozone Oxidation Process in Industrial Park Wastewater Treatment Project

针对宜宾市王场工业园废水生化性较差、氨氮和SS含量较高、有机物难以降解的特点,采用水解酸化/五段Bardenpho/高效沉淀池/反硝化深床滤池/臭氧催化氧化工艺处理园区废水,该组合工艺结构紧凑、布置集约化、耐冲击负荷。水解酸化提高了废水可生化性,保证了后续二级处理和深度处理效果,高效沉淀池/反硝化深床滤池去除SS、深度脱氮和除磷效果十分理想。一期设计规模为5000 m^3/d,工程出水水质优于《四川省岷江、沱江流域水污染物排放标准》(DB 51/2311—2016)以及《城镇污水处理厂污染物排放标准》(GB 18918—2002)一级A标准要求。本工程直接运行成本为0.94元/m^3。

According to the wastewater characteristics of poor biochemical property,high content of ammonia nitrogen,SS and difficult degradation of organic matter,the treatment process of hydrolysis acidification/five-stage Bardenpho/high efficiency sedimentation/denitrification deep bed filter/ozone catalytic oxidation was used as the main process to treat the wastewater of Wangchang industrial park in Yibin.The combination process had advantages of compact structure,intensive arrangement and strong impact load resistance.The biodegradability of wastewater was improved by hydrolysis acidification to ensure the subsequent secondary treatment and advanced treatment effect.The high efficiency sedimentation tank/denitrification deep bed filter had perfect performance for SS removal,deep denitrification and dephosphorization.The first stage design scale was 5000 m^3/d,the effluent quality of the project was better than the standard of Discharge Standard of Water Pollutants in Minjiang and Tuojiang River Basins of Sichuan Province(DB 51/2311-2016)and first level A standard of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant(GB 18918-2002).The direct operation cost of the project was 0.94 yuan/m^3.