CHENGMing-tao,ZHANGWan-li.Application of Dissolved Air Flotation and Ozone Catalytic Oxidation Process in the Upgrading and Reconstruction of a WWTP in an Industrial Park[J].China Water & Wastewater,2023,39(24):134-139.
气浮+臭氧催化氧化用于工业园区污水厂提标改造
- Title:
- Application of Dissolved Air Flotation and Ozone Catalytic Oxidation Process in the Upgrading and Reconstruction of a WWTP in an Industrial Park
- Keywords:
- wastewater treatment plant in industrial park; upgrading and reconstruction; ozone catalytic oxidation; dissolved air flotation
- 摘要:
- 对苏南地区某保税区工业园污水厂按照《太湖地区城镇污水处理厂及重点工业行业主要水污染物排放限值》（DB 32/1072—2018）进行提标改造，设计规模为4.5×104 m3/d，面临着出水标准大幅提高、水质复杂、可选择工艺有限、用地紧张等难题。通过现状进、出水水质分析，结合验证性试验结果，对二沉池出水采用气浮+臭氧催化氧化进一步处理，出水水质稳定达到新标准。提标改造后工艺流程为粗格栅/进水泵房+细格栅/旋流沉砂池+匀质池+生化池+二沉池+高速气浮池+臭氧催化氧化池。该工程总投资为6 637.08万元，处理成本比原来增加0.552元/m3。
- Abstract:
- A WWTP in an industrial park with designed capacity of 4.5×104 m3/d in southern Jiangsu was upgraded and reconstructed according to Discharge Standard of Main Water Pollutants for Municipal Wastewater Treatment Plant & Key Industries of Taihu Area (DB 32/1072-2018). It was faced with the problems such as higher requirement of effluent quality, complicated influent quality, limited option of available sewage treatment process, lack of construction land. Dissolved air flotation and ozone catalytic ozonation are used to further treat the effluent of secondary sedimentation tank based on current water quality analysis and confirmatory test. The effluent quality reaches the new design standard stably. After the transformation, the new process consists of coarse grid and inlet pump house, fine grid and cyclone settling tank, equalization tank, biochemical pond, secondary sedimentation tank, high speed flotation tank, ozone catalytic oxidation pond. The total investment of the project is 66.370 8 million yuan, and the total treatment cost is increased by 0.552 yuan/m3.
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