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.
Application of Dissolved Air Flotation and Ozone Catalytic Oxidation Process in the Upgrading and Reconstruction of a WWTP in an Industrial Park
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第24期
Page:
134-139
Column:
Date of publication:
2023-12-17
- Keywords:
- wastewater treatment plant in industrial park; upgrading and reconstruction; ozone catalytic oxidation; dissolved air flotation
- 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.
Last Update:
2023-12-17