YUZhong-qing,ZHAOLe-hu,ZHANGJun-jie,et al.Application of Ozonation Coupled UV/H2O2 Process in Upgrading and Expansion of a Wastewater Treatment Plant[J].China Water & Wastewater,2023,39(6):60-65.
Application of Ozonation Coupled UV/H2O2 Process in Upgrading and Expansion of a Wastewater Treatment Plant
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第6期
Page:
60-65
Column:
Date of publication:
2023-03-17
- Keywords:
- quasi class Ⅳ standard; coagulation sedimentation; denitrification deep bed filter; ozonation coupled UV/H2O2; upgrading and reconstruction
- Abstract:
- The current scale of a wastewater treatment plant in Anhui is 6.0×104 m3/d, and the construction scale of phase Ⅰ and phase Ⅱ projects are both 3.0×104 m3/d. The secondary biochemical processes are “anaerobic tank and Orbal oxidation ditch” and A2/O process, respectively. The effluent from biochemical treatment of phase Ⅰ and phase Ⅱ projects is merged into the advanced treatment process consisting of mixed flocculation tertiary sedimentation tank and V-type filter, and the effluent is required to meet the first level A discharge standard. The scale of the expansion project is expanded by 3.0×104 m3/d, and the effluent COD, ammonia nitrogen and total phosphorus are required to meet the class Ⅳ criteria specified in Environmental Quality Standards for Surface Water (GB 3838-2002), and other indicators shall meet the first level A discharge standard. The secondary biochemical treatment of the expansion project is A2/O process, and the advanced treatment consists of mixed flocculation tertiary sedimentation tank, denitrification deep bed filter and ozonation coupled UV/H2O2. The effluent from the V-type filters in phase Ⅰ and phase Ⅱ projects is also treated by the ozonation coupled UV/H2O2 process. As the wastewater treatment plant also receives the effluent from two industrial park wastewater treatment plants upstream, ozonation coupled UV/H2O2 process is thus adopted for treating the refractory compounds. In addition, ozonation also has the function of disinfection, which saves investment and footprint area. The actual operational results show that the effluent quality meets the design standard.
Last Update:
2023-03-17