LIXu-feng,ZHOUYao,CHANGJing,et al.Enhanced Purification Process of a Waterworks in Tianjin by Pretreatment and Advanced Treatment Technology[J].China Water & Wastewater,2024,40(3):46-52.
Enhanced Purification Process of a Waterworks in Tianjin by Pretreatment and Advanced Treatment Technology
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第40卷
Number:
第3期
Page:
46-52
Column:
Date of publication:
2024-02-01
- Abstract:
- The water quality of Luanhe River fluctuates greatly in seasons, and the treatment performance is poor when there is only the conventional process consisting of coagulation, sedimentation, filtration and disinfection. The conventional process for the treatment of raw water from Luanhe River was enhanced by techniques such as pre-ozonation, advanced ozonation, activated carbon filtration and combined treatment of ozonation and activated carbon, and the ability of each process to control turbidity, CODMn, UV254 and other indicators was investigated. The post-ozonation enhanced process with ozone concentration of 1.0 mg/L could realize the CODMn in effluent less than 1.0 mg/L. The pre-ozonation enhanced process with ozone concentration of 1.0 mg/L should be selected when the CODMn in effluent was required to be less than 0.85 mg/L. However, the process demonstrated a weaker ability for UV254 control compared with post-ozonation. For turbidity control, the performance of activated carbon filtration was better than that of the two ozonation enhanced processes, and the turbidity of the effluent from the carbon filter was decreased to 0.12 NTU. The combined post-ozonation and activated carbon enhanced process with ozone concentration of 1.0 mg/L had the best effluent quality, and the turbidity, CODMn and UV254 were less than 0.10 NTU, 0.50 mg/L and 0.043 cm-1, respectively, indicating that the results could provide technical reference for the upgrading of drinking water plants.
Last Update:
2024-02-01