LIJing,ZHAOWei-bing,YUANXi,et al.Application of UCT/High Density Sedimentation Tank/Active Sand Filter Combined Process in Wastewater Treatment Plant[J].China Water & Wastewater,2023,39(14):71-74.
Application of UCT/High Density Sedimentation Tank/Active Sand Filter Combined Process in Wastewater Treatment Plant
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第14期
Page:
71-74
Column:
Date of publication:
2023-07-17
- Keywords:
- UCT; high density sedimentation tank; active sand filter
- Abstract:
- The treatment scale of Baigou second wastewater treatment plant in Hebei Province is 3.5×104 m3/d, the raw water is municipal wastewater mixed with a small amount of industrial wastewater (ratio of 3∶1), and the effluent quality is required to meet the limit in the key control area specified in Discharge Standard of Water Pollutants for Daqing River Basin (DB 13/2795-2018). Through comparative analysis of the influent and effluent quality, COD, BOD5, TN and TP were determined as the key control indicators of this project. Due to the high requirement of nitrogen and phosphorus removal in this project, UCT was selected as the secondary biological treatment process. The performance of biological nitrogen and phosphorus removal was maximized and the dosage of chemical phosphorus removal agent in advanced treatment was reduced by adding carbon source to the anoxic tank and changing the reflux mode of traditional A2O. The mature technology of high density sedimentation tank was selected as the advanced treatment process to further remove COD and TP from wastewater. The operational results showed that all indicators were up to the discharge standard stably.
Last Update:
2023-07-17