LILe-zhuo,PANLiang.Upgrading and Retrofitting Project of a Water Purification Plant in Ordos[J].China Water & Wastewater,2022,38(4):93-97.
Upgrading and Retrofitting Project of a Water Purification Plant in Ordos
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第38卷
Number:
第4期
Page:
93-97
Column:
Date of publication:
2022-02-17
- Keywords:
- upgrading and retrofitting; anaerobic multi-level anoxic/oxic process; adsorption and regeneration of bio-coke; magnetic coagulation
- Abstract:
- A water purification plant in Ordos adopted the main process of modified oxidation ditch, flocculation sedimentation tank and V-type filter. The original effluent quality carried out the first level A criteria specified in the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002). In order to improve the effluent quality to level quasi-Ⅳ specified in the Environmental Quality Standard for Surface Water (GB 3838-2002), a technology route of existing treatment facilities modification and advanced treatment was proposed. The modified oxidation ditch was transformed into an anaerobic multi?level anoxic/oxic (AMAO) process. The flocculation sedimentation tank previously using mechanical flocculation and inclined tube precipitation process was changed into a magnetic coagulation sedimentation tank with the enhanced removal function of SS and TP. The process of absorption and regeneration of bio?coke is adopted in the advanced treatment section to remove refractory organic matter. The operation results of the water purification upgrading plant for eight months show that the effluent quality was stable and all the indexes met the discharge standards of upgrading and retrofitting design.
Last Update:
2022-02-17