HUANG Liang-bo,HUANG Shi-liu,CAO Gui-hua,et al.Design of ABR-AO Biochemical Sedimentation Integrative Wastewater Treatment Process[J].China Water & Wastewater,2022,38(No.2):54-58.
Design of ABR-AO Biochemical Sedimentation Integrative Wastewater Treatment Process
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第38卷
Number:
No.第2
Page:
54-58
Column:
Date of publication:
2022-01-17
- Keywords:
- low C/N ratio; ABR-AO integrative process; nitrogen and phosphorus removal; staged aeration
- Abstract:
- The expansion scale of a water purification plant in Sanya is 4.0×104 m3/d, and the process is integrative ABR-AO biochemical sedimentation. The process is characterized by staged aeration (O1-O5 tanks), V-shaped structure of the secondary settling tank and single inclined wall structure of the inclined tube sedimentation tank. It can not only save civil construction and footprint area, but also significantly improve the MLSS of the biochemical system and reduce the sludge load. In addition, it has prominent nitrogen and phosphorus removal performance, and a lower amount of carbon source for anoxic nitrogen removal. After 37 days of trial operation, average COD, NH3-N, TN, TP in the effluent of integrative tank were 12.0， 0.31， 10.54, 0.37 mg/L, respectively, which was superior to the first level A criteria specified in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002). The process creates an appropriate condition for effluent of the subsequent deep bed denitrification filter to steadily meet the quasi?Ⅳ surface water standard, and provides a reference for low?cost nitrogen and phosphorus removal of low C/N ratio wastewater.
Last Update:
2022-01-17