RENCheng,MAOYun-fei,ZHOUKe-fan,et al.Stable Operation of AAO+MBR System with Low Consumption[J].China Water & Wastewater,2023,39(5):67-73.
Stable Operation of AAO+MBR System with Low Consumption
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第5期
Page:
67-73
Column:
Date of publication:
2023-03-01
- Keywords:
- AAO+MBR process; improvement of water quality; operation optimization; energy saving and consumption reduction
- Abstract:
- The original phase Ⅰ project of F municipal wastewater treatment plant in Ningbo adopted AO process, and the effluent quality was required to meet the first level B criteria specified in the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002). To improve the effluent quality and increase the discharge standard to surface water Class Ⅳ standard, the plant was upgraded by dismantling the original phase Ⅰ process and constructing a new AAO+MBR treatment process. The measures for solving the problems were explored such as high power consumption, low TN removal rate and high carbon source dosage in MBR commissioning. After upgrading and optimizing the operation, the power consumption was reduced by 6.6%, and the dosages of carbon source and PAC were reduced by 28.7% and 3.8%, respectively. In addition, the effluent TN decreased from 16.4 mg/L to 9.3 mg/L, the effluent TP decreased from 0.61 mg/L to 0.21 mg/L, and the effluent COD decreased from 19.69 mg/L to 15.55 mg/L.
Last Update:
2023-03-01