Application of MBR in Caotan Wastewater Treatment Plant in Xi’an Economic Development District
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第36卷
Number:
8 8
Page:
63-68
Column:
Date of publication:
2020-04-17
- Keywords:
-
wastewater treatment plant
; MBR; A2O process; precise aeration technology;
- Abstract:
-
The design treatment capacity of Caotan wastewater treatment plant in Xi ’an economic development district was 20×104 m3/d. The effluent quality was required to meet the first class level A standard of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant（GB 18918-2002). One part of the effluent was discharged into Weihe River, the other part was put into the reused network. The planned land for this project was only about 10 hm2, while the reused water and effluent standards were relatively high. Therefore, MBR process was finally adopted as the main treatment unit. The treatment process was pretreatment unit+A2O+MBR+contact disinfection tank. The land coverage for every ton of water treated was about 0.399 m2/m3, and the average power consumption was about 0.37 kW·h/m3. The operation practice showed that the effluent quality was superior to the design standard. The effective combination of MBR process and AVS precise aeration technology solved the problems of land shortage, high effluent quality standard, resistance to the impact of high load raw water quality and quantity, and reduction of the overall operation cost of MBR process.
Last Update:
2020-04-17