XIAHai-xia,FANXin-yu,ZHANGQiang,et al.Application of AAAOA+MBR Process in Land Saving Design of Municipal Wastewater Treatment Plant[J].China Water & Wastewater,2025,41(22):45-50.
Application of AAAOA+MBR Process in Land Saving Design of Municipal Wastewater Treatment Plant
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第41卷
Number:
第22期
Page:
45-50
Column:
Date of publication:
2025-11-17
- Keywords:
- municipal wastewater treatment plant; land saving; AAAOA; MBR; air/water ratio
- Abstract:
- A municipal wastewater treatment plant (WWTP) located in Northwest China is currently operating at full capacity. Owing to spatial constraints, any expansion must be implemented within the existing site boundaries. Concurrently, the effluent quality requirements are being upgraded from the first level B limit to the first level A limit as stipulated in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002). A new treatment capacity of 8×104 m3/d for the biological tank combined with the advanced treatment unit was achieved, even under a low land use index of only 0.125 m2/(m3·d-1). To comply with land use constraints and effluent quality standards, the AAAOA+MBR process was selected as the core treatment technology, in alignment with the design principle of integrated and unified structures. Additionally, space-efficient measures were implemented, including increasing the effective water depth of the biological tank to 8.0 m and co-constructing auxiliary buildings and facilities, resulting in a 33.75% reduction in land occupation. After the WWTP put into operation, the effluent quality remained stable and was consistently superior to the design discharge standard. The actual air requirement of the biological tank was reduced by over 40%, while the power consumption of the aeration blower was decreased by no less than 18%, offering valuable reference for similar wastewater treatment projects.
Last Update:
2025-11-17