HEJing-zhong,SUNJing,LIUYi,et al.Application of Multi-stage A/O-MBR Process in Emergency Treatment of Landfill Leachate[J].China Water & Wastewater,2024,40(6):79-86.
Application of Multi-stage A/O-MBR Process in Emergency Treatment of Landfill Leachate
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第40卷
Number:
第6期
Page:
79-86
Column:
Date of publication:
2024-03-17
- Keywords:
- landfill leachate; multi-stage A/O process; MBR process; emergency wastewater treatment; low carbon to nitrogen ratio; integrated equipment
- Abstract:
- Due to its small scale, the leachate treatment station in mountainous area of Yunnan Province has caused serious overflow of leachate, and it is urgent to build a new wastewater treatment system. The landfill leachate is characterized by high ammonia nitrogen and total nitrogen (TN) and low carbon to nitrogen ratio. In addition, the wastewater quantity and quality fluctuate greatly, and the organic contaminants are difficult to degrade, making it difficult for traditional treatment processes to meet the discharge standard. The project adopted a multi-stage A/O process, combined with flat MBR technology, and applied it to the modular design of integrated equipment, achieving the treatment of 500 m3/d of leachate overflow wastewater in the landfill. The average values of effluent COD, ammonia nitrogen, TN and TP were 47.8, 8.8, 37.9 and 0.57 mg/L respectively, which met the limits of table 2 specified in Standard for Pollution Control on the Landfill Site of Municipal Solid Waste (GB 16889-2008), and also met the requirements of small footprint area and short construction period of the project. The project provides a new idea for this type of emergency wastewater treatment.
Last Update:
2024-03-17