CHENHao-lin,SHIDa-lin,ANDong,et al.Analysis of the Operation Comparison between Multi-stage A/O Process and MBR Process in North China[J].China Water & Wastewater,2024,40(18):22-28.
Analysis of the Operation Comparison between Multi-stage A/O Process and MBR Process in North China
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第40卷
Number:
第18期
Page:
22-28
Column:
Date of publication:
2024-09-17
- Keywords:
- multi-stage A/O process; MBR process; energy consumption; cost
- Abstract:
- The comparison and selection of sewage treatment processes is very important to the efficiency and operating cost of sewage treatment. As one of the activated sludge processes, the step-feed multi-stage A/O process has the advantages of efficient nitrogen removal and cost saving. The MBR process also has the advantages of high treatment efficiency and land saving, but its disadvantage of high energy consumption is more prominent. This paper analyzes the treated water quantity, water quality, energy consumption and cost of two water plants in the same area of a city in the North China, so as sto provide reference for regional sewage treatment quality and payment supervision, and process selection of the new WWTP. The comparative analysis shows that the step-feed multi-stage A/O process only needs to add the external carbon source under the condition of influent TN impact. Compared with MBR under the condition of annual water volume exceeding the design scale by 21.5%, the power consumption of multi?stage A/O process is saved by 0.1 kW·h/m3. In addition, the sodium hypochlorite consumption of MBR is increased, and the average single consumption is 35 mg/L higher than that of the multi-stage A/O process. Through calculation, the operating production cost of multi-stage A/O process is about 0.495 yuan/m3, and the operating production cost of MBR process is about 0.955 yuan/m3.
Last Update:
2024-09-17