CAOMeng,CHENHai.Application of EBIS Process in Reconstruction of Underground Sewage Treatment Plant[J].China Water & Wastewater,2023,39(24):82-86.
Application of EBIS Process in Reconstruction of Underground Sewage Treatment Plant
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第24期
Page:
82-86
Column:
Date of publication:
2023-12-17
- Keywords:
- energy biochemical intelligent control system (EBIS); underground sewage treatment plant; magnetic coagulation; BF-A/O shaking bed
- Abstract:
- The treatment scale of an underground sewage treatment plant in Dalian is 8 000 m3/d. The original key process is BF-A/O shaking bed, and the effluent quality is required to meet the first level A limit specified in the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002). The original BF-A/O process lacks anaerobic section and chemical phosphorus removal measures, and the residence times of anoxic and aerobic tanks are far less than the designed values, resulting in the total phosphorus and total nitrogen exceeding the discharge standard. The space of the reconstruction project is limited, and the construction needs to be completed in a short period without suspending production. The original regulating tank, BF-A/O shaking bed and disinfection tank were transformed into the energy biochemical intelligent control system (EBIS) process, and the original clear water reservoir was transformed into a magnetic coagulation system to improve the chemical phosphorus removal. The project was carried out in different groups and stages, and the original civil structures were highly utilized, which greatly shortened the transformation period without suspending production. The trial operational results showed that the effluent quality met the first level A limit after being treated by the EBIS-magnetic coagulation system. The actual total investment of the project is 38.039 million yuan, and the direct operating cost is increased by 0.40 yuan/m3.
Last Update:
2023-12-17