WANGHong-gang,JIHai-xia,CHENGShu-hui.Design of a Wastewater Treatment Plant Upgrading and Expansion Project in Harbin[J].China Water & Wastewater,2024,40(10):64-68.
Design of a Wastewater Treatment Plant Upgrading and Expansion Project in Harbin
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第40卷
Number:
第10期
Page:
64-68
Column:
Date of publication:
2024-05-17
- Keywords:
- upgrading and expansion; wastewater treatment plant; CASS process; MBBR process; magnetic coagulation clarifier
- Abstract:
- The current design scale of a wastewater treatment plant in Harbin is 15×104 m3/d, and the effluent is required to comply with the first level B limit specified in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002). The upgrading and expansion project expanded the total scale of the wastewater treatment plant to 25×104 m3/d at the original site, and the effluent quality was upgraded to the first level A limit specified in the discharge standard. The CASS reactor was transformed into CASS-MBBR process, its functional areas were redivided, and the internal reflux was added. The expansion project consisted of multi-stage A2O-MBBR and rectangular secondary sedimentation tank with wastewater peripheral in and peripheral out, and the advanced treatment process was magnetic coagulation clarifier and ultraviolet disinfection. The effluent quality stably met the discharge standard, and the “not in my backyard” issue was effectively resolved through deodorization measures, noise control, sludge treatment and architecture and landscape design. The results aim to provide reference for similar projects.
Last Update:
2024-05-17