PENG Jiang-xi,LI Yi-fei,XIAO Tao,et al.Application of MBBR Process in an Upgrading and Reconstruction Project of a Sewage Treatment Plant in Nanchang[J].China Water & Wastewater,2021,37(14 14):85-88.
Application of MBBR Process in an Upgrading and Reconstruction Project of a Sewage Treatment Plant in Nanchang
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
14 14
Page:
85-88
Column:
Date of publication:
2021-07-17
- Keywords:
- upgrading and reconstruction; first level A standard; MBBR
- Abstract:
- Treatment capacity of a sewage treatment plant in Nanchang is 20×104 m3/d, and the main process is Carrousel oxidation ditch. The original effluent quality needs to reach the national first level B discharge standard, and now it requires to upgrade to first level A limitation of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant（GB 18918-2002）. In order to solve the problem of short residence time in anoxic zone and incomplete nitrification in aerobic zone, measures of enhanced biological treatment and adding advanced treatment technology were adopted in the upgrading project, that was oxidation ditch modified by MBBR process, high efficiency coagulation sedimentation, rotary filtration and sodium hypochlorite disinfection. Actual operation showed the treatment performance was good, and the effluent quality was stable and better than the design value. The total investment of the upgrading project was about 208 million yuan, and the total unit cost and operational cost were 0.651 yuan/m3 and 0.497 yuan/m3, respectively.
Last Update:
2021-07-19