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):85-88.
MBBR工艺用于南昌市某污水处理厂提标改造工程
- Title:
- Application of MBBR Process in an Upgrading and Reconstruction Project of a Sewage Treatment Plant in Nanchang
- Keywords:
- upgrading and reconstruction; first level A standard; MBBR
- 摘要:
- 南昌市某污水处理厂处理规模为20×104 m3/d，采用卡鲁塞尔氧化沟工艺，出水水质执行《城镇污水处理厂污染物排放标准》（GB 18918—2002）一级B标准，需提标至一级A标准。为解决现状生物池缺氧区停留时间不足和好氧区硝化不彻底的问题，改造工程采用强化生物处理和增设深度处理工艺的措施，即氧化沟MBBR改造＋高效混凝沉淀＋回转式过滤＋次氯酸钠消毒提标改造工艺。实际运行表明，处理效果较好，出水水质稳定优于设计值。提标改造工程设计总投资2.08亿元，污水处理总成本及经营成本分别为0.651、0.497元/m3。
- 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.
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