WANG Zheng-fa,SHENTU Jun-jie,CAI Peng-xiang.Design of MBBR/DBDF Process for Quasi-Ⅳ Upgrading and Reconstruction of a Wastewater Treatment Plant in Zhejiang[J].China Water & Wastewater,2021,37(20):61-65.
浙江某污水厂准Ⅳ类提标改造MBBR+DBDF工艺设计
- Title:
- Design of MBBR/DBDF Process for Quasi-Ⅳ Upgrading and Reconstruction of a Wastewater Treatment Plant in Zhejiang
- 关键词:
- 提标改造; A/A/O+MBBR+DBDF工艺; 工程效果
- 摘要:
- 浙江某城市污水处理厂总规模8.0×104 m3/d，分三期建设，其中一、二期共4.0×104 m3/d，主体工艺为改良式SBR工艺，出水执行《城镇污水处理厂污染物排放标准》（GB 18918—2002）一级B标准。本次提标改造要求出水达到浙江省地方标准《城镇污水处理厂主要水污染物排放标准》（DB 33/2169—2018）。针对厂区可用土地少、改造时间短的特点，提标改造工程采用A/A/O+MBBR+DBDF（反硝化深床滤池）组合工艺。改造完成后，污水厂运行稳定，各项出水指标均达到设计标准。
- Abstract:
- The total scale of a municipal wastewater treatment plant in Zhejiang Province is 8.0 ×104 m3/d, which is divided into three phases, of which the first and the second phases are 4.0×104 m3/d. The main process is modified SBR process, and the effluent quality was required to meet the first level B criteria specified in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002). However, the discharge standard is required to upgrade to the local standard of Zhejiang Province Discharge Standard of Major Water Pollutants for Municipal Wastewater Treatment Plant （DB 33/2169-2018）. Owing to the limited footprint and short construction term, the combined process of A/A/O, MBBR and DBDF was finally adopted in the upgrading project. The wastewater treatment plant runs stably after the reconstruction, and all indexes in the effluent reach the design standards.
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