YANGLei-san,LIJun-fei,LIDe-qiang,et al.Design of Phase-Ⅱ Expansion Project for Sewage and Initial Rainwater Treatment in a Wastewater Treatment Plant in Guangdong[J].China Water & Wastewater,2022,38(24):47-52.
广东某污水厂二期扩建污水和初期雨水处理工程设计
- Title:
- Design of Phase-Ⅱ Expansion Project for Sewage and Initial Rainwater Treatment in a Wastewater Treatment Plant in Guangdong
- 摘要:
- 广东某污水处理厂二期扩建工程污水处理规模为15×104 m3/d，初期雨水处理规模35×104 m3/d。综合考虑占地面积小、投资省、运行稳定等因素，污水处理采用改良A2/O主体工艺，深度处理采用V型滤池，消毒采用次氯酸钠消毒；污泥处理采用低温热干化工艺；初期雨水处理采用高效沉淀池工艺。污水设计出水水质执行《城镇污水处理厂污染物排放标准》（GB 18918—2002）一级A标准和广东省地方标准《水污染物排放限值》（DB 44/26 —2001）一级标准的较严值，初期雨水设计出水水质执行《城镇污水处理厂污染物排放标准》（GB 18918—2002）中的三级标准。实际运行表明，出水水质完全达到设计标准。
- Abstract:
- The treatment scale of a wastewater treatment plant phase-Ⅱ expansion project in Guangdong is 15×104 m3/d, and the initial rainwater treatment scale is 35×104 m3/d. Considering the factors such as small footprint, low investment and operation stability, the modified A2/O process was selected as the main wastewater treatment process, while the advanced treatment process and disinfection were V-type filter and sodium hypochlorite disinfection, respectively. The sludge disposal process was low temperature thermal drying. The initial rainwater was treated by high-efficiency sedimentation tank. The design effluent quality of the wastewater is required to meet the stricter of the first level A criteria specified in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002) and first level criteria specified in a local standard of Guangdong Province Discharge Limits of Water Pollutants (DB 44/26-2001), while the design effluent quality of the initial rainwater is required to meet the third level criteria specified in Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB 18918-2002). Actual operation shows that the effluent qualities reach the design standards completely.
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