CONGXue-zhi,JIAOWen-hai,YANGHong-hong,et al.Application of Submerged Ultrafiltration in the Retrofit Project of a Short Process Waterworks[J].China Water & Wastewater,2023,39(10):111-114.
浸没式超滤在短流程净水厂改造工程中的应用
- Title:
- Application of Submerged Ultrafiltration in the Retrofit Project of a Short Process Waterworks
- Keywords:
- waterworks; short process; sand filter; submerged ultrafiltration
- 摘要:
- 济南市某水厂设计处理规模为5×104 m3/d，原采用微絮凝+砂滤+消毒短流程处理工艺，为适应原水水质变化，并满足《生活饮用水卫生标准》（GB 5749—2006），在充分利用原有设施的基础上，将砂滤池改造为浸没式超滤膜池，并新建高密度沉淀池及污泥处理设施，改造后处理规模达到7×104 m3/d。介绍了技术改造的设计思路和经验，并分析了改造前后净水效果。运行数据表明，调试运行投产以来，出水水质稳定优于《生活饮用水卫生标准》（GB 5749—2006），出厂水浊度、菌落总数等指标较改造前有较大提升，可为传统快滤池改造成浸没式超滤膜池提供技术借鉴。该改造工程投资约6 500万元，单位经营成本仅增加0.57元/m3。
- Abstract:
- A waterworks in Jinan City, with the treatment capacity of 5×104 m3/d, adopted traditional short process of micro-flocculation, sand filtration, and disinfection originally. In order to adapt to changes in raw water quality and meet water quality requirements specified in the Standards for Drinking Water Quality (GB 5749-2006), the waterworks was retrofitted technically based on full use of the existing facilities. The sand filter was transformed into submerged ultrafiltration membrane tank, and the Densadeg and sludge treatment facilities were also built, thus the treatment capacity reached 7×104 m3/d after reconstruction. The design idea and experience are introduced, and the water purification efficiency before and after the reconstruction are analyzed. The operation data show that since commissioning and production, the effluent quality is better than the requirements specified in the Standards for Drinking Water Quality (GB 5749-2006). The effluent turbidity, aerobic plate count and other indicators have been greatly improved compared with those before retrofit, which could provide technical reference to transform sand filter into submerged ultrafiltration membrane tank. The investment of the retrofit project is about 65 million yuan, and the unit operating cost is increased by only 0.57 yuan/m3.
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