老旧自来水厂絮凝沉淀池技术改造实践  

Technical Transformation Practice of Flocculation Sedimentation Tank in an AgingWaterworks

作　　者：曾正仁 孙政 白华清 贺阳 赵亚芳 ZENG Zheng-ren;SUN Zheng;BAI Hua-qing;HE Yang;ZHAO Ya-fang(Southwest Municipal Engineering Design&Research Institute of China,Chengdu 610081,China)

机构地区：[1]中国市政工程西南设计研究总院有限公司,四川成都610081

出　　处：《中国给水排水》2024年第4期89-92,共4页China Water & Wastewater

摘　　要：某自来水厂一期工程设计规模9×10^(4)m^(3)/d,建于1995年,采用平流沉淀池工艺,2010年改造为平流斜管复合沉淀池。由于絮凝效果差、斜管沉淀区底部排泥不彻底“、跑矾”等原因导致实际产水量仅为7×10^(4)m^(3)/d,亟需进行优化改造,以提高产水量。采取延长絮凝时间、将机械+网格絮凝改为网格絮凝并优化布置、用桁架式吸泥机替代穿孔管排泥、增加配水区高度等技术改造措施后,产水量提高至10.5×10^(4)m^(3)/d。The first phase of a waterworks with design capacity of 9×10^(4) m^(3)/d,using horizontal sedimentation tank technology,was built in 1995,and transformed into horizontal inclined tube composite sedimentation tank in 2010.Due to the poor flocculation effect,incomplete sludge discharge at the bottom of the inclined tube sedimentation zone,and alum runout,the actual water production yield is only 7×10^(4) m^(3)/d,so that it is urgent to optimize and transform to improve the water yield.By extending the flocculation time,changing mechanical and grid flocculation to grid flocculation and optimizing the layout,trussed sludge scraper instead of perforated pipe for sludge discharge,and increasing the height of the water distribution area,etc.,the water yield was increased to 10.5×10^(4) m^(3)/d.

关 键 词：自来水厂 复合沉淀池 絮凝沉淀池 网格絮凝 桁架式刮泥机 矾花 

分 类 号：TU991[建筑科学—市政工程]