摘要
凤阳县自来水厂原规模为3. 5×10~4m^3/d,扩建工程规模为2. 5×10~4m^3/d,均采用絮凝、沉淀、过滤、消毒常规处理工艺。改扩建工程在原水水库放水涵洞内衬钢管,将原在水库坝下明渠内取水方式改为在水库内直接取水,最大限度利用了水库水头,节能效果显著,节约运行成本。设计在配水堰上设置可调节堰板,絮凝池与沉淀池之间过渡区内设置冲洗装置,平流沉淀池内设置底坎、滑泥坡,同时优化沉淀池与滤池之间的连接方式等。工程建成后,水厂运行稳定,延长了平流沉淀池清淤周期,减少了人工工作强度,出水水质优于《生活饮用水卫生标准》(GB 5749—2006)。
The original treatment capacity and expansion treatment capacity of Fengyang Waterworks was respectively 3.5×10^4m^3/d and 2.5×10^4m^3/d.The conventional treatment process of floc- culation,precipitation,filtration and disinfection was adopted in the both projects.The reconstruction and expansion project was lined with steel pipes in the original reservoir discharge culvert.The water intaking method was changed from taking water in the open canal under the dam of the reservoir to directly taking water in the reservoir,and the reservoir head could be utilized to the maximum extent.The energy saving effect was remarkable and the operation cost was saved significantly.The design was provided with an adjustable weir plate that was designedon the water distribution weir,a flushing device that was set up in the transition zone between the flocculation tank and the sedimentation tank,a bottom ridge and a mud slip slope that was set in horizontal flow sedimentation tank,"and the connection mode between the sedimentation tank and the filter tank was optimized.After the completion of the project,the performance of the waterworks was stable.The dredging cycle of the horizontal flow sedimentation tank was prolonged, and the labor intensity was reduced.The discharge water quality was superior to the Standards for Drinking Water Quality(GB 5749-2006).
作者
夏绍凤
高文乔
王矛矛
成国保
XIA Shao-feng;GAO Wen-qiao;WANG Mao-mao;CHENG Guo-bao(Hefei Municipal Design &Research Institute Co.Ltd.,Hefei 230001,China)
出处
《中国给水排水》
CAS
CSCD
北大核心
2018年第24期47-50,55,共5页
China Water & Wastewater
关键词
水厂
过渡区
平流沉淀池
底坎
滑泥坡
可调节堰板
waterworks
transition zone
horizontal flow sedimentation tank
bottom ridge
slip slope
adjustable weir
