依山而建的分阶梯节能型水厂设计实例

A Case Project of Step Topography Energy-saving Drinking Water Plant at the Edge of a Mountain

针对依山而建的水厂,结合高落差地形与分期规模建设,采用组团化分阶梯建设方式,免建中间提升泵房和吸水井,利用清水池余压经母管直接增压供水,叠合出集约化排泥水综合构筑物,合理统一或划分构筑物近远期规模,发挥出近期投资的经济效益。该工程免建深度处理的中间提升,节省土建、设备投资约450万元,同时每年可节省运行电耗62.5×10~4k W·h;清水池直接经母管连至供水泵房,最大可利用水头为8 m,每年可节电38.5×10~4k W·h。实际运行表明,系统处理效果良好,出厂水水质优于国家标准,达到了系统运行稳定可靠和节能减排的双重目标。

Optimized design of a stage-scale constructed drinking water plant was introduced with high fall at the edge of a mountain. The method of grouping step construction was adopted, boosting pum- ping station and inlet well were avoided. The application of residual pressure of clear water pool directly increased the water supply through the parent pipe. Thus, the comprehensive structure of intensive sludge and water discharge was superimposed. The short-term and long-term scale of the structure were reasona- bly unified or divided. As a result, the economic benefits of the short-term investment could be exerted. The intermediate lifting facilities of advanced treatment were avoided in this project, which contributed the reduction of investments for construction and equipment by 4.5 million yuan. And meanwhile, the operating costs were saved by 62.5 x 10^4kW·h per year. Through the direct connection of the clear wa- ter tank to the water supply pump room via the master pipe, the maximum available water head could reach 8 m. As a result, the annual power saved was 38.5 x 10^4kW·h. The results showed that the treatment effect of the process was excellent. The ards for emission Drinking Water Quality. It has achieved reduction quality of finished water was more favorable than Stand- the double goals of stable operation, energy saving and