大型水厂改造的集约化设计理念与应用

Design Concept and Application of Integrated Upgrading and Reconstruction of Large Water Treatment Plant

城市供水系统的建设相对于其经济发展水平存在滞后性,水量及水质要求日益增长,提升城市供水基础设施水平成为必然选择。城市化的快速发展,一方面让郊区变成中心城区,另一方面也极大限制了水厂改扩建的潜力。以城市中心城区某大型水厂原址改扩建为案例,基于集约化设计理念和维持生产要求:一方面通过采用高效池型、叠建组合式设计以及优化单体设计来最大化土地利用率;另一方面通过分步施工方案实现边生产边改造,并维持一定制水规模的目标。改扩建将使水厂吨水用地指标从0.127 (m^2·d)/m^3降至0.094 (m^2·d)/m^3,该案例具备中心城区老水厂改造的几种典型约束条件,对于类似工程,其设计理念具有一定借鉴意义。

Water supply system of city often lags behind its economic development level,but the increasing demand of quantity and quality of water will make it an inevitable choice to improve the level of urban water supply infrastructure.Rapid development of urbanization on the one hand makes suburbs become the downtown city,but on the other hand,it also greatly limits the potential of water plant reconstruction and expansion.Taking the reconstruction and expansion of the original site of a large-scale water plant in city center as an example,based on the concept of integrated design and the requirements of maintaining production.On the one hand,land utilization is maximized through the adoption of high-efficiency pools,stacking and combination design,optimization of single-unit design.On the other hand,the goal of reconstructing while producing and maintaining a certain scale of water production is achieved through step-by-step construction scheme.Reconstruction and expansion will reduce the land use index per ton of water from 0.127(m^2·d)/m^3 to 0.094(m^2·d)/m^3,the case has several typical constraints for the reconstruction of old water treatment plant in central urban area,which can be used for reference for similar projects.