华北地区水源置换某地表水厂工程的设计浅析

Design Analysis of a Surface Water Plant Project for Water Source Replacement in North China

在地下水压采和水源置换的背景下,开展华北地区某地表水厂工程建设工作,探讨短流程、紧凑型水厂建设形式的设计要点。该地表水厂主要服务于周边的工业园区及居住区,设计规模为5.0×10^(4)m^(3)/d,自用水系数5%。净水厂出厂水水质符合《生活饮用水卫生标准》的要求,主体工艺采用机械混合絮凝—斜管沉淀池—浸没式超滤工艺,对设计水质下的工艺设计参数进行了分析探讨。本工程对水库水低温低浊、微污染等季节性水质变化均有很好的适用性,抗冲击负荷能力强,水质保障率高。

Under the background of underground water pressure extraction and water source replacement,the construction of a surface water plant project in North China is carried out,and the design points of a short process and compact water plant construction form are discussed.The surface water treatment plant mainly serves the surrounding industrial parks and residential areas,with a design scale of 5.0×10^(4)m^(3)/d,self use water coefficient of 5%.The water quality of the effluent from the water purification plant meets the requirements of the Sanitary Standards for Drinking Water,the main process adopts mechanical mixing flocculation inclined tube sedimentation tank immersion ultrafiltration process,and the process design parameters under the designed water quality are analyzed and discussed.This project has good applicability to seasonal water quality changes such as low temperature,low turbidity,and slight pollution in reservoir water,it has strong resistance to impact loads and a high water quality guarantee rate.