西安市护城河区域合流制排水管网改造方案分析

Analysis on Combined Drainage System Reconstruction in Xi'an Moat and Surrounding Area

西安市老城区的排水系统以雨污合流体制为主,设施设计标准偏低。近几年因城市雨水环境的变化,西安老城区排水系统的弊端日益凸显,已对护城河的水环境造成了一定的影响。结合对护城河汇水区域范围内的现状管网调查分析,选取护城河东西南北四个水质采样点分析检测了护城河水质,提出了护城河汇水区域范围内合流制管网改造方案,对国内其他类似城市旧城区合流制排水管网改造具有借鉴意义。

The drainage system in old city of Xi＇ an is mainly composed of rainwater and sewage collecting system. The design standard of the facilities is relatively low. In recent years, due to the variation of urban have become rainwater environment, the drawbacks of the combined drainage system in old city of Xi＇ an increasingly on investigation of prominent, which has affected the water environment of moat seriously. Based drainage system＇ s current situation of moat and its surrounding area, the authors selected four water samples test the moat＇ s water quality, and put forward the renovation schemes of combined drainage in moat and its surrounding area of Xi＇ an. This research could provide references for central＇ s drainage system reconstruction in other cities in China.