阆中古城及老城区雨污分流改造方案探讨

Discussion on Reconstruction Scheme of Rainwater & Sewage Diversion in Langzhong Ancient City & Old Urban Area

随着经济的发展,阆中古城及老城区现有合流制排水管网明显落后,对环境造成较大影响,需要进行雨污分流改造。由于前期未实施统一规划,老城区排水管道布局较为混乱,古城片区街道狭窄、房屋密集,排水形式多采用暗沟。文章针对古城及老城区排水现状条件,从技术和经济角度分析雨污分流改造方案。老城区计划进行彻底的雨污分流制改造,古城内计划采用截流式合流制,并对溢流污水进行预处理。通过实施雨污分流,使雨水、污水各行其道,雨水排入嘉陵江,污水排入下游污水处理厂,可基本杜绝未经处理的污水进入水体,对水环境造成污染。通过方案探讨,可为类似的老城区雨污分流改造项目提供一些参考。

With the development of economy,the existing combined drainage network in Langzhong ancient city and the old urban area is obviously backward,which has a great impact on the environment,so it is necessary to carry out rainwater and sewage diversion reconstruction.Due to the lack of unified planning in the early stage,the layout of drainage pipelines in the old urban area is relatively chaotic.The streets in the ancient city area are narrow and houses are dense,and the drainage forms are mostly underground ditches.According to the current drainage conditions in the ancient city and the old urban area,the reconstruction scheme of rainwater and sewage diversion is analyzed from the perspective of technology and economy.The old urban area plans to carry out a thorough transformation of the rainwater and sewage diversion system,and the old city plans to adopt the intercepting combined system,and pretreat the overflow sewage.By separating rainwater and sewage,rainwater and sewage will go their own way.Rainwater will be discharged into the Jialing River and sewage will be discharged into the downstream sewage treatment plant,which can basically prevent untreated sewage from entering the water body and causing pollution to the water environment.Through the scheme discussion,it can provide some reference for similar rainwater and sewage diversion reconstruction projects in old urban areas.