鉴于历史原因,许多城镇旧城排水系统大部分采用完全合流制,城镇道路普遍狭窄,无法实现完全分流制的改造,因此,城镇污水管网改造项目可考虑采用截流式合流制的排水体制,那坡县污水处理厂一期配套管网工程沿涝水河、城厢河河床两侧布置截流式合流制排水干管,从投资、拆迁、施工、管理等方面进行方案对比和优化设计,最终提出一个较优的方案。 Due to historical reasons, most of the old urban drainage systems in many cities and towns use a complete confluence system and the urban roads are generally narrow and can not be completely diverted. Therefore, the drainage system of the urban sewer network can be considered for the closure system Pao County Sewage Treatment Plant Phase I supporting pipe network along the river waterlogging, riverbanks on both sides of the layout of the closure of the river closure drainage system, from the investment, demolition, construction, management and other aspects of program comparison and optimization of the design, the final proposed a Better solution.