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现如今,我国的城市排水设施体制通常分为合流制和分流制,所谓合流和分流,指的是雨水和生活污水的排放渠道。在以往的城市规划建设中,都是使用雨水和污水合流的排放方式,通常合流后的污水被直接排入城市的河渠之中。在城市污水日益严重的今日,旧时的雨污水合流排放方式所造成的污染,显然已经不符合现代社会节能减排的要求。所以,提倡雨水、污水的分流方式是社会发展的新需求。
Nowadays, the system of urban drainage facilities in China is usually divided into the confluence system and the diversion system. The so-called confluence and diversion refers to the drainage channels for rainwater and domestic sewage. In the past urban planning and construction, the combined use of rainwater and sewage was used, and the combined sewage was discharged directly into the river’s canals. In today’s increasingly serious urban sewage, the pollution caused by the combined discharge of old rainwater and sewage obviously has not met the requirements of energy saving and emission reduction in modern society. Therefore, promoting the diversion of rainwater and sewage is a new demand for social development.