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2013年天津水务将斥资100亿元投向民生工程建设领域,推进各项民生水务工程建设,全力确保天津供水和防汛安全,其中将铺设截污管道330km,建成污水处理厂6座,铺设配套管网40km。这是中国城市排水建设大跨步的一个新案例。排水管网主要包括排污水管和排雨水管两类,前者将收集的工业、生活水送入处理系统,经过处理后回到自然界再生利用,后者收集降雨送去江河湖海。我国大部分城市原有的排水管网均是雨污合流系统,该系统节省了管网的铺设,但也存在明显的缺陷:一方面,降
In 2013, Tianjin Water will spend 10 billion yuan to invest in people’s livelihood construction, promote all livelihood water projects and make every effort to ensure water supply and flood control safety in Tianjin. Among them, 330km of sewer interception and 6 sewage treatment plants will be constructed and supporting pipelines will be laid 40km. This is a new case of large-scale urban drainage construction in China. The drainage pipe network mainly includes two types of sewer pipes and rainwater pipes. The former will collect the collected industrial and domestic water into the treatment system and will be returned to nature for recycling after being treated. The latter will collect the rainfall and send it to rivers, lakes and seas. Most of the cities in our country’s original drainage network are rain and sewage confluence system, which saves the laying of pipe network, but there are also obvious shortcomings: on the one hand,