对于河道排污口分不出污水来源的原雨水口,根据合流管管径的大小、管底标高与污水管网的标高差,采用不同的末端截污方式,根据各个排污口的具体情况,大致有双鸭嘴阀溢流井、提升泵式溢流井、下开启式阀门井、一体式提升泵井等四种截污办法。
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