Small streets and merge modules households in the rain drainage system of pollution, stormwater discharged into the river, the city sewage collection sewage pipes up evacuation Sewage Treatment Works.

• 中小街道和合流排水单元户进行雨污分流改造后，雨水排入河道，城市生活污水经污水管道收集起来后送污水处理厂处理。