北京市政三有限责任公司京津分公司去年承接了西四环外吴家村污水处理厂污水干线的施工任务。这条总长8000余米的污水干线由两条管线组成,一条是污水输送管线,自石景山杨庄起沿人民渠向东到玉泉路再向南至吴家村污水处理厂; Beijing municipal three limited liability company Beijing-Tianjin Branch last year to undertake the West Fourth Ring Wujiacun sewage treatment plant sewage main line construction tasks. This total of more than 8,000 meters of sewage line consists of two pipelines, one is the sewage pipelines, starting from Shijingshan Yangzhuang along the People’s Canal east to Yuquan Road and then south to Wujiacun sewage treatment plant;