In order to take the construction waste water and rainwater used for the project,firstly, it should design collection pipe network,three tanks,and sedimentation sand filtration water purification tank nitrogen removal and purification of water supply pumping station,water system,then according to the construction sequence of system and main methods of the provisions of the organization construction, the construction of waste water and rainwater collection and purification to construction water quality standards,so as to solve the past construction waste water and rainwater collection without purification, which cannot be used for mixing mortar and flushing water problems of pipeline engineering. The system has reasonable design,simple construction,strong applicability,and could be reused,which could provide the design and construction of the construction enterprises according to different conditions.%为使施工废水和雨水利用于工程，需先设计收集管网、三级沉淀中和储罐、砂滤水除氮净化槽、净化水供应泵站、水利用等系统，再按照规定的系统施工顺序及主要方法组织施工，可将施工废水和雨水收集、净化达到施工用水的质量标准，从而解决过去施工废水和雨水收集后未经净化，不能用于搅拌砂浆和管道冲洗等工程用水的问题。本系统设计合理，施工简便，适用性强，设备还可重复利用，可提供广大施工企业根据不同工况参照设计与施工。
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