向家坝电站砂石加工及混凝土生产废水处理技术

Waste water treatment technology for aggregate processing and concrete production of Xiangjiaba Hydropower Station

砂石加工及混凝土生产系统所产生的废水是水电站施工中废水排放的主要来源。传统的废水处理工艺存在着占用场地面积大、沉淀池排泥困难、污泥脱水能力不足或循环时间长等问题。向家坝工程砂石加工的废水处理系统设计结合当地条件采用水库型沉淀池,解决了传统废水处理工艺带来的难题。详细介绍了该废水处理系统的生产工况、主要参数、经济效益及改进方向等。向家坝水电站废水处理技术的应用与探索,为水电站施工废水处理实现"零排放"目标拓展了新的思路。

The waste water from aggregate processing and concrete production system is the main sources of the waste water in hydropower station construction. The problems of large land occupation, difficult sludge discharge of settling pool, insufficient sludge dewatering capacity and long circular period etc. trouble the traditional waste water treatment. According to local condi- tion, the reservoir - type settling pool was adopted for the waster water treatment system, which successfully solved the above dif- ficulties. The detail production situation, main parameters, economic benefit and improvement direction etc. of the waste water treatment system are introduced. The application and exploration of waste water treatment technology provides a new thought for realizing ＂ zero release＂ of waste water.