双江口水电站1号砂石加工系统生产废水处理工艺

Wastewater Treatment Technology of No.1 Sand and Stone Processing System of Shuangjiangkou Hydropower Station

双江口水电站1号砂石加工系统采用湿法生产工艺,生产过程中需对各级骨料用水冲洗,其耗水量大,且产生悬浮物含量极高的废水,如不进行处理就直接排放,将会污染河流水质。结合该工程特点,采用了“沉砂池预处理+辐流沉淀池+斜管沉淀池+过滤机脱水”工艺进行处理。介绍了工艺流程、所需主要设备及各处理车间的生产技术参数。工程实践表明,该废水处理工艺效果显著。

The No.1 sand and stone processing system of Shuangjiangkou Hydropower Station adopts the wet production process.During the production process,the aggregate at all levels needs to be washed with water,which consumes a large amount of water and produces wastewater with high content of suspended solids.If it is not treated before discharge,the river will be polluted.Combined with the characteristics of the project,the process of"sand basin pretreatment+radial flow sedimentation tank+inclined tube sedimentation tank+filter dehydration"is adopted for treatment.The technological process,the main equipment needed and the production technical parameters of each treatment workshop are introduced.The engineering practice shows that the effect of the wastewater treatment process is remarkable.