基于絮凝沉降结合技术的水利水电工程砂石废水处理研究

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中图分类号：TQ110.9 文献标志码：A文章编号：1001-5922（2025）07-0049-04

Research of sand and stone wastewater treatment of water conservancy and hydropower projects based on flocculation and sedimentation combination technology

XIA Zhihua，TAO Wei （China New Building Materials Design and Research Institute Co.，Ltd.，Hangzhou 31O022，China）

Abstract：Through the experimental study of the sand and stone wastewater treatment processof water conservancy and hydropower projects，an efective wastewater treatment method was discussd.The mechanical dewatering of sandandgravelwastewaterbycombining coagulantandflocculanttechnologycansignificantlyreduce theconcentration of suspended solids and COD（chemical oxygen demand）.The results showed that when the mass concentrations of coagulant and flocculant were 1 g/L and 0.5g/L ，respectively，the removal rate of suspended solidsin wastewater reached more than 90% ，and the removal rate of COD exceeded 80% . The treated wastewater was also precipitated and filtered to further improvethe purification efect of water quality.The wastewater treatment process proposed in this study hasgood application prospects and economic benefits，and can provide a reference for wastewater treatment in water conservancy and hydropower projects

Key words：water conservancy and hydropower project;sandstone; wastewater treatment;process optimization 随着水利水电工程建设快速发展，砂石废水处 理成为各行业备受关注的问题。（剩余6253字）