为解决潘集选煤厂生产补水难以及潘集电厂高盐废水处理难的问题，基于电厂高盐废水和选煤厂循环水水质的分析结果，在不同用水条件下分别以选煤厂入浮煤泥为对象进行了浮选药剂用量探索试验，以选煤厂沉降煤泥为对象进行了絮凝沉降试验。结果表明：电厂高盐废水中的钙、镁离子含量较高，硬度是选煤厂循环水的7.36倍；电厂高盐废水较小幅度降低了浮选精煤产率与分选效率，但与循环水混合使用可保障浮选效果，满足浮选正常生产要求；相较于循环水与生活用水，电厂高盐废水可有效降低煤泥水澄清液的浊度，符合煤泥水沉降需求；电厂高盐废水可以作为选煤厂循环水的生产补水，但需控制补水比例，当电厂高盐废水作为一半的生产补水时，每年可节省费用约140.1万元。电厂高盐废水作为潘集选煤厂的部分生产补水可行，不仅可满足选煤厂浮选及煤泥水沉降环节的处理需求，还可一定程度上降低电厂高盐废水的处理难度，并有效提高选煤厂的经济效益。

Panji Coal Preparation Plant is operating with inadequate supply of washwater while Panji Power Plant finds it difficult to treat the high-salt wastewater that it produced. To address the issue, an analysis is made of the quality of the wastewater of the power plant and the circulating water of the coal washery. Based on the analysis result, test on dosage of reagent in flotation of slime and test on flocculating settling of sedimented slime in the instances of using the wastewater and circulating water are both conducted. Test results show that the wastewater of the power plant contains high proportion of Ca²⁺ and Mg²⁺ ions with a hardness 7.36 times higher than the circulating water; the exclusive use of wastewater in flotation of slime can lead to somewhat reduction of yield of flotation concentrate, and its use in combination with the circulating water can well meet the general requirement as a good flotation result can be assured; compared with the circulating water and water for domestic use, the use of the wastewater can effectively lower the turbidity of the clarified water after the solid particles are sedimented; the wastewater can be used as make-up water for Panji coal washery in controlled proportions, and when it is used as a half of the amounts of washwater, 1.401 million yuan of water cost can be saved a year; the use of the wastewater as partial washwater proves to be practically feasible, which can not only meet the requirements of slime flotation and sedimentation processes, but also make it possible to ease the difficulty in treatment of high-salt wasterwater, and effectively improve the economic performance of Panji plant.