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洗煤废水是选煤厂的主要污染源之一。荣昌选煤厂多年来,积极治理洗煤废水,取得了显著的经济、环境和社会效益。该厂选煤工艺为跳汰浮选联合流程。浮选尾煤水是一种含有大量悬浮液的细小煤粉,其浓度为60～80g/l,年排放量为60～70万m~3。过去由于处理系统不完善,处理效果差,排放后使部分河道堵塞,污染河流水质。
Coal washing wastewater is one of the major pollution sources in coal preparation plants. Rongchang Coal Preparation Plant over the years, and actively governance coal washing wastewater, has made significant economic, environmental and social benefits. The plant coal preparation process for the combined process of jig flotation. The flotation tail water is a kind of small coal powder containing a large amount of suspension with a concentration of 60-80 g / l and an annual discharge of 600-700 000 m3. In the past due to the imperfect treatment system, the treatment effect was poor, causing part of the river channels to become clogged after discharge so as to pollute the river water quality.