该方法简单，处理效果好，处理后上清水完全回用于洗煤，实现了洗水闭路循环。
All upper clear water that have been treated can be used to wash coal, which realizes closed cycle of washing water.
该方法简单，处理效果好，处理后上清水完全回用于洗煤，实现了洗水闭路循环。
All upper clear water that have been handled can be used to wash coal, which realizes to closed circuit the circulation of washing water.
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