关键词: 矿山酸性废水, HDS 处理工艺, 高效底泥循环回流技术

Abstract: HDS（high density sludge）process is a highly efficient sludge recycling technology and has the advantages of improving reagent utilization rate，sludge concentration and sludge settling and thickening properties in treating acid mine drainage. It is widely used in acid mine drainage in foreign countries but is only under some research in China. study is made on the mechanism of HDS process in treating acid mine drainage by laboratory experiments in combination with literature study. Analysis is also made on the progress in its technical research and its application.

Key words: Acid mine drainage, HDS treating process, High efficiency sludge cycling technology