污水处理厂污泥制作吸附剂的方法及应用

Research Process in Production and Application of Sewage Sludge-based Adsorbent

城市污水处理厂产生的污泥可以用来制作吸附剂。目前国外用污泥制作吸附剂的方法主要包括:污泥直接热解、污泥和其他废弃物混合热解、气体物理活化以及用H2SO4、ZnCl2、H3PO4化学活化等。由污泥制成的吸附剂可用于去除污(废)水中的染料、金属离子、苯酚,也可用于气体污染物的去除等。介绍了用污泥制作吸附剂的方法及其应用,并展望了该领域今后的研究和发展方向。

Adsorbent can be produced from sludge. At present, methods to produce adsorbent from sludge overseas include pyrolysing sludge directly, pyrolysing mixture of sludge and other wastes, physical activation of sludge by gas, chemical activation of sludge by H2SO4, ZnCl2, H3PO4 and other methods. The adsorbent produced from sludge can be widely used to remove dyes, metal ions, phenols, gas pollutants and so on from wastewater. Production and application of sludge-based adsorbent are introduced, and the future development trend of this field is prospected.