Desulfurization sludge from a flue-gas scrubber operating with calcium-containing additives is dewatered in a thin layer with precipitatable impurities in the liquid phase being precipitated out by neutralization and collected in a thin layer which is then rinsed. The presence of these precipitated impurities on the gypsum which is recovered by this process has not been found to be detrimental to the use of it as a construction material.
利用含有
钙添加剂的烟气洗涤器处理的脱
硫污泥,采用薄层脱
水的方式,液相中可沉淀的杂质通过中和沉淀到薄层中,然后进行冲洗。通过这个过程回收的
石膏表面沉淀的杂质并不会影响其作为建筑材料的使用。