<p>A process of dewatering aqueous suspension employing a flocculating system comprising treating the suspension with a flocculating amount of a first flocculant and a dewatering amount of a second flocculant, and subjecting the suspension to mechanical dewatering to form a cake, wherein the first flocculant brings about flocculation and assists thickening of the suspension and the second flocculant is a water-soluble or water swellable polymer that is mixed into the suspension is a water-soluble or water swellable particulate polymer having a particle diameter of at least 20 microns.</p>
申请公布号
WO2005097687(A1)
申请公布日期
2005.10.20
申请号
WO2005EP02079
申请日期
2005.02.28
申请人
CIBA SPECIALTY CHEMICALS WATER TREATMENTS LIMITED;WHITTAKER, TONY;NORMAN, PETER;SMITH, DARRYL