| 摘要 |
1527304 Flocculating compositions CHEMED CORP 27 Oct 1976 [11 Nov 1975] 44650/76 Heading C3V [Also in Division C1] Compositions which can be dissolved in water to give a feed liquid for water treatment (e.g. of industrial or waste water) comprise discrete particles, each of which comprises an aggregate of sub-particles of a flocculating polymer, subparticles of a solid diluent which aids in reducing agglomeration of the polymer sub-particles in water by physically separating them, and 0À1-20% (by weight of the polymer) of absorbed water. The polymer may be an acrylamide polymer, polystyrene sulphonate or polyethylene oxide, and the solid diluent may be sodium chloride, sulphate, sulphite, bisulphate or hydrosulphite, soda ash or magnesium sulphate. |
