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    • 4. 发明申请
    • WATER PURIFICATION COMPOSITION
    • 水净化组合物
    • WO2008092724A1
    • 2008-08-07
    • PCT/EP2008/050322
    • 2008-01-14
    • UNILEVER N.V.UNILEVER PLCHINDUSTAN UNILEVER LIMITEDMAHAPATRA, SamiranSARKAR, Ayan
    • MAHAPATRA, SamiranSARKAR, Ayan
    • C02F1/52C02F1/28C02F1/56
    • C02F1/5245C02F1/281C02F1/286C02F1/56C02F2101/103
    • The invention relates to a water purification composition. The invention particularly relates to a water purification composition that is especially useful for removal of trace quantities of harmful contaminant like Arsenic in addition to removal of microorganisms like virus, bacteria and cyst to make the water suitable for human consumption. It is thus an object of the present invention to provide for a water purification composition that meets the Arsenic removal requirements. In particular, it is another object of the present invention to provide for a water purification composition that provides purified water with low Arsenic content that meets the WHO standards of less than 10 ppb, especially Arsenic (III) compounds. Accordingly the present invention provides a water purification composition comprising: (a) a coagulating agent which is a water soluble inorganic metal salt having trivalent cation; (b) a flocculating agent which is a high molecular weight water soluble polymer; (c) an adsorbent which is a water insoluble oxide, hydroxide or oxo-hydroxides of titanium, zirconium, iron, copper or zinc; and (d) a biocide which is a halogen compound.
    • 本发明涉及一种水净化组合物。 本发明特别涉及一种水净化组合物,除了除去微生物如病毒,细菌和囊肿之外,特别可用于除去微量的有害污染物如砷,以使水适合人类消费。 因此,本发明的目的是提供一种满足除砷要求的水净化组合物。 特别地,本发明的另一个目的是提供一种水提纯组合物,其提供满足WHO标准小于10ppb,特别是砷(III)化合物的低砷含量的净化水。 因此,本发明提供一种水净化组合物,其包含:(a)凝结剂,其是具有三价阳离子的水溶性无机金属盐; (b)絮凝剂,其是高分子量水溶性聚合物; (c)钛,锆,铁,铜或锌的水不溶性氧化物,氢氧化物或氧代氢氧化物的吸附剂; 和(d)作为卤素化合物的杀生物剂。