WATER PURIFICATION COMPOSITION

摘要

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.