method for removing pollutants from a continuous aqueous stream, suitable solution for addition to an aqueous stream, use of the method and admixture for adding to a polluted aqueous stream

摘要

B WATER CURRENT POLLUTION REMOVAL METHOD CONTINUES, APPROPRIATE SOLUTION FOR ADDITION TO A WATER CURRENT, USE OF METHOD AND MIXTURE TO ADD A WATER POLLUTED CURRENT D A method for removing dissolved materials and / or particles a liquid stream comprising flocculation vigorously mixing polysaccharides or hydrocolloids into the liquid stream and subsequent gelation of the polysaccharides or hydrocolloids with cations capable of gelling them. Large, robust, pollutant and polysaccharide or hydrocolloid gelled agglomerates are formed with the aid of appropriate cations. Gelled agglomerates are well suited for separating a liquid stream by flotation, a sieve, a centrifuge, a cyclone or other conventional separation processes. Also described is a method for mixing undissolved polysaccharide or hydrocolloid with an aqueous stream polluted by shearing the polysaccharide or hydrocolloid into the aqueous stream to improve logistics and provide savings in treating large volumes of water. Also described is the use of dilute polysaccharide solutions for treating a variety of effluent streams. An application of the invention is provided for hydrocarbon removal within the oil industry, but also for other types of oil-containing water as well as water with organic or particulate pollution.