Method of obtaining a coagulant product, product intended to produce said coagulant, and method of treating waste water and/or industrial water using said coagulant
AssigneeVelolia Eau-Compagnie Generale Des Eaux
InventorsHervé Suty, Marc Caligaris
Life of this patent
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Abstract
The invention relates to a method of producing a coagulant product. It is characterized in that a starting material is prepared containing sludge resulting from the treatment of drinking water and an ore containing iron and/or aluminum, said starting material undergoing acid attack to form iron salts, aluminum salts or a mixture thereof. Application of said coagulant during implementation of a physico-chemical step of the treatment of waste water and/or industrial water.
Claims19
A method of obtaining a coagulant product, wherein a starting material is prepared containing sludge resulting from the treatment of drinking water, said sludge being enriched with an ore containing iron or aluminum or iron and aluminum, said starting material undergoing acid attack in order to form iron salts, aluminum salts or a mixture thereof.
A coagulant product for the treatment of waste water or industrial water or waste water and industrial water obtained by acid attack of a starting material comprising sludge deriving from a drinking water treatment plant enriched with an ore containing iron or aluminum or iron and aluminum.
A method of treating waste water or industrial water or waste water and industrial water, including a physico-chemical step using a coagulant, wherein said coagulant comprises an ore electrolyte based on a trivalent ion at least partially derived from a starting material containing sludge from a drinking water treatment line, said sludge being enriched with an ore containing iron or aluminum or iron and aluminum, said starting material having undergone acid attack to form iron salts, aluminum salts or a mixture thereof.
Dependencies are inferred from the claim text.