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wasteE WATER TREATING AGENT FOR TREATING FLUORINE AND HEXAVALENT CHROMIUM, AND wasteE WATER TREATMENT METHOD USING ABOVE wasteE WATER TREATING AGENT
wasteE WATER TREATING AGENT FOR TREATING FLUORINE AND HEXAVALENT CHROMIUM, AND wasteE WATER TREATMENT METHOD USING ABOVE wasteE WATER TREATING AGENT
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机译:一种用于处理氟和六价铬的废水处理剂,以及一种采用以上废水处理剂的废水处理方法
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摘要
PURPOSE: A waste water treating agent and a waste water treatment method using the same is to efficiently remove impurities such as fluorine and hexavalent chromium contained in the waste water produced in the field of steel, leather and semiconductor plants. CONSTITUTION: A waste water treating agent comprises 20-40% (w/v) of lanthanum nitride (La(NO3)3), 0.5-3.0% (w/v) of barium chloride (BaCl2) and 1.0-3.0% (w/v) of trivalent ferrous compound in water (H2O) as a solvent, and further 1.5-2.5% (w/v) of hydroxylamine hydrochloride, the waste water treating agent being used for removing fluorine and hexavalent chromium. The treatment process comprises the steps of:Collecting wastewater(1), a reaction tank(17), a waste water treating agent tank linked with the reaction tank(15), a neutralizing tank(18), a polyacrylamide tank(14) and a sodium hydroxide tank(16) linked with the neutralizing tank respectively, a sedimentation tank(5), a sand filter(6), a screening step(8).
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