Rare earth polymerized silicon aluminum chloride and preparation method thereof

Abstract

The invention discloses rare earth polymerized silicon aluminum chloride, wherein the rare earth in the rare earth polymerized silicon aluminum chloride refers to lanthanum rare earth. A method for preparing the rare earth polymerized silicon aluminum chloride according to claim 1 comprises the following steps: (1) putting 1.2-1.5 tons of technical hydrochloric acid with the mass concentration of 10-30%, 50-100kg of sulfuric acid with the mass concentration of 98%, and 0.3-0.6 tons of aluminum hydroxide powder into a reaction kettle, slowly raising the temperature to be 80-100 DEG C, reacting for 1 hour, and cooling down to be 60-70 DEG C; and (2) adding 5-10kg of lanthanum rare earth into the reaction liquid of the step (1), and dropping 100kg of a sodium silicate solution with the mass concentration of 20-30%, raising the temperature to be 100-120 DEG C, reacting for 2 hours and subsequently cooling down to be the room temperature so as to prepare a lanthanum rare earth polymerized silicon aluminum chloride liquid. The lanthanum rare earth is any one or a mixture of lanthanum oxide, lanthanum chloride and lanthanum sulfate. The rare earth polymerized silicon aluminum chloride has the remarkable advantages of high decoloring and flocculation removal rate.

Description

[0001] Technical field: [0002] The invention relates to an industrial sewage treatment agent and a preparation method thereof. Rare earth polysilicon aluminum chloride and a preparation method thereof. Background technique: [0003] Paper mills spread all over urban and rural areas. In addition, the sewage produced by power plants, coal washing plants and pharmaceutical factories pollutes the environment very seriously. However, the current sewage treatment agents have a low removal rate of only 50-60% for decolorization and flocculation in sewage. Invention content: [0004] The object of the present invention is to provide a rare earth polysilicoaluminum chloride with high decolorization and flocculation removal rate for sewage and a preparation method thereof. [0005] The technical solution for realizing the purpose of the present invention is the rare earth polysilicoaluminum chloride, characterized in that: the rare earth of the rare earth polysilicoaluminum chlori...

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Problems solved by technology

[0003] Paper mills are spread all over urban and rural areas. In addition, the sewage produced by power plants, coal washing plants and pharmaceutical factories pollutes the environment very seriously. However, the current sewage treatment agents have a low removal rate of only 50-60% for decolorization and flocculation in sewage.