Catalyst for treating organic wastewater and preparation method thereof

Abstract

The invention discloses a catalyst for treating organic wastewater and a preparation method of the catalyst, which relate to the field of organic wastewater treatment. The preparation method comprisesthe following steps that 1, adding a carrier into a hydrotalcite-like aqueous solution, and performing continuous stirring for loading; 2, carrying out water bath aging on the loaded hydrotalcite-like compound obtained in step 1 to obtain a primary catalyst; 3, carrying out suction filtration on a primary catalyst obtained in the step 2 by using deionized water until a filtrate is neutral to obtain a secondary catalyst; and 4, drying a secondary catalyst obtained in the step 3 to obtain the finished catalyst. According to the invention, a hydrotalcite-like compound catalyst is prepared from hydrotalcite-like compound and a carrier by a coprecipitation method; the active ingredients in the hydrotalcite-like compound can be uniformly embedded in the structure of the hydrotalcite-like compound carrier, cannot be agglomerated, and cannot be covered, so that the contact area of the surface active substances of the hydrotalcite-like compound is increased, and the catalytic performance of the active ingredients of the catalyst is further improved to the maximum extent.

Description

Technical field [0001] The invention relates to the field of organic wastewater treatment, in particular to a catalyst for treating organic wastewater and a preparation method thereof. Background technique [0002] LDHs is a layered double hydroxy metal oxide, also known as layered anionic compound. LDHs is a compound hydrotalcite-like material assembled by a positively charged main board and interlayer anions through non-covalent bond interactions. The special composition structure includes the diversity of the main board chemical composition, the adjustable metal cation ratio and the interlayer The richness of anion species, the positively charged main board is mainly composed of divalent and trivalent metal cations. Common divalent metal cations mainly include Zn 2 + , Mg 2+ , Cu 2+ , Ca 2+ Etc., trivalent metal cations mainly include Al 3+ , Fe 3+ , Cr 3+ . The layered structure of hydrotalcite and the special composition structure of ionic hydrotalcite materials include th...

AI Technical Summary

Problems solved by technology

The catalyst can effectively treat toxic and difficult-to-degrade industrial organic wastewater containing phenol, sulfosalicylic acid, H-acid, and surfactants. It not only has high catalytic activity, but also controls the loss of active components. Among them, copper The loss of ions has been reported in the literature to be reduced by more than an order of magnitude, but at a temperature of 150 ° C, its activity is less than 80%

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