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Ozone catalyst for treating refractory organic matter in water and preparation method of ozone catalyst

A technology of refractory organic matter and catalyst, which is applied in the field of ozone catalyst for treating refractory organic matter in water and its preparation, can solve the problem of low oxidation efficiency of ozone utilization technology, and achieve the goal of improving oxidation efficiency, strong operability, and strong ozone catalytic performance Effect

Inactive Publication Date: 2019-09-24
BEIJING CAPITAL CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on the problems existing in the prior art, the object of the present invention is to provide an ozone catalyst for treating refractory organic matter in water and its preparation method, which can solve the problem of low oxidation efficiency of the existing ozone utilization technology

Method used

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  • Ozone catalyst for treating refractory organic matter in water and preparation method of ozone catalyst

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preparation example Construction

[0019] An embodiment of the present invention provides a method for preparing an ozone catalyst for treating refractory organic matter in water, comprising the following steps:

[0020] Step 1, pretreatment of activated alumina pellets: after cleaning the activated alumina pellets with deionized water, fully drying the activated alumina pellets;

[0021] Step 2, impregnation treatment: fully immerse the activated alumina pellets after drying in the step 1 in the pre-prepared copper nitrate precursor solution, and then fully wash the activated alumina pellets after dipping, The activated alumina pellets are dried to obtain activated alumina pellets loaded with a copper nitrate precursor;

[0022] Step 3, calcination treatment: the activated alumina pellets loaded with copper nitrate precursor obtained in the step 2 are subjected to high-temperature calcination, and the alumina catalyst composite material loaded with copper oxide obtained after high-temperature calcination is th...

Embodiment 1

[0035] This example provides an ozone catalyst for treating refractory organic matter in water. It is made of activated alumina pellets and copper nitrate precursor solution as raw materials, and is calcined by impregnation method to prepare alumina loaded with copper oxide. catalyst composites.

[0036] The preparation method of this ozone catalyst comprises the following steps:

[0037] Step 1, pretreatment of activated alumina pellets: 5 mm activated alumina pellets are washed with deionized water, and the activated alumina pellets are dried for 12 hours at a temperature of 105°C to 110°C;

[0038] Step 2, impregnation treatment: fully impregnate 1000g of activated alumina pellets in the pre-prepared copper nitrate precursor solution with a mass concentration of 1%, the amount of copper nitrate precursor solution and activated alumina pellets: according to the copper ion The mass ratio to alumina is 1:100 (mass concentration 1%), and the immersion time is 8 hours; then, af...

Embodiment 2

[0043]This example provides an ozone catalyst for treating refractory organic matter in water, which is a copper oxide-loaded alumina catalyst made from activated alumina pellets and copper nitrate precursor solution and calcined by impregnation method composite material.

[0044] The preparation method of this ozone catalyst comprises the following steps:

[0045] Step 1, step 2, and step 3 are the same as in Example 1, see Example 1, and will not be repeated here;

[0046] The difference between this example and Example 1 is that the mass concentration of the pre-prepared copper nitrate precursor solution is 3%, and the addition amount of copper nitrate trihydrate reagent is 94.45 g when preparing.

[0047] The alumina catalyst composite material loaded with 1% copper oxide prepared in this example is the alumina catalyst composite material loaded with 3% copper oxide, and the removal rate of p-chlorophenol in the catalyst composite material is 70%.

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Abstract

The invention discloses an ozone catalyst for treating refractory organic matter in water and a preparation method of the ozone catalyst. The catalyst is an aluminum oxide catalyst composite material loaded with a copper oxide. The method comprises the following steps: step 1, carrying out pre-treatment: washing activated aluminum oxide small balls with deionized water, and then fully drying the activated aluminum oxide small balls; step 2, carrying out dipping treatment: fully dipping the activated aluminum oxide small balls dried in the step 1 in a pre-prepared copper nitrate precursor solution, fully washing the activated aluminum oxide small balls after dipping, and then carrying out drying to obtain activated aluminum oxide small balls loaded with the copper nitrate precursor; and step 3, carrying out calcining treatment: carrying out high-temperature calcination on the activated aluminum oxide small ball loaded with the copper nitrate precursor obtained in the step 2, wherein the aluminum oxide catalyst composite material loaded with the copper oxide obtained after high-temperature calcinations is the ozone catalyst used for treating the refractory organic matter in water. The method is simple in process equipment and high in operability and is suitable for large-scale production.

Description

technical field [0001] The invention relates to the field of preparation of ozone catalyst materials for water treatment, in particular to an ozone catalyst for treating refractory organic matter in water and a preparation method thereof. Background technique [0002] Ozone is widely used in water treatment because of its strong oxidizing properties, fast reaction rate, less dosage, clean and pollution-free, and no persistent residue in water. [0003] At present, the application of ozone in water treatment mainly focuses on the treatment of organic matter, disinfection, iron removal, fierce removal, color removal, odor and taste, etc. However, there are still some problems in the treatment of wastewater using ozone oxidation technology alone. On the one hand, the reaction selectivity between ozone and organic matter is strong. In a low dose and short time, ozone cannot completely mineralize pollutants, and the intermediate products generated by decomposition Will prevent f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/72C02F1/78C02F1/72C02F101/30C02F101/34C02F101/36
CPCB01J23/002B01J23/72C02F1/725C02F1/78C02F2101/30C02F2101/345C02F2101/36
Inventor 李霞刘杰林甲宋新新李传举张鹤楠惠媛
Owner BEIJING CAPITAL CO LTD
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