Double-carrier ozone catalyst and modular catalytic oxidation waste water treatment device

An ozone catalytic oxidation, dual-carrier technology, applied in the direction of oxidized water/sewage treatment, water/sewage treatment, degassed water/sewage treatment, etc., can solve the problem of short service life of carbon-based catalysts, easy loss of catalytic components, and catalytic performance Reduce problems such as improving stability and catalytic performance, high stability and catalytic performance, and improving mechanical properties

Active Publication Date: 2018-09-04
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, most of the existing ozone catalysts use a single carrier, and the catalysts with a single carrier often have their own defects, such as the short service life of the carbon-based catalyst, the carbon particles on the surface of the carrier are easy to fall off, resulting in reduced catalytic performance, and the catalytic performance of the alumina-based catalyst. Not as good as the former, and there are problems such as easy loss of catalytic components

Method used

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  • Double-carrier ozone catalyst and modular catalytic oxidation waste water treatment device
  • Double-carrier ozone catalyst and modular catalytic oxidation waste water treatment device
  • Double-carrier ozone catalyst and modular catalytic oxidation waste water treatment device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0106] Follow the steps below to prepare a dual carrier ozone catalyst:

[0107] (1) Select 25 g of γ-alumina particles with a size of 3-5 mm, wash them with deionized water, and dry them at 105° C. for 12 hours.

[0108] (2) Weigh 2.5 g of glucose and 0.5 g of nickel acetate tetrahydrate at room temperature, and add 25 mL of deionized water to prepare the first impregnating solution.

[0109] (3) Weigh 1.3 g of copper acetate monohydrate and 0.4 g of cobalt acetate tetrahydrate at room temperature, and add them into the first impregnating liquid to dissolve completely to obtain the impregnating liquid.

[0110] (4) Vacuum impregnate the weighed γ-alumina in the above impregnation solution. After the impregnation is sufficient, place the impregnated γ-alumina at room temperature for 6 hours to fully diffuse the precursor, and then place it at 65°C Dry and pre-pyrolyze in a vacuum oven.

[0111] (5) Put the above-mentioned dried γ-alumina in a nitrogen-protected furnace at a ...

Embodiment 2

[0113] refer to Figure 10 , through the module switching control system 500 to control the opening and closing of the corresponding solenoid valve 400 to form a series operation mode of the catalytic reaction modules, and at the same time open the cut-off valve 330 of the catalytic reaction module that is determined to participate in the reaction and keep it unblocked. Waste water enters through the water inlet 110 of the waste water pipeline 100, ozone is generated by the ozone generation system 200, mixed with the waste water and enters the catalytic reaction module ①, and then passes through the remaining four catalytic reaction modules ②~⑤, and is separated by the gas-liquid separation system 600 , the liquid phase flows out from the treated wastewater outlet 630 to become effluent, and the gas phase is treated and harmless by the tail gas treatment system 700 and then emptied.

Embodiment 3

[0115] refer to Figure 11 , through the module switching control system 500 to control the opening and closing of the corresponding solenoid valve 400, forming a series operation mode of the catalytic reaction module, and closing the stop valve 330 at both ends of the catalytic reaction module ①, at this time, the catalytic reaction module ① has been separated from the process, The catalyst can be serviced, cleaned or replaced. The remaining four reaction modules operate normally in series.

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Abstract

The invention discloses a double-carrier ozone catalyst and a modular catalytic oxidation waste water treatment device. The double-carrier ozone catalyst is prepared from a composite carrier, a firstcatalytic component and a second catalytic component, wherein the composite carrier is prepared from a carbon-based material and aluminum oxide, the first catalytic component comprises carbon-based material growth catalysis metal, and the second catalytic component is prepared from catalytic ozonation active metal. The composite carrier of the binary vector ozone catalyst comprises the carbon-based material and the aluminum oxide, has good surface activity of the carbon-based material and excellent mechanical performance of an aluminum oxide material, and thus is further conducive to giving play to the catalytic performance of the catalytic ozonation active metal, so that the stability and catalytic performance of the catalyst are improved on the whole.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a double-carrier ozone catalyst and a modular catalytic oxidation wastewater treatment device. Background technique [0002] With the continuous expansion of population size and the continuous development of social economy, the discharge of urban domestic sewage and industrial sewage also increases, and the load of sewage treatment continues to increase, which requires higher and higher levels of sewage treatment. After conventional biochemical treatment, sewage often remains with refractory pollutants. If it is directly discharged into natural water bodies, it is easy to cause organic matter enrichment, which will cause harm to the environment and organisms. Therefore, advanced treatment of such sewage is required. As a kind of advanced oxidation technology, ozone catalytic oxidation has the advantages of strong oxidation ability, weak selectivity, and no secondary pollution. It ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755C02F1/78C02F9/04
CPCC02F1/20C02F1/725C02F1/78B01J23/755
Inventor 张潇源魏卡佳黄霞顾婉聪梁鹏
Owner TSINGHUA UNIV
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