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Catalyst for ozone catalytic oxidation treatment of chemical wastewater and preparation method of catalyst

A technology for ozone catalytic oxidation and chemical wastewater, applied in catalyst activation/preparation, special compound water treatment, oxidized water/sewage treatment, etc.

Inactive Publication Date: 2019-08-13
ZHEJIANG CATHAYRIPE ENVIRONMENTAL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a catalyst for ozone catalytic oxidation treatment of high-salt and high-chlorinated industrial wastewater and its preparation method in view of the technical problems existing in the ozone catalytic oxidation treatment process for degrading high-salt and high-chlorinated industrial wastewater

Method used

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  • Catalyst for ozone catalytic oxidation treatment of chemical wastewater and preparation method of catalyst
  • Catalyst for ozone catalytic oxidation treatment of chemical wastewater and preparation method of catalyst
  • Catalyst for ozone catalytic oxidation treatment of chemical wastewater and preparation method of catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Embodiment 1 Carrier Water Absorption Measurement

[0074] Weigh the carrier γ-Al 2 o 3 Particles 50g (m, accurate to 0.01g); put them into a beaker, add water to immerse, stir continuously, use a funnel to separate the water from the sample after 1h, let it stand for 10min, and then weigh the sample after absorbing water (m1, accurate to 0.01g) . Calculate the water absorption rate (Y, %) of the carrier according to formula (1).

[0075] Carrier γ-Al in the embodiment of the present invention 2 o 3 The water absorption rate of the particles is 55.0%, that is, every 100g carrier (γ-Al 2 o 3 ) The amount of completely absorbed water is 55ml.

Embodiment 2

[0076] Embodiment 2 catalyst preparation

[0077] 1. Weigh 380g carrier γ-Al 2 o 3 ,spare.

[0078] 2. The water absorption rate Y of the carrier measured according to Example 1 is 55%, and it is converted according to the volume of every 1g of water as 1ml. Therefore, the water absorption rate of the carrier is 55ml per 100g of the catalyst carrier. The volume of the solution weighed by equal-volume impregnation of the pretreated carrier is 380×55 / 100=209ml.

[0079] 3. Preparation of dipping solution

[0080] Get part deionized water, add successively 50% manganese nitrate aqueous solution (49.4g), ferric nitrate nonahydrate (5.1g), nickel nitrate hexahydrate (4.7g), cerium nitrate hexahydrate (5.3g), copper nitrate trihydrate ( 12.2g) was stirred for 30 minutes to dissolve the solid completely, then added deionized water until the total volume of the mixed solution was 209ml, and made an impregnating solution (i.e. copper-iron-manganese-nickel-cerium salt impregnating s...

Embodiment 3

[0090] Embodiment 3 catalyst preparation

[0091] Steps 1 and 2 are identical to Embodiment 2;

[0092] 3. Preparation of dipping solution

[0093] Get part of deionized water, add manganese acetate tetrahydrate (33.8g), ferric nitrate nonahydrate (5.1g), nickel acetate tetrahydrate (4.0g), cerium acetate (4.5g), copper acetate monohydrate (10g) successively, Stir for 30 minutes to dissolve the solid completely, then add deionized water until the total volume of the mixed solution is 209ml, and make an impregnation solution (i.e. copper-iron-manganese-nickel-cerium salt impregnation solution), for subsequent use, wherein the impregnation solution The mass of copper acetate converted to copper oxide (CuO), the mass of ferric nitrate converted to iron oxide (Fe 2 o 3 ), the mass of nickel acetate converted to nickel oxide (NiO), the mass of manganese acetate converted to manganese oxide (MnO 2 ) mass, cerium acetate converted to cerium oxide (CeO 2 ) to the total amount of ...

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Abstract

The invention discloses a catalyst for ozone catalytic oxidation treatment of chemical wastewater and a preparation method of the catalyst. The catalyst comprises a carrier and active components, wherein the active components are metallic copper, iron, nickel, manganese and cerium oxides. The catalyst has good catalytic activity for the ozone catalytic oxidation treatment of high-salt and high-chlorine chemical wastewater with high TDS content and high chloridion content, and the removal rate of wastewater COD reaches 40% or above. The catalyst is applied to deep treatment of biochemical effluents containing high salt and high chlorine in sewage treatment plants.

Description

technical field [0001] The invention relates to a catalyst for advanced treatment of industrial wastewater and a preparation method thereof, in particular to a catalyst for ozone catalytic oxidation treatment of industrial wastewater and a preparation method thereof, belonging to the field of water treatment and catalysis. [0002] Background of the invention [0003] High-salt and high-chlorinated industrial wastewater refers to wastewater discharged by chemical enterprises with a total dissolved solid content higher than 5000 mg / L, a chloride ion content higher than 2000 mg / L, and containing refractory organic matter. The biochemical effluent total dissolved solids (TDS) content of a sewage treatment plant in a chemical industry is about 12000 mg / L, the chloride ion content is about 6000 mg / L, and the COD value is between 80 and 120 mg / L, which is in line with the characteristics of high-salt and high-chlorine wastewater. Reverse osmosis technology is widely used in enginee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/889B01J37/02C02F1/78C02F101/12C02F101/30
CPCB01J23/8892B01J23/002B01J37/0213C02F1/725C02F1/78C02F2101/12C02F2305/023C02F2101/30B01J2523/00
Inventor 杜汉桥李光辉
Owner ZHEJIANG CATHAYRIPE ENVIRONMENTAL ENG
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