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A hydraulic cavitation catalytic degradation system and a method for hydraulic cavitation catalytic degradation of dye wastewater

A hydraulic cavitation and catalytic degradation technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problems of high-efficiency, rapid and thorough treatment, and unequal dye wastewater , to achieve the effect of improving efficiency, improving efficiency and stabilizing properties

Active Publication Date: 2022-04-05
LIAONING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that a large amount of dye wastewater cannot be completely, efficiently, quickly and thoroughly treated, the present invention provides a hydraulic cavitation catalytic degradation system and a method for hydraulic cavitation catalytic degradation of dye wastewater

Method used

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  • A hydraulic cavitation catalytic degradation system and a method for hydraulic cavitation catalytic degradation of dye wastewater
  • A hydraulic cavitation catalytic degradation system and a method for hydraulic cavitation catalytic degradation of dye wastewater
  • A hydraulic cavitation catalytic degradation system and a method for hydraulic cavitation catalytic degradation of dye wastewater

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Embodiment 1

[0035] Example 1 Preparation of Catalyst for Hydrodynamic Cavitation Catalytic Degradation of Dye Wastewater

[0036] (1) TiO 2 powder preparation

[0037] TiO with different temperatures and calcination times prepared by sol-gel method and calcination method 2 powder.

[0038] Ti(OBu) 4 dissolved in ethanol (C 2 h 5 OH), followed by stirring for 2.0h to obtain yellow transparent TiO 2 Sol. Yellow transparent TiO 2 The sol obtained a gel after standing at room temperature for 12 h. After drying the gel in an oven at 100°C for 24h, the dried gel was calcined in a muffle furnace at 400°C for 3.0h, 700°C for 3.0h, 550°C for 1.0h, and 550°C for 5.0h , cooled and then ground to obtain TiO with a particle size of 300-400nm at four different temperatures and calcination times. 2 powder.

[0039] (2) Fe 3+ -doped TiO 2 powder preparation

[0040] Ti(OBu) 4 dissolved in ethanol (C 2 h 5 OH), followed by stirring for 2.0h to obtain yellow transparent TiO 2 Sol. Approp...

Embodiment 2

[0051] Embodiment 2 A kind of method of hydraulic cavitation catalytic degradation dye wastewater

[0052] (1) A hydraulic cavitation catalytic degradation system

[0053] Such as Figure 6 As shown, a hydraulic cavitation catalytic degradation system: the degradation tank 1 is used to hold the wastewater containing dyes and the catalyst, the degradation tank 1 is provided with a cooling chamber 2, the lower end of the cooling chamber 2 is provided with a water inlet 3, and the upper end is provided with Water outlet 4, the starting end of main circulation pipeline 5 is arranged on the bottom of degradation tank 1 and communicates with degradation tank 1 inner cavity, the terminal of main circulation pipeline 5 is located at the upper end of degradation tank 1, and the terminal of main circulation pipeline 5 is placed in containing Below the liquid level of the dye wastewater and the catalyst, the main circulation pipeline 5 is provided with a circulation pump 6, a throttle v...

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Abstract

The invention discloses a hydraulic cavitation catalytic degradation system and a method for hydraulic cavitation catalytic degradation of dye wastewater. The technical solution adopted is: using the hydrodynamic cavitation catalytic degradation system, adding catalysts to the wastewater containing dyes, the resulting mixed solution is circulated through the main circulation pipeline, and the light and heat generated by the hydrodynamic cavitation effect are used as the excitation source to carry out hydrodynamic cavitation. Catalytic degradation reaction. The method of the invention is simple, novel, efficient and thorough, has low treatment cost, does not generate by-products, does not cause environmental pollution, and is suitable for large-scale treatment of dye wastewater.

Description

technical field [0001] The invention belongs to the application field of hydraulic cavitation, in particular to 3+ -doped TiO 2 As a catalyst, it is a method for catalytically degrading organic dye wastewater under hydraulic cavitation conditions. Background technique [0002] Organic dyes are important artificially synthesized organic compounds. As dyeing agents, they are widely used in food, textile, plastics, cosmetics and other fields. But at the same time, the residual dyes in industrial wastewater enter the environment and become one of the main pollutants. Dye wastewater discharged into nature can hinder the penetration of light and the transfer of oxygen, so it hinders the photosynthesis of aquatic plants and affects the growth of aquatic organisms. And ultimately interfere with the natural environment purification process. In addition, due to the non-biodegradability and toxicity of dye wastewater, the harm they cause to organisms is long-term and continuous. E...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/72C02F1/34C02F1/30B01J23/745B01J21/06C02F101/30
CPCC02F1/34C02F1/725C02F1/30C02F1/722B01J21/063B01J23/745C02F2101/308C02F2305/10C02F2305/023C02F2305/026B01J35/39
Inventor 王君李灌澍宋有涛张朝红
Owner LIAONING UNIVERSITY