Preparation of a heat-treated red mud catalyst and its application in water treatment technology

A catalyst and water treatment technology, applied in the direction of oxidized water/sewage treatment, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of high cost and low catalytic efficiency

Active Publication Date: 2016-11-30
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the catalysts currently used generally have low catalytic efficiency, high cost, and certain selectivity, which are difficult to meet actual needs.

Method used

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  • Preparation of a heat-treated red mud catalyst and its application in water treatment technology

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specific Embodiment approach 1

[0010] Specific Embodiment 1: In this embodiment, the preparation method of the catalyst in the water treatment method of heat-treating red mud to catalyze ozone oxidation to remove organic matter in water is: (1) Cleaning, after washing an appropriate amount of raw red mud with distilled water for 5 times, remove the red mud The ash content on the surface of the raw ore is dried at 70°C; (2) Preparation for high temperature treatment, weigh 2.0-3.0 grams of the cleaned red mud, put it in a cleaned and dried porcelain crucible, and cover the porcelain crucible Put the crucible cover in the muffle furnace for high temperature treatment; (3) high temperature treatment conditions, take 8~12℃ / min as the heating rate, raise the temperature in the muffle furnace to 390~410℃, and increase the temperature at 390~410℃ Keep warm at ℃ for 3.5-4.5 hours; (4) Cooling conditions, take 8-12 ℃ / min as the cooling rate, reduce the temperature in the muffle furnace to 23-27 ℃, and keep it at 23-2...

specific Embodiment approach 2

[0014] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the application method of heat-treated red mud catalyst in water treatment is as follows: the polluted water body first undergoes primary sedimentation primary treatment-aeration biochemical-secondary sedimentation secondary treatment Afterwards, heat treatment is carried out on the red mud catalyst to catalyze ozone oxidation treatment, and then the water is discharged after post-treatment.

specific Embodiment approach 3

[0015] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the raw red mud ore in the preparation step (2) of the catalyst is in a block shape. Other steps and parameters are the same as those in Embodiment 1.

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Abstract

The invention provides a preparation method of heat-treated red mud catalyst and its application method in water treatment technology, which belongs to the field of water treatment technology and environmental functional materials. The properties of the heat-treated red mud catalyst can be powder or granules, and the aluminum industry waste red mud is used as the main raw material. High-temperature heat treatment is used to optimize the reorganization of the red mud components and improve the catalytic activity of the red mud; Removal of degradable organic pollutants. The invention solves the problems of poor catalyst activity and high preparation cost in the existing catalytic ozonation technology. As an advanced water treatment technology, heat-treated red mud catalytic ozonation technology is simple in process, low in cost, and has a good decontamination effect on refractory organic pollutants. These advantages are conducive to the efficient application of heat-treated red mud catalysts in water treatment technology , improve the purification effect of conventional water treatment technology, and provide a new, efficient and cheap water treatment catalyst and advanced treatment technology for the purification of refractory organic pollutants in water.

Description

technical field [0001] The invention relates to a heterogeneous catalytic ozone oxidation decontamination water advanced treatment technology and a preparation method of the catalyst. Background technique [0002] In recent years, with the extensive application of chemical synthesis products in people's daily life and industrial and agricultural production, the types and contents of refractory organic pollutants and new pollutants in the water environment have increased significantly. The increasingly complex water pollution situation poses new challenges to my country's water quality safety assurance technology. Since conventional water treatment and sewage treatment processes are mainly to remove suspended and colloidal pollutants in water, the ability to remove organic pollutants, especially refractory organic pollutants, is very limited or even powerless. Therefore, advanced treatment technology must be used to further ensure water quality safety. Among them, the heter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24C02F1/78
Inventor 齐飞李华楠徐冰冰孙德智
Owner BEIJING FORESTRY UNIVERSITY
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