Aluminum-zirconium modified zeolite, preparation method and method for controlling release of nitrogen and phosphorus in polluted bottom mud

A technology for modifying zeolite and polluting sediment, which is applied in the direction of water pollutants, sludge treatment, chemical instruments and methods, etc. It can solve the problems of increasing the volume of the bottom of the water body, reducing the water depth of the water body, and changing the aquatic environment to achieve good control Effect, reduction of phosphorus concentration, effect of large adsorption capacity

Active Publication Date: 2020-11-03
POWERCHINA HUADONG ENG COPORATION LTD
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Problems solved by technology

[0004] At present, the commonly used covering materials mainly include clean sediment, sand, soil and other inert materials, but the covering layer is generally thick, which will increase the volume of the bottom of the water body, reduce the water depth of the water body, and change the aquatic environment.

Method used

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  • Aluminum-zirconium modified zeolite, preparation method and method for controlling release of nitrogen and phosphorus in polluted bottom mud
  • Aluminum-zirconium modified zeolite, preparation method and method for controlling release of nitrogen and phosphorus in polluted bottom mud
  • Aluminum-zirconium modified zeolite, preparation method and method for controlling release of nitrogen and phosphorus in polluted bottom mud

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Embodiment Construction

[0036] This embodiment is a method for controlling the release of nitrogen and phosphorus in the polluted bottom mud, covering the bottom mud with aluminum-zirconium modified zeolite in situ.

[0037] In this example, the aluminum-zirconium modified zeolite includes 10 parts by weight of natural zeolite with a particle size of 0.5-1 mm, 3 parts of anhydrous aluminum trichloride, 1 part of zirconium oxychloride octahydrate, and 50 parts of distilled water.

[0038] The preparation method steps of in-situ covering material 2 in this example are as follows:

[0039] a. According to the above parts by weight, after rinsing the natural zeolite for 2 to 3 times to remove impurities, place it in an oven at 105°C for drying;

[0040] b. According to the above parts by weight, anhydrous aluminum trichloride, zirconium oxychloride octahydrate and distilled water are mixed, stirred and dissolved according to the proportioning ratio to form a mixed solution;

[0041] c. Add the natural z...

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Abstract

The invention relates to and provides aluminum-zirconium modified zeolite, a preparation method and a method for controlling release of nitrogen and phosphorus in polluted bottom mud . According to the technical scheme, the aluminum-zirconium modified zeolite is characterized by being prepared by combining natural zeolite with anhydrous aluminum trichloride and zirconium oxychloride octahydrate. The aluminum-zirconium modified zeolite comprises the following components in parts by weight: 5 to 15 parts of natural zeolite; 1 to 5 parts of anhydrous aluminum trichloride; 0.4 to 1.6 parts of zirconium oxychloride octahydrate. The aluminum-zirconium modified zeolite perferably comprises the following components in parts by weight: 10 parts of natural zeolite; 3 parts of anhydrous aluminum trichloride; and 1 part of zirconium oxychloride octahydrate. The product is suitable for the field of water environment treatment.

Description

technical field [0001] The invention relates to an aluminum-zirconium modified zeolite, a preparation method and a method for controlling the release of nitrogen and phosphorus in polluted bottom mud. Applicable to the field of water environment governance. Background technique [0002] The problem of eutrophication in my country's water bodies is serious. Sediment, as an important part of water bodies, is an important reservoir for the main nutrients of nitrogen and phosphorus in water. When the water quality is improved, the nitrogen and phosphorus in the sediment will be released to the overlying water, causing the overlying water to cause secondary pollution. Therefore, it is very important to take reasonable and effective methods to deal with sediment to prevent and control water eutrophication. [0003] In-situ covering of bottom mud, that is, covering one or more layers of cleaning materials on the bottom mud to separate the bottom mud from the overlying water and p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/18B01J20/30C02F11/00C02F101/10C02F101/16
CPCB01J20/186C02F11/00C02F2101/105C02F2101/16Y02W10/10
Inventor 洪思远黄伟斌沈世龙
Owner POWERCHINA HUADONG ENG COPORATION LTD
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