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Composite medium capable of adsorbing heavy metals

A technology for adsorbing heavy metals and composite media, applied in the direction of alkali metal compounds, adsorbed water/sewage treatment, alkali metal oxides/hydroxides, etc., can solve the problem of blocking activated carbon, etc., to improve efficiency, increase adsorption capacity, improve Effect of effective adsorption surface area

Active Publication Date: 2012-11-28
周鑫
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Problems solved by technology

The main feature of the present invention is that the use of crop straw powder or mycelium can effectively solve the problem that the evaporation of sulfur in the adsorption medium used in the process of high-temperature gas treatment may block the micropores on the activated carbon; Adsorption capacity and effective adsorption surface area, improve the efficiency of mercury adsorption, the above advantages make the present invention can also be applied to the removal of heavy metals in the gas-liquid mixed environment

Method used

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  • Composite medium capable of adsorbing heavy metals

Examples

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example 1

[0013] After mixing 5.0% of crop straw, 10.0% of sulfur, 77.0% of activated carbon, and 8.0% of chitosan in a certain order, add deionized water twice the total mass of the above-mentioned mixture and mix again. After granulation and drying, a composite medium for adsorbing heavy metals can be obtained. (Attachment 1)

example 2

[0015] Mix 10.0% crop stalks, 5.0% sulfur, 77.0% activated carbon, and 8.0% chitosan in a certain order, then add deionized water twice the total mass of the above mixture and mix again , granulation, and drying to obtain a composite medium for adsorbing heavy metals.

example 3

[0017] Mix 10.0% crop straw, 5.0% sodium sulfide, 77.0% activated carbon, and 8.0% chitosan in a certain order, then add deionized water twice the total mass of the above-mentioned mixture and mix again , granulation, and drying to obtain a composite medium for adsorbing heavy metals.

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Abstract

The invention relates to a preparation method and a using method of a composite medium capable of adsorbing heavy metals against the current pollution problem of heavy metals such as copper, mercury and the like in a quantity of chemical engineering enterprises. An adsorbing medium with a certain size is obtained by adhering activated carbon, sulfur, sulfides, crop straw powder and mycelia together through a bioactive substance, uniformly mixing 1.0-20.5% of crop straw or mycelia, 1.0-20.0% of sulfur or sulfides, 50.0%-95.5% of activated carbon and 2.5-10.0% of chitosan after acidification and ultrasonic processing according to a certain sequence, granulating, forming and drying. The composite medium can effectively enrich copper, mercury and other heavy metals in industrial waste water and further has an obvious effect on capturing mercury in gas.

Description

technical field [0001] The invention relates to a preparation method of a composite medium capable of effectively adsorbing mercury or copper elements in liquid or gas, and belongs to the field of industrial waste water and waste gas treatment. Background technique [0002] Heavy metals refer to metals with a specific gravity greater than 4 or 5, and there are about 45 kinds. What we usually call heavy metal pollution refers to the increase of heavy metal content in the environment caused by human activities, which will lead to the deterioration of environmental quality after exceeding the normal range. [0003] Especially in the past two decades, the wastewater discharged from some chemical plants usually contains a variety of toxic and harmful substances such as nickel, lead, copper, zinc, chromium, mercury and other heavy metals. big threat. When these pollutants enter the water environment, they will produce toxic effects and cause harm to human health. Children's lead...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/28B01J20/30C02F1/28C02F1/62B01D53/02
Inventor 周鑫郭志华
Owner 周鑫
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