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Bentonite compounded porous material and preparation method thereof

A technology of porous materials and bentonite, applied in chemical instruments and methods, other chemical processes, adsorption water/sewage treatment, etc., can solve the difficulty of controlling the polycondensation reaction of dicyandiamide and formaldehyde, the difficulty of mass production of products, and the difficulty of complete removal, etc. problem, to achieve the effect of low production cost, easy to remove, and easy to obtain raw materials

Active Publication Date: 2013-02-06
中国非金属矿工业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the material is finally a powder product. After the wastewater is treated, the powdery bentonite is dispersed in the wastewater. Even if a flocculant is used for flocculation treatment, it is still difficult to completely remove it, and it is easy to form secondary pollution; and the polycondensation reaction of dicyandiamide and formaldehyde is difficult to control. Mass production of products is more difficult

Method used

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  • Bentonite compounded porous material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] ① Grind the artificially selected calcium-based bentonite raw ore and pass through a 200-mesh sieve to make bentonite powder. Put the bentonite powder in an oven at 100°C for 1.5 hours, and put the dried bentonite powder into a dryer to wait Use, control moisture ≤ 12%. The oven adopts an electric blast drying oven.

[0026] ② Add the active agent octadecyltrimethylammonium chloride into distilled water and stir until dissolved. If it is difficult to dissolve, heat it slightly to make an active agent solution. Pour the active agent solution into the bentonite powder and use a high-speed stirrer Mix and stir evenly without agglomeration to make a bentonite suspension. The speed of the high-speed stirrer should be above 1000r / min.

[0027] ③ Add the plant foaming agent to the bentonite suspension, and stir with a high-speed mixer until it is evenly mixed while adding it, then penetrate the porous air outlet of the aeration pump into the bentonite suspension and stir at ...

Embodiment 2

[0030] ① Grind the artificially selected calcium-based bentonite raw ore and pass through a 200-mesh sieve to make bentonite powder. Put the bentonite powder in an oven at 105°C for 2 hours, and put the dried bentonite powder into a dryer for use , control moisture ≤ 12%. The oven adopts an electric blast drying oven.

[0031] ② Add the active agent cetyltrimethylammonium bromide into distilled water and stir until dissolved. If it is difficult to dissolve, heat it slightly to make an active agent solution. Pour the active agent solution into the bentonite powder and use a high-speed stirrer Mix and stir evenly without agglomeration to make a bentonite suspension. The speed of the high-speed stirrer should be above 1000r / min.

[0032] ③ Add the plant foaming agent to the bentonite suspension, and stir with a high-speed mixer until it is evenly mixed while adding it, then penetrate the porous air outlet of the aeration pump into the bentonite suspension and stir at high speed...

Embodiment 3

[0035] ① Grind the artificially selected calcium-based bentonite raw ore and pass through a 200-mesh sieve to make bentonite powder. Put the bentonite powder in an oven at 110°C for 2.5 hours, and put the dried bentonite powder in a dryer for Use, control moisture ≤ 12%. The oven adopts an electric blast drying oven.

[0036] ② Add the active agent lauryl dimethyl amine oxide into distilled water and stir until dissolved. If it is difficult to dissolve, heat it slightly to make an active agent solution. Pour the active agent solution into the bentonite powder and mix with a high-speed stirrer Stir evenly without agglomeration to make a bentonite suspension. The speed of the high-speed stirrer should be above 1000r / min.

[0037] ③ Add the plant foaming agent to the bentonite suspension, and stir with a high-speed mixer until it is evenly mixed while adding it, then penetrate the porous air outlet of the aeration pump into the bentonite suspension and stir at high speed for 12...

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Abstract

The invention discloses a bentonite compounded porous material and a preparation method thereof. The preparation method adopts bentonite as a basis material; and bentonite modification, porous modeling and other technical measures are adopted for changing the performance of bentonite, so as to prepare porous organic bentonite which has a large specific surface area and high adsorbability, and further prepare the bentonite compounded porous material capable of adsorbing various ions. The bentonite compounded porous material is used for adsorbing organic materials during industrial wastewater treatment and can avoid secondary pollution. The invention has the advantages that the process is simple; the raw materials are easy to obtain; the manufacturing cost is low; the effect of adsorbing COD, TP, TN and NH3-N in sewage is high; and the total removal ratio can be 95 percent.

Description

technical field [0001] The invention relates to a composite material and a preparation method thereof, in particular to a bentonite composite porous material and a preparation method thereof. Background technique [0002] With the development of industries such as papermaking and printing and dyeing, the continuous discharge of industrial wastewater has made environmental pollution increasingly serious. Industrial wastewater has the characteristics of deep color, high COD value, complex and changeable composition, and wide distribution. At present, the main methods of treating industrial wastewater include biological method, hydrogen peroxide method, chemical method, electrolysis method, adsorption method and so on. But there are different degrees of limitations. For example, the chemical method will produce a large amount of sludge that is difficult to handle. Although the hydrogen peroxide method has a good treatment effect on the color and COD of wastewater, the cost is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/12B01J20/30C02F1/28
Inventor 王志强郭海盈叶永波谢爱虎王鸽
Owner 中国非金属矿工业有限公司
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