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Manufacturing method of modified meerschaum

A manufacturing method and a sepiolite technology are applied in the field of environmental engineering and can solve the problems of small channels, weak surface acidity of natural sepiolite, weak heavy metal adsorption capacity and the like.

Active Publication Date: 2013-08-28
青岛众祥环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the surface of natural sepiolite has weak acidity, small channels, poor thermal stability, poor catalytic reaction ability, and weak adsorption capacity for heavy metals in acid mine wastewater.

Method used

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  • Manufacturing method of modified meerschaum

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Embodiment Construction

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0019] see figure 1 , a kind of manufacture method of modified sepiolite, comprises the steps:

[0020] Acidification treatment: Although different strong acids have the same treatment mechanism for sepiolite, compared with the treatment results of nitric acid, sulfuric acid and hydrochloric acid, hydrochloric acid has the best effect, and the adsorption capacity of sepiolite is related to the concentration of hydrochloric acid used for acid activation. Great relationship, too large or too small acid concentration will affect the properties of sepiolite, use 15%-17% hydrochloric acid to acidify sepiolite at a temperature of 453K-473K, the results show that the treated sepiolite The pore structure changes, the diameter of the original micropores expands, and the surface area increases significantly. Generally, the more micropores in a...

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Abstract

The invention discloses a manufacturing method of modified meerschaum and relates to the field of environmental engineering. Natural meerschaum is subjected to acidizing so that micropore sizes are enlarged; a specific surface area is increased; and adsorption and degradation of heavy metals in acid mine waste water are promoted. The modified meerschaum can improve a SO4<2-> removal rate and has a low use amount so that energy saving is realized. A moderate intensity acidity or alkalinity is produced by the ion exchange modified meerschaum so that feeding water buffer and pH stabilization are promoted; growth conditions of sulfate reducting bacteria are satisfied; and product water pH stabilization is guaranteed. Surfactant-based treatment improves meerschaum dispersibility, promotes growth of sulfate reducting bacteria, accelerates decomposition of organics in acidic mine waste water, and improves acidic mine waste water treatment efficiency. After heating stirring, the product is separated and dried to form a superfine processed meerschaum product.

Description

technical field [0001] The invention relates to the field of environmental engineering, in particular to a method for manufacturing modified sepiolite. Background technique [0002] Immobilized microorganism technology is a biotechnology that immobilizes selected microorganisms on a selected carrier to make them highly dense and maintain biological activity, and can proliferate rapidly and in large quantities under suitable conditions. This technology is applied to various wastewater treatment, which is conducive to increasing the concentration of microorganisms (especially microorganisms with special functions) in the bioreactor, is conducive to the resistance of microorganisms to the influence of adverse environments, is conducive to the separation of solid and liquid after the reaction, and shortens the treatment time. required time. Sulfate-reducing bacteria are the most important microorganisms in the treatment of acidic mine water. There are also many kinds of carrie...

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Application Information

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IPC IPC(8): C02F3/00C02F3/10
CPCY02W10/10
Inventor 蔡昌凤杨茜徐建平
Owner 青岛众祥环保科技有限公司
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