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Ferrum-silicon modified alta-mud for water treatment and its preparation method

A technology for water treatment and bentonite, which is applied in the fields of adsorption water/sewage treatment, chemical instruments and methods, and other chemical processes. Good removal effect, increase ion exchange capacity, improve hydrophobicity

Inactive Publication Date: 2009-01-14
SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, in natural bentonite, due to the extremely strong hydrophilicity of the surface silicon-oxygen structure and the hydrolysis of a large number of exchangeable cations between the layers, there is usually a thin water film on the surface, which limits its application in water treatment; , the solid-liquid separation speed of bentonite is slow, and the dehydration effect of flocs is poor, which also affects its practical application.

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  • Ferrum-silicon modified alta-mud for water treatment and its preparation method
  • Ferrum-silicon modified alta-mud for water treatment and its preparation method

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Embodiment Construction

[0022] The present invention will be described in detail below with reference to the accompanying drawings.

[0023] synthesis principle

[0024] Natural soil is a kind of layered aluminosilicate, and the layers are combined by electrostatic interaction. Using the exchangeability of cations between layers, inorganic polyhydroxy metal ions such as: Al, Cr, Fe, Bi, Zr , Co, Si, etc. are exchanged into the interlayer, and the unit layers are bridged and stretched to form a new mineral with a "layer network" structure of two-dimensional channels, that is, pillared bentonite. Pillared bentonite has high specific surface area and thermal stability, and its Lewis acid activity is very high. At the same time, due to the unique polarity, pore size distribution and high specific surface area of ​​pillared bentonite, its adsorption performance is greatly enhanced. Bentonite undergoes ion exchange to charge the crystal surface, so that water molecules can easily enter the unit cells to ...

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Abstract

The invention relates to a water-treatment iron-silicon modified alta-mud and relative preparation, which uses iron modifier as main material, uses iron-silicon inorganic crosslink agent and catabrom (CTMAB) as organic cylinder agent to modify the sodium alta-mud, prepare Fe-Si inorganic crosslink and Fe-Si organic composite modified alta-mud. And the preparation comprises that first preparing crosslink agent, then preparing iron-silicon inorganic crosslink mud, and preparing iron-silicon inorganic composite mud. The inventive alta-mud can be used as novel water treatment agent with low cost and wide application.

Description

technical field [0001] The invention relates to a water treatment material and a preparation method thereof, in particular to an iron-silicon modified bentonite for water treatment and a preparation method thereof. Background technique [0002] Bentonite is a kind of clay mineral widely distributed in nature, so it is a non-metallic mineral. China's bentonite mineral resources are very rich, and its reserves rank first in the world, accounting for 60% of the world's total. The estimated resources are more than 7 billion tons, and it is characterized by wide distribution, shallow burial, easy mining and complete varieties. Bentonite and its purified and modified products have some superior characteristics to varying degrees. These characteristics mainly include swelling, hydrophilicity (or lipophilicity, such as organic bentonite), adsorption, cation exchange, catalytic activity, dispersibility, Suspension, adhesion, thixotropy, stability, non-toxic. With the development of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/12C02F1/28
Inventor 邵红刘学贵
Owner SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY