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Composite waterproof sodium bentonite blanket for treating phosphorus-rich and arsenic-rich polluted water

A technology of waterproof sodium-based and nano-based bentonite, which is applied in the preparation of composite waterproof sodium-based bentonite blankets and the field of composite waterproof sodium-based bentonite blankets, can solve the problems of unresolved breakthroughs, phosphorus and arsenic composite pollution control technology, etc. Efficient removal, good anti-seepage function, and the effect of promoting inhibition

Inactive Publication Date: 2021-11-02
中新瑞美(天津)环保科技有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Up to now, the treatment technology that can solve the problem of phosphorus and arsenic composite pollution in water bodies at the same time with high efficiency and low cost has not yet been broken through

Method used

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  • Composite waterproof sodium bentonite blanket for treating phosphorus-rich and arsenic-rich polluted water
  • Composite waterproof sodium bentonite blanket for treating phosphorus-rich and arsenic-rich polluted water
  • Composite waterproof sodium bentonite blanket for treating phosphorus-rich and arsenic-rich polluted water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Such as figure 1 As shown, a composite waterproof sodium-based bentonite blanket for treating phosphorus-rich and arsenic-polluted water bodies includes: laying a non-woven geotextile layer (1) from top to bottom, a composite waterproof sodium-based bentonite layer (2), The bottom geotextile layer (3); the non-woven geotextile layer (1) and the bottom geotextile layer (3) are fixedly connected together by the fibers (4) of the hooks.

[0025] The non-woven geotextile layer (1) is polypropylene staple fiber non-woven fabric of 200-230 g / m2. The bottom geotextile layer (3) is a 110-150 g / m2 polypropylene flat wire woven cloth. The composite waterproof sodium-based bentonite layer (2) is achieved by allowing the nano-based bentonite to load and control active substances rich in phosphorus and arsenic pollution by impregnating it, that is, impregnating the waterproof sodium-based bentonite in a layer containing 80% by weight of the active substance. After 24 hours in the ...

Embodiment 2

[0028] Different from Example 1: LaCl 3 , CeCl 3 , FeCl 3 The molar ratios are 5:0.5:10, respectively.

[0029] The test results are shown in Table 1.

Embodiment 3

[0031] Different from Example 1: LaCl 3 , CeCl 3 , FeCl 3 The molar ratios are 10:0.5:20, respectively.

[0032] The test results are shown in Table 1.

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Abstract

The invention belongs to the technical field of water pollution prevention and control, and discloses a composite waterproof sodium bentonite blanket for treating phosphorus-rich and arsenic-rich polluted water, the blanket comprises a non-woven geotextile layer, a composite waterproof sodium bentonite layer and a bottom geotextile layer which are sequentially laid from top to bottom, and all the layers are fixed together by using fibers of the non-woven fabric layer through a needling process. The composite waterproof sodium bentonite layer is realized by loading La < 3 + >, Ce < 3 + > and Fe < 3 + > on sodium bentonite in a spraying or dipping manner. The preparation process is simple and convenient, is low in economic cost, and is suitable for ecological environment treatment of phosphorus-rich and arsenic-rich polluted water bodies.

Description

technical field [0001] The invention belongs to the technical field of water pollution prevention and control, and in particular relates to a composite waterproof sodium-based bentonite blanket used in water environment treatment projects for controlling phosphorus-rich and arsenic-polluted water bodies, and a preparation method for the composite waterproof sodium-based bentonite blanket . Background technique [0002] In the fight against pollution in my country, water pollution prevention and control is one of the important contents, among which phosphorus-rich and arsenic-polluted water bodies are a type of water body for ecological environment management, such as Yangzonghai Lake, Datun Lake Lake in Yunnan Plateau, Chaohu Lake in Anhui Province, Taihu Lake in Jiangsu Province, etc. Water bodies are polluted by rich phosphorus and arsenic. The invention CN104074206A discloses a geotechnical mat for preventing heavy metal pollution and its preparation method, but there are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/58C02F1/62B32B27/32B32B27/02B32B9/00B32B9/04B32B5/06C02F101/10C02F101/20
CPCC02F1/58C02F1/62B32B5/022B32B5/02B32B9/00B32B9/047B32B5/06C02F2101/105C02F2101/20B32B2262/0253
Inventor 刘朝辉刘志强张泽张付爽黄仁亮苏荣新
Owner 中新瑞美(天津)环保科技有限公司
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