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Flue gas purification adsorbent for saline-alkali soil improvement and saline-alkali soil improvement method

A technology for saline-alkali soil improvement and flue gas purification, which is applied in the direction of chemical instruments and methods, restoration of polluted soil, application, etc., can solve pollution and other problems, achieve the effect of increasing interaction, quick effect, and reducing soil alkalinity

Active Publication Date: 2019-08-16
SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects in the prior art and provide a flue gas purification adsorbent and a saline soil improvement method for saline-alkali soil improvement, which can eliminate the pollution and pollution caused by wastes such as bituminous coal power plant flue gas and the like. Turning waste into treasure can also improve saline-alkali soil

Method used

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  • Flue gas purification adsorbent for saline-alkali soil improvement and saline-alkali soil improvement method
  • Flue gas purification adsorbent for saline-alkali soil improvement and saline-alkali soil improvement method

Examples

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Effect test

Embodiment 1

[0058] 1) Provide a certain amount of saline-alkali soil to be improved, air-dry the saline-alkali soil to be improved for several days, sieve through a 20-mesh sieve, and store it.

[0059] 2) Weigh 20g of saline-alkali soil to be improved and adsorbed SO 2 After 4A molecular sieve 1g, adsorb SO 2 The final 4A molecular sieve is used as a saline-alkali soil improver, that is, the amount of the improver to be improved is 5% compared to the saline-alkali soil to be improved. After thorough mixing, put it into a 20ml centrifuge tube and add a certain amount of deionized water.

[0060] 3) Put the mixture obtained in step 2) into an incubator, maintain the temperature at 25±2° C., and the humidity at 40%.

Embodiment 2

[0062] 1) Provide a certain amount of saline-alkali soil to be improved, air-dry the saline-alkali soil to be improved for several days, sieve through a 20-mesh sieve, and store it.

[0063] 2) Weigh 20g of the saline-alkali soil to be improved and the SO absorbing 2 The final 4A molecular sieve is 3g, that is to say, the addition amount of the improvement agent is 15% compared with the saline-alkaline soil to be improved. After thorough mixing, put it into a 20ml centrifuge tube, and add a certain amount of deionized water.

[0064] 3) Put the mixture obtained in step 2) into an incubator, maintain the temperature at 25±2° C., and keep the humidity at 50%.

Embodiment 3

[0066] 1) Provide a certain amount of saline-alkali soil to be improved, air-dry the saline-alkali soil to be improved for several days, sieve through a 20-mesh sieve, and store it.

[0067] 2) Weigh 20g of the saline-alkaline soil to be improved and 3g of the 4A molecular sieve after absorbing NOx, and the 4A molecular sieve after absorbing NOx is used as the modifier of the saline-alkali soil to be improved, that is, to maintain the amount of the modifier compared to the saline-alkali soil to be improved 15%, put it into a 20ml centrifuge tube after thorough mixing, and add a certain amount of deionized water.

[0068] 3) Put the mixture obtained in step 2) into an incubator, maintain a temperature of 25±2° C., and a humidity of 70%.

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Abstract

The invention provides a flue gas purifying adsorbent used for improving saline-alkali soil and a saline-alkali soil improvement method. The flue gas purifying adsorbent used for improving saline-alkali soil comprises a molecular sieve, the molecular sieve absorbs acidic gas. The method effectively uses the wastes such as the flue gas purifying adsorbent discharged by a power plant for improving the saline-alkaline soil, solves the place waste and environment pollution problems due to waste discharged by the power plant, increases the cultivated land resource, increases the comprehensive production capacity of the cultivated land, changes waste into valuables, and promotes the development of circular economy.

Description

technical field [0001] The invention belongs to the technical field of soil improvement, and in particular relates to a flue gas purification adsorbent for saline-alkali soil improvement and a saline-alkali soil improvement method. Background technique [0002] The land salinization phenomenon in our country is prominent. According to the statistics of the second national soil census (1996), the area of ​​saline-alkali land in my country is 35 million hectares. It is mainly distributed in the plains of 23 provinces, municipalities, and autonomous regions in 5 large regions, including the coastal saline-alkali soil area, the Huanghuai-Hai plain saline-alkali soil area, the northwest semi-arid saline-alkali soil area and arid saline-alkali soil area, and the northeast saline-alkali soil area. With the continuous growth of population and the intensification of land degradation, the problem of shortage of cultivated land has become increasingly prominent, seriously restricting ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/18B09C1/08C09K17/08C09K109/00B01J20/30
CPCB01J20/186B01J2220/4806B09C1/08C09K17/08C09K2109/00
Inventor 魏伟沈群孙予罕孙楠楠唐涛
Owner SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI
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