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Nanosystem-based water treatment agent and preparation method thereof

A water treatment and system technology, applied in the direction of water/sewage treatment, reduced water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of reducing the effectiveness, consumption, and limited effect of chemicals, and achieve the goal of overcoming passivation , Efficient removal efficiency, easy to use effect

Active Publication Date: 2020-01-10
江苏环保产业技术研究院股份公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method simply sums up the effects of some common substances, and the effect is limited
Moreover, in the process of peeling off the passivation layer on the surface of zero-valent iron, the oxidant will also have a redox effect with zero-valent iron, consume zero-valent iron and oxidant in the system, and reduce the utility of the agent

Method used

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  • Nanosystem-based water treatment agent and preparation method thereof
  • Nanosystem-based water treatment agent and preparation method thereof

Examples

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Embodiment 1

[0045] A preparation method of water treatment agent based on nano system:

[0046] Weigh 20g of sodium tungstate dihydrate and 10g of disodium hydrogen phosphate and dissolve it in 100ml of deionized water, then add 50ml of absolute ethanol, at the same time add 12ml of oleic acid and 3ml of oleylamine into the mixture, and stir at 200rpm for 10min. Afterwards, the mixture was placed in a reaction kettle, and reacted under anaerobic heating at 150° C. for 1 h. Weighed 1.0 g of trimethylammonium chloride-modified chitosan and added it to the mixture, and stirred at 200 rpm for 3 hours to obtain mixture A. Weigh 3.00 g of ferrous sulfate and disperse it in 100 ml of absolute ethanol, stir mechanically for 5 min at a stirring intensity of 500 rpm to obtain mixture B. Use nitrogen gas to aerate 100ml of deionized water for deoxygenation treatment, weigh 1.80g of potassium borohydride and dissolve it in deionized water, and add the solution into the aforementioned mixed solution ...

Embodiment 2

[0048] A preparation method of water treatment agent based on nano system:

[0049] Weigh 20g of sodium tungstate dihydrate and 10g of disodium hydrogen phosphate and dissolve it in 150ml of deionized water, then add 75ml of absolute ethanol, and at the same time add 18ml of oleic acid and 4.5ml of oleylamine into the mixture, and stir at 250rpm for 10min. Afterwards, the mixture was placed in a reactor, and reacted under anaerobic heating at 170° C. for 0.5 h. Weighed 2.25 g of trimethylammonium chloride modified chitosan and added it to the mixed liquid, and stirred at 200 rpm for 3 h to obtain a mixture A. Weigh 4.70 g of ferrous sulfate and disperse it in 150 ml of absolute ethanol, stir mechanically for 5 min at a stirring intensity of 600 rpm to obtain mixture B. Use nitrogen gas to aerate 150ml deionized water for deoxygenation treatment, weigh 2.82g of potassium borohydride and dissolve it in deionized water, add the solution into the aforementioned mixed solution con...

Embodiment 3

[0051] A preparation method of water treatment agent based on nano system:

[0052] Weigh 20g of sodium tungstate dihydrate and 10g of disodium hydrogen phosphate and dissolve it in 200ml of deionized water, then add 100ml of absolute ethanol, and at the same time add 24ml of oleic acid and 6ml of oleylamine into the mixture, and stir at 300rpm for 10min. Afterwards, the mixture was placed in a reactor, and reacted under anaerobic heating at 180° C. for 0.5 h. Weigh 4.0 g of trimethylammonium chloride-modified chitosan and add it into the mixture, and stir at 200 rpm for 3 h to obtain mixture A. Weigh 9.00 g of ferrous sulfate and disperse it in 200 ml of absolute ethanol, stir mechanically for 5 min at a stirring intensity of 800 rpm to obtain mixture B. Use nitrogen gas to aerate 200ml of deionized water for deoxygenation treatment, weigh 5.40g of potassium borohydride and dissolve it in deionized water, and add the solution into the aforementioned mixed solution containing...

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Abstract

The invention discloses a nanosystem-based water treatment agent and a preparation method thereof, and belongs to the technical field of reclaimed water treatment. The preparation method comprises thefollowing steps: winding, stretching and rearranging a prepared polyoxometallate (POM) nanocrystal sheet to convert the POM nanocrystal sheet into single-wall POM nanotubes, combining the nanotubes with modified chitosan to form a composite material, and finally assembling the prepared nano zero-valent iron into the POM nanotubes to prepare the composite agent. The prepared agent utilizes the modified nano zero-valent iron to adsorb and reduce nitrate, so the limitation of conventional zero-valent iron nitrate removal on pH and other conditions is broken through, and the phenomena of passivation, agglomeration and the like generated in the removal process are also overcome, thereby the high removal efficiency is achieved.

Description

technical field [0001] The invention relates to a water treatment agent based on a nano system and a preparation method thereof, belonging to the technical field of regenerated water treatment. Background technique [0002] At present, the phenomenon of eutrophication of water bodies is relatively common. The research results show that nitrogen pollution has a significant impact on eutrophication of water bodies, and nitrate nitrogen is one of the important reasons for eutrophication of water bodies. There are many harms caused by nitrogen pollution in water bodies. For example, excessive nitrate nitrogen increases nutrients in water bodies, promotes the vigorous growth of autotrophic microorganisms, causes water quality deterioration, and destroys the ecological environment. The health of humans and aquatic animals is threatened. ; Increased cost of water treatment, etc. Therefore, it is necessary to further improve the denitrification theory and process, and to invent a m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/70C02F101/16
CPCC02F1/705C02F2101/163
Inventor 杜凌峰吴伟吴海锁陈朋利李杰闫懂懂刘波
Owner 江苏环保产业技术研究院股份公司
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