Nanosystem-based water treatment agent and preparation method thereof

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...

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