Method for generating hydroxyl radical and removing organic pollutants in water by utilizing an organic membrane

摘要

The present invention provides a method for generating hydroxyl radicals and removing organic pollutants in water by utilizing an organic membrane. The inventive method generates hydroxyl radicals by adopting a nitrocellulose membrane as a photocatalytic material, placing the nitrocellulose membrane in water, illuminating with the sun or a sunlamp having a wavelength above 280 nm as a light source, and causing the nitrocellulose membrane to undergo a photochemical reaction at the membrane surface, and the generation rate of hydroxyl radicals can be achieved by adjusting the surface area of the membrane and a light intensity. The generated hydroxyl radicals can remove phenol, bisphenol A, thiamphenicol and other typical organic pollutants in water very well. Such method for generating hydroxyl radicals is simple, economical and efficient, and does not need to introduce any hydroxyl radicals precursor into the aqueous solution; and hydroxyl radical are generated on the surface of a solid phase membrane, bring no secondary pollution, and can be applied to sewage treatment and other fields.