Method for preparing silver ion modified photocatalysis biological filter materials

Abstract

The invention relates to a method for preparing silver ion modified photocatalysis biological filter materials, and belongs to the technical field of wastewater treatment. The method includes preparing titanium dioxide nano-tube materials from tetra-butyl carbonate; carrying out electrolysis by the aid of silver rods, platinum rods and sodium bicarbonate solution to generate silver carbonate powder; mixing the silver carbonate powder and the titanium dioxide nano-tube materials with one another to obtain first mixtures; adding polypropylene materials into the first mixtures, mixing the polypropylene materials and the first mixtures with one another to obtain second mixtures, and extruding the second mixtures; carrying out biofilm culturing treatment on extruded products to obtain the silver ion modified photocatalysis biological filter materials. The silver rods are used as positive electrodes, the platinum rods are used as negative electrodes, and the sodium bicarbonate solution is used as electrolyte solution. The method has the advantages that heavy metal ions are doped, accordingly, light energy can be easily absorbed by nanometer titanium dioxide under photocatalytic effects,electron transition can be carried out to generate electron-hole pairs, and carbon dioxide and water can be ultimately generated; light rays can be reflected to be repeatedly in contact with the surfaces of the silver ion modified photocatalysis biological filter materials when transmitted into the surfaces of the silver ion modified photocatalysis biological filter materials, and accordingly thephotocatalytic effects can be enhanced; ammonia nitrogen and organic matter components in water can be removed by the aid of vital metabolic activities of microorganisms attached onto fillers, and themethod has a broad application prospect.

Description

Technical field [0001] The invention relates to a preparation method of a silver ion modified photocatalytic biological filter material, which belongs to the technical field of wastewater treatment. Background technique [0002] With the rapid development of China's economy and the acceleration of industrialization and urbanization, the problems of environmental pollution and resource shortages have become increasingly apparent. Sewage contains various pollutants that are harmful to the land and the human body. People use various methods to treat the sewage. Purifying the environment has become one of the contents that people need to solve urgently. [0003] At present, there are many treatment methods for industrial wastewater and urban domestic sewage, such as chemical redox method, chemical precipitation method, membrane separation method, biochemical method, and biochemical method is divided into activated sludge method and biofilm method. At present, the most widely used and ...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a method for preparing a silver ion-modified photocatalytic biological filter material in view of the defects that the current conventional biological filter material has poor removal effect on organic pollutants in micro-polluted water bodies and low photocatalytic efficiency

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