Apparatus for photoelectric catalytic oxidation of subaqueous organics by solar energy

Abstract

The invention discloses a solar device used for photoelectrocatalysis oxidation of organics in water, which pertains to the field of advanced photocatalytic oxidation technology for water treatment in environmental chemical engineering, more particularly relates to a photoelectrocatalysis organic water treatment device which can directly utilize the ultraviolet light and the visible light in the sunlight. The device comprises a shell body 1, a solar photocatalytic anode 2, a carbon-material cathode 3, a Ti-based stibium-doped tin dioxide electrode 4 and deflection baffles 10. A plurality of the parallel deflection baffles 10 arranged in the device cause the reaction device to have the functions of a plate-column water treatment device, and the number of the baffles can be designed, calculated and determined according to the waste water entrance depth and the requirements on the quality of outflow water. The device has simple structure, directly utilizes the clean and renewable solar energy and clean electrical energy, is especially suitable for in-water reaction rate control and the treatment of organics which are hard to be oxidized, has high oxidation efficiency and is environment-friendly.

Description

A solar photoelectric catalytic oxidation device for organic matter in water technical field The invention relates to a device for solar photocatalytic oxidation of organic matter in water, which belongs to the technical field of environmental chemical photocatalytic oxidation water treatment. Specifically, it discloses a photoelectric catalytic organic water treatment device that can utilize ultraviolet and visible light in sunlight. Background technique Since the middle of the 20th century, with the rapid development of industry, a large number of non-living organic substances that did not exist in nature have been produced, most of which are persistent toxic organic substances that are difficult to degrade, posing a great threat to the ecological environment and human survival. Photocatalytic technology is one of the effective methods to deal with persistent toxic organic pollutants in water, among which the photocatalytic degradation of organic pollutants using TiO2 is...

AI Technical Summary

Problems solved by technology

The purpose of a device for solar photocatalytic oxidation of organic matter in water of the present invention is to fundamentally solve the problems of environmental pollution and energy shortage, from the perspective of scientific utilization of solar energy, based on the existing single semiconductor oxide bandgap structure and photocatalytic Performance, discloses a nanocomposite semiconductor oxide photocatalytic material electrode that can fully utilize solar energy - solar photocatalytic anode, through the reasonable collocation of various semiconductor oxide energy band structures with different band gaps (2.0-3.5eV), not only absorbs Ultraviolet and visible light in sunlight, and form a multi-photon activation mechanism, scientifically and optimize the use of sunlight, make full use of the surface states and oxygen vacancies formed between compound semiconductors to promote the rapid separation of electrons and holes, and realize the charge transfer of the system The technical scheme of the solar photoelectric catalytic oxidation device for organic matter in water with double improvement in rate and charge transfer flux, which can directly utilize ultraviolet and visible light in sunlight and has weather resistance

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