Powder activated carbon liquid in-situ regeneration method based on vacuum ultraviolet/chlorine/ultrasonic coupling effect

Abstract

The invention discloses a powder activated carbon liquid in-situ regeneration method based on a vacuum ultraviolet / chlorine / ultrasonic coupling effect, and belongs to the technical field of water treatment and pollution removal. According to the method, vacuum ultraviolet rays, chlorine and ultrasonic waves are subjected to a synergistic effect, and the powder activated carbon liquid-state in-situ regeneration method based on the vacuum ultraviolet ray / chlorine / ultrasonic wave coupling effect is constructed. The method comprises the following steps: adding a regeneration solution into a saturated powdered activated carbon concentrated solution to form a powdered activated carbon mixed solution, then adding a chlorine solution, carrying out vacuum ultraviolet irradiation, respectively and successively conducting treatment or simultaneously conducting treatment for a certain time under the action of ultrasonic waves with certain power and frequency, and directly recycling the separated and cleaned wet-type regenerated powdered activated carbon. The vacuum ultraviolet / chlorine / ultrasonic coupling can form multiple synergistic effects, so that the desorption, migration and degradation efficiency of pollutants in the powdered activated carbon is enhanced. The powdered activated carbon can be directly regenerated and recycled in a liquid phase, the regeneration effect is obviously improved, few regeneration facilities are added, the feasibility is high, and the application potential is large.

Description

technical field [0001] The invention belongs to the technical field of water treatment and pollution removal, and in particular relates to a method for regenerating saturated powder activated carbon Background technique [0002] Powdered activated carbon has the characteristics of developed pore structure and large specific surface area, and can effectively adsorb various pollutants in water. It has been widely used in the field of water treatment and pollution removal. Due to the large amount of powdered activated carbon used and the high cost of use, the regeneration and reuse of powdered activated carbon has significant economic benefits. The thermal regeneration method is currently the most widely used and mature activated carbon regeneration method in the industrial field, but it requires professional regeneration manufacturers and regeneration equipment, and there are problems such as high energy consumption, large carbon loss, and secondary pollution of tail gas. It i...

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Problems solved by technology

[0005] The present invention provides a liquid in-situ regeneration method of powdered activated carbon based on vacuum ultraviolet light / chlorine / ultrasonic coupling, and constructs a liquid in-situ regeneration method of powdered activated carbon based on vacuum ultraviolet light / chlorine / ultrasonic coupling to solve the problem of saturated powder activated carbon. The thermal regeneration process requires professional regeneration manufacturers, dehydration and drying, high energy consumption, large carbon loss, secondary pollution and other problems, which significantly improve the efficiency of vacuum ultraviolet rays, chlorine, and ultrasonic regeneration alone.