Bicirculating catalytic ozone water-treatment device and method

Abstract

The invention discloses a bicirculating catalytic ozone water-treatment device which solves the problems of reduced oxidation efficiency and the like caused because fluids inside the traditional device can only flow in a unicyclic way. The bicirculating catalytic ozone water-treatment device comprises three cylinders, wherein the three cylinders are concentrically arranged and form inner and outer bicirculation with strong catalytic ozonation and weak catalytic ozonation mutually separated in space; the outer circulation area decomposes the components contained in oxidable organics inside wastewater through active carbon catalytic ozonation with low catalytic characteristic by utilizing the adsorption characteristics of active carbon; and the inner circulation area realizes that hydroxyl radicals with oxidation efficiency higher than that of ozonation are generated through ultraviolet light and TiO2 concerted catalytic ozonation and oxygenizes organic molecules which are contained in the wastewater and difficult to degrade by utilizing the hydroxyl radicals. The bicirculating catalytic ozone water-treatment device disclosed by the invention can be used for realizing the space separation of organic pollutants contained in water according to difficulty degree, thereby improving the oxidation efficiency, shortening the hydraulic retention time and reducing the ultraviolet lamp and ozone consumption. The invention also provides a method for carrying out water treatment by using the bicirculating catalytic ozone water-treatment device.

Description

technical field [0001] The invention relates to a catalytic ozone method water treatment device and method. Background technique [0002] With the deepening of water pollution control, the elimination of persistent organic pollutants discharged into water has become an important task in the field of environmental protection. As a green oxidant, ozone has been mainly used in water disinfection for nearly a hundred years, but its application in other fields has been slow. In recent years, with the reduction of the cost of ozone generating equipment and the improvement of its reliability, ozone has been widely used in the elimination of refractory organic pollutants in the water environment, but the oxidation efficiency of ozone alone for some refractory organic substances is not high. High limit its application, so the catalytic ozone method came into being and continued to develop. The applicant discloses a suspended activated carbon photocatalytic ozone water treatment dev...

AI Technical Summary

Problems solved by technology

In recent years, with the reduction of the cost of ozone generating equipment and the improvement of its reliability, ozone has been widely used in the elimination of refractory organic pollutants in the water environment, but the oxidation efficiency of ozone alone for some refractory organic substances is not high. High limit its application, so the catalytic ozone method came into being and continues to develop

The applicant discloses a suspended activated carbon photocatalytic ozone water treatment device (201020505342.6). The device adopts a single-cycle method and utilizes activated carbon adsorption, activated carbon weakly catalyzes ozone, and ultraviolet light strongly catalyzes ozone to generate hydroxyl radicals to oxidize organic pollutants in water. , to achieve the purpose of water treatment, but the strong catalytic ozone and weak catalytic ozone in the device are not separated in space, resulting in the limited oxidation and adsorption of organic matter based on activated carbon weak catalytic ozone, which increases the hydraulic retention time and increases accordingly Ozone levels and UV light depletion

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