Ultraviolet light coupled titanium dioxide sterilization and disinfection device and method thereof

Abstract

The invention discloses an ultraviolet light coupled titanium dioxide sterilization and disinfection device. The ultraviolet light coupled titanium dioxide sterilization and disinfection device is characterized by comprising a reactor, wherein the reactor is vertically arranged; a water outlet and a water inlet are respectively formed in the upper part and the lower part of the reactor; a nano titanium dioxide coating is arranged on the inner wall of the reactor; an ultraviolet light lamp is arranged in the reactor; the reactor extends along an axis direction of the reactor. According to the ultraviolet light coupled titanium dioxide sterilization and disinfection device, through application of the synergistic actions of ultraviolet light and titanium dioxide, the sterilization and disinfection efficiency can be effectively improved; the problem that the shadow area is incompletely disinfected can be solved; the toxic compounds in the viruses, which cannot be decomposed by the ultraviolet light, can be directly decomposed into carbon dioxide and water.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to an ultraviolet light-coupled titanium dioxide sterilization and disinfection device for treating hospital wastewater, and a method for using the device to treat wastewater. Background technique [0002] Hospital wastewater (or sewage) refers to the sewage discharged from the hospital to the natural environment or urban pipelines. Hospital wastewater contains infectious parasitic eggs, pathogenic bacteria, viruses and other pathogenic microorganisms, especially the sewage discharged from infectious disease wards such as hepatitis, which must be disinfected be discharged afterwards. At present, the commonly used disinfection methods of hospital wastewater include ozone disinfection, ultraviolet light disinfection and chlorine disinfection. These current treatment methods all have their own limitations. The cost of ozone disinfection infrastructure is high, and the cos...

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Problems solved by technology

These current treatment methods all have their own limitations. The cost of ozone disinfection infrastructure is high, and the cost per ton of water is high; the way of chlorination disinfection has a certain oxidation effect on humus and hydrocarbon organic substances in hospital wastewater, and produces more carcinogens. Mutant halogenated hydrocarbon organics, so most hospitals use ultraviolet light to sterilize and disinfect tail water when choosing disinfection methods

However, there are certain deficiencies in the ultraviolet light sterilization and disinfection devices currently on the market. Ultraviolet light sterilization changes and destroys the organizational structure (DNA) of microorganisms through ultraviolet rays to cause structural mutations, and germs lose their ability to reproduce and reproduce to achieve the purpose of disinfection and sterilization. UV light doesn't dispose of toxic compounds inside germs

At the same time, when the UV cabinet is installed, it is mostly installed horizontally. As a result, during the long-term operation, the SS in the water will accumulate and scale on the surface of the UV lamp tube under the action of gravity, which will affect the projection of the UV lamp. Affect the overall sterilization and disinfection effect

In addition, the traditional ultraviolet light sterilization and disinfection equipment adopts a submerged box structure, which is difficult to achieve uniform radiation in the entire treatment space, and there are shadow areas of irradiation, which makes the sterilization effect incomplete

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