Self-gravity hydrodynamic cavitation and ultraviolet radiation combined ballast water treatment device

Abstract

The invention relates to a self-gravity hydrodynamic cavitation and ultraviolet radiation combined ballast water treatment device. A water level control chamber is a cavity; a water inlet pipe A is arranged on the wall of one side of the water level control chamber, one end of the water inlet pipe A is arranged outside the water level control chamber, and the other end of the water inlet pipe A extends into the water level control chamber; the water inlet pipe A is connected with one end of a water inlet pipe B, and the other end of the water inlet pipe B extends into the water level control chamber; the part, extending into the water level control chamber, of the water inlet pipe B is a hose pipe. Compared with single ultraviolet inactivation and single hydraulic cavitation inactivation,the self-gravity hydrodynamic cavitation and ultraviolet radiation combined ballast water treatment device has higher inactivation efficiency. The device is small, thus being suitable for the limitedspace characteristic on a ship. The device adapts to the working conditions of different water quality and water quantities, meets the environmental protection requirements, and is high in work reliability, moderate in maintenance amount and small in floor space.

Description

technical field [0001] The invention relates to a device for removing microorganisms in ship's ballast water through the combined technology of hydraulic cavitation and ultraviolet radiation. Background technique [0002] At present, there are more than a dozen ballast water treatment technologies, mainly including mechanical treatment, physical treatment and chemical treatment. Among them, ultraviolet irradiation treatment technology is a kind of physical treatment method, which is very effective for inactivating marine bacteria and microorganisms. However, in practical applications, the effect of ultraviolet radiation is easily affected by external factors. For example, ultraviolet light has a short wavelength, low diffraction performance, and weak penetrating power, which can only kill directly irradiated microorganisms. Therefore, microorganisms and algae must be fully exposed to ultraviolet rays during disinfection. In addition, many microorganisms after being irradia...

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Problems solved by technology

The existing sterilization technology based on this principle generally uses a Venturi tube or an orifice to cause a sudden change in water flow velocity and pr...

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