An ultraviolet disinfection device with automatic start-stop and control of irradiation intensity

Abstract

The invention discloses an automatic start-stop and exposure intensity control ultraviolet disinfection device. The disinfection device mainly comprises an electromagnetic flowmeter, a water quality instrument, an ultraviolet sterilizer, ultraviolet lamp tubes, a controller, a water inlet pipe, a sensor and a water outlet pipe. Water flows through the water inlet pipe to penetrate through the electromagnetic flowmeter and then flows into the ultraviolet sterilizer through the water quality instrument, the ultraviolet sterilizer includes the ultraviolet lamp tubes, the sensor is installed on the water outlet pipe, and the controller is connected with the electromagnetic flowmeter and the sensor through leads. The disinfection device can achieve automatic ultraviolet sterilizer starting and stopping functions when water flows and stops, meanwhile can also control ultraviolet light exposure intensity according to water flow and water quality characteristics, accordingly can more intelligently water disinfection and can further play an energy-saving effect.

Description

technical field [0001] The invention relates to the technical field of disinfection of secondary water supply or reused water, in particular to an ultraviolet disinfection device that automatically starts and stops and controls irradiation intensity. Background technique [0002] Ultraviolet disinfection is to use ultraviolet rays of appropriate wavelengths to destroy the molecular structure of DNA or RNA in microbial cells, causing growth cell death and regenerative cell death, and achieving the effect of sterilization and disinfection. Using specially designed high-efficiency, high-intensity and long-life UVC band ultraviolet light to irradiate flowing water, all kinds of bacteria, viruses, parasites, algae and other pathogens in the water can be directly killed. Ultraviolet rays mainly kill microorganisms through radiation damage to microorganisms in water and the function of destroying nucleic acids, so as to achieve the purpose of disinfection. Ultraviolet disinfection...

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Problems solved by technology

These cost estimates do not include possible additional costs for removal of disinfection by-products and Cryptosporidium cysts when using non-UV disinfection processes

In addition, there are analytical data showing that the investment and operating costs of ultraviolet disinfection are lower than that of chlorine disinfection, and the disinfection cost is about half of that of chlorine, but the difference decreases with the expansion of water treatment scale.

[0004] At present, ultraviolet disinfection is limited to small equipment, and the start-stop and control of the irradiation intensity of the ultraviolet sterilizer used in the disinfection equipment in the secondary water supply system of daily water are all controlled manually. Often when the user needs water supply, the device is not yet available. Open, when the user stops the water supply, the device is still in the open state, and the irradiation intensity of the ultraviolet disinfection lamp cannot be controlled according to the size of the water flow and the water quality, resulting in a waste of resources and a certain impact on the loss of the equipment

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