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How do flow-through UV sterilizers achieve side-effect-free disinfection in aquaculture?

2021-04-15

How do flow-through UV sterilizers achieve side-effect-free disinfection in aquaculture?

The flow-through ultraviolet sterilizer integrates optics, microbiology, electronics, fluid mechanics, and aerodynamics. It features high efficiency, broad-spectrum effectiveness, low cost, long service life, large water throughput, and no secondary pollution. It is internationally recognized as the mainstream disinfection technology of the 21st century.

The ultraviolet sterilizer disinfects without producing any odor or noise, does not use any chemical agents, and causes no side effects on water bodies, organisms, or the surrounding environment. UV disinfection systems have low capital and operating costs; all that’s required is periodic replacement of the UV lamps and cleaning of the lamp housings, allowing for unattended operation. In recirculating aquaculture systems, where stocking densities are high and aquaculture water continuously circulates among ponds, disease transmission can easily occur. Therefore, the effective operation of disinfection equipment is crucial for the success of recirculating aquaculture systems.

The core component of a UV disinfection unit is the UV lamp, which converts electrical energy into ultraviolet light energy. The lamp is positioned at the center of the cross-section of the chamber. The principle behind the arrangement of lamps in a UV disinfection unit is to ensure that all points within the cross-section of the drinking water disinfection chamber receive roughly the same intensity of ultraviolet radiation. The straight-tube quartz low-pressure mercury UV disinfection lamp complies with the national industry standard YY/T0 160-94. All kinds of microorganisms are damaged and eventually die when exposed to ultraviolet radiation. However, every organism possesses a certain capacity for repairing such damage, and microorganisms are no exception. The repair of UV-induced damage in microorganisms by visible light is known as photoreactivation; the effective wavelength range includes visible light and near-ultraviolet light from 330 nm to 480 nm.

Relying on its strong technological capabilities, the flow-through ultraviolet sterilizer extensively incorporates advanced research findings in water treatment from both domestic and international sources, and has developed a series of UV sterilizers suitable for disinfecting and sterilizing various types of water.
 

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Open-channel UV disinfection unit: quartz sleeve and seal