The germicidal lamp can use the light to cause the bacteria to die immediately or not to breed the offspring, thereby achieving the purpose of sterilization, and is also one of the common aquarium equipment. So how do the fish tanks contain germicidal lamps to maximize the effect of sterilization? Let's take a look at the Jiuzheng Lighting Network!
First, the principle of germicidal lamp
The germicidal lamp belongs to a low-pressure mercury lamp. It uses two lower mercury vapor pressures to emit two ultraviolet rays that are invisible to the naked eye. There are two main spectral lines, one with a wavelength of 253.7 nm and one with a wavelength of 185 nm.
After the cells absorb ultraviolet rays, the genetic material acting on the cells, through the actinic action, the energy of the ultraviolet rays can cause the genetic material to mutate, so that the bacteria immediately die or cannot reproduce, and the sterilization effect is achieved.
Second, how to install a germicidal lamp
Usually, the germicidal lamp needs to be installed at the water outlet and before the filtration, so that it can effectively kill harmful bacteria and avoid the other beneficial bacteria being killed. Some aquarists choose to put the germicidal lamp and the water pump together to achieve sterilization. The role.
Regardless of where you place it, you should take care to avoid direct eyesight of the germicidal lamp or long-term exposure to the germicidal lamp to avoid injury.
Third, how to use germicidal lamps
1, germicidal lamps should not be used for a long time, use one to two hours a day to achieve the purpose;
2. If the medicine is taken in the aquarium, the germicidal lamp should be turned off to avoid adverse reactions between the ultraviolet rays and the drugs in the tank;
3, the use of germicidal lamps need to be used with low-efficiency motors, the water into the germicidal lamp, in order to ensure that the water can be irradiated by a longer period of germicidal lamps, thus playing a better sterilization effect.
Fourth, the use of germicidal lamps
1. Some domestically-qualified UV lamps cannot provide the remaining disinfection ability. When the treated water leaves the reactor, some microorganisms killed by ultraviolet rays will repair the damaged DNA molecules under the photoreactivation mechanism and regenerate the bacteria. Therefore, it is necessary to further study the principles and conditions of photoreactivation and determine the minimum UV intensity, time or dose to avoid photoreactivation.
2, the cleaning of the outer wall of the quartz casing is the key to operation and maintenance. When the sewage flows through the UV sterilizer, many of the inorganic impurities will precipitate and adhere to the outer wall of the casing. Especially when the content of organic matter in sewage is high, it is easier to form a fouling membrane, and microorganisms are easy to grow to form a biofilm, which will inhibit the transmission of ultraviolet rays and affect the disinfection effect. Therefore, it is necessary to develop a UV sterilizer with automatic cleaning function by using reasonable anti-fouling measures and cleaning devices according to different water quality.
3. Domestic UV lamp implements the national industry standard for straight-tube quartz ultraviolet low-pressure mercury disinfection lamp. The maximum power of the lamp is 4W, and the effective life is generally 1000-3000h, while the effective running time of imported low-pressure lamp can reach 8000~12000h. Medium voltage lamps can also reach 5000~6000h. In contrast, the use of domestic lamps will increase maintenance costs. Therefore, the development of long-life UV lamps or the introduction of foreign advanced UV lamp production technologies is an urgent problem to be solved.
4. In the tendering of the ultraviolet disinfection system of China's sewage plant, some sewage plants have deepened the color of the discharged sewage due to the introduction of a large amount of industrial sewage, but the UV transmittance parameters of the sewage in the bidding documents are still using the values ​​provided by foreign countries, resulting in domestic The actual situation of sewage is very different, which will meet the disinfection requirements for the operation of UV equipment in the future, leaving an insurmountable obstacle.
After reading the above instructions on the use of germicidal lamps, do you have more understanding of the use of germicidal lamps? To learn more about germicidal lamps, please continue to pay attention to lighting lighting
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