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OK. Scope of application.
1. Ultraviolet rays can kill various microorganisms, including bacterial propagules, spores, mycobacteria, viruses, fungi, and rickettsia.
and mycoplasma, all surfaces contaminated by the above microorganisms, water and air can be disinfected with ultraviolet light.
2. Ultraviolet irradiation energy is low, penetration is weak, and it can only kill directly irradiated microorganisms, so the disinfection part must be fully exposed to ultraviolet rays during disinfection.
3. When disinfecting rough surfaces such as paper and fabric with ultraviolet rays, the irradiation time should be appropriately extended, and both sides should be irradiated.
4. The most suitable temperature range for ultraviolet disinfection is 20 40, and the temperature is too high or too low will affect the disinfection effect, and the disinfection time can be appropriately extended, and the relative humidity of the disinfection environment is used for air disinfection.
Less than 80 is better, otherwise the irradiation time should be appropriately extended.
5. When using ultraviolet rays to kill microorganisms protected by organic matter, the irradiation dose should be increased. Suspended particles in the air and water can also affect the effectiveness of disinfection.
1) Disinfection of the surface of the article.
1. Irradiation method: It is best to use a portable ultraviolet disinfection lamp.
Move irradiation at close range, and ultraviolet lamps can also be used.
Suspended irradiation. For small items, ultraviolet disinfection boxes can be irradiated.
2. Irradiation dose and time: Different types of microorganisms have different sensitivities to ultraviolet rays, and the irradiation dose must be used to achieve the irradiation dose required to kill the target microorganisms when disinfecting with ultraviolet light.
2) Disinfection of indoor air.
1. Indirect irradiation method: the first choice is high-intensity ultraviolet air sterilizer, which not only has a reliable disinfection effect, but also can be used when there are people in the room, and it can be disinfected for 30min.
2. Direct irradiation method: under the condition of indoor unmanned, ultraviolet lamps can be used.
Suspended or mobile direct irradiation.
3) The disinfection of water and other liquids can be irradiated in water or outside water, and when the water irradiation method is used, the ultraviolet light source should be equipped with quartz glass.
The protective cover, regardless of the method, should be less than 2cm thick, and the water flow velocity should be determined according to the intensity of the UV light source. After disinfection, the water must meet the standards set by the state.
Precautions. 1. During use, the surface of the ultraviolet lamp should be kept clean, wiped with alcohol gauze once a week on Monday and Thursday, and wiped at any time when dust and oil stains are found on the surface of the lamp.
2. When disinfecting the surface of articles with ultraviolet rays, the irradiated surface should be directly irradiated by ultraviolet rays, and sufficient irradiation dose should be reached.
3. The ultraviolet intensity meter should be calibrated at least once a year. The service life of the ultraviolet disinfection lamp should not be less than 1000h.
4. Do not let the ultraviolet light source irradiate people, so as not to cause damage.
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OK. The ultraviolet disinfection lamp uses the energy of ultraviolet photons to penetrate the cell membrane of microorganisms, destroy the DNA structure of various germs, bacteria, parasites and other pathogens, destroy their nucleic acid molecular bonds, make them inactive and die, so as to achieve the effect of disinfection and sterilization. The ultraviolet disinfection lamp is 20 times that of the sun's ultraviolet rays at noon in summer, and it can be disinfected quickly.
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UV disinfection does not leave harmful substances behind as chemical disinfection.
However, ultraviolet light does not guarantee that all harmful bacteria and viruses will be killed very cleanly.
At the same time, it should not let the human body be directly irradiated by ultraviolet rays.
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1. Ultraviolet disinfection lamp.
It cannot be directly irradiated to the human body and eyes, otherwise it is easy to cause electro-optic ophthalmia and damage.
2. Because short-wave ultraviolet rays cannot penetrate the glass, wearing glasses can avoid too much filial piety, and try to avoid the presence of people when entering the sedan car and traveling late for irradiation and disinfection.
3. If you don't close your eyes and be careful, the general situation is not a big deal, just like being exposed to the sun.
Burns like severe eye drops can be dropped.
or human milk to aid in recovery.
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At present, the ultraviolet disinfection lamp used in China has high irradiation intensity and long-distance disinfection and sterilization effect. When using, it must be used in an unmanned state, and avoid long-term exposure to the naked eye and ** of people. The radiation intensity of the UV lamp can be monitored.
To avoid the damage of ultraviolet rays to the human body, first of all, you should avoid direct sunlight at noon in summer, avoid outdoor activities between 11 a.m. and 3 p.m., and use sunscreen skin care products and protective equipment such as sun hats, sunglasses, and parasols when you go out. Secondly, sunbathing should be done gradually, starting shortly, gradually extending the sun exposure time to gradually increase the tolerance to light, but it is best not to last more than 2 hours, and choose between 9 and 1l in the morning or 4 to 6 in the afternoon. For sunbathers, it's also extremely important to take simple precautions, especially to protect your eyes.
Medical studies have confirmed that more sun exposure increases the risk of cataracts in the eyes, and 1 hour of sun exposure per day increases the probability of cataracts by 10% in one year. Daily sun protection is also very important, you should choose a better sunscreen according to your ** and use, and renew it every 2 to 3 years.
When using ultraviolet lamps to irradiate and disinfect viruses, people should be forbidden to be present to avoid injuries due to direct ultraviolet rays on people's eyes and **.
Ultraviolet rays have no penetration, straight line transmission, and there are three sterilization blind spots: 1. It can only sterilize and disinfect the upper surface of the object (food), but cannot sterilize and disinfect the lower surface of the object; 2. When multiple objects overlap, the surface of the overlapping part of the object cannot be sterilized and disinfected; 3. Only the outer surface of the object can be sterilized and disinfected, but not the inside of the object! In other words, places that cannot be irradiated by ultraviolet light (invisible light) cannot play a role in sterilization and disinfection.
Due to the above characteristics, the disinfection lamp in your unit is inside the ceiling, that is, the disinfection lamp only kills the bacteria inside the ceiling. Occasionally, some ultraviolet vents radiate to the outside world, which greatly reduces the danger, which is much less harmful to the human body than direct exposure.
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Zhonggantang black wolfberry allows me to stay away from sub-healthy groups and return to the healthy world, thank you very much!
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1. Do not irradiate the ultraviolet light source to people, so as not to cause damage. Ultraviolet rays have the most obvious effects on the human body and the eyes. The human body will be exposed to a short period of radiation and will produce **red, itchy, allergic pimples; Long-term irradiation will cause serious damage to the tissues, and adequate dose of irradiation will even cause cancer.
Ultraviolet radiation to the human eye is also very harmful, short-term large dose of radiation will make the eyes red, swollen, tearful, unable to open the eyes, long-term exposure to ultraviolet radiation will lead to cataracts and even blindness.
2. When disinfecting the surface of articles with ultraviolet rays, the irradiated surface should be directly irradiated by ultraviolet rays, and sufficient irradiation dose should be achieved. Due to the straight line propagation of light, it is reflected, penetrated, or absorbed when it is blocked by an object. Ultraviolet disinfection requires the wattage of ultraviolet lamps per cubic meter of space, and the irradiation time is generally 30 to 60 minutes.
It is also stipulated that the strength of ultraviolet clothing shall not be less than 70ūw cm2, otherwise the sterilization effect is not good or ineffective, and the purpose of disinfection cannot be achieved.
3. The suitable temperature range for ultraviolet disinfection is 20 40, and the temperature is too high or too low will affect the disinfection effect. When disinfecting indoor air with ultraviolet light, the room should be kept clean and dry, reduce dust and water mist, and the temperature should be lower than 20 or higher than 40, and the irradiation time should be appropriately extended when the relative humidity is greater than 60%.
4. Attention should also be paid to the wiping and cleaning of lamps in the application. When the new lamp is used, you can choose to wipe the lamp with 75% alcohol gauze to remove the pollution of the lamp from dust and oil stains. During use, wipe and clean the lamp so as not to affect the purple transmittance and radiation intensity.
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Ultraviolet disinfection lampsIt cannot be directly irradiated to the human body's ** and eyes, otherwise it is easy to cause damage to the human body. Since UVA light cannot penetrate glass, wearing glasses can avoid too much damage, and try to avoid the presence of people when disinfecting with radiation.
Ultraviolet disinfection lamps are also known as ultraviolet source germicidal lamps.
Ultraviolet fluorescent lamps.
A kind of lamp that uses the sterilization effect of ultraviolet rays to sterilize and disinfect hail. Ultraviolet disinfection lamps radiate ultraviolet light with a wavelength of outward.
This band of ultraviolet light has the strongest sterilization ability and can be used for disinfection and sterilization of water, air, clothing, etc. The specifications of ultraviolet disinfection lamps commonly used in pig farms are 15W, 20W, 30W and 40W, and the voltage is 220V, which is mainly used for disinfection and sterilization of personnel, and is generally installed in disinfection locker rooms, veterinary rooms and laboratories.
Functional use of ultraviolet lamp
1. Application in surface sterilization, UV surface sterilization device is widely used in food, electronics, semiconductors, and liquid crystal displays.
Plasma TV, crystal oscillator, precision device, chemical industry, medicine, health care, biology, beverage, agriculture and other fields.
The UV light source irradiates the surface of food, materials and other materials, which has a fast, efficient, and non-polluting sterilization effect, so as to maintain the high quality of the product. Compared with the traditional sterilization method, surface sterilization has the characteristics of fast sterilization speed, continuous processing and batch processing, simple operation, environmental protection and no secondary pollution.
2. Application in water treatment. There are two methods of using ultraviolet germicidal lamps for water treatment: immersion type and overflow type, and the ultraviolet lamp is directly put into the water, which is called immersion type; The ultraviolet lamp is used in a casing, which is called an overflow type.
The main method is the overcurrent method. The working principle of the overflow type equipment is that the water flow of a certain flow rate generated by the pressure of the water pump flows through the periphery of the quartz casing that can transmit ultraviolet rays, and is carried out by the ultraviolet lamp.
Ultraviolet rays are generated to disinfect and sterilize water. It is characterized by a very fast flow rate of water, which is generally no more than 1s when the quartz jacket flows, so the ultraviolet intensity of the germicidal lamp is required.
It's very high.
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Summary. Theoretically, disinfectant and UV disinfection lamps should be used at the same time, but in practice, it seems that they are not necessary. Because the disinfectants we usually use, such as 84 disinfectant and peracetic acid, are highly effective disinfectants, if used correctly, they can effectively kill bacteria, viruses and other pathogenic microorganisms on the treatment object, and there is no need to use other disinfection methods; At the same time, the use of ultraviolet lamps is also limited by some factors, such as the weak penetration of ultraviolet rays, and the effect is not good under high humidity conditions.
Theoretically, disinfectant and UV disinfection lamps should be used at the same time, but in practice, it seems that they are not necessary. Because the disinfectants we usually use, such as 84 disinfectant and peracetic acid, are highly effective disinfectants, if used correctly, they can effectively kill the bacteria on the treatment object, pathogens such as spring poison and other pathogens and microorganisms, and there is no need to use other disinfection methods; At the same time, the use of ultraviolet lamps is also limited by some factors, such as the weak penetration of ultraviolet rays, and the effect is not good under high humidity conditions.
Are you in the medical profession? Well.
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1. The ultraviolet disinfection lamp cannot directly irradiate the human body and eyes, otherwise it is easy to cause electro-optical ophthalmia and damage. Bi Tong.
2. Because short-wave ultraviolet rays cannot burn through the glass, wearing glasses can avoid too much damage, and try to avoid the presence of people when irradiating and disinfection.
3. If you accidentally hurt your eye, it is generally not a big deal, just like being burned by the sun, you can use eye drops or human milk to help you recover.