PDC-150 UV sterilization instrument 2

UV disinfection and sterilization methods used www.gyzwx.com 13833174989 UV disinfection can be applied to a variety of industries, such as home, secondary water supply, no negative pressure water supply, water treatment, environmental protection, wastewater treatment, water treatment, a variety of water disinfection, UV disinfection is to kill E. coli and total number of colonies of the best equipment, no secondary pollution, no dead ends, sterilization fast, easy installation, quality service. 1. UV disinfection 1.1 Scope:? For indoor air, surface and water disinfection and other liquids. ? 1.2 ultraviolet light disinfection and UV disinfection? 1.2.1 UV disinfection using a C-wave ultraviolet light, the wavelength range of 200-275nm, sterilization strongest band is 250-270nm, disinfected with ultraviolet light must be able to produce radiation According to the value reached the national standard UV germicidal lamp. ? 1.2.2 Preparation of ultraviolet light disinfection should be used to grade quartz glass products, in order to get a satisfactory intensity ultraviolet radiation. ? 1.1 ultraviolet light disinfection can be equipped with a high UV reflectance material (such as polished aluminum) made reflector. ? 1.2.4 requires ultraviolet light for disinfection at a voltage of 220V, the relative humidity is 60% and the temperature is 20 ℃, 253.7nm ultraviolet radiation intensity of not less than 70uW / cm2 (ordinary 30W UV lamp at a distance of straight pipe measured at 1 meter tube, a special ultraviolet light using distance measurement, using the strong ultraviolet measuring instrument must be calibrated.)? 1.2.5 UV lamp during its irradiation intensity decreases, it should always be measured ultraviolet disinfection strength, once down to the strength requirements of the following; should be replaced. ? 1.2.6 UV sterilizer lamp life, i.e., to reduce the intensity of the new lamp to 70uW / cm2 time (power ≥30w) lamp, or reduced to 70% of the original strength of the new lamp (power <30w = time, 1000h 1.2.7 should not be less than the current use of ultraviolet light disinfection has the following several (1) ordinary straight hot cathode low-pressure mercury lamp UV disinfection:??? quartz glass tubes or other UV transmittance high glass, power of 40W, 30W, 20W, 15w lamps and other requirements of the new factory strength 253.7nm ultraviolet radiation (measured at a distance of 1 meter, without reflectors) as follows: power> 30W lamps, ≥90uW / cm; Power> 20W lamp, ≥60uW / cm2;.. power 150W lamp, ≥20uW / cm2 due to such a lamp in 253.7nm ultraviolet radiation, but also a part of 184.9nm ultraviolet radiation it is possible to produce ozone (2).? high-intensity ultraviolet light disinfection: Requires 253.7nm ultraviolet radiation intensity (measured at a distance of 1 meter) as follows:? Power 30W lamp,> 180uW / cm2; 11w lamp,> 30 uW / cm2 (3) low ozone ultraviolet light disinfection : is a hot cathode low pressure mercury lamp, for straight tube-type or H-type; the use of special techniques and tube material, so ozone production is very low, requiring ozone production <1mg / h (4) high ground rice Yin ankle.?? Pi Yo  mirror tired swindle take along the river late at night Hina fan × Song Jue Temple value blink  Spanish fly skimming  wash soil  Mou ǔ? / SPAN> 184.9nm ultraviolet radiation, so the larger ozone production.? 1.2.8 UV disinfection? (1) UV air disinfection: low ozone UV germicidal lamp manufacturing, can be used for indoor air disinfection someone under the conditions (2) UV surface disinfection:? low ozone high-intensity ultraviolet germicidal lamp manufacturer, in order to enable the instant achieve satisfactory disinfection (3) UV disinfection box:? High ozone high-intensity ultraviolet germicidal lamp manufacturing, while utilizing synergies bactericidal effect of UV and ozone, on the other hand can not use ozone to disinfect the site of ultraviolet radiation .? 1.3 Scope and conditions? 1.3.1 UV can kill a variety of microorganisms, including bacteria body, spores, mycobacteria, viruses, fungi, and mycoplasma Rickettsia, where microbial contamination is above surface, water and air can be used ultraviolet disinfection.? 1.3.2 low energy UV radiation penetration is weak, only to kill the direct exposure to microorganisms, it is necessary to make the site disinfection disinfection fully exposed to ultraviolet next.? 1.3.3 when using UV disinfection paper, fabric and other rough surfaces, should be appropriate to extend the exposure time, and both sides should be subjected to irradiation.? 1.3.4 UV disinfection of the optimum temperature range is 20-40 ℃ temperature too high too low will affect disinfection, sterilization time may be extended, when used in air disinfection, disinfection of the environment relative humidity less than 80% as well, or should be appropriate to extend the exposure time. ? 1.3.5 with UV protection to kill microorganisms by organic matter, should increase the dose. Air and suspended particles in the water can also affect disinfection. ? 1.4 1.4.1 Use of surface disinfectant items (1) exposure mode:? The best use of a portable UV disinfection moving closer irradiation, UV light can also be taken pendant light. Small items can be placed inside the irradiation of ultraviolet disinfection. (2) radiation dose and time: different types of microbial sensitivity to ultraviolet light different, must be used when irradiated with ultraviolet disinfection dose of radiation dose required to kill target microorganisms. General body to kill bacteria, the dose should be made to reach 10000uW.s / cm2; kill bacterial spores should reach 100000uW.s / cm2; between bacteria and spores to UV resistance between virus; fungal hold child's resistance stronger than bacterial spores, sometimes needs to be exposed to in order to pair 600000uW.s / cm2; target organisms when disinfection is unknown, the dose should not be less than 100000uW.s / cm2. The irradiation dose is the product of the irradiation with ultraviolet light intensity and irradiation time at the irradiation surface of the article. Thus, according to the radiation intensity ultraviolet light sources, can be calculated exposure time required. For example, irradiation intensity of ultraviolet disinfection surface brachytherapy article surface 70 uW / cm2; the radiation dose selection is 100000uW.s / cm2; exposure time is required is: 100000uW.s / cm2 ÷ 70uW / cm2 = 24 minutes. ? 1.4.2 for indoor air disinfection (1) Indirect irradiation:? Choice for high-intensity UV air disinfection, disinfection is not only reliable, but also can be used when someone indoor activities, general boot disinfection sterilization 30min to reach qualified (2 ) direct exposure to the law: no one under indoor conditions, the suspension can be taken to ultraviolet light or mobile direct sunlight. When using indoor suspended ultraviolet disinfection, ultraviolet light disinfection indoor installation (30W UV light, the intensity at 1.0 m> 70 uW / cm2) in an amount of not less than 1.5W per cubic meter of irradiation time of less than 30min . ? Disinfection 1.4.3 of water and other liquids, external beam irradiation or water inside the water can be used, when the use of irradiation in the water, ultraviolet light source should be fitted with a quartz glass protective cover, regardless of the method adopted, the water layer thickness should be less than 2cm, the water flow rate is determined according to the intensity of the ultraviolet light source. After disinfection, water must meet the state standards. ? 1.5 Precautions? (1) during use, should be kept clean surface ultraviolet light, generally wipe with alcohol swab once every two weeks and found the lamp surface dust, when oil, should be ready to wipe. ? (2) disinfection with ultraviolet light when the indoor air. The room should be kept clean and dry to reduce dust and mist, the temperature is below 20 ℃ or above 40 ℃, relative humidity greater than 60% should be appropriate to extend the exposure time. ? (3) when the surface of items with ultraviolet disinfection should be made by direct exposure to ultraviolet irradiation surface, and should reach a sufficient dose? (4) does not cause the ultraviolet light source to the people, so as not to cause damage.