UV disinfection process in water treatment applications
UV disinfection process in water treatment applications
Use the UV kill aquatic bacteria infectious diseases has been widely recognized advantages. In fact, the industrial sector was among the first to use one of the pioneers of this technology. Today, almost all industrial UV technology will be applied to water treatment systems, including food and beverage, pharmaceutical, cosmetics, health products, manufacturing, high-tech industry and so on. UV disinfection is in the field of water and wastewater main application. At the same time, the industry also applied this technique to many other areas, including the elimination of ozone and reduce total organic carbon (TOC), liquid sugar, disinfection, chlorine degradation, surface and air disinfection, and cooling towers. This will be a number of UV applications in the industrial sector a brief overview.
Bactericidal
UV sterilization is to use 254 nm wavelength ultraviolet light. The wavelength of UV light, even in trace amounts of ultraviolet light projected doses, can destroy the life of a cell core?? DNA, thus preventing cell regeneration, the loss of regenerative capacity to become harmless bacteria to achieve the sterilization effect. Like all other UV applications technologies, the scale of this system depends on the intensity of ultraviolet radiation (exposure device strength and power) and the contact time (water, liquid, or air exposure to ultraviolet light, the length of time).
Elimination of Ozone
UV sterilization is to use 254 nm wavelength ultraviolet light. The wavelength of UV light, even in trace amounts of ultraviolet light projected doses, can destroy the life of a cell core?? DNA, thus preventing cell regeneration, the loss of regenerative capacity to become harmless bacteria to achieve the sterilization effect. Like all other UV applications technologies, the scale of this system depends on the intensity of ultraviolet radiation (exposure device strength and power) and the contact time (water, liquid, or air exposure to ultraviolet light, the length of time).
Reduce the total organic carbon
In many high-tech and laboratory devices, organic matter will hinder the production of high purity water. There are many ways to get rid of organic matter from the water, more commonly used methods include the use of activated carbon and reverse osmosis. Shorter wavelength ultraviolet (185 nm) can effectively reduce the total organic carbon (the value of noting that these devices also generate 254 nm radiation of ultraviolet wavelengths, it can also be disinfected). Shorter UV wavelengths have more energy, it can decompose organic matter. UV oxidation of organic reactions, while very complex, its main principle is very strong by generating free hydrogen oxidation, the oxidation of organic matter into water and carbon dioxide. And ozone removal systems, such degradation of organic carbon in the UV system, UV disinfection system of radioactivity is the traditional three to four times.
Disinfection liquid sugar
Most food and beverage manufacturers have a lot of use of liquid sugar. Since sugar is so easy to use bacteria to food, it is easy to promote bacterial growth. In addition, the liquid sugar is opaque, it is difficult to thoroughly disinfected. 254 nm wavelength ultraviolet light can be used to disinfect the liquid sugar product. To compensate for fluid viscosity and color caused by energy loss, a lot of ultraviolet light emitters need to be closely arranged to form the so-called "thin film" reactor. The close combination of this radiation device can provide the required very high amount of UV radiation,
Which can effectively disinfect the liquid sugar. It is the energy output of UV disinfection systems around the traditional 7 to 10 times.
Degradation of residual chlorine
In municipal water treatment and water supply systems, chlorination is necessary.
However, in industrial processes, in order to avoid adverse effects on the product to remove residual chlorine in water is often necessary before treatment.
Use the UV kill aquatic bacteria infectious diseases has been widely recognized advantages. In fact, the industrial sector was among the first to use one of the pioneers of this technology. Today, almost all industrial UV technology will be applied to water treatment systems, including food and beverage, pharmaceutical, cosmetics, health products, manufacturing, high-tech industry and so on. UV disinfection is in the field of water and wastewater main application. At the same time, the industry will this technology in many other respects, including the elimination of ozone and reduce total organic carbon (TOC), liquid sugar, disinfection, chlorine degradation, surface and air disinfection, and cooling towers. This will be a number of UV applications in the industrial sector a brief overview.
Bactericidal
UV sterilization is to use 254 nm wavelength ultraviolet light. The wavelength of UV light, even in trace doses of ultraviolet projection can also destroy the life of a cell core?? DNA, thus preventing cell regeneration, regeneration capacity, the loss becomes harmless bacteria to achieve the sterilization effect. Like all other UV applications technologies, the scale of this system depends on the intensity of ultraviolet radiation (exposure device strength and power) and the contact time (water, liquid, or air exposure to ultraviolet light, the length of time).
Elimination of Ozone
UV sterilization is to use 254 nm wavelength ultraviolet light. The wavelength of UV light, even in small amounts of ultraviolet light projected doses, can destroy the life of a cell core?? DNA, thus preventing cell regeneration, the loss of regenerative capacity to become harmless bacteria, which can be sterilized and effect. Like all other UV applications technologies, the scale of this system depends on the intensity of ultraviolet radiation (exposure device strength and power) and the contact time (water, liquid, or air exposure to ultraviolet light, the length of time).
Reduce the total organic carbon
In many high-tech and laboratory devices, organic matter will hinder the production of high purity water. There are many ways to get rid of organic matter from the water, more commonly used methods include the use of activated carbon and reverse osmosis. Shorter wavelength ultraviolet (185 nm) can effectively reduce the total organic carbon (the value of noting that these devices also generate 254 nm radiation of ultraviolet wavelengths, it can also be disinfected). Shorter UV wavelengths have more energy, it can decompose organic matter. UV oxidation of organic reactions, while very complex, its main principle is very strong by generating free hydrogen oxidation, the oxidation of organic matter into water and carbon dioxide. And ozone removal systems, such degradation of organic carbon in the UV system, UV disinfection system of radioactivity is the traditional three to four times.
Disinfection liquid sugar
Most of the food and beverage manufacturers have a lot of use of liquid sugar. Since sugar is so easy to use bacteria to food, it is easy to promote bacterial growth. In addition, the liquid sugar is opaque, it is difficult to thoroughly disinfected. 254 nm wavelength ultraviolet light can be used to disinfect the liquid sugar product. To compensate for fluid viscosity and color caused by energy loss, a lot of ultraviolet light emitters need to be closely arranged to form the so-called "thin film" reactor. The close combination of this radiation device can provide the required very high amount of UV radiation,
Which can effectively disinfect the liquid sugar. It is the energy output of UV disinfection systems around the traditional 7 to 10 times.
Degradation of residual chlorine
In municipal water treatment and water supply systems, chlorination is necessary.
However, in industrial processes, in order to avoid adverse effects on the product to remove residual chlorine in water is often necessary before treatment.
The basic method to eliminate residual chlorine and chemically treated activated carbon bed. Activated carbon treatment of the shortcomings is that it requires constant regeneration, and the problems frequently encountered bacteria. 185 nm and 254 nm wavelengths of ultraviolet light have been shown to effectively destroy the chemical bonds of residual chlorine and chloramines. Although the need for UV energy to play a huge role, but its advantages in this method does not need to add water to any drugs, do not need to store chemicals, easy maintenance, and along with the role of bacteria and remove organic matter.
Surface and air disinfection
UV for disinfection and ultraviolet air disinfection for water as a long history. Air disinfection equipment for hospitals, clinics and clean rooms have been for years. Now, factories, offices and households have started using air sterilization.
The principle of air disinfection and sterilization as water. Typically, ultraviolet light can be installed in the air pipes at the front coil, or in a fixed shelf on the wall. When the air passing the air to kill micro-organisms were rendered harmless the. The principle of surface disinfection as well. In the food and beverage manufacturing industry, the conveyor belt product is from the surface disinfection equipment disinfection.
Cooling tower disinfection
In order to reduce biocide costs (purchase, storage, insurance), and the health hazards of chemical treatment, UV systems can be installed in the cooling tower water circulation system to play the role of sterilization. If and filters used together, can effectively control the microbial UV cooling tower in the growth. Although the cooling tower still need to keep the concentration of certain biocides, ultraviolet light can significantly reduce application use.
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