In the water circulation filtration of swimming pool and large-scale landscape water treatment project, disinfection system -- ozone disinfection and ultraviolet disinfection are commonly used sterilization and disinfection methods.Both of them can effectively reduce and destroy harmful bacteria and chemical substances in water during the disinfection process,making the water purification effect more obvious.
Different from ozone disinfection,Medium pressure UV system is a physical disinfection technology.Worldwide,uv disinfection technology is widely recognized and applied in large municipal drinking water treatment and bottled water,beverage and other industrial industries.
Ultraviolet(UV) disinfection technology has unique advantages and development space in energy saving, consumption reduction,environmental protection,etc.It can be said that ultraviolet disinfection technology is a mature water disinfection technology.
What factor can affect the sterilization effect of ultraviolet ray?
The factors affecting the sterilization effect of UV sterilizer are:ultraviolet radiation intensity,irradiation time and penetration rate.
Among them,the irradiation intensity is related to the type of lamp and the aging coefficient of lamp;The irradiation time is related to reflector design,water flow rate and water velocity.The penetration rate is related to water quality,microbial,organic and inorganic content,and is considered as a standard to evaluate the efficacy of ultraviolet disinfection.
D = I,S,T
D -- Uv exposure dose
I -- ultraviolet radiation intensity
S -- uv exposure time
T - penetration rate
In the application of uv sterilizer in swimming pool water treatment,its penetration rate is affected by suspended matter,concentration and atmospheric temperature.
According to the data,the turbidity of the ideal water should not exceed 3NTU,and the turbidity of the pool water stipulated in the water quality standard of swimming pool CJ/T 244 -- 2016 should not exceed 1NTU. Therefore,ultraviolet disinfection device is installed in the pool water filtration equipment,can achieve the purpose of killing bacteria,viruses and microorganisms.
Because UV disinfection does not change the chemical properties of water,it is the ideal choice for disinfection of fish ponds,swimming pools and hot spring pools.The water quality is complex and has the characteristics of long - acting disinfectant by - product.When ultraviolet disinfection is used,medium-pressure ULTRAVIOLET lamp sterilizer with broad-spectrum disinfection function should be preferred.
Medium-pressure UV system does not produce harmful by-products and bad smells produced by other chemical disinfectant disinfection,and does not produce secondary pollution to the pool water;There is no corrosion on the facilities in the pool,water purification equipment and pipelines;It will not stimulate swimmers and water players,and has the effect of decomposing chloramine.Therefore,it is widely used in the disinfection system of swimming pools.
In addition to the swimming pool,large landscape water treatment will use uv sterilizer,in the koi fish pond filter system also uses the same sterilizer,generally in the form of UV sterilization led embedded in the integrated fish pond filter or placed in the filter tank.
Fish pond algae explosion bacteria,green water using ultraviolet sterilization lamp to inhibit bacterial reproduction or kill bacteria,improve green water,get twice the result with half the effort.
Germicidal led is mainly rely on ultraviolet to play the role of sterilization,and UV also has damage to the human body,so in the use of germicidal lamp should pay attention to not directly illuminate the human skin,especially the eyes.In addition,in the fish pond filtration system can not be used continuously for a long time every day,to avoid causing the fish pond water nitrification system is not sound.
