Thanks to ultraviolet disinfection's outstanding advantages in water treatment ( safe, low cost, efficient and effective disinfection, no pollution for water, simple operation, and so on), ultraviolet disinfection is regarded as one of the best disinfection ways in the world. Around the world, especially in European countries and North American, many countries use UV as the first choice for POU and small water supply system, and provide excellent as well as purified water for multiple industries.
Drinking Water
Hotels
Ultra Purified Water
Hospitals
Food Process
Cooling Towers
Chemical Medicine
Fish Hatcheries
Mineral water
Sewage Treatments
Electronic Industry
Circulating Water Recycle
Laboratories
Cosmetics Manufacturers
Beer Industry
Bottled Water Suppliers
Pharmaceutical Industry
Aquaculture & Hydroponics
1.Disinfection
To reach disinfection purpose, most UV disinfection systems emit 254nm UV energy that destroys DNA which provides the mechanism for all functions needed to sustain life, and prevents cell reproduce of microorganisms.
2.Ozone Reduction
In the industrial water treatment system, Ozone is used to disinfect and purify water, but it has strong oxidizability, so the residual Ozone has to be eliminated in order to avoid affecting next steps in the water treatment system. By using 254nm wavelength UV, the residual Ozone is catalyzed to Oxygen.
3.TOC (Total Oxidizable Carbon)
In ultrapure water systems, UV systems are used for the effective reduction of organics, commonly referred to as TOC (Total Oxidizable Carbon). The 185 nm wavelength for TOC reduction is shorter and consequently power than the 254nm wavelength. In this case, UV energy promotes free radicals in varying degrees of photochemical excitation. These hydroxyl (OH-) free radicals break various chemical bonds of organics which in turn produce chain reactions, oxidizing most organic into CO2 and H2O.
4.Syrup Disinfection
Syrup is widely used in beverage and food process industry, but it is very easy for bacteria to breed in syrup. Since it is opaque, it is very difficult to disinfect perfectly. The 254nm wavelength UV is widely used for sterilize liquid syrup. Normally, the tube body of UV disinfection system is vertical equipment.
5.Cooling Tower Disinfection
Traditionaly, the circulating water of cooling tower is treated by adding chemicals. However, this chemical treatment will be harm for environment. By using UV on the by pass circulation system, microorganisms multiplication can be effectively controlled. If UV is used with filter system, the result will be better. Application of UV disinfection system will reduce the usage of chemicals but some proportion of chemicals is still needed.
6.Swimming Pools and Spa Circulation System
Regularly, the circulation system of swimming pools and spa is sterilized by applying chemicals. However, by using UV disinfection system, the usage of chemical dosage will be reduced by 50%.
Regular questions and answers for Swimming Pools and Spa Circulation System
A There are several factors that have an effect on chlorine consumption. UV has an indirect effect on chlorine and makes it to work more efficiently because there are less contaminants in the water, which results in less chlorine consumption.
AYes. UV will readily degrade free chorine, if it is unstabilized. This is the reason that UV should always be used within balanced pool water which is stabilized with cyan uric acid.
ANo, UV does not affect water balance or PH. Nevertheless, it is very important to maintain proper PH and alkalinity, because these factors affect the scaling potential of metals (iron, manganese, copper, calcium) which can then precipitate on the quartz sleeve and impair the performance of the unit.
ANo, UV energy does not leave a computable residual in your pool. It is a supplemental system that sterilizes water only when it passes inside the unit's wet chamber and receive visual contact with UV energy from the lamp. The use of an EPA registered chlorine sanitizer which is required to keep a 1-3 ppm free chlorine residual at all times.
AUV is perfect with all chlorine-based programs. Because of its PVC housing, the plastic chamber is to be used with all chlorine generator pools and pools using bleach.
AYes. Even though such systems use metal ions, the concentrations are low enough to not get in the way with the UV transmission. Any auxiliary equipment such as an ionizer should be installed after the UV system.
AYes, UV systems work with any chlorine chemical feeder or saline chlorination. However, the plastic chamber must be used because its plastic components are well-matched with pools outfitted with saline generators. Due to its stainless steel construction, the stainless chamber will not be covered under the limited warranty if used on a saline generator pool.
AYes, if your timer is scheduled to cycle many times during the day, then the on/off frequency will shorten the life of the lamp. We suggest that the daily minimum pump run time is 10-12 hours continuously. The ultraviolet lamps are designed for 9,000-10,000 hours of continuous use or to be switched on 1,000 times; i.e. approximately 2-3 years for a seasonal outdoor pool, or 1-2 year for an indoor pool operating 24 hours a day.
AYes, iron has a significant absorbance at 254 nm UV light, which makes it to interfere with the UV transmission and possibly precipitate onto the surface of the quartz sleeve. In order to use pools filled with well water effectively, please test the water for metals. If metals are there, please turn off your unit, sequester them, filter them out using a filter aid and clean the filter chemically. After the metals are totally removed from the water, the UV device can be turned back on.
AYes, cloudy water will reduce UV transmittance and diminish the effectiveness of the device. This is why it is important to take a proactive approach to maintain proper water balance and your filtration system.
AThe UV devices lose effectiveness in turbid water above 0.5 NTU. If your water is cloudy, clean the filter chemically and use a water clarifier according to label directions.
AYes, hard water does not decrease the transmittance of the UV light; but, in order to avoid any scale buildup is cleaned off of the quartz sleeve, a more frequent maintenance regimen is recommended.
AYes, as long as the UV device is installed in the pool line before the heater and there is at least 0.5 psi operating pressure within the vessel itself. Some spas may require the 5 psi replacement pressure switch, which is dependent upon their size. Please refer back to your UV dealer for more information.
AYes, only if the ozonator is installed after the UV device. 254 nm UV light will destroy ozone, so you will have limited effectiveness of the ozonator if it is installed before the UV system