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UV Disinfection System for Water Treatment

Posted on January 12, 2020 UV Disinfection System for Water Treatment

What is UV Disinfection System and How Does it Work?

UV Disinfection System is an extremely effective way to combat microbial contamination in water. However, microbes have to be exposed to UV-C light in the proper amount in order to effectively disinfect the water. UV Disinfection Systems are used in many different applications ranging from the purification of drinking water in individual homes to disinfecting water supply of entire townships to industrial wastewater treatment. UV treatment for water is recognized as a safer and more cost-effective way to disinfect water for industrial applications

UV Disinfection System for water treatment

Industrial Water Treatment

UV sanitization is useful in almost any application where microbial free, safe and pure water is required; and where there is a chance of the water being contaminated before it reaches the final point of use.

1] What Is UV Disinfection System?

In UV water disinfection technology, Ultraviolet light of wavelength 253.7 nanometers is used for disinfection of bacteria, viruses, molds, algae, and other microorganisms, which multiply and grow. UV disinfection technology destroys the DNA of microorganisms which leaves them dead and unable to grow further. UV disinfection technology can be used for drinking water disinfection, process water disinfection, wastewater disinfection, and surface disinfection. Other than disinfection applications, this technology can also be used for TOC removal and Ozone destruction. Plus, there is the UV sterilizer for hospitals, factories and offices.

2] How Does UV Disinfection System Work?

In the UV water disinfection technology, the UV light disinfects by penetrating microorganisms and destroying their DNA. DNA plays an important role in organisms’ functions and reproduction hence destroying the DNA prevents the organism from being active and multiplying. This UV energy (wavelength of 240-280 nm) is also naturally found in sunlight in very small quantities. The same energy is produced in stronger intensities with the help of high mercury discharge lamps, commonly known as UV lamps.

UV Disinfection System

No bacteria, viruses, molds or their spores can survive when exposed to the correct dose of UV light. Therefore UV is considered as the best solution for water sterilization, and for room sterilization, there is the UV mobile sterilizer machine that can be used.

3] Industrial Applications of UV Disinfection System

Ultraviolet disinfection system is not simply a lamp inside a pipe. The UV Reactor must be designed to ensure that all microbes receive sufficient exposure to the UV light (dose). Based on the hydraulic properties of water; the reactor needs to be optimized to guide the flow in a manner so as to maximize residence time and boost turbulence. Well designed Industrial UV water disinfection systems are producing consistently exceptional results in the industrial applications

Few Examples :

    • Food and Beverage – UV disinfection system can help to achieve a High-quality of water as per specifications laid down by the FDA ( Food and Drug Administration)
    • Bio- Pharmaceutical – Water used in Pharmaceutical and healthcare products and for CIP (Cleaning in Place) must be free of chemicals like chlorine, ozone, and pathogens. Most pharmaceutical companies depend on UV systems for water disinfection.
    • Cosmetics – Water that is free of microorganisms and toxins ensure quality and enhance the shelf life of cosmetics. UV Sterilization is the preferred choice for the cosmetic industry across the globe.
    • Waste Water Disinfection and Reuse – To combat the problems of water scarcity and the rising cost of fresh water, UV Disinfection can help by treating the wastewater in the tertiary stage. UV systems that are specially designed for wastewater can thus disinfect wastewater so that the water can be reused for secondary purposes such as flushing and gardening.
    • Swimming Pools – Traditionally, chlorine has been in use to ensure clean water in swimming pools. However, it is increasingly being known that with chemical disinfection, chemical reacts with many other organic matters to form hundreds of new chemicals which are harmful. While UV is recognized as a safer and more cost-effective way to disinfect swimming pools.

4] Benefits of UV Disinfection System

Natural – UV is nature’s way of purification.

Environmentally Friendly – No Toxic by-products are formed during the UV disinfection process

Effective – All known microorganisms are susceptible to UV light

Economical – Lowest operating cost amongst disinfection systems

Safe and Chemical Free – No addition of chemicals hence no danger of overdosing

Fast – It is In-contact purification therefore Instant

Easy to Manage – Well designed systems like the Alfaa UV systems come with many advanced features like CFD (Computational Fluid Dynamics), high-efficiency electronic ballasts, and extremely precise UV intensity monitors which make them highly effective and hence easy to manage.

5] Does a UV  Disinfection System need periodic maintenance?

There can be some cases where the water is not adequately pre-treated and turbidity levels are low.  In such cases, routine inspection and cleaning can be carried out every 6 months. In the case of high turbidity and hardness, the cleaning frequency might need to be increased. Finally, the UV lamp has a limited life and must be replaced once it is exhausted. In the unlikely event of premature failure of the lamp, the monitoring circuit will provide the signal to advise replacement.

Comparison of UV Disinfection System, Chlorination and Ozonation

Ultra VioletChlorinationOzonation
Capital CostLowLowestHigh
Operating CostLowestLowHigh
Ease of InstallationExcellentGoodComplex
Ease of MaintenanceExcellentGoodPoor
Contact Time Required<10 seconds20-30 minutes10-20 minutes

Go Green with ALFAA UV

As a leader in UV technology, Alfaa is at work disinfecting and purifying every kind of water, from drinking water, to process and wastewater.

Alfaa’s UV water disinfection technology is Green & eco-friendly. UV uses no chemical and forms no by-products. Compare this to chlorine which produces dangerous carcinogens such as trihalomethanes which further pollute our environment, and endanger our health. By adopting Alfaa’s UV water disinfection technology, you take a step forward in becoming a “Green Citizen”.

Blog By:- Alfaa UV. Alfaa UV is the market leader for UV disinfection system in India with thousands of installations for various industries and applications.

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Comments ( 1 )

  • I really like it when folks come together and share opinions. Great site, stick with it!

    board of education
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