UV Disinfection for Industrial Water Treatment
Supplying a range of UV systems, including low and medium pressure units, specifically selected for clients requirements
Transmissivity Testing for UV Performance
Prior to offering a system to our customers we will arrange a check on the transmissivity of the water, which enables us to offer any pre-treatment that may be required, thus ensuring optimum performance of the UV unit we offer.
Unlike many other companies we don’t select a UV system simply based on the flow of a system. We always ensure that the water quality at a customer site is taken into consideration before we consider any options, ensuring our clients system adequately treats their water.
UV Technology
UV light is low wavelength electromagnetic radiation, below lights visible spectrum. For disinfection purposes we often refer to UVC and the most useful wavelengths are between 200nm and 280nm. It works by breaking the hydrogen bond linking the adenine and thymine pair in a pathogens DNA, which stops the pathogen from replicating.
Once the pathogen has been inactivated by UV light it cannot replicate and has a typical life of only a few minutes thus rendering it harmless. The level of a pathogens inactivation depends on the UV dose applied and the pathogens susceptibility to this dose. Dose is measured as UV intensity x exposure time.
Types of UV Lamps Available
Almost all commercial industrial and municipal UV disinfection systems use mercury vapour lamps to produce UV light for disinfection.
The most common types of UV lamps available are:
- Low Pressure lamps producing monochromatic light at 254nm
- Medium Pressure lamps producing polychromatic light between 200 and 300 nm
UV systems can be supplied for a number of applications, including:
- De-ozonation
- Disinfection in Brine
- Disinfection in Sugar Syrup
- General disinfection
- Performance Qualified disinfection
What are the benefits of UV Light Disinfection?
- Requires no chemicals
- Leaves no taint or taste in the liquid
- Can be more efficient than chlorine
- Cheaper than ozone
- Effective against bacteria, moulds, spores and viruses
- Effective against chlorine resistant species, such as Cryptosporidium and Giardia
Our Range of UV Light Systems
- Capacities from <1 to >1,,000m3/hr
- Water qualities from <30% – 100% transmittance
- High solids tolerance.
- From pure water to high BRIX syrups.
- Industrial and UPW systems including full hygienic systems
- Axial flow “U” shape chamber (top in / top out)
- Axial flow “S” shape chamber (bottom in / top out)
- Axial flow “L” shape chamber (front in / top out)
- Cross flow chamber
Something else
Brewing + Distilling
Whether you're crafting whisky or brewing at scale, Barr + Wray delivers process equipment that handles the full fluid journey, from ingredient water to the final product. With precision pumping, filtration, and disinfection systems that protect quality and flavour.
Food + Beverage
From ingredient handling to final rinse, Barr + Wray provides fluid processing systems - including pumps, filters, and UV, that support hygiene, consistency, and production efficiency.
Oil + Gas
In high-demand environments, our engineered systems handle a wide range of fluids, from process water to chemical streams - with robust pumping, filtration, and disinfection solutions.
Utilities
Barr + Wray supports utility providers with reliable fluid handling systems that manage water, wastewater, and treatment chemicals - ensuring operational continuity and compliance.
Petrochemical
Our process equipment is built to handle aggressive fluids and complex chemistries, helping petrochemical plants optimise flow, filtration, and disinfection across critical systems.
Pharmaceutical + Biotechnology
We deliver precision-engineered systems for processing fluids used in drug formulation and biotech production - ensuring purity, consistency, and compliance with industry standards.
Chemical + Coatings
Our equipment handles everything from raw chemical inputs to final product filtration, helping manufacturers maintain fluid integrity and reduce waste.
General Industrial
Across diverse industrial sectors, Barr + Wray provides tailored fluid processing systems, from pumping and filtration to disinfection - that improve reliability and reduce downtime.
Building Services
From HVAC circuits to greywater reuse, Barr + Wray supplies pumps, filters, and UV systems that keep building services running efficiently and sustainably.
Aquaculture
Barr + Wray supports aquaculture operations with systems that manage both water quality and fluid circulation, from nutrient-rich feed solutions to waste stream control - using pumps, filtration, and UV technologies tailored to aquatic environments.
Need help with your water systems?
Our engineers are ready to help you scope, design, and deliver the right solution for your site.
Brewing + Distilling
Food + Beverage
Oil + Gas
Utilities
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