Technical services

FAQ

FAQ

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Why choose UV-disinfected water?

(1) Ultraviolet light is more effective than chlorine at killing viruses.

(2) UV environment and user-friendly—no handling or storage of hazardous chemicals, eliminating the risk of overexposure.

(3) UV is highly cost-effective and can be considered to have an operating cost of just a few cents per hundred gallons.

(4) UV treatment does not alter the taste, odor, pH, or conductivity of water, nor does it introduce any ordinary chemical substances into the water.

(5) The UV system is easy to install, requiring only two water connections and a power cord.

(6) The UV system is compatible with all other water treatment products: RO filtration, water softening, and more.

(7) The UV system is easy to maintain—simply clean it regularly and replace the lamp annually.

(8) The operational wear of ultraviolet systems, combined with their lack of moving parts, makes them one of the most efficient and durable water treatment systems on the market.

Do I need to pre-treat my water before using my UV system?

Yes, for a 5-micron sediment filter, the system must first be disinfected. Ideally, the disinfection process should occur as the final treatment step before the water reaches the faucet.

Ultraviolet light plays an important role in water disinfection and transmission. It is recommended that the water concentration not exceed the following maximum levels:

• Hardness <7 GPG

• Iron <0.3 PPM

• Manganese <0.05 PPM

• Turbidity <1 NTU

• UVT > 75%

Will ultraviolet light alter the taste and/or smell of my water?

UV disinfection is a physical disinfection method. This means that ultraviolet light affects only microorganisms present in the water. The water does not undergo any chemical changes, nor does it alter in taste or odor.

Ultraviolet dose?

The ultraviolet dose is the product of the ultraviolet irradiance, the intensity of ultraviolet light, and the duration of exposure. According to measurements in millijoules per square centimeter (mJ/cm²), the following parameters are used for calculation:

Ultraviolet dose = intensity × exposure time

(Seconds) = Millijoules/(square centimeter) × Time

= mJ/cm²

How to Choose a UV Disinfection System

The use of ultraviolet (UV) light has now become a widely adopted practice across a broad range of applications, including municipal drinking water and wastewater treatment, industrial processes and manufacturing, as well as standards in the maritime, marine, and aquaculture industries. Using UV disinfection systems to ensure water is free from harmful microorganisms is a mature, standardized, and environmentally friendly technology.

To provide the best UV system to meet your needs, the following variables all require a UV system of a specific size tailored to the application.

The following information is helpful but not required for obtaining a quote:

• Flow rate, such as 150 cubic meters

• Applications such as drinking water/wastewater/swimming pools

• Water sources, such as boreholes/surface water/ultimate effluent

• UVT (ultraviolet transmittance), for example, 90% UVT

• Preprocessing, such as detail filtering

• Intended use, such as irrigation/drinking water/process water

• Challenges posed by known organisms, such as the reduction of Cryptosporidium

• Known dose standards, such as a minimum of 30 mJ/cm² and an average of 60 mJ/cm².

• Treatment cycles, such as single-pass treatment or recirculation systems