1H2O3 has selected a range of specific reactors for the UV disinfection of salty, corrosive water, specially made of HDPE and capable of treating up to high flow rates. This range has been specially developed for professionals in :

  • shellfish farming
  • aquaculture
  • Saltwater fish farming
  • aquariums

HDPE reactors are designed to meet the most stringent requirements of professional users and optimize their operations in complete safety.

UV disinfection systems for salt water (seawater)

The transmittance of seawater is lower than freshwater, and it is generally stable: 85%.

HDPE reactors are designed according to the flow rate to be treated. The higher the flow rate, the larger the reactor, in order to guarantee the contact time required for disinfection. In fact, the number and power of lamps will be calculated to guarantee the dose necessary and sufficient to eliminate 99.9% of microorganisms (bacteria, viruses, suspended algae, etc.).

Here are some of the important criteria for shellfish and seawater fish farming professionals:

  • Equipment specially designed to resist corrosion
  • Simplified in-line sizing, taking into account the specific turbidity of salt water, thus guaranteeing the effectiveness of UV radiation
  • Power that provides real efficiency right up to the end of lamp life, and guarantees effective destruction of undesirable micro-organisms (in particular certain viruses and suspended algae).
  • Assurance of healthy, crystal clear water
  • It avoids the use of any chemical substances
  • Simple, maintenance-friendly design
  • Allows quick and easy installation
  • Safe for flora and fauna
  • Total respect for the environment
UV disinfection of salt or corrosive water

Disinfection system benefits

HDPE UV saltwater disinfection reactors have optimized performance thanks to UV-C lamps from the latest technologies with High Intensity (HO) or Amalgam (AM) performance:

  • Extremely long lamp life (12,000 to 13,000 hours depending on number of switch-ons)
  • Dedicated electronic ballasts ensuring maximum UV efficiency of the lamps and integrated control
  • A sealing system for easy maintenance
  • Lamp control with individual indicator lights
  • insignificant pressure loss
  • Inlet/Outlet connection with rotating flanges
  • Drain plug
  • Maintenance: quick and easy lamp change and quartz sleeve cleaning

Sizing advice: UV disinfection of salt water

On the page dedicated to UV reactors, many solutions are offered (up to a unit flow rate of 45 m3/h). If your flow rate exceeds 1000 m3/h, please ask us!

  • Select ““
  • Select the source of water to be purified, e.g. ” “.
  • Enter the flow rate to be treated (for example 25 m3/h)
  • Adjust the cost of electricity in your country (for example 0.09€ for France; 0.23€ for Germany)
  • Let 30 mJ / cm² (or adapt)
  • Specify the temperature of the water (normally, between 5 and 40°C is sufficient)
  • Please enter your email address, we will send you the design right away

In any case, to ensure optimal disinfection and decide if pre-filters are necessary, it is recommended to carry out an analysis of the water source with these parameters:

  • Iron
  • Hardness
  • Turbidity
  • Manganese
  • Suspended solids (TSS)
  • Transmittance UV

FAQ

What are the specific challenges of UV disinfection for salt and corrosive water?

UV disinfection of salt water presents unique challenges due to the corrosive nature of salt. Metal components in standard UV systems can corrode quickly, reducing processing efficiency and equipment life. In addition, salinity can affect the transmission of UV rays, requiring specific adjustments to ensure effective disinfection.

To resist corrosion, UV systems for salt water use specific materials such as reinforced plastic (such as HDPE) or special corrosion-resistant alloys. These materials extend the life of equipment and maintain the effectiveness of disinfection.

UV disinfection is effective in removing pathogenic microorganisms, but it does not remove dissolved salts or chemical contaminants. To make salt water drinkable, a desalination process, such as reverse osmosis, is required in addition to UV disinfection.

Regular maintenance is crucial for UV systems treating salt water. It is recommended to clean quartz sheaths frequently to prevent the build-up of saline deposits and to replace UV lamps according to the manufacturer’s recommendations, usually after 8,000 to 10,000 hours of use. Proper maintenance ensures effective disinfection and extends the life of the system.

UV disinfection offers several advantages: it does not require the addition of chemicals, thus avoiding the formation of potentially harmful by-products; it is effective against a wide range of microorganisms; and it does not change the taste or smell of the water. However, it does not leave a disinfectant residue, which means that recontamination can occur if the water is stored after treatment. It is therefore essential to combine UV disinfection with good storage and distribution practices.

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