99%+ kill rate
UV-C breaks the DNA bonds of micro-organisms so bacteria, viruses, parasites and algae spores cannot replicate.
UV Filter
An aquaculture UV sterilizer destroys the DNA of bacteria, viruses, parasites and algae spores at a 99%+ kill rate. Nothing is dosed, nothing remains in the water, and pathogens cannot recirculate back to your tanks. As a proven uv sterilizer aquaculture design, it forms the final biosecurity barrier in any RAS.
- Capacity15–300 m³/h
- UV dose30 mJ/cm² standard
- Kill rate>99%
- ChamberHDPE/PP / SS304 / SS316
ISO 9001 CE OEM / ODM
15+ years in aquaculture engineering · Trusted by Japfa Group, Japan Nissui & Tropo Farms · Shipped worldwide in one container
Product Description
- Seawater, freshwater aquaculture breeding (fish, eels, shrimp, shellfish, etc.) water disinfection.
- Water disinfection in the food processing industry. Including juice, milk, drinks, beer, edible oil, and different kinds of canned food, beverage products, and other water equipment.
- Hospitals, various kinds of laboratory water disinfection, and high levels of pathogen wastewater disinfection.
- Daily life water disinfection including residential areas, office buildings, water plants, hotels and etc.
- Disinfection of biochemical pharmaceutical, cooling water used for cosmetics production.
- Water disinfection of swimming pool, Water entertainment facilities
Advantage:
- To kill various bacteria, viruses, and other microorganisms quickly and effectively
- Through photosynthetic degrade chloride in water effectively
- Easy operation and maintenance;
- The less occupied area can deal with a large amount of water
- No pollution, environmental protection, no produce toxic side effects;
- Low investment costs, low operating costs, easy install
- Designed in a unique wall treatment process by optics principle, to make the cavity maximize the advantage of using UV to improve sterilization effect doubled.
Application
Specifications
Models & configuration
Flow ratings at 30 mJ/cm² dose, integrated from industry practice — final specifications are confirmed by SIGMA's production line per project.
| Model | Capacity | Typical use | Core configuration |
|---|---|---|---|
| SIGMA-UV-15 | 15 m³/h @ 30 mJ/cm² | Small RAS / hatchery | 200 W low-pressure UVC ×n · HDPE/PP / SS304 |
| SIGMA-UV-50 | 50 m³/h @ 30 mJ/cm² | Small–mid farms | 200 W low-pressure UVC ×n · HDPE/PP / SS304 |
| SIGMA-UV-100 | 100 m³/h @ 30 mJ/cm² | Mid-size farms | 200 W low-pressure UVC ×n · HDPE/PP / SS316 |
| SIGMA-UV-150 | 150 m³/h @ 30 mJ/cm² | Large farms | 200 W low-pressure UVC ×n · SS304/316 |
| SIGMA-UV-200 | 200 m³/h @ 30 mJ/cm² | Large / seawater farms | 200 W low-pressure UVC ×n · SS316 |
| SIGMA-UV-300 | 300 m³/h @ 30 mJ/cm² | Industrial-scale culture | 200 W low-pressure UVC ×n · SS316 |
| Sterilization rate | >99% — pathogen DNA destruction (bacteria, viruses, parasites, algae spores) |
|---|---|
| UV dose | 30 mJ/cm² standard; higher doses available per species / pathogen |
| Lamps | Low-pressure high-output UVC lamps in quartz sleeves, ~16,000 h lamp life |
| Chamber | HDPE/PP / SS304 / SS316 (316 for saltwater) |
| Flow type | Flow-through inline design — large volumes, small footprint |
| Water type | Freshwater / saltwater |
| Options | Lamp-life monitoring and alerts, PLC integration, wiper cleaning, VFD |
System composition
No chemicals, no by-products
Nothing is dosed and nothing remains in the water — completely safe for the stock.
Reflective inner wall doubles the dose
An optically engineered reflective chamber wall maximises UV exposure, roughly doubling the effective dose.
Flow-through, compact
Treats 15–300 m³/h inline with a small footprint.
Quartz sleeves, easy lamp change
Lamps are protected by quartz sleeves and replaced quickly with minimal downtime.
Fresh- and seawater duty
HDPE/PP or 316 stainless chambers handle both water types.
Beyond the fish farm
The same units serve drinking-water, food & beverage, laboratory, pool and municipal disinfection.
Application
- RAS pathogen control — final disinfection after biological treatment, before water returns to the tanks
- Hatchery and nursery biosecurity, preventing cross-infection at the fry stage
- Quarantine and isolation system disinfection
- Pre-disinfection of intake water for sea- and freshwater farms
- Food & beverage, laboratory, swimming-pool and municipal water disinfection
Video
UV Filter
FAQ
Frequently asked questions
How does a UV sterilizer kill pathogens?
Low-pressure UV-C lamps emit ultraviolet light that breaks the DNA bonds of micro-organisms, so bacteria, viruses and parasites lose the ability to replicate — a sterilization rate of over 99%, with no chemicals added and no toxic by-products.
Where does the UV sterilizer go in a RAS?
It is the final barrier — after mechanical and biological filtration, before the water returns to the tank — keeping pathogens from recirculating back to the fish.
What UV dose does the sterilizer deliver?
A standard dose is around 30 mJ/cm², and a reflective inner-wall treatment maximises UV exposure inside the cavity to roughly double the effective dose; the dose can be increased for specific species or pathogens.
Is the UV unit suitable for seawater?
Yes — the chamber is HDPE/PP or 304/316 stainless steel for fresh- and sea-water duty, with a quartz sleeve protecting each lamp and quick, simple lamp replacement.
Can the UV sterilizer be installed inline on a pond, not just a RAS?
Yes — it's a flow-through inline unit that plumbs directly into a pipe, whether that's a full RAS loop or a simple inline UV light for pond duty on a smaller system; the same 15–300 m³/h model range covers both.
Should I use UV or an ozone generator for aquaculture disinfection?
Both kill pathogens without leaving chemical residue, but they work differently: UV needs clear water and line-of-sight contact, while an ozone generator for aquaculture also oxidises dissolved organics and can be dosed upstream of the tank. Many RAS farms run UV as the final barrier and add ozone earlier in the loop for extra water-quality benefit; SIGMA can size either or both for your system.
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View details →Request a tailored quote
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