Large Flow Type Ultraviolet Disinfection Device

A UV water sterilizer uses ultraviolet light to inactivate microorganisms at the DNA level — it does not physically remove particles, sediment, or dissolved chemicals. A water filter captures particulate matter using media or membranes. For comprehensive water treatment, UV sterilization is typically used after pre-filtration (sediment and carbon filters) to achieve both clarity and microbiological safety. The two technologies are complementary, not competing.

UV dose (measured in mJ/cm²) is determined by your target pathogen and the required log-reduction level. Drinking water standards typically require ≥40 mJ/cm². Flow rate must be matched to system capacity so that water spends sufficient time in the UV chamber. Our engineering team will specify the correct system based on your flow rate, UV transmittance (UVT) value, and application. Contact us with your water quality report for a recommendation.

Low-pressure UV lamps are typically rated for 8,000–10,000 hours of continuous operation — approximately 12 months of 24/7 use. Even if the lamp appears to glow after this period, UV output will have degraded below effective germicidal levels. Annual lamp replacement is recommended as standard practice. Renchuang supplies replacement lamps and quartz sleeves for all models.

No. UV disinfection is a purely physical process. It adds no chemicals, alters no water chemistry, does not change pH, and has no effect on taste or odor. This makes it the preferred choice for food and beverage applications, breweries, and pharmaceutical water systems where water quality consistency and purity are critical.

UV effectiveness depends on UV Transmittance (UVT). Turbid, highly colored, or iron-rich water absorbs UV light and reduces disinfection efficiency. Pre-treatment — sediment filtration, iron removal — is recommended before UV to bring UVT to acceptable levels (typically ≥75%). For seawater applications, SS316L reactor chambers are specified for corrosion resistance. Our team can advise on appropriate pre-treatment requirements for your specific water source.

At a minimum, water should be filtered to 5 µm or finer before entering the UV chamber to remove suspended solids that could shadow microorganisms from UV exposure. Iron levels should be below 0.3 mg/L, manganese below 0.05 mg/L, and turbidity below 1 NTU for optimal UV performance. For challenging water sources, our team can design the full pre-treatment train (multimedia filter → cartridge filter → UV) for guaranteed performance.