1. Low-pressure UV lamp

• Single wavelength: 254 nm

• Low power, long service life (8,000–12,000 hours)

• Application: drinking water, purified water, small flow rate, clean water quality

2. Low-pressure high-output (LPHO) UV lamp

• Single wavelength: 254 nm, but with higher power density

• Higher efficiency than standard low-pressure lamps

• Application: medium and large municipal wastewater and water plants

3. Medium-pressure UV lamp

• Broad-spectrum multi-wavelength: 200–400 nm

• High intensity, compact size, inhibits photoreactivation

• Application: wastewater, reclaimed water, swimming pools, seawater, large-flow projects

4. Excimer UV lamp (e.g. 222 nm UV-C)

• Shorter wavelength, safer for human exposure

• Mainly used for air disinfection in occupied spaces

• Rarely used in water treatment

Classification by Structure

5. Submersible UV lamp

6. Open-channel / rack-type lamp

Simple Summary

• Stable performance & long life → Low-pressure / LPHO

• Strong disinfection & small footprint → Medium-pressure

• Air disinfection & human-safe → 222 nm excimer lamp