What IS A UV Sterilizer? How It Works?

What IS A UV Sterilizer? How It Works?

3KW Medium Pressure UV Disinfection System for Wastewater Treatment
High Efficiency 2KW UV Water Sterilizer 30-100T/H In-line UV Sterilizer for Municipal Water Treatment
220V input 1KW Medium Pressure UV Sterilizer for Swimming Pool Water Treatment