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What is the dosage of UV disinfection in different areas?

The UV disinfection dosage requirements for various applications are as follows:

① Drinking water: ≥ 40 mJ/cm² (GB/T 19837-2019 standard);

② Secondary water supply: Normally 16 mJ/cm², switching to 40 mJ/cm² when residual chlorine is insufficient;

③ Municipal wastewater: 20 mJ/cm² (Class A standard);

④ Recycled water: 30-80 mJ/cm² (adjusted depending on application). Medium-pressure UV can meet higher requirements.


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