Microwave UV Disinfection–Secondary Water Supply

Advantages of Microwave Ultraviolet Disinfection Technology

Mechanism

1. When microorganisms are exposed to ultraviolet light(primarily in the UVC range,200-280nm),their overall structure is disrupted,causing various bacteria,viruses,and other microorganisms to lose their ability to reproduce and reactivate, thereby achieving a sterilizing effect.

Why Choose UV Technology?

• Effectively kills all types of microorganisms,including drug-resistant Cryptosporidium and Giardia lamblia, which have a high tolerance to chlorine. Does not produce THMS(chlorine disinfection byproducts)and leaves no chemical residues.
• A purely physical,eco-friendly disinfection method that does not affect the color,taste,or mouthfeel of the water
• It is easy to operate and maintain and depending on usage, the lamp may never need to be replaced.

Each microorganism has its own D10 value

D10:The UV irradiation dose required to inactivate 90%(i.e.,10og)of microorganisms(biovalidation dose); 

e.g-E Coil

5.4 mj/cm2=90%kill

10.8mj/cm2=99% kil

16,2mj/cm2=99.9%kill

Etc.

—Crypto

2.5mj/cm2=90%kil

—Giardia

2.5mj/cm2=90%kill

Ultraviolet Disinfection Irradiation Dose

Indicator Categories	Indicator Name	Unit	Limit Value
Standard Metrics	Total Coliforms	MPN/100mL or CFU/100mL	Not detectable
Standard Metrics	Thermotolerant coliforms	MPN/100mL or CFU/100mL	Not detectable
Standard Metrics	E.coli	MPN/100mL or CFU/100mL	Not detectable
Standard Metrics	Total Colony Count	CFU/mL	100
Non-standard indicators	Giardia	Piece/10L	＜1
Non-standard indicators	Crypto	Piece/10L	＜1

Water Supply Process Flow

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