Self-cleaning Swimming Pool Water Disinfection UV Sterilizer


 

UV Sterilizer

 

UV light does not add anything to the water .

Such as ,undesirable color ,odor , taste , or flavor ,nor does it generate harmful byproducts. It adds only energy in the UV radiation.

Also, UV disinfection requires only a fraction of the contact times required by other disinfection methods.

It is fast, efficient, effective, economical and environmentally-friendly.

Working Theory

Ultraviolet light is invisible, exists in the outside of ultraviolet spectrum,

so it is called ultraviolet radiaction. According to a different wavelength range,

they are cut into A, B, C three kinds of bands, including the C-band UV wavelength between 240-260nm, which is the most effective sterilizer band, band's strongest point it the wavelength of 253.7nm. 

Ultraviolet disinfection systems have many uses in commercial, industrial and domestic applications.
Ultraviolet lamps, germicidal bulbs and ultraviolet disinfection lamp are widely accepted in applications such as:
Water purification, UV disinfection and sterilisation for domestic and industrial water treatment.
Domestic, commercial and industrial wastewater treatment
Municipal sewage and wastewater treatment
Aquaculture, fish farming, oyster farming water treatment, disinfection and purification
Disinfection and sterilisation of potable drinking water
Disinfection and sterilisation of industrial process water
Curing of glues and adhesives
Curing of inks on continuous web, screen printing, lithographic and large format printing processes
Air purification in ducting of factories, food-processing plants, nursing homes, and hospitals
Ozone generation
Surface disinfection, food conveyor sterilisation




Principle of Operation
Ultraviolet disinfection systems typically utilize thin cylindrical bulbs capable of generating narrow band wavelength UV light in the 254 nm range, placed in close proximity to high-purity glass tubes through which the water flows. The unit must be sized to provide adequate dosage at the specified flowrate. The water to be treated must be sufficiently free of turbidity (sediment), iron, manganese and any colorant that could affect transmission of the 254 nm UV light. Manufacturers' specifications should be consulted.

Limitation of Use
The UV water disinfection system NOT intended for the treatment of water that has an obvious contamination or intentional source, such as raw sewage, nor is the unit intended to convert wastewater to microbiologically safe drinking water.

Water Quality (in)
Water quality plays a major role in the transmission of germicidal UV rays. It is recommended that the water does not exceed following maximum concentration levels


Maximum Concentration Levels (Very Important)
Iron≤ 0.3ppm(0.3mg/L)
Hardness≤ 7gpg(120mg/L)
Turbidity≤ 1NTU
Manganese≤ 0.05ppm(0.05mg/L)
Tannins≤ 0.1ppm(0.3mg/L)
UV Transmittance≥ 750‰

Effectively treating water with higher concentration levels than listed above can be accomplished, but may require added measures to improve water quality to treatable levels. If, for any reason, it is believed the UV transmission is not satisfactory, contact the factory.
UV wavelength (nm)

DOSAGE is the product of intensity & time
Dosage=intensity*time=micro watt/cm2*time=microwatt-seconds per square centimeter
(μ W-s/cm2)
Note: 1000μ W-s/cm2=1mj/cm2(milli-joule/cm2)

As a general guideline, the following are some typical UV transmission rates (UVT)
City water supplies850-980‰
De-ionized or Reverse Osmosis water950-980‰
Surface waters(lakes, rivers, etc)700-900‰
Ground water(wells)900-950‰
Other liquids10-990‰




Technical parameters: