Ultraviolet Disinfection Systems With 254 nm UV light
Elimination of bacteria in high purity water systems, while highly desirable, is all but impossible given technologies available today. At best, it can be reduced and its proliferation minimized. Disinfectants such as ozone or chlorine, while highly effective, cannot be tolerated in high purity water other than as part of periodic cleaning and disinfection regimens.
Intimate exposure of bacteria to a wavelengths of 200-300 nanometers (nm) in the UV spectrum will reduce bacterial proliferation by altering cellular physiology in a manner as to minimize or prevent cellular reproduction. The mechanism is described below.
All living organisms contain DNA (Deoxyribonucleic Acid), a nucleic acid that contains the genetic instructions used in the development and functioning of living organisms. The main role of DNA is the long-term storage of information and DNA is often compared to a set of blueprints, since it contains the instructions needed to construct other components of cells such as proteins and RNA. The DNA segments that carry this genetic information are called genes, but other DNA sequences have structural purposes, or are involved in regulating the use of this genetic information.
Application
1. Food processing industry, including juices, milk, drinks, beer, practical oil and canned food.
2. Electronic industry.
3. Hospitals, various laboratory and high levels of pathogenic body water disinfection.
4. Households building, residential, office buildings, hotels, restaurants, water factories.
5. Purification and disinfection of shellfish, fish cleaning and disinfection
6. Military camp, field water supply system
7. Urban wastewater disinfection.
8. Swimming pool, other recreational water disinfection
9. Thermal power, nuclear power plant industrial, central air conditioning system cooling water.
10. Biological, chemical and pharmaceutical, cosmetics for the production of cooling water.
11. Sea water, fresh water breeding, aquaculture water
12. Agricultural water disinfection
UV specification
Product application
Ultraviolet light treatment is a widely recognized and proven method of disinfection of water and has several advantage over other disinfection methods such as chlorination, ozonation, etc. 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.
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‰
| model |
Processing capacity (Ton/Hour) |
power (W) |
inlet and outlet
(inch) |
working pressure (Kg/cm 2 ) |
malfunction alert for UV lamp |
reactor dimension (cm) L×W×H |
dimension of panel(cm) |
anchor bolt (cm) |
overall weight (Kg) |
| YLCn-005 |
0.3 |
16 |
1/2" |
6 |
matched |
30×6×11 |
|
|
5 |
| YLCn-008 |
1 |
25 |
1/2" |
6 |
matched |
47×6.3×11 |
|
|
10 |
| YLCn-050 |
2 |
40 |
1" |
6 |
matched |
100×9×20 |
Φ8.9×25
(diameter×length) |
69×4×Φ1 |
25 |
| YLCn-150 |
6 |
80 |
1+1/4" |
6 |
matched |
100×11×23 |
69×4×Φ1 |
30 |
| YLCn-200 |
8 |
120 |
1+1/2" |
6 |
matched |
100×15.9×30 |
Φ8.9×45
(diameter×length) |
69×7×Φ1 |
35 |
| YLCn-300 |
12 |
160 |
2" |
6 |
matched |
100×15.9×32 |
69×7×Φ1 |
40 |
| YLC-050 |
2 |
40 |
DN25/1" |
6 |
matched |
100×8.9×30 |
25×30×12
(L×H×w) |
60×4×Φ1 |
45 |
| YLC-150 |
6 |
80 |
DN32/1 1/4 " |
6 |
matched |
100×10.8×30 |
60×4×Φ1 |
50 |
| YLC-200 |
8 |
120 |
DN40/1 1/2 " |
6 |
matched |
100×15.9×40 |
60×7×Φ1 |
60 |
| YLC-300 |
12 |
160 |
DN50/2" |
6 |
matched |
100×15.9×40 |
60×7×Φ1 |
70 |
| YLC-360 |
15 |
200 |
DN65/2 1/2" |
6 |
matched |
100×15.9×40 |
50×78×25
(L×H×W) |
60×7×Φ1 |
120 |
| YLC-500 |
20 |
240 |
DN65/2 1/2" |
6 |
matched |
100×21.9×50 |
60×11×Φ1.2 |
130 |
| YLC-600 |
25 |
280 |
DN80/3" |
6 |
matched |
100×21.9×50 |
60×11×Φ1.2 |
140 |
| YLC-700 |
30 |
320 |
DN100/4" |
6 |
matched |
100×21.9×50 |
60×11×Φ1.2 |
150 |
| YLC-1000 |
40 |
360 |
DN100/4" |
6 |
matched |
100×21.9×50 |
60×11×Φ1.2 |
160 |
| YLC-1200 |
50 |
400 |
DN125/5" |
6 |
matched |
100×21.9×50 |
60×11×Φ1.2 |
180 |
| YLC-1500 |
60 |
420 |
DN150/6" |
6 |
matched |
170×27.3×57 |
120×16×Φ1.4 |
210 |
| YLC-2000 |
80 |
560 |
DN150/6" |
6 |
matched |
170×27.3×57 |
120×16×Φ1.4 |
220 |
| YLC-2500 |
100 |
700 |
DN150/6" |
6 |
matched |
170×27.3×57 |
60×128×30
(W×H×T)
|
120×16×Φ1.4 |
275 |
| YLC-3000 |
125 |
840 |
DN150/6" |
6 |
matched |
173×27.3×57 |
120×16×Φ1.4 |
300 |
| YLC-4000 |
150 |
1120 |
DN200/8" |
6 |
matched |
173×32.5×65 |
120×20×Φ1.6 |
325 |
| YLC-5000 |
200 |
1400 |
DN200/8" |
6 |
matched |
173×37.7×72 |
120×22×Φ1.6 |
350 |
| YLC-7000 |
300 |
2100 |
DN250/10" |
6 |
matched |
175×42.6×80 |
120×24×Φ2.0 |
400 |
| YLC-10K |
400 |
2520 |
DN250/10" |
6 |
matched |
176×52.9×95 |
60×150×40
(W×H×T) |
120×28×Φ2.2 |
475 |
| YLC-15K |
600 |
3080 |
DN300/12" |
6 |
matched |
176×78×110 |
120×32×Φ2.4 |
600 |
| YLC-20K |
800 |
3920 |
DN350/14" |
6 |
matched |
confirmed |
confirmed |
confirmed |
confirmed |
| YLC-25K |
1000 |
4760 |
DN350/14" |
6 |
matched |
confirmed |
confirmed |
confirmed |
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