Ultraviolet sterilization (UV) is a process to eliminate biological contamination, namely parasite fungus and bacteria. Two types are commercially available, both in tube size. Generally the one containing a wet bulb -at which the water passes directly past the UV bulb- is cheaper.
The other type available has a protective quartz tube around the bulb (dry bulb). The latter has the advantage of easier cleaning, since debris and slime will eventually settle on the bulb, or quartz surrounding. Both work on the same principle.
UV sterilization exposes the contaminants with a lethal dose of energy in the form of light. The UV light will alter the DNA of the pathogens, by virtually gluing DNA molecules together. The changed cell structure prevents the organism from reproducing itself (sterilization), therefore eliminating it.
Fields of application
Reclaimed water recycling
Devices for secondary water supply of the living community
Disinfection of the treated municipal sewer
Disinfection of water for aquiculture and processing
Disinfection of purified water for shellfish species
Disinfection of water in aquaria and water tanks
Disinfection of tap water, purified water and mineral water
Disinfection of water for the food and beverage industries_
Disinfection of water for such water recreational facilities as swimming poor, etc. Disinfection of drinking water for residential, office and restaurant buildings, etc. Disinfection of bacteria-free water for pharmacy, cosmetics and other such manufacturing industries
Disinfection of water for hospitals Water for military bases, ships and vessels and submarine vessels as well as field activities
Disinfection of water for agricultural irrigation
Disinfection of water for municipal landscapes
Disinfection of water for the water treatment system of central air conditioning in commercial buildings
Disinfection of cooling water for various large power stations
Disinfection of drinking water for commercial planes and large passenger planes Disinfection of water for large poultry and livestock farms
Disinfection of water for small domestic drinking machine
Greenhouse seedling culture Aquaculture
Water for municipal landscapes
Disinfection of water for hospitals
Food and beverage
Principle for UV sterilization
All forms of life known on the earth exist on the basis of DNA and RNA for reproduction and existence. DNA and RNA are both composed of 4 kinds of chemical substance units.
A--Adenine
T--Thymine
C--Cytosine
G--Guanine (the basic component for the nucleic acid)
In time of cell reproduction, the long chains inside DNA are opened when Unit A in each chain will look for and connect with Unit T. Each long chain can reproduce an identical chain to the chain freshly split, restore the complete DNA before splitting and serve as the foundation for the new-borne cells. However, the ultraviolet at a wave length of 240-270nm is able to break the capacity of DNA to produced protein and reproduction. Once the DNA and RNA of bacteria and viruses are damaged, their capacity to produce protein and reproduction are both lost. As the bacteria and viruses usually have a very short life cycle, those will soon perish that cannot reproduce.
The effective of UV sterilization is often expressed in killing ratio, e.g., 99.9%. Namely, 99.9% of the original bacteria have been killed and only 0.1% exists, or, 1/1 000 has survived. As 1000 is the 3 in 103 or in log, it is habitually to express the killing ratio with 310g. The killing ratio of ultraviolet depends on two factors: 1, ultraviolet intensity (I); and 2, irradiation time (T).
Advantages of Modern UV C Disinfection)
The UV C Disinfection Technology has been widely accepted by the world for its superior effect in disinfection on cell viruses and other Factors to be Considered Liquid chlorine disinfection Chlorine dioxide disinfection Ozone disinfection LW disinfection pathogenic agents. UVC water disinfection technology has the following obvious advantages.
High-efficiency sterilization
Sterilization of cell viruses with UV C is generally within one second. In comparison, the traditional UV and Cl and Ozone Methods takes 20 min to one hour to match the effect of UVC.
No secondary pollution
As the UV-c Technology can be controlled within the scope of killing the bacteria or viruses only and it is unnecessary to add any chemicals, it Operation complexity Simple to middle grade Simple to middle grade will not cause the secondary pollution to the water body and the surround environment. Meanwhile, it will not change any component of the water.
It makes continuous mass sterilization possible.
The modern UV-C disinfection equipment can work 24 hours a day and 365 days a year. Except for the general maintenance within the fixed time, the optimum operation condition is the 24-hour continuous operation.
Operation and maintenance is simple and easy and of low cost.
With the improvement of UV-C core technology, the UV-C disinfection technology is not only the means of the highest disinfection rate of all the disinfection methods but also the simplest and easiest in operation and maintenance and of the lowest cost, reaching RMB 0.004 Yuan/T of water. Therefore, cost performance ratio is the highest of all the disinfection technologies. It has the high efficiency advantage superior to other sterilization technologies but also is the lowest in cost and expenses for operation and maintenance.
Safe and Reliable Operation
In terms of the traditional sterilization technology, like the methods of using the chloride or ozone, the disinfectant itself is highly toxic, flammable and explosive. Application of these substances causes latent threat to the site operators, the surrounding environment and the nearby residents. The modern ultraviolet disinfection system, however, does not bear such potential risks.
Optimal service condition
| Model |
Amount of disinfectant |
Power
(W) |
Incoming and outcoming water pipes (Nominal/ British system) |
System pressure resistance (Kg/cm²) |
UV light fault Alarm |
Dimension of the reactor (cm)
L×W×H |
Dimension of the control cabinet
(cm) |
Anchor screws |
Transport weight(Kg) |
| YLCn-005 |
0.3 |
16 |
1/2″ |
6 |
Has |
30×6×11 |
|
|
5 |
| YLCn-008 |
1 |
25 |
1/2″ |
6 |
Has |
47×6.3×11 |
|
|
10 |
| YLCn-050 |
2 |
40 |
1″ |
6 |
Has |
100×9×20 |
Φ8.9×25
(d×L) |
69×4×Φ1 |
25 |
| YLCn-150 |
6 |
80 |
1+1/4″ |
6 |
Has |
100×11×23 |
×Φ1 |
30 |
| YLCn-200 |
8 |
120 |
1+1/2″ |
6 |
Has |
100×15.9×30 |
Φ8.9×45
(d×L) |
69×7×Φ1 |
35 |
| YLCn-300 |
12 |
160 |
2″ |
6 |
Has |
100×15.9×32 |
69×7×Φ1 |
40 |
| YLC-050 |
2 |
40 |
DN25/1″ |
6 |
Has |
100×8.9×30 |
25×30×12
(W×H×D) |
60×4×Φ1 |
45 |
| YLC-150 |
6 |
80 |
DN32/11/4″ |
6 |
Has |
100×10.8×30 |
60×4×Φ1 |
50 |
| YLC-200 |
8 |
120 |
DN40/11/2″ |
6 |
Has |
× |
60×7×Φ1 |
60 |
| YLC-300 |
12 |
160 |
DN50/2″ |
6 |
Has |
100×15.9×40 |
×Φ1 |
70 |
| YLC-360 |
15 |
200 |
DN65/21/2″ |
6 |
Has |
100×15.9×40 |
60×7×Φ1 |
120 |
| YLC-500 |
20 |
240 |
DN65/21/2″ |
6 |
Has |
× |
60×11×Φ1.2 |
130 |
| YLC-600 |
25 |
280 |
DN80/3″ |
6 |
Has |
100×21.9×50 |
60×11×Φ1.2 |
140 |
| YLC-700 |
30 |
320 |
DN100/4″ |
6 |
Has |
100×21.9×50 |
60×11×Φ1.2 |
150 |
| YLC-1000 |
40 |
360 |
DN100/4″ |
6 |
Has |
100×21.9×50 |
×Φ1.2 |
160 |
| YLC-1200 |
50 |
400 |
DN125/5″ |
6 |
Has |
100×21.9×50 |
60×11×Φ1.2 |
180 |
| YLC-1500 |
60 |
420 |
″ |
6 |
Has |
× |
120×16×Φ1.4 |
210 |
| YLC-2000 |
80 |
560 |
DN150/6″ |
6 |
Has |
170×27.3×57 |
120×16×Φ1.4 |
220 |
| YLC-2500 |
100 |
700 |
DN150/6″ |
6 |
Has |
170×27.3×57 |
60×128×30
× |
120×16×Φ1.4 |
275 |
| YLC-3000 |
125 |
840 |
DN150/6″ |
6 |
Has |
170×27.3×57 |
120×16×Φ1.4 |
300 |
| YLC-4000 |
150 |
1120 |
DN200/8″ |
6 |
Has |
173×32.5×65 |
120×20×Φ1.6 |
325 |
| YLC-5000 |
200 |
1400 |
DN200/8″ |
6 |
Has |
173×37.7×72 |
120×22×Φ1.6 |
350 |
| YLC-7000 |
300 |
2100 |
″ |
6 |
Has |
175×42.6×80 |
120×24×Φ2.0 |
400 |
| YLC-10K |
400 |
2520 |
DN250/10″ |
6 |
Has |
176×52.9×95 |
60×150×40
× |
120×22×Φ2.2 |
475 |
| YLC-15K |
600 |
3080 |
DN300/12″ |
6 |
Has |
176×78×110 |
120×32×Φ2.4 |
600 |
| YLC-20K |
800 |
3920 |
″ |
6 |
Has |
Designated |
Designated |
Designated |
Designated |
| YLC-25K |
1000 |
4760 |
DN350/14″ |
6 |
Has |
Designated |
Designated |
Designated |
Designated |
Notes:
1. Device Power: 220V/ 50HZ, service life of the UV light tube is ≥9000 hours.
2. This Table for Technical Parameters lists the units which can be used for disinfection of such pure water as: tap water, purified water, water for
aquaculture and livestock and poultry husbandry, water for food processing, supply of water of different qualities and water for medical
purposes, etc.
3. The sterilization efficiency depends on the transparency, impurities and temperature of the water and the sterilization efficiency is 99% or
designed for special purposes.
4. YLCn refers to the thread filling while YLC refers to the joint of flange adapter.
5.Various of. advanced online monitoring instrument and meters as well as remote monitoring system can be allocated for the specific demand
of users, for example: UV lamp monitoring system, UV intensity monitoring systems, water temperature detection system and disinfection time
accumulating system, etc.
Q. Are UV sterilizers a good replacement for biological and mechanical filtration?
A. NO. UV sterilizers are not a replacement for good biological and mechanical filtration, regular water changes, or proper control of the nitrogen cycle.
A properly selected UV sterilizer can help clarify water, rid free-floating algae, and control outbreaks of harmful bacteria and certain parasites.
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