EUV Water Sterilizer

EUV Water Sterilizer

Principle of operation:

The principle of ultraviolet sterilization and sterilization is to use the energy of a high-energy belt of ultraviolet photons to destroy the DNA or RNA structures of various viruses, bacteria and pathogens in water, which, after destruction, lose the ability to produce proteins and reproduce, thereby achieving the bactericidal goal. The ultraviolet radiation germicidal process is a physical process, ultraviolet radiation does not add any substances to the water, does not produce any by-products, and is effective, environmentally friendly and safe. Ultraviolet radiation is divided into three ranges: UVA, UVB and UVC. Ultraviolet radiation has a sterilization function. Among them, 253.7nm wavelength ultraviolet sterilization is the strongest, 185nm wavelength spectral line can also decompose organic molecules in water, generate hydroxyl free radicals, oxidize organic compounds in water to carbon dioxide to achieve the purpose of TOC removal, UV tube quality evaluation mainly depends on the output efficiency in this range.

The general name for radiation in the ultraviolet electromagnetic spectrum with wavelengths between 100 and 400 nanometers. It is outside the ultraviolet light spectrum and is therefore called ultraviolet light and is invisible light. According to the CIE (International Commission on Illumination) classification of ultraviolet ranges, they can be divided into UVA (320 - 400NM), UVB (280 - 320NM) and UVC (100 - 280NM). Principle of ultraviolet sterilization: When bacteria and viruses in water are exposed to a sufficient dose of ultraviolet waves UV - C in the range of 240 to 280 nm, they can destroy the molecular structure of DNA (deoxyribonucleic acid) or RNA (ribonucleic acid) in bacteria and viruses, causing death vegetative cells and/or regenerative cells, achieving a sterilization effect. Especially on the waves.

The 253.7NM tail has the strongest bactericidal effect on the outside world. Ultraviolet radiation with a wavelength less than 240 nm leads to the formation of ozone by oxygen in air or water. Ozone has a strong oxidizing ability and can also play a bactericidal role. In addition, it can decompose organic matter in water. Ultraviolet rays with a wavelength of 185 nm have the greatest ability to produce ozone. It can also decompose organic molecules in water, produce hydrogen free radicals, and oxidize organic compounds in water to CO. ₂ & H ₂ · Achieving TOC removal effect.

Principle of ultraviolet sterilization

Sterilization source power - ultraviolet C - range (UVC)

UV radiation is divided into four ranges: A / B / C / D. C - range has a bactericidal effect. Of these, ultraviolet sterilization is strongest near 254nm.

Product advantages

1. Effective sterilization

Using UV rays to sterilize bacteria and viruses typically achieves 99.9% in 0.3S - 6 seconds.

2. Effective sterilization range

Ultraviolet sterilization is the highest in the spectrum and can effectively kill almost all bacteria and viruses. It can achieve 99.99% sterilization rate.

3. Effective sterilization range

Traditional disinfection methods, such as the use of chlorides or good oxygen, are themselves highly toxic and flammable substances. UV systems do not pose such a safety risk.

4. Low cost, low operating maintenance cost

Ultraviolet germicidal equipment occupies a small area, the construction requirements are simple, and the total investment is small. Operating costs are also low. At the level of 1000 tons of water treatment capacity, its cost is only 1/2 of the cost of chlorination.

Principle of operation

UV radiation is a safe, effective and thorough disinfection method; The UV sterilization method involves irradiating and destroying the DNA and RNA of bacteria and viruses. Zones of ultraviolet radiation (UV radiation) cause irreversible damage to the DNA molecules of microorganisms, as a result of which they cannot reproduce and ultimately die.

Compared with residual chlorine (chloramine), ultraviolet rays are healthier and have no side effects; Ultraviolet combined chlorine (chloramine) technology, resulting from chlorine disinfection, is the cause of chlorine odor in the air in indoor swimming pools. Chloramine also causes eye pain, and skin allergies are also a leading cause of corrosion of composite structures in indoor pools. Ultraviolet rays not only decompose chloramine, but also self-clean. No microbe is immune to ultraviolet radiation, not even some pathogens that chlorine cannot kill.

Reduce ozone and make it safer! Ozone is not allowed in drinking and industrial water. It is processed through this system. Ozone absorbs ultraviolet rays with a wavelength of 254 nm and breaks down into dissolved oxygen.

Use conditions: Ambient temperature: 5°C ~ 40°C Relative humidity: 85% Working pressure: 0.4 MPa Power supply: 220V / 50Hz Water temperature: 5°C ~ 60°C

Lamp life: 9000h (standard lamps / high-strength lamps) 13000h (mercury lamps)

Special Warning: Ultraviolet rays can cause serious damage to your eyes and skin. It is forbidden to look with the naked eye at the switched on ultraviolet lamps.

The effectiveness of ultraviolet sterilization

Installation Attention

1. Power requirement 220V/50Hz, UV lamp life is more than 9000H, the sterilizer is made of SUS304 or SUS316 stainless steel, the outer surface is mechanically polished or sandblasted.

2. Ultraviolet lamps are very harmful to human eyes and skin during operation, so do not look directly or stand in the area illuminated by ultraviolet lamps. If you accidentally burn your skin or eyes, please go to the hospital in time. Damage manifests itself as eye pain and peeling of the surface of the skin.

3. After receiving the equipment, please open the box in time to check whether the accessories are complete and the quartz tube of the lamp is not damaged. This should ensure that the hardware installation cycle is not affected.

4. The equipment must have enough space for installation. There must be a clearance of at least 1.1 m on the side of the luminaire to facilitate subsequent removal of the luminaire and replacement of accessories.

5. After installing the equipment, you must first turn on the boiling water to ensure that the equipment does not leak, and then turn on the power and turn on the switch of the device. Due to the strong heat dissipation of ultraviolet lamps, it is therefore prohibited to light the equipment first and then turn it on, otherwise it may easily cause damage to the equipment!

Scope of application

Bactericidal disinfection of raw water: domestic secondary water supply, aquaculture pre-treatment, food processing, raw water, pharmaceuticals, chemical industry, cold beverage production, livestock farming, rural well water treatment;

Wastewater sterilization: large and medium-sized wastewater treatment plants, laboratory water disinfection, water reuse, hospital medical wastewater, swimming pool water treatment and disinfection and so on.

Carefully select famous domestic and foreign brands of ultraviolet lamps, providing domestic and imported branded lamps for customers to choose, to ensure customers' stability in the process of use.

Notes:

1. Equipped with electronic ballast, the service life exceeds 9000 hours.

2. Ultraviolet radiation output is measured in the laboratory at a wavelength of 254 nm. In practice, it may change as the environment changes.

Advantages of lamps:

Civil

1. Start-up heating, long service life, low failure rate.

2. Strong ultraviolet output: using high purity quartz glass tubes, perfect manufacturing technology.

3. Very little UV attenuation: UV radiation only decays 20 - 30% over its lifetime.

4. High Reliability and Stability: Advanced manufacturing processes and quality management ensure the reliability, stability and consistency of UV lamps internationally.

5. Cost effectiveness. Since the penetration ability of ultraviolet light is very weak, the penetration of ultraviolet light will be seriously hampered if the quartz sleeve does not contain enough quartz. Select quartz casing, the UV penetration rate reaches more than 90%.

Specification:

External diameter: 23mm

inner diameter: 20mm

wall thickness: 1.5 mm

Length: 900 mm / 1200 mm

Special ballast

Balloons play a critical role in lamp life cycle and UV control. Therefore, choosing a ballast that matches the lamp will improve the stability and performance of the entire equipment.

Technical specifications:

● Rated voltage: 230VAC power factor: 2099

● Voltage range: 198 - 242V, input frequency

● Thing: 50/60H2, Wave peak ratio: ≤17, efficiency

● Rate: 290%

● Maximum case temperature:

● 70 'C Start method: pre-start

Effect of temperature on the output of ultraviolet rays

The UV output efficiency of low pressure mercury lamps is directly related to the mercury (saturation) pressure, which in turn depends on the temperature of the cold side of the lamp. UV light provides maximum output efficiency at around 40°C, as shown in Figure 28. Circulating air has a large effect on pipe wall temperature, and using a higher voltage can compensate for the cooling effect of the air flow (or lower ambient temperature). Figure 29 shows a comparison between standard TUV PL - L 36W pipes of the same size and 60W "high output" pipes. You can see the compensation results for the specified power.

Lamp - life

The life of low pressure caused by mercury release (TUV) depends on the following factors:

•Electride size

• Current level

• Inert gas

• On - Off Level

• Ambient time

• Circuit

The ballast selected must match the needs of the application. Electronic pre-ballast is very useful for extending lamp life, especially if frequent lamp switching is required. Frequent switching has a big impact on lamp life.

Effectiveness factors

1 - Ultraviolet Transmittance (UVT)

An important factor influencing the effectiveness of ultraviolet sterilization is the speed of ultraviolet transmission (UVTransmission) or absorption of the medium (Absortance) in the sterilizing medium (water). Ultraviolet radiation speed and environment

The absorption rate of a substance is influenced by factors such as dissolved organic matter, inorganic matter, and insoluble suspended solids in the water.

2 - Total Suspended Solids (TSS)

The influence of suspended particles on the bactericidal effect of ultraviolet radiation is also obvious. Suspended particles can absorb and reflect ultraviolet rays, thereby preventing ultraviolet rays from affecting the DNA of bacteria and viruses. Besides.

Suspended particles also accelerate scaling and fouling of quartz casing, which affects the bactericidal effect.

3 - Granules

The size of particles in water has a greater influence on the germicidal effect of ultraviolet radiation, since larger suspended particles form shadows and dead spots that protect bacteria and viruses. This is usually the exit from the pool.

Water is more convenient for ultraviolet sterilization, and the average size of suspended particles in water should be less than 30 microns.

4 - Exposure time

Exposure time is related to the volume of traffic. UV systems are typically designed based on peak flow rates. The lower the flow rate, the longer the exposure, the greater the effective dose of the system.

Dose required for ultraviolet disinfection of bacteria and microorganisms (99.9% bactericidal effect)

The best conditions for using ultraviolet sterilizers

General standards