Installation of UV disinfection of water. The scope of water disinfection by radiation. Why is it necessary to organize disinfection of water in the pool?


An effective and reliable way to purify water from microorganisms.

Ultraviolet disinfection of water is called electromagnetic radiation in the range of wavelengths from 10 to 400 nm. For the disinfection of drinking water, the “near field” is used: 200–400 nm. In modern installations of ultraviolet disinfection, radiation with a wavelength of 253.7 nm is used.





Moreover, there are currently no microorganisms that are resistant to their destructive effect, only because of the depth of its action. There are no chemicals that can be processed or controlled, and the result is immediate.

  • It has a very low operating and operating costs.
  • And the "friend of the environment."
To properly measure the system, you need to know.

Under what conditions will UV exposure be most effective?

In most cases, to know that this last parameter is enough to know the power source and whether there are mechanical filtration systems. Specially made with especially turbid waters rich in salt or a high degree of hardness.

Inlet valve: allows water to be taken into the irradiation chamber.

The method of disinfecting water with ultraviolet light has been known since 1910, when the first stations for processing artesian water were built in France and Germany. The bactericidal action of ultraviolet rays is explained by the photochemical reactions occurring under their influence in the structure of the DNA and RNA molecules, which make up the universal informational basis of the mechanism of reproducibility of living organisms. The result of this reaction is irreversible damage to DNA and RNA. In addition, ultraviolet disinfection of water causes disturbances in the structure of membranes and cell walls of microorganisms, leading to their death.

Minimum water quality

Pre-treatment systems may consist of one or more of the following elements: sludge filters; carbon filters; iron removal systems; water softeners, filters to reduce cysts, etc. Ozone systems are used as advanced oxidation systems for the purification of water contaminated with organic molecules. Ozone is a dissolved gas injected into water to increase the biodegradability of organic molecules by disintegrating them into smaller molecules that are more easily decomposed.

Ultraviolet Water Disinfection - Benefits

  • water is not exposed to chemicals;
  • taste and other organoleptic properties of water do not change;
  • disinfection occurs within a few seconds;
  • no negative effects of an overdose of UV radiation

Installation of ultraviolet water disinfection  It is intended for disinfection of drinking water with ultraviolet (UV) radiation. Water disinfection systems destroy harmful microorganisms contained in water, making water safe for use.

Ozone allows you to destroy organic and inorganic pollutants, discoloration, elimination of unpleasant odors and disinfection from microorganisms. Ozone systems are used to treat primary water or to treat pre-treated water in chemical, biological or vacuum installations.

Another application is the treatment of wastewater containing cyanides for their chemical degradation. Water is washed off inside the tubular chamber and irradiated with ultraviolet light. Light emission varies from 185 nm to 254 nm. On request, systems that monitor the operating time of lamps and sensors for monitoring exposure are available on request.

The ultraviolet water disinfection unit is a metal case, inside of which there is a bactericidal lamp. She, in turn, is placed in a protective quartz tube. Water washes a quartz tube, is treated with ultraviolet light and, accordingly, is disinfected. There can be several lamps in one installation.

Ozone systems require an indispensable carrier gas for ozone production. Such a carrier gas may be pure oxygen or air. Typically, a plant consists of: a generator, an electrical control panel, an air or water cooling system, a contact circuit where gas is mixed with the water to be treated, and a residual ozone combustion system. Contact time and the amount of ozone required vary depending on the application and the contaminants that need to be removed.

To be effective for sterilization, an electromagnetic wave, in addition to being of a certain type, must also have a minimum intensity value to ensure a minimum dosage of water. In cases where this has not yet been provided, it is therefore necessary to ensure that the filter is installed in front of the sterilizer in order to hold solid suspensions of more than 50 microns. Depending on the flow and turbidity of the water, you can choose to filter cartridges, filter with a multilayer filter, or a combination of the two.

VG Water Disinfection Units

VG disinfection units  - VERYGOOD is widely used in drinking water treatment systems, food production, pool water treatment, as well as the processing of technical, surface and sea water. Water treatment with an ultraviolet disinfection system allows you to destroy bacteria, viruses and other microorganisms due to exposure to ultraviolet radiation with a wavelength of 254 nm emitted by a mercury-quartz lamp.

Ultraviolet disinfection

Choose the right filter for your purpose and in case of any doubt contact our technical office. The lamp power and the transparency of the quartz should ensure complete treatment and guarantee a guaranteed germicidal dose. A water distribution system should be provided in the radiation chamber to ensure homogeneous treatment. The lamp insertion system should be designed so that it is easily accessible for maintenance, possibly without having to close the water and empty the debater for normal lamp replacement. A system of sensors connected to alarm systems should be provided to control the correct operation of the system and control the lamp replacement time. The radiation chamber must be made of stainless steel. . After many years of research, it was found that the most effective disinfection process, an alternative to chemicals, is to disinfect water using ultraviolet light.

Description of UV VGUV-K water disinfection plants

The body of the VGUV-K ultraviolet lamp is made of 304 stainless steel and has a high-strength quartz case. The resource of ultraviolet elements is at least 9000 hours, the maximum working pressure is 7 atm, voltage 220v / 50Hz.

The minimum dose of ultraviolet radiation is 40 mJ / cm², which ensures the destruction of 99.9% of all microorganisms present in the source water. VGUV-K ultraviolet lamps have a power supply with a sound notification, an operating hours counter (on multi-lamp models), a nozzle in the upper part of the unit for visual inspection or installation of a radiation sensor.

Ultraviolet dose

All this without developing harmful by-products for humans and the environment. Ultraviolet disinfection power is expressed in terms of the survival of a given population of microorganisms, showing how many of these percent can reproduce after exposure to ultraviolet radiation.

Among various types of microorganisms, the sensitivity of ultraviolet light is also very different and depends on several factors. To get rid of more than 90%, depending on the desired result, if necessary, several doses will be used.

Characteristics of the VG UV disinfection unit

  Model   Productivity, m³ / hour Power, W   Enter exit   Sizes, mm   Price, cu
VGUV-K010,23 8
¼ ˝ 254x37x52144
VGUV-K020,45 14 ¼ ˝ 350x63x113195
  VGUV-K06 1,35 25 ½˝   505x63x113 245
  VGUV-K12 2,7 39 ¾˝   910x63x113 391
  VGUV-K25 5,5 80   1 ¼ ˝   905x159x289
VGUV-K36 8,0 100   1 ¼˝   1216x159x289 960
  VGUV-K45 10 150   1 ¼˝   1660x159x289 1 990

All models of UV disinfection units of the VG series are equipped with a single lamp.

By limiting devices intended for disinfection and other industrial applications, they differ among the two types of prevailing lamps used. Elements using low-pressure technology have an internal mercury gas pressure of less than 10 3 Pa, corresponding to 10 mbar. Another single emission, about 185 nanometers, is used for photolysis phenomena. Low-pressure lamps are equipped with extruded filaments, the heating of which for a short time contributes to the ignition of an electric shock.

The medium pressure elements are defined as “arc lamps” and have an internal mercury gas pressure of 10 4 to 10 6 Pa, corresponding to 100 mbar to 1 bar. In waters intended for drinking, use in combination with other oxidizing agents, such as hydrogen peroxide, is often critical in eliminating certain pesticides.

VG series devices provide water disinfection in accordance with the requirements of SanPiN 2.1.4. 1074-01 "Drinking water" at a flow rate of water with the following indicators of water quality:

  1. Total iron - not more than 0.3 mg / l.
  2. Manganese - not more than 0.05 mg / l.
  3. Turbidity - no more than 2 mg / l.
  4. Color - not more than 15 ˚С.
  5. Hardness - not more than 5.0 mEq / L.

AQUAPRO UV Series Water Disinfection Units

Ultraviolet sterilizers of the UV series are designed for the disinfection of drinking or sea water in cottages, schools, kindergartens, hospitals, swimming pools, food and beer enterprises, non-alcoholic products, on sea and river vessels during the disinfection of sea water.

Public Pool Applications

Low pressure. Medium pressure. Disinfection, as described above, has, in fact, a secondary role in this field of application compared to the fact that pressure lamps in the environment work to reduce toxic and harmful chlorine by-products. This process activates true environmental and water rehabilitation, which enhances the well-being of the environment for swimmers and staff.

This is especially important when treated water contains a high level of nutrients for bacteria, such as wastewater for treatment for industrial use, fire networks, irrigation, etc. Among the factors that may be an incentive for the use of ultraviolet rays, it is also necessary to take into account the discomfort of branch operators when handling hazardous chemicals, which should also be transported in untidy places with an increased risk to personnel. For this reason, the cost of managing chemical methods is often of great importance.

UV water disinfection UV units are made of high quality stainless steel for use in the food industry. A modern bactericidal lamp (UV lamp) with a long service life and high efficiency is placed in the casing of the installation. The design of the installation is distinguished by modern design, compactness, economy, convenience and versatility of installation, compatibility with other water purification devices, ease of operation and maintenance.

For ultraviolet rays, annual discretionary expenses are mainly determined. Modern ultraviolet systems have emission sensors that indicate the aging of the lamps or even their image and are equipped with built-in automatic cleaning devices that provide the best performance over time.

The system uses low pressure lamps and low power consumption. Chlorine is not the only disinfection option available for medium to large applications. Secondary and tertiary disinfection The vast majority of wastewater treatment plants around the world are equipped with secondary treatment with the traditional active sludge process. Chlorination is the most commonly used method of disinfecting drinking water in Italy.

The disinfection unit consists of a disinfection chamber and a power supply. The disinfecting effect of the installation is based on the well-known property of ultraviolet (UV) radiation in the range of 250-260 nm to actively destroy bacteria, viruses and other microorganisms that are often present in the input.

The UV water disinfection unit UV is designed to disinfect treated water with the following quality indicators:

This can be done in many ways; in well-known chlorination, a solution of sodium hypochlorite is simply added to water. Adding chlorine to water causes hydrochloric acid and chlorochlor: these compounds are known as free chlorine. Regardless of whether chlorine is placed directly in the water supply network, both in the tank and in water, it is necessary to provide a contact time between water and chlorine for at least 30 minutes so that chlorine can carry out its bactericidal action, oxidizing any existing living form in water.

In fact, since sodium hypochlorite solutions spontaneously lose the name of active chlorine in order to provide the “necessary” tap water in the aqueducts, progressively higher doses are used. Free and total chlorine values \u200b\u200bare released by appropriate reagents and are mainly measured using a portable colorimeter.

  1. Color no more than 20 °
  2. Turbidity not more than 2 mg / l
  3. The iron content is not more than 1 mg / l
  4. If the index is no more than 10,000 pcs / l

Performance requirements of UV UV sterilizers indoors

  1. ambient temperature from + 1 ° С to + 40 ° С,
  2. relative humidity of air up to 80%,
  3. power supply from a single-phase alternating current network 220V ± 5%, 50Hz,
  4. the pressure in the supply pipe must not exceed 8 kgf / cm2,
  5. allowable temperature of the treated water from + 1 ° С to + 40 ° С,

Characteristics of the UV Series UV Disinfection Unit

Chlorine present in available water, capable of acting as an oxidizing agent, is defined differently: free, available, active, residual. Free Chlorine An active chemical product for disinfection. One that has a hygienic ability, and that in aqueducts should not exceed certain user values, is a parameter mentioned in the rules of the aqueduct.

Total chlorine A set of chlorine based substances present in water. This is a very common parameter in the pool industry. Probably, this maximum value is acceptable only for the initial disinfection of the pipeline, and not for the distribution of water. This value should be understood at the time of removal of water to the user.

  Model Productivity, m³ / hour   Number of lamps, pcs   Power, W. Enter exit   Sizes, mm   Price, USD
  UV-1GPM 0,5 1 14 1/2”   278x80x80 160,00
  UV-6GPM 1,5 1 20 1”   560x80x80 280,00
  UV-12GPM 2,5 1   39Wx1 1”   900x190x160 445,00
UV-24GPM 5,0 2   39Wx2 11/4”   900x240x160 910,00
  UV-36GPM 8,0 3   39Wx3 1 1/2”   980x230x280 1 090,00
  UV-48GPM 10,0 4   39Wx4 1 1/2”-2”   980x230x280 1 290,00
  UV-60GPM 12,0 5   39Wx5 2”   980x280x280 2 965,00
  UV-72GPM 16,0 6   39Wx6 2”   980x280x280 3 050,00

Power supply, V / Hz - 220/50

Let's get back from texts on the Internet that. They are essentially water purifiers as a valid alternative chlorination solution for the disinfection of drinking water. Power should be correlated with the maximum effective range of use: from a minimum of 4 W to 220 or more for ranges from 1 liter per minute to 100 and above. In our models, water passes through a steel tube and quartz to protect the lamp. Replacing the lamp is very simple and can be done without interrupting the flow of water.

For sizing, consider the maximum effective flow of the housing and, using suitable pre-filters, make sure that the water passing through the separator is as clear as possible. Our experts can give you directions, even by phone.

Working pressure, kgf / cm 2 - 6.0

Brand stainless steel disinfection chamber ** S.Steel 304

Lamp life, approximately 9,000 hours

Articles about UV disinfection of water

Ultraviolet water disinfection - advantages and disadvantages
   This article discusses the main advantages and disadvantages of ultraviolet water disinfection.
Types of ultraviolet water disinfection plants
   Currently, two main types of ultraviolet water disinfection systems (sterilizers or lamps) are used for water disinfection: mercury gas discharge lamps of low (LND) and high (LVD) pressure.
Water disinfection plants
   The main parameter that determines the effectiveness of water disinfection is the dose of UV radiation.
UV disinfection of water
   The conditions for applying the method of ultraviolet water disinfection are the parameters of the source water, the experience of using UV disinfection of water.

Disinfection of water is carried out according to several technologies - chemical, using ozone, chlorine and physical, that is, reagent-free, using ultraviolet and ultrasound. The most used technology was water chlorination, but over time it was found that this method of disinfection emits a lot of by-products dangerous to human health. Chlorination technology has been replaced by UV disinfection.

Ultraviolet (UV) is the spectral part of electromagnetic waves that is invisible to the human eye. Ultraviolet radiation has more energy than violet light, which is visible to the human eye. UV radiation includes waves in the range of 100 - 400 nanometers. There is still hard ultraviolet, which includes oscillations from 100 to 200 nanometers. The energy of these vibrations is enough to destroy organic molecules. To cause fluctuations within 200-400 nanometers, special xenon or mercury lamps are used, with the help of which they everywhere disinfect water and air. The sterilizing effect of UV radiation is based on fatal damage to RNA molecules and DNA of microorganisms and other bacteria, achieved due to ruptures of chemical bonds when exposed to photon energy.

EFA UV Decontamination Equipment

Installations and systems of UV disinfection EFA are used both in industry and at individual facilities for the use of water at the stages of water treatment and water treatment.

UV sterilization plants are used in the fields of purification of drinking, industrial, wastewater and in pools.

Disinfection plants are used in urban water supply systems, water supply for villages and individual cottages, healthcare facilities, schools, kindergartens, water supply for food production.

The UVD UV disinfection unit neutralizes the majority of pathogens, such as hepatitis viruses, Escherichia coli, typhoid, cholera, salmonella and others, and yet have a large margin of reliability.

EFA UV INSTALLATION DESIGN

The bactericidal plant by design has a housing made of stainless steel, in which pipes made of quartz are placed. Bactericidal lamps are located inside such pipes. On the surface of the housing is a sensor that measures the radiation power. The design of the installation also includes an alarm system that gives sound and light signals when irradiator malfunctions are detected, when contaminated water gets inside, when a quartz cover is dirty, and in other cases.

PRINCIPLE OF INSTALLATION

Ultraviolet rays, which have a wavelength in the range of 200-295 microns - the bactericidal area of \u200b\u200birradiation has the greatest bactericidal effect. This effect causes disturbances in the membrane structure of microorganisms, as a result of which they die.

The main characteristics in the UV disinfection process are radiation intensity, radiation dose and exposure time. The product of these characteristics will determine the level of reduction in the number of microorganisms in the irradiated medium.

UV irradiation is most effective against pathogenic microorganisms. Most of these organisms die at a dose of 10-16 mJ / cm 2, a dose of 40 mJ / cm 2 will be enough to kill viruses.

The UV water purification technology easily interacts with other disinfection technologies. For example, in conjunction with ultraviolet disinfection, treatment with not large doses of ozone can be used, which will generally increase the effectiveness of disinfection.

Multi-tube UV installations compose objects with a capacity of up to 30,000 m 3 / h, used for disinfection, drinking, treated wastewater and disinfection of water in pools. Philips uses UV lamps as sources of UV radiation.

The UV equipment of series 2, 4, 6 uses amalgam UV lamps of enhanced bactericidal protection and efficiency, which allow the creation of compact UV systems with high performance. The use of amalgam UV lamps can reduce the number of lamps in the installation, reduce the metal consumption of equipment, manufacturing and installation costs, and operating costs.

FIELDS OF APPLICATION OF UV RADIATION:

  • disinfection of drinking water;
  • wastewater disinfection;
  • disinfection of industrial water;
  • pool water disinfection;
  • surface disinfection;

ADVANTAGES OF UV-VIRTUAL DISINFECTION:

  • Environmental friendliness instant disinfection does not pose a threat to human life and health;
  • Does not change the chemical composition of the treated water, the water retains its natural taste and smell;
  • Instant inactivation of microorganisms, maximum operational safety.
  • Low cost of work;
  • Low maintenance costs;
  • Low capital costs;
  • EFA installations are easy to operate.

With this disinfection technology, chemicals are not introduced into the water; after processing, the water has no extraneous odors and tastes.

When using UV radiation, spore-forming, vegetative and other bacteria are destroyed, for the destruction of which the chlorination method is not effective.

Ultraviolet irradiation of water eliminates overdose. Even with an increase in the dose, the formation of additional products and adverse changes in the properties of water are not observed. The dose of radiation depends on the amount of water consumed during processing. For example, 40–45 mJ / cm 2 is sufficient for treating drinking water, and at least 65 mJ / cm 2 for wastewater. But if necessary, the radiation dose can be increased by reducing the volume of water passing through the installation.

UV disinfection is effective almost instantly. The water passing through the installation is immediately ready for directing to the water supply system.

The disadvantages of UV disinfection include:

  • The absence of aftereffect, that is, the water after treatment at the transportation stage may be re-contaminated.
  • After the disinfection process, the water needs a fine filtration, since the cell walls (shells) of fungi, bacteria, as well as protein fragments of viruses remain in it.
  • In the case of treatment of dirty or muddy water, a drop in efficiency can be observed, also in this case, it is necessary to periodically wash the lamps from precipitation.

INSTALLATIONS OF UV DRINKING DRINKING WATER ODV (from 0.5 m3 / h to 2000 m3 / h).

The plants provide a UV dose of at least 16 mJ / cm 2, the average dose in the equipment reaches 30 mJ / cm 2, with the quality of the disinfected water: color - not more than 35 degrees, iron content - not more than 1 mg / l, turbidity - not more than 2 mg / l for kaolin, if the index is not more than 10,000 CFU / liter.

The unit is made of stainless steel.

Specifications.

  Name   Production m3 / hour   Cons. Power, W   Du branch pipe, mm   Weight kg   Overall dimensions, m   UV sensor   Flushing unit
  Series 1 - Standard
  ODV-5-0.5 0.5 15 3/4” 4   0.06 x 0.1 x 0.35 - -
  ODV-5-1 1 30 3/4” 5   0.06x0.1x0.45 - -
  ODV-5-2 2 40 1” 8   0.1x0.12x0.55 - -
  ODV-5-3 3 60 1” 10   0.1x0.12x0.95 - -
  ODV-5 5 80 2” 15   0,1x0,2x1,1 - -
  ODV-7 7 90 2” 18   0,1x0,2x1,3 - -
  ODV-10 10 200 2” 25   0.2x0.3x1.1 + -
  ODV-15 15 240 2” 32   0.2x0.3x1.4 + -
  ODV-20 20 340 2” 41   0.2x0.3x1.4 + -
  ODV-30 30 480 100 45   0.25x0.46x1.4 + +
  ODV-40 40 560 100 56   0.25x0.46x1.4 + +
  ODV-50 50 620 100 73   0.25x0.46x1.4 + +
  ODV-70 70 870 100 124   0.3x0.5x1.4 + +
  ODV-100 100 1200 150 146   0.3x0.5x1.4 + +
  ODV-130 130 1550 150 158   0.4x0.56x1.4 + +
  ODV-150 150 1850 150 165   0.4x0.56x1.4 + +
  Episode 2 - Amalgam
  ODV-200A 200 2500 200 100   0.4x0.6x1.9 + +
  ODV-300A 300 3700 200 120   0.4x0.6x1.9 + +
  ODV-400A 400 5000 300 140   0.4x0.6x1.95 + +
  ODV-500A 500 7600 300 180   0.5x0.65x1.95 + +
  ODV-600A 600 8900 300 200   0.5x0.65x1.95 + +
  ODV-700A 700 10000 400 240   0.5x0.65x2 + +
  ODV-1000A 1000 13000 400 350   0.55x1x2 + +
  ODV-1200A 1200 15500 400 400   0.6x1.1x2.1 + +
  ODV-1300A 1300 16800 400 420   0.7x1.1x2.1 + +
  ODV-1500A 1500 19500 500 470   0.7x1.2x2.2 + +
  ODV-2000A 2000 25000 600 590   0.7x1.3x2.2 + +

INSTALLATION OF UV DISINFECTION OF WASTE WATER ODV (from 0.5 m3 / hour to 800 m3 / hour).

UV installations are designed for disinfection of treated wastewater, industrial, reverse, surface water.

UV installations provide a dose of at least 30 mJ / cm2, the average dose in the equipment reaches 40 mJ / cm2 with the quality of disinfected water meeting the microbiological requirements of SanPiN 2.1.5.980-00 for treated wastewater and technological requirements for surface water.

The resource of bactericidal UV lamps is 12,000 hours.

The equipment is made of stainless steel.

Specifications.

TRAY UV SYSTEMS FOR WASTE WATER DISINFECTION.

Tray UV installations are installed horizontally along the flow of water. Depending on the required capacity, UV trays are assembled in sections with a higher capacity of up to 20,000 m3 / h. UV equipment is intended for the disinfection of purified and treated sewage, surface, reverse water.

The trough UV unit of series 5, 6 provides disinfection of water that, according to microbiological parameters, meets the requirements of SanPiN 2.1.5.980-00 for treated wastewater and technological requirements for surface water. The plants provide a UV dose of at least 30 mJ / cm2, the average dose in the equipment reaches 40 mJ / cm2.

Specifications.

  Name   Productivity, m3 / hour   The number of UV lamps in the module, pcs   Power consumption kW   Overall dimensions, m
  Series 5 - Standard
  ODV-25L 25 4 0,6   1.5x0.18x0.3
  ODV-35L 35 6 0,9   1.5x0.18x0.4
  ODV-50L 50 8 1,2   1.5x0.18x0.5
  ODV-60L 60 10 1,6   1.5x0.18x0.6
  ODV-70L 70 12 1,9   1.5x0.18x0.7
  ODV-85L 85 14 2,2   1.5x0.18x0.8
  ODV-100L 100 16 2,5   1.5x0.18x0.9
  ODV-110L 110 18 2,8   1.5x0.18x1.0
  ODV-120L 120 20 3,1   1.5x0.18x1.2
  Episode 6 - Amalgam
  ODV-60LA 60 4 1,4   1.8x0.18x0.3
  ODV-90LA 90 6 2,1   1.8x0.18x0.4
  ODV-120LA 120 8 2,8   1.8x0.18x0.5
  ODV-150LA 150 10 3,5   1.8x0.18x0.6
  ODV-180LA 180 12 4,2   1.8x0.18x0.7
  ODV-210LA 210 14 4,9   1.8x0.18x0.8
  ODV-240LA 240 16 5,6   1.8x0.18x0.9
  ODV-270LA 270 18 6,3   1.8x0.18x1.0
  ODV-300LA 300 20 7   1.8x0.18x1.1

To calculate a non-standard installation of UV water disinfection, you need to fill out a questionnaire. This will allow you to more accurately choose the equipment for your characteristics, and as a result, help to avoid the malfunctioning of the equipment.







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