- air purification and decontamination systems based on - - PowerPoint PPT Presentation

• air purification and

decontamination systems 


based on -technology

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2018

CLEAR AIR IS LIFE

Clean air is a basic requirement of life. The quality of air inside homes, offices, schools, day care centres, public buildings, health care facilities or other private and public buildings where people spend a large part of their life is an essential determinant of healthy life and people’s well-being. Hazardous substances emitted from buildings, construction materials and indoor equipment or due to human activities indoors, such as combustion of fuels for cooking or heating, lead to a broad range of health problems and may even be fatal. Problems of INDOOR AIR quality are recognized as important risk factors for human health in all countries. INDOOR AIR is also important because people spend a substantial proportion of their time in buildings. In residences, day-care centres, retirement homes and other special environments, indoor air pollution affects population groups that are particularly vulnerable owing to their health status or age.

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THE MAIN AIR POLLUTANTS

Benzene Benzene is a genotoxic carcinogen in humans and no safe level of exposure can be

• recommended. This will require reducing or eliminating human activities that release benzene,

such as smoking tobacco, using solvents for hobbies or cleaning, or using building materials that

• ff-gas benzene.

Formaldehyde Indoor exposures to formaldehyde are the dominant contributor to personal exposures through inhalation and indoor concentrations may be high enough to cause adverse health effects. Naphthalene The principal health concerns of exposure to naphthalene are respiratory tract lesions, including tumours in the upper respiratory tract demonstrated in animal studies and haemolytic anaemia in humans Polycyclic aromatic hydrocarbons Some polycyclic aromatic hydrocarbons (PAHs) are potent carcinogens and, in air, are typically attached to particles. The primary exposure to carcinogenic PAHs found in air occurs via inhalation of particles. The health evaluation data suggest that lung cancer is the most serious health risk from exposure to PAHs in indoor air.

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TODAY’S MOST COMMON WAYS OF AIR FILTRATION SYSTEM

CHARCOAL FILTER Charcoal filters fundamentally aren’t able to purify the air of volatile compounds with a molecular weight less than 40 amu (unified atomic mass unit). This means that such dangerous substances as formaldehyde (H2CO), methane (CH4), sulfur dioxide (H2S) and nitrogen dioxide (NO2) can’t be blocked by charcoal filters. As a result of the accumulation of toxins and dust a filter itself can become a source of contamination. ELECTROSTATIC PRECIPITATOR Their efficiency depends on the voltage of ionization and the geometry of precipitating electrodes. With the voltage above 7 kW electrostatic precipitators start to generate an ozone-toxic compound with very low values of MPC (0.02 mg/m3). Ozone on its own is hard to catch, that’s why the electrostatic filters have low ionization voltage and, therefore, aren’t effective at capturing aerosol particles. HEPA-CLASS FILTERS HEPA-class filters only capture particles larger than 300 nm, which doesn’t solve the issue of removing the most dangerous nanoparticles. Meanwhile all separated microflora is being concentrated on the filters. OZONATOR Ozonators’ abilities to oxidize the pollutants like pollen, dust, carbon oxide, formaldehyde are frankly speaking

• exaggerated. Ozone’s ability to oxidation in concentrations levels of 0.2-0.4 mg/m3 can't be effective because the

inhibitory action on microflora can only be possible at considerably higher (10-20 times) concentrations which are extremely dangerous for people.

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THE RANGE OF CONTAMINANTS

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Air contaminants which are difficult to remove

TRADITIONAL METHODS OF PURIFICATION

All air pollutants can be divided by particle size. According to the European Environmental Agency (EEA) the nanoscale particles are the most dangerous to people. These include the molecular organic compounds that can get directly into the bloodstream (4-20 nm), the protein macromolecules of the major causative agents of acute allergies (20-40 nm), solid and liquid aerosol nanoparticles that aren’t removable by lungs (20-100 nm), viruses (20-300 nm), bacteria (from 100 nm).

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Pre-filters - air pollution by volatile organic compounds. Electrostatic filters - effective filtering modes emit large amounts of ozone. Carbon Filters - not purified air from volatile compounds having a molecular weight of less than 40 AMU. Require frequent replacement. HEPA filters - microflora accumulate, do not capture the particles of less than 300 nm. High cost. "Plasma filters" - emit ozone. The low percentage of cleaning. TRADITIONAL METHODS OF PURIFICATION

DISADVANTAGES OF TRADITIONAL WAYS OF PURIFICATION

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MODERN REQUIREMENTS FOR AIR PURIFIER

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High-tech AIR PURIFIERS must provide:

• 1. Air purification from the aerosol particles less than 300 nm in size
• 2. Air purification from volatile organic compounds with atomic mass less than 40 amu
• 3. Removal of pathogenic organisms with its complete inactivation
• 4. Removal of ozone, carbon monoxide, nitric oxide
• 5. Low operating costs
• 6. High stability of performance characteristics during low-term work

THE REACTION OF PHOTOCATALYSIS IN DETAIL

TiO2 is a semiconductor. In such compounds the electrons can be in two states: free and bound. Normality of the electron is bound, i.e. it is associated with the ion of crystal lattice substance forming a strong chemical bond. It is necessary to apply more than 3.2 electron volts (eV) energy to "pull out" the electron from the lattice. To our joy, that is the amount of energy a light quantum carries with a wavelength less than 390 nM. So, the quantum of light "knocks" an electron from the lattice forming an electronic vacancy or simply "the hole." The electron and the hole are moving actively inside the TiO2

• particles. As a result of the movement they are either recombined

(meet each other, "marry each other" and returned in a bound state) or erupt on the surface and immediately are captured by it.

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Both the hole and the electron are incredibly reactive. All-over surface catalyst is a powerful field of

• xidation. The oxygen contacting the catalyst surface receiving a free electron as a gift, gives rise to
• xidative radical O-, which is able to destroy (oxidize) any organic compound. Hole in turn reacts with the

first organic compound encountered on the surface. Hole pulls out from the connection structure missing her electron, thereby resolving the compound into water and carbon dioxide. Every time replaced “used-up” pairs electoron-"hole" rises on the catalyst surface like bubbles in a champagne glass, new pair free. The oxidation process will go on until the light is incident on the catalyst.

TIOKRAFT

• TECHNOLOGY INNOVATIONS
• Catalyst. TiO2 with crystalline modification of

anatase and containing minimum impurities has the highest photocatalytic activity. In our devices we use such catalyst in the form of ultrafine powder of own production. A particle size is about 40 nm. Just in this state the catalyst is highly active and has a maximum surface for the reaction. The carrier (the structural component which surface is covered with TiO2). The carrier material requirements are quite rigorous: it can't be made of organic materials as any

• rganic matter decomposes under the ultraviolet

radiation, it needs to transmit ultraviolet which means that should be transparent and lastly it must be small size but has a huge surface to contact the catalyst and air.

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USAGE OF A POROUS QUARTZ GLASS AS A CARRIER OF THE PHOTOCATALYST (PATENT № RU 2151632 C1)

PHOTOCATALYTIC FILTERS BASED ON POROUS GLASS

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Efficient use of photocatalisys in air clearing systems “TiVeil” is defined by the use of highly active catalyst and its unique carriers. The carrier can be formed from organic materials or metals. For better contact with air it must have a porous structure. TiVeil offers to use a porous glass as the photocatalyst carrier. This carrier is inert to the action of the photocatalyst, air can readily leak in through it. The carrier provides good adhesion of the catalyst and has sufficient structural strength

ADVANTAGES OF APS BASED ON TIOKRAFT-TECHNOLOGY

➢ Purify the air from all aerosol particles, bacteria, viruses and mold spores of size from 30nm with the efficiency close to 100% in a single session ➢ Oxidization of any organic compounds ➢ Completely inactivate all types of pathogenic microflora without accumulating on filters ➢ Removal of nanoscale aerosol without HEPA-filter using ➢ Preclude ozone, carbon monoxide, ammonia, nitrogen oxide ➢ Effectively molecular purification without absorbents using ➢ Usage of high-capacity soft UV-irradiation ➢ Capability of combined usage of photocatalysis, corona discharge and coal adsorption advantages ➢ Main filter blocks self-cleaning ➢ Air purification and disinfection without hazardous UV in presence of people

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CONVECTION K-SERIES

Designed for disinfection and molecular air purification in small premises. Noiseless. Recommended to be used in areas with constant presence of people, including highly allergic individuals.

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TiVeil K10 TiVeil K20

COMPLEX CLEANING P- AND LAM-SERIES

Designed for air disinfection and cleaning from dust, aerosol particles and organic volatile compounds in large premises. Can be build in a system of supply-and-exhaust ventilation

• r work independently as

recirculators.

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TiVeil P200A/P350A TiVeil P350AE TiVeil P100

TiVeil P350AE

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TiVeil P350AE PURIFICATION SCHEME

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• 1. Pre-purification filter
• 2. Fan

3-4. Electrostatic filter 5-6. Photocatalytic filter

• 7. Сatalytic filter
• 8. Carbon monoxide

purification unit

• 9. Power supply and signalling

Our differences from analogues: 1.Combined use of the photocatalysis advantages, corona discharge. 2.Use of the porous glass as a photocatalyst carrier 3.High power applied UV (A) light (36 W) 4.Use of highly efficient electrostatic filter with unipolar deposition of charged particles 5.Main filter blocks self-cleaning

PROPERTY SHEET

DEVICE CATEGORY CONVECTIONAL COMPLEX CLEANING DEVICES RECIRCULATORS LAMINAR 1 Model K10 K20 P100 P200A P350A P350AE LAM 250 LAM 500 2 Capability, m3 10 20 50 80-200

150

120-400 250 500 3 Optimal room space, m2 up to 12 up to 20 up to 30 up to 50 up to 60 up to 100 0.36* 0.72* 4 All types of microorganisms inactivation YES 5 Complete removal of organic pollutants (without accumulation

• n the filter)

YES 6 Overall dimension, mm 190x 44x520 250x 44x520 175,5х 110х640 520x 180x700 460х 210х600 520x 300x1060 596x 560x290 596x 1196x290

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* the area of the laminar field section, sq.m

SPECIAL SOLUTIONS ON AIR PURIFICATION SYSTEMS

➢HOSPITALS ➢HOTELS ➢OFFICE BUILDINGS ➢RESTAURANTS ➢PUBLIC TRNSPORT (BUSES, TRAINS)

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AIR PURIFICATION AND DISINFECTION DUCT SYSTEMS

➢HOSPITALS ➢HOTELS ➢OFFICE BUILDINGS ➢RESTAURANTS

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productivity CBM/H filter installed filter is not installed

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AIR PURIFICATION AND DISINFECTION SYSTEMS in HOTELS, OFFICES

Fundamental unit Applications

➢PUBLIC TRNSPORT (BUSES, TRAINS, etc.)

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Air purification system on public transport tested in passenger coaches of Russian Railways Company and Moscow Underground (metro) Air purification systems can be customised

AIR PURIFICATION AND DISINFECTION SYSTEMS on TRANSPORT

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AIR DISINFECTION OF VEGETABLE STORES

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COMPLEX CLEANING OF THE SUPPLY AIR OF BUILDINGS

louvered grille adjustable damper dust filter heating/cooling unit catalytic systems skids fan catalytic reactor/filter Electrostatic precipitator control sensor system of modes

air vent influx

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ADVANCED NEW DEVICE

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ECO FURNITURE MODELS

AIR DISINFECTION AT 
 RUSSIAN NATIONAL PLANT QUARANTINE CENTER

Tests were performed by the FSUE "Russian national plant quarantine center" members. TEST CONDITIONS:

• 1. Area adjoining spaces – 6/302

• 2. Ceiling height – 3,0 m

• 3. Doors are periodically opened,

and windows are closed


• 4. Continually present number of

people – 2-3


• 5. Used photocatalytic purifiers

(TiVeil P350AE) -1, (TiVeil K40) -1 EVENTS DESCRIPTION IN SAMPLE COLLECTION: A – TiVeil K40 placement location
 B – TiVeil P350AE placement location
 C – half-opened doors

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ENVIRONMENT CONDITION BEFORE THE DEVICE SET UP MICROBIOLO GICAL AIR QUALITY STATUS IN 7 DAYS AFTER THE DEVICE WAS SWITCHED ON

AIR DISINFECTION IN THE CORONARY 
 CARE UNIT OF THE MUNICIPAL CLINICAL HOSPITAL

MICROBIOLOGICAL TESTS RESULTS The efficiency of air disinfection was determined by comparing the number of colony-forming units (CFU) indoors before switching

• n and after turning off the devices. The sampling points were

located over the whole floor area evenly. Contouring was realized by tracing a spatial interpolated grid according to Shepard's Method. TEST CONDITIONS:

• 1. Floor space - 160 m2

• 2. Ceiling height – 3,5 m

• 3. Doors and windows – are periodically opened 

• 4. Continually present number of people– 10-15

• 5. Number of installed photocatalytic purifiers (TiVeil P350AE) -1

• 6. Air-cleaner capacity by the cleaned air – 120 m3/h

EVENTS DESCRIPTION IN SAMPLING: A – device placement location
 B – beds without patients
 C – toilet
 D – half-opened windows E – communicating door opened
 F – council at the patient's bedside
 G – bad patient

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INITIAL STATUS MICROBIOLOGICAL AIR QUALITY STATUS IN 3 DAYS AFTER THE DEVICE WAS SWITCHED ON

MICROBIOLOGICAL TESTS RESULTS (continuation)

NOTE:


• 1. The average CFU-value decreased to

200-250 units/m3.


• 2. The worse station of the air quality was

found in G-point where the bad patient was located and in F - point where the board of five doctors took place at the bedside of the patient. NOTE:


• 1. The average CFU-value decreased to 50-100

units/m3.


• 2. The cleaning efficiency is largely

determined by the gas-dynamic flows that are generated during the air-cleaner operates.

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MICROBIOLOGICAL AIR QUALITY STATUS IN 6 DAYS AFTER THE DEVICE WAS SWITCHED ON

CHECKING RESULTS OF THE CONTROL 
 AEROSOLS PARTICLES FILTRATION EFFICIENCY

The filtration efficiency of the system was determined by measured results of the differential distributions

• f the aerosol nanoparticles countable concentration by the size at the input and output from the cleaning

system filtration area using the scanning electric mobility analyzer SMPS3936 made by TSI Inc. (USA).

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CHECKING RESULTS OF THE CONTROL 
 AEROSOLS PARTICLES FILTRATION EFFICIENCY (continuation)

THE EXPERIMENTS SET THAT THE AEROSOL PARTICLES ARE CAPTURED BY THE SYSTEM WITH EFFICIENCY CLOSE TO 100% WITHIN THE RANGE OF THEIR SIZES FROM 20 NM. BACTERIA AND VIRUSES ARE CAPTURED WITH THE SAME EFFICIENCY , AS MOST OF THE STUDIED BACTERIA HAVE THE SIZE OF 0,5-5 ΜM AND VIRUSES 60-300 NM.

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DISINFECTION OF DRINKING WATER TANKS

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A310, 5, bld 6, Barklaya st., Russia, 121087 Web-site: tiveil.com E-mail: info@tiotechnology.com Tel.: +7 910 434-39-44

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