Air Treatment

Heating, ventilating, and air conditioning (HVAC) systems have had ozone applied to them on a large scale, there are some major reasons behind this, such as:

                -The public has become growingly aware that indoor air quality (IAQ) can be can be improved

                -Heightened intolerance towards smoking along with the increased knowledge that common chemicals can negatively impact IAQ

                -Technological advancements within the ozone industry (particularly in ozone generators/monitors) make system controls more realistic

                -Payback economics: savings in energy along with other factors

The main industrial sectors to heavily invest in ozone air treatment are gaming institutions like casinos, bingo halls, and card rooms, as well as applications within the hospitality industry (restaurants, showrooms, bowling alleys). These areas have seen high returns investing in air quality, in large part due to the common chemicals in these areas that would lower overall air quality (ex: cigarettes being allowed in most gaming buildings). Many smaller projects have also been applicated to places like taverns, designated smoking areas and advanced technology facilities where complete-building air treatment is not deemed necessary.

Most voiced objections towards ozone are in reference to its overall safety. When using ozone in public areas, the concentrations must be kept below the harmful levels. Self-controlling systems, that combine advanced ozone generation with ozone monitoring systems make this increasingly possible. However, among cognizant agencies, we do see discernment as to what should be deemed the safe levels and suitable ozone concentration guidelines. For areas where people gather together, the US FDA has stated a limit of .05 ppm. HVAC systems are programmed with automatic controls to typically stay under concentrations of .03-.05 ppm. However, these concentrations are lower than what we see occur naturally in outdoor settings, in most regions. “For ozone injected into HVAC systems it is absolutely necessary to include ozone sensors to automatically control the ozone concentration in areas where the public congregate.”

2 Major Applications

                -Casinos: Gaming facilities are continually growing worldwide, and a majority of resorts are now including them. Smoking is typically found in high quantities in most casinos, and it is a major irritant for customers as well as employees. Ozone is incredibly effective in getting rid of the unpleasant smell caused by smoking, due to the variety of VOC’s that can be found in the smoke.

                -Dubai International Airport: Odds are this is the largest ozonated HVAC system in the world, with the air treatment being applicated to all of the buildings. The airport has over 300 ozone sensor/controllers along with VOC sensor/controllers. There are many ozone generators spread throughout the HVAC ductwork, treating virtually all of the interior spaces. Preliminary findings from the Dubai International Airport were passengers and employees noted a pleasant air smell, as well as improved air quality. The airport also cut costs by spending less on maintenance, mainly because they no longer had to replace carbon filters.

More information on ozone and Air Treatment, can be found here.

Sources: Rip Rice, from the IOA https://www.ioa-pag.org/

Ozone used to remove odor from Sports Equipment

One of our customers who uses ozone for a unique application created the following video. This is a great explanation of one of the many uses for ozone.

Ozone has many applications in air treatment. While care and caution must be taken, ozone gas in air is very effective at removing odor, eliminating bacteria, and even prolonging the shelf-life of food. More info on ozone use in air treatment is at the link below:

https://www.oxidationtech.com/applications/air-treatment.html

Ozone air disinfection

Ozone is a very effective disinfectant and is effective against all viruses and bacteria. Ozone operates according the principle of oxidation. Ozone (O3) is instable and will revert to oxygen (O2) on it’s own, or when it contacts something it can oxidize. Living cells found in bacteria and viruses are very susceptible to oxidation. As ozone enters cells, it oxidizes (destroys) their components including the cell wall. Once ozone has entered, the process destroys all essential components (enzymes, proteins, DNA, RNA). When the cellular membrane is damaged during this process, the cell will fall apart. This is called lysis — the disintegration of a cell by rupture of the cell wall or membrane. From this point there is no recovery and the pathogen is inactivated. Due to the direct oxidation ozone causes (loosing the oxygen atom) there is greater energy to ozone oxidation vs other comparable chemicals.

Most commonly ozone is used dissolved into water. When dissolved in water ozone increases the ORP (oxidation reduction potential) of the water, all of the water is now a sanitizer with electrical potential for pathogen inactivation through lysis. When the water (with sufficient ozone levels) contacts a pathogen it will react with that pathogen inactivity it. This is extremely efficient and effective.

Ozone can also be used in the ambient air in the gaseous form for antimicrobial applications. Ozone in air is a spacial consideration.  The air is not charged as water is when ozone is dissolved in water. Air simply has ozone in within it.

An example. 0.1 ppm ozone is the safe limit for humans in air for an 8 hour period of time.  20.0 ppm is a relatively high level used in rooms at times for disinfection.  This means 20 parts of every 1 million parts of the air are ozone.   This ozone molecule needs to react with a pathogen cell to inactivate it. The likely-hood of this in a short period of time is low. 

As ozone reverts back to oxygen quickly and frequently, longer the exposure times increase the odds of ozone reacting with the pathogen. Ozone reverts back to oxygen faster (shorter half-life) as temperatures and humidity increase. Therefore, higher ozone levels, higher temperatures, and higher humidity will increase the opportunity for ozone to react with pathogens on surfaces.

Ozone levels used for sanitation should be chosen based upon the goals and requirements for this space, and the ambient conditions present. Reasonable levels of 5-10 ppm are commonly used. Higher levels are also possible. Keep in mind any natural rubber materials will be damaged by ozone use at high levels over long periods of time. Therefore, keep ozone levels and frequency of use reasonable.

Attached are documents on the use of ozone in air for antimicrobial uses. These are great resources to use to ensure ozone is the right solution for your application. Should you need more specific information let us know, we will provide what we have.

A few options we have for ozone sanitation in rooms are listed below. These systems can also all be used in an HVAC system to maintain low levels of ozone in a building for room air disinfection.

HTU-500

0.5 g/hr ozone production

https://www.oxidationtech.com/products/ozone-generators/o3/htu500.html

The HTU-500 with an internal air pump will produce 0.5 g/hr ozone from 3 LPM air.

Adequate in a 5 m3 space for short-term sanitation applications.

Adequate in a 100 m3 space for low occupied spaces for air disinfection

HTU-500 installed in HVAC system for room air disinfection
HTU-500 installed with HVAC system. Ozone is plumbed into the HVAC system after the fan and after the furnace filter.

VMUS-4 = $1,335

2 g/hr ozone production

https://www.oxidationtech.com/products/ozone-generators/o3/vmus4.html

The VMUS-4 with internal air pump will produce 2 g/hr ozone from 3 LPM air.

Adequate in a 22 m3 space for short-term sanitation applications.

Adequate in a 450 m3 space for low occupied spaces for air disinfection

VMUS-4 wall mount ozone generator for use with HVAC system
VMUS-4 wall-mount ozone generator

VMUS-4 + pump + Air drer = $2,455

4 g/hr ozone production

https://www.oxidationtech.com/products/ozone-generators/o3/vmus4.html

https://www.oxidationtech.com/vmd-8.html

The VMUS-4 with external air pump will produce 4 g/hr ozone from 8 LPM air flow

Adequate in a 45 m3 space for short-term sanitation applications.

Adequate in a 900 m3 space for low occupied spaces for air disinfection

VMUS-4 ozone generator with air dryer and pump for room air disinfection
VMUS-4 installed with an external high-flow air pump and air dryer.

VMUS-4 + Oxygen = $2,682

10 g/hr ozone production

https://www.oxidationtech.com/products/ozone-generators/o3/vmus4.html

https://www.oxidationtech.com/max-series.html

The VMUS-4 with oxygen concentrator will produce 10 g/hr ozone from 6 LPM oxygen

Adequate in a 100 m3 space for short-term sanitation applications.

Adequate in a 2,000 m3 space for low occupied spaces for air disinfection

Oxygen can also be provided from external source, or from a portable oxygen bottle.

VMUS-4 installed with an oxygen concentrator to produce 10 g/hr ozone.

Ozone monitoring and control

For control purposes, an ozone monitor can be used. This can turn the ozone generator ON/OFF based on safe levels of ozone, or verify that ozone levels achieved the desired level for disinfection.

OS-6 remote ozone monitor

  • 0-20 or 0-50 ppm range
  • 0.01 ppm resolution
  • 10% accuracy
  • 0.1 ppm relay, and 1 user-settable relay

The OS-6 ozone monitor is the perfect device for ozone level controls. This unit has 2 separate relays, one set to 0.1 ppm for human safety, while the other can be set for any set-point desired.

OS-6 Remote ozone monitor

https://www.oxidationtech.com/products/ozone-monitors/fixed-ozone-monitor/os6-ozone-monitor.html

S-200 handheld or remote ozone monitor

  • 0-0.5, and 0-10 ppm ranges
  • 0.001 ppm resolution
  • 10% accuracy
  • Min/Max/Average on the screen
  • Optional on-board data logging with the S-500

The S-200 ozone monitor will measure ozone as a handheld or with an optional remote sensor. Min/Max/Average ozone levels displayed on the screen along with current ozone levels.

Aeroqual Series-200 ozone monitor
S-200 Aeroqual ozone monitor

UV-106L

  • 0-100 ppm range (optional 0-1,000 or 0-10,000 ppm ranges)
  • 0.0001 ppm resolution
  • 2% accuracy

For higher ozone levels with greater accuracy the UV-106L ozone analyzer can be used to measure and control ozone levels. The UV-106L includes built-in data-logging and accuracy to within 2% of reading. With a faster warm-up period, and greater accuracy the UV-106L is a great option for portable systems or systems that require greater accuracy.

https://www.oxidationtech.com/uv106l-ozone-analyzer.html

UV-106 Ozone analyzer

Ambient ozone destruct

Ozone levels in the room can be quickly converted safely back to oxygen via an ambient ozone destruct unit. The CDA-250 is a great device for this purpose. It flows 250 CFM air through the unit and destroys at least 90% of the ozone via a catalytic material in each pass. Using this device will lower ozone levels to a safe level quickly for faster turn-around time for your ozone disinfection room or chamber.

Ambient air ozone scrubber
CDA-250 Ozone Destruct Device

Gas gas can be an effective disinfectant in the gaseous form, but must be used safely and with proper caution. Should you have questions on this application, or any details, please contact our office.

For additional information see papers at link below on this ozone application.

Ozone used to treat hotel pillows to reduce allergens

A high end hotel in India is implementing the use of ozone to treat not only linens and hotel rooms, but also the pillows used in guest rooms.  As pillows are re-used and can absorb allergens that may bother the next person to lay their had on that pillow, the hotel desired a method to remove any potential allergens from the pillow.  They chose ozone as this technology.

Read full story HERE or below:

The Imperial introduces allergy-free ozone treated pillows in guest rooms

he Imperial, New Delhi recently added yet another feather in its cap by disinfecting and deodorising guest room pillows and linen with Ozone Treatment, a cutting edge technology towards providing microbe free linen to their guests while they soak in its historic and iconic luxury. 

In order to achieve high standards of hygiene and safety of linen in the guest rooms, specially designed, equipment based on ozonation technology for disinfection has been brought in from Europe which disinfects with forced ventilation in an environment saturated with the oxidizing gas ozone. O3 (ozone) which is a natural gas with a great disinfecting power that has a strong action on bacteria, virus, moulds, fungus and mites and a deodorant action. This not only eliminates these microorganisms and deodorizes but also makes pillows/duvets an extremely hostile environment for dust, mites and parasites. It leaves on linen at an immediate sensation of freshness and cleanliness. 

Vijay Wanchoo, Sr. Executive VP and GM, The Imperial New Delhi expressed his views on the launch of this proud initiative saying, “Moving towards providing a completely safe environment, an enjoyable stay, a sybaritic rest of the senses and an enhanced experience, The Imperial has launched the Sanipill Ozone Treatment program. This is to significantly reduce the impact of potential irritants allowing guests to rest comfortably, sleep better and awake refreshed. Our hotel is treating the pillows, duvets and all linen articles by ozonation process, which is an effective way of disinfecting and deodorising them as they are generally loaded with various micro-organisms because of prolonged usage by guests.” 

The effectiveness of the Sanipill ozoniser as per the claims by the manufacturer of the equipment in bringing significant reduction in the total microbial load has been verified by the in-house Microbiology Lab of The Imperial. Detailed microbiological studies were conducted for the untreated and treated pillows and linen. The results of subsequent experiments showed significant reduction of microorganisms post treatment of the pillows and linen with the Sanipill Ozoniser, supporting the ‘strong disinfecting effect of ozone treatment’.

In most of the luxurious hotels, only changing of pillowcases is done on a regular basis. The pillow with freshly laundered cover is used by subsequent guests using the same room, leading to risk of infection and transmission of various kinds of virus, bacteria, mould and fungi. In such a situation, washing and chemical-sanification of ‘pillows’ is done very seldom. The Imperial has therefore initiated a revolutionary technology to provide its guests absolute safety from cross contamination and infection. n and infection. 

Ozone for air treatment

Ozone used to “Detoxify Environment” in Washington DC

This week the US House of Representatives new Speaker of the House, Paul Ryan, starts his new job.  Along with starting his new job he get’s a new office.  The office recently vacated by John Boehner, a smoker.  Interestingly, Paul Ryan mentioned the use of ozone machines to “detoxify the environment” to clear the air.  While great news that the use of Ozone Machines goes mainstream, I do find it humorous that Paul Ryan is trying to Detoxify the Environment in Washington DC.  In my opinion it will take much more than ozone to detoxify the environment there!

Read more on this story from the NY Times below and follow this link.

WASHINGTON — There are many things Americans cannot yet know about Speaker Paul D. Ryan’s plans for his fancy new digs on Capitol Hill. Dark curtains or sheers? Memorabilia from the 2012 presidential campaign or his first House race in 1998? Will he hang a poster of his favorite band, Rage Against the Machine?

One thing is known: He wants to get rid of the smoke left behind by his predecessor, John A. Boehner. “You know when you ever go to a hotel room or get a rental car that has been smoked in? That’s what this smells like,” Mr. Ryan said in an interview on NBC’s “Meet the Press” on Sunday in reference to the speaker’s suite, which is of perhaps even greater interest to Mr. Ryan because he sleeps in his office.

 

Mr. Ryan said he would most likely rely on an “ozone machine” to “detoxify the environment” of the palatial speaker’s office, which he apparently views as about as habitable as a smelly motel off the interstate in 1978. Deeper cleaning and a carpet change would come later, and taxpayers would be expected to foot the bill.

This story even made the front page of the Drudge Report over the weekend.  See image below, click on image for larger view:

Even Paul Ryan advocates the use of ozone machines!
the use of Ozone Machines made the main stream!

Ozone for Air Treatment