What is so important about ozone destruction?

Posted by Brialle Veldman on June 13, 2017 under Air Treatment & Odor Control | Be the First to Comment

When it comes to assisting customers with their applications; One the most important factors we consider is how to safely destruct the off-gas ozone. Below, we  have listed some questions to help us understand what to search for.

  1. Why should anyone use an ozone destruct unit?

The use of an ozone destruct unit is an essential step to complying with safety measures, especially when handling higher concentrations of ozone. The reason for this is because the oxidating potential of ozone can harm human tissue. It can be harmful to people, pets, and other living organisms if not handled properly. An ozone destruct unit will safely destroy an excess ozone that is present from the contact tank or emitted in the ambient air from an enclosed space.

  1. Which ozone destruct unit do I need?

All ozone destruct units are designed to perform the same task, which is to destroy ozone. However, there are differences to each situation that will affect the performance of each within a specific application. Here are a few factors to consider when narrowing down the best destruct unit:

  • Will you require a high concentration ozone destruct unit or an ambient air ozone destruct unit?
  • Will the air stream be a wet air stream or dry air stream?
  • What is the initial ozone concentration and what is the desired outlet ozone concentration?

*Follow the information to narrow down your search to determine the right product.

  1. What is a high concentration ozone destruct unit?

ODS-1 Ozone Destruct Unit                                   ODS-2 on Electric Motor

The term high concentration refers to any ozone concentration above human permissible level. Usually this means the excess ozone is a by-product of an ozone process. A few examples of this may be:

  • Ozone off-gassed from a contact tank
  • Ozone within a disinfection chamber
  • Ozone in a vent hood

At Ozone Solutions, we market our high concentration Ozone Destruct Units with the prefix ODS. Our ODS Ozone Destruct Units will not operate with ozone levels beyond 20% by weight. The ODS are passive devices meaning there is no integrated device to move air through the unit, air flow must be provided by the customer application. These destruct units are sized on air flow in CFM. For example, the ODS-3 is a high concentration ozone destruct unit that is rated for 3 CFM of air flow.

4. What is an ambient air ozone destruct unit?

NT-70NT-70 in laboratory

We also designate our ambient air ozone destruct units with the prefix NT. Our NT ozone destruct units have integrated fans to move through the destruct unit. These units are sized on air flow in CFM. For example, the NT-70 is an ambient air ozone destruct unit that moves 70 CFM of air. Ambient air ozone destruct units operate within environments such as the name implies, in the ambient air. These devices are used to remove ozone within occupied space, or space where ozone levels need to be lowered for a process. A typical application may be within a laboratory chamber where ozone will negatively affect a test or process. A few other applications apply to this such as:

  • Micro-array test chamber
  • Small occupied space with ozone levels above the OSHA levels
  • Disaster remediation pack-out rooms
  • Hotels

5. What is a wet air stream?

ODS-1H    

A wet air stream is any air stream that uses water to create aqueous dissolved ozone.  Many times, customers use this on an ozone contact tank or water storage tank. This air will be moisture laden and have a high humidity level. The catalyst material inside the Ozone Destruct Unit will be destroyed by condensation. To destroy ozone in a wet air stream the Ozone Destruct Unit must be manufactured to prevent moisture from condensing on the catalyst. Also, a wet air stream must pass through the Ozone Destruct Unit at 1/2 the flow rate of dry air to achieve the same efficiency. Ozone Destruct Units designed to operate in a wet air stream must be larger, and hold more catalyst to work efficiently.

At Ozone Solutions we designate Ozone Destruct Units designed for wet air streams with the H suffix. For example, the ODS-3H would be suitable for a wet air stream, while the ODS-3 would only be suitable for a dry air stream.

ODS-H destruct units are manufactured with a heater to warm the air and catalyst inside the Ozone Destruct Unit. Also, they feature an air gap that will equalize the air flow and speed. There is also piping used in the ODS-H series to ensure the air is properly warmed prior to contacting the catalyst, and for the potential of condensed moisture to drop via gravity back into the incoming tubing.

What is a dry air stream?

A dry air stream is any air stream without condensation. Normal ambient humidity levels up to 85% should be considered a dry air stream. Any of ozone solutions ozone destruct units will be suitable for a dry air stream.

How do I determine the effluent ozone concentration?

This is an important but commonly overlooked factor when choosing the right destruct unit. All our units are rated based on air flow in CFM. There is also an efficiency rating for each unit. Either 99.96% for the ODS series, or 99% efficiency for the NT-Series. This efficiency rating is a the maximum air flow for each device. For example, the NT-70 will destroy 99% of the ozone gas in a 70 CFM air stream.

What happens to the ozone?

The ozone is catalyzed back into oxygen through a catalytic process using the ozone destruct catalyst. This is a catalytic reaction requiring no consumables.  The catalyst used inside all the ODS is a proprietary granular media. The NT Series of destruct units use a proprietary honeycomb material to destroy ozone.

Catalyst in BucketODS Unit with Catalyst ODS Catalyst

Treating Harmful Formaldehyde Levels with Ozone

Posted by Brialle Veldman on November 4, 2016 under Air Treatment & Odor Control | Read the First Comment

Treating Harmful Formaldehyde Levels with Ozone:

            Formaldehyde is a colorless, flammable, generally pungent, yet sometimes odorless gas that when present in very small concentrations is not a major concern. However, it is present in public areas such as public buildings and many working environments that we are exposed to everyday that can be harmful. Formaldehyde is inevitably constant at low levels, usually less than 0.03 parts per million (ppm), in both outdoor and indoor air. Naturally occurring in the environment, it is an essential metabolic intermediate in all cells. With an occupational exposure limit value of .94 mg/m3, formaldehyde was considered safe against sensory irritation in the airways. The direct result from automobile exhaust is a major source of this chemical. It is also a component in tobacco smoke and those breathing it in as secondhand smoke are exposed to a higher level. Variables such as temperature, humidity, and air exchange all play a role in that concentration level. This chemical is generally used as a drying or curing agent in materials and thus release VOCs as part of this process. VOCs (volatile organic compounds) pose a health risk to everyone.                                                                                                                                                                                                        Why you may ask? VOCs are extremely hazardous by constituting side effects such as eyes, throat, and nose irritation, frequent headaches, nausea, and damaging the central nervous system. This problem may be lurking in your home or office building as you read this. For instance, purchasing pressed-wood shelves, laminate flooring, shampoos, etc all contain some form of formaldehyde. If your product does not say “readily biodegradable” and “nontoxic to humans and aquatic life” then it is likely that the product contains formaldehyde. What is most daunting is that this chemical can be odorless in some forms at low concentrations and a person can experience the off-gassing of formaldehyde and be unaware of it, which can lead to health concerns. Formaldehyde is permeated into the drywall or composite material in the area; therefore it is assumed that VOCs from the formaldehyde will continue to linger for several months to even a year. A crucial alternative to utilize is ozone for this application. Ozone, being a reactive gas, is an effective solution because it pulls electrons to oxidize. The first step is to access the space for the major source of VOCs. Secondly, remove the problematic furnishings, and then lastly, treat the exposed air with ozone. Call us for more details for a healthier environment!

Funny Formaldehyde

 

 

References

“Formaldehyde Exposure in Homes: A Reference for State …” N.p., n.d. Web. 4 Nov. 2016.

Onion Storage Ozone Treatment

Posted by Cade Kats on October 23, 2015 under Air Treatment & Odor Control | Be the First to Comment

Ozone in Onion Processes

Ozone kills microorganisms which can cause mold. So using ozone in onion storage room will prevent molds on onions and will increase onion shelf life. Ozone also prevents surface discoloration in onions.Another interesting advantage of using ozone in onion storage is decrease in onion weight loss. Ozone treated onions have less weight loss compared to untreated onions [1]. Ozone also kills Asperigillus Niger which Causes Black Rot Disease in Onions [2].

In the following, an installation of Ozone Solutions in Washington State has been presented. The facility is 120 ft wide and 350-ft long and has 2 bays.

blog pic 1 blog pic 2

Ozone Solutions Installation at Ventco of Kennerwick, WA

[1]. horttech.ashspublications.org/content/10/3/608.full.pdf , accessed Oct. 2015.

[2]. http://www.ozonesolutions.com/Ozone-Research/Ozone-Effect-On-Asperigillus-Niger-Causing-Black-Rot-Disease-In-Onion

Greenhouse production aided by ozone

Posted by Kaleb Jensen on June 24, 2015 under Air Treatment & Odor Control | Be the First to Comment

There are many benefits of ozone for the agriculture industry. One of the obvious ones is air treatment and odor control. As many states are allowing/considering the medical use of marijuana, the demand for growing marijuana has increased significantly. One of the problems for the growers is the strong smell of the marijuana. The smell during the flowering is very strong and it is objective to many people. In addition to marijuana, there are dozens of plants that can produce offensive odors when mass produced indoors.

Several strategies, like using carbon filters, have been employed by growers to mitigate the smell. Filters need to be changed frequently when they are saturated with odor. Ozone has also been employed for the smell removal. The reaction between ozone and the odor is very fast and breaks down the smell quickly. Ozone also disinfects the air and kills the contamination and molds.

There are some histories of unsuccessful applications of ozone for the farms. Most often, the unsatisfied users complain ozone has been harmful for the people or the plants. The myths come from misunderstanding the ozone application and safety levels. Ozone generators should be carefully sized based on the area of the farm, to be safe for the plants and the people.  Also, there are options to install ozone generators on the air ventilation systems. In this case enough contact time should be considered for ozone to remove the smell.

Ozone is an oxidant produced through green technology. It reverts back to the oxygen it is produced from and creates a microbe free environment for the plants and the people but it should be carefully sized for each farm and odor removal.

Ozone for NOx removal

Posted by Kaleb Jensen on June 15, 2015 under Air Treatment & Odor Control | Be the First to Comment

NOx is a generic term for NO (nitric oxide) and NO2 (nitrogen dioxide). It is produced from the reaction of nitrogen and oxygen gases in the air during combustion, especially at high temperatures. NOx gases are formed whenever combustion occurs in the presence of nitrogen, like: automobiles, construction equipment, boats, power plants, industrial boilers, cement kilns, turbines and etc [1].

NOx mainly impacts respiratory conditions causing inflammation of the airways at high levels. Long term exposure can decrease lung function, increase the risk of respiratory conditions, and increases the response to allergens. NOx reacts with ammonia, moisture, and other compounds to form small particles. These small particles penetrate deeply into sensitive parts of the lungs and can cause or worsen respiratory disease, such as emphysema and bronchitis, and can aggravate existing heart disease.

NOx can be removed utilizing ozone in the following two methods:

  • Direct method: in this method, NOx will be fed through a corona discharge unit. Generated ozone will convert NO and NO2 to N2O5. In spite of NO, N2O5 is very soluble in water and will produce HNO3 which can be sold commercially. The direct method has not been commercialized yet.
  • Indirect method: In this method ozone first is generated in a generator and then is injected to the flue gas stream that contains NOx. Ozone convers NOx to N2O5. In a wet scrubber N2O5 is absorbed. This process has been commercialized and has reached 90 percent NOx reduction.

 

References

  1. http://dwb.unl.edu/teacher/nsf/c09/c09links/www.casahome.org/nitrogen.htm, accessed Jun 2015.

Using ozone for disinfecting infected poultry farms after bird flu outbreak

Posted by Kaleb Jensen on May 15, 2015 under Air Treatment & Odor Control | Read the First Comment

If the bird flu virus is detected in a bird, whole flocks are killed in the barn. The carcasses usually are composted in the barns where the birds had been living. It can be months before the farms are back in operation.

The bird flu virus can be killed by heat (90 oF for three hours and or 100 oF for 30 minutes). Ozone as a very strong oxidant that can be employed for treating the infected barns and farms. Ozone can be sprayed to wash the surfaces. Also, after wash down, it is possible to shock-treat the barns and buildings with gaseous ozone. Ozone is produced onsite and only needs electricity to operate.

Another advantage of using ozone is that there are no chemicals left on-site, which makes ozone unique for this purpose.

MobilezoneOzone Solutions provides mobile ozone systems which are perfect for this application. These systems can be employed later in the farm [1]. Do not hesitate to contact us for more information on how Ozone Solutions can partner with the Poultry Industry and solve many of the problems the bird flu causes.

 

 

 

 

RMT Remediation Trailer

 

Ozone Solutions also provides ozone trailer systems that will serve as excellent shock treatment solutions. These systems can be employed later in the farm [1]. Do not hesitate to contact us for more information on how Ozone Solutions can partner with the Poultry Industry and solve many of the problems the bird flu causes.

 

Reference

[1]. http://www.ozonesolutions.com/journal/2014/ozone-used-chicken-farm/

How to kill the bird flu (H5N2) virus with ozone and UV

Posted by Kaleb Jensen on April 23, 2015 under Air Treatment & Odor Control | Be the First to Comment

Avian influenza is caused by an influenza type A virus which can infect poultry (such as chickens, turkeys, pheasants, quail, domestic ducks, geese, and guinea fowl) and is carried by free flying waterfowl such as ducks and geese. H5N2 doesn’t pose immediate health risks to the public or to food safety. However, the disease is capable of killing an entire flock within 48 hours. Experts say poultry remains safe for consumers, and the Center for Disease Control considers the risk of avian influenza to humans to be very low [1].

The latest outbreak of the avian virus come one day after USDA officials announced that H5N2 was found at a chicken laying facility in Osceola County, Iowa. Some 3.8 million layer hens at the farm affiliated with Sonstegard Foods Company will be euthanized to try to prevent the spread of the disease, according to the company [2].

Chicken FarmOzone already has been proved to be active on removing bird flu like H1N1 with %99.999 of virus kill. Ozone inactivates the virus mostly by peroxidation of both lipid and protein. Some studies have been carried out to show effectiveness of ozone for H5N1.H5N1 is very similar to H5N2 and previous studies show that 0.5 ppm of ozone causes 5 log reduction in the virus [3,4]. Terrier et al research shows that 0.05ppm of ozone generated in their cold plasma device causes 3-4 log reduction of the virus.

UV is also very effective in bacteria kill. Four log reduction of the virus has been observed using UV systems. Both UV and ozone can be applied for virus kill as the following:

  • HVAC system: ozone or UV system can purify the circulating air in the chicken/Turkey facility.
  • Bird water: the bird drinking water can be purified with UV. Ozone also can be employed for disinfecting the water and very small ozone residue in bird drinking water has sterilization effect for the birds.
  • Bird feed: bird feed can be disinfected with ozone
  • Surface sanitation: Surface and walls in the facility can be wash down and disinfected with ozone.
  • Delivery truck sanitation: ozone can be employed to disinfect the delivery trucks before loading.
  • Cold storage: Ozone gas can be injected in cold storages to keep the storage room free of bacteria and virus.

Learn more by calling our engineers and R&D team today! 1.712.439.6880

References

[1]. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4025352/, accessed on April 2015

[2].http://www.usatoday.com/story/news/2015/04/21/poultry-turkey-avian-flu-crisis/26100287/,   accessed on April 2015.

[3]. TANAKA Hiroshi, SAKURAI Miei, ISHII Kousuke, MATSUZAWA Yoshiaki, “Inactivation of Influenza Virus by Ozone Gas”, Engineering Review, Vol.42, No. 2, 2009 .

[4]. Terrier, O.,  B. Essere, M. Yver, M. Barthélémy, M. Bouscambert-Duchamp, P. Kurtz, D. VanMechelen, F. Morfin, G. Billaud, O. Ferraris,B. Lina, M. Rosa-Calatrava, V. Moules, “Cold oxygen plasma technology efficiency against different airborne respiratory viruses”, Journal of Clinical Virology”, 45,119–124, 2009.

[5]. M. Ellin Doyle, White Paper on Effectiveness of Existing Interventions on Virus Inactivation in Meat and Poultry Products, Food Research Institute, Report UW–Madison, June 2010.

Natural Disasters, How Ozone is used to help restore lives

Posted by dave on May 6, 2014 under Air Treatment & Odor Control | Be the First to Comment

Did you know that after a thunderstorm when you get that nice fresh clean smell, what you are smelling is Ozone? This is nature’s way of cleaning the air and making things fresh and clean!

But when that little thunderstorm becomes a BIG THUNDERSTORM, this can often times mean water in your basement.           …Where ”fresh and clean” quickly turns into “musty and moldy”.

When natural disasters happen, lives are turned upside down. Whether it’s a flooded basement due to a hurricane, or possibly smoke damage from wildfires, ozone is commonly used through this restoration process.

housefire_small

 

After the affected area is cleaned and any demolition is complete, it is an Ozone Generator that is usually brought in to cleanse the air of any type of odor, bacteria, viruses, or mold spores. The reason that restoration companies use this technology is because ozone is the strongest oxidant available, and is also safe to handle when many other chemicals are not.

Did you know that Ozone is also a Green Technology?

When Oxygen is charged with electricity, it changes the O2 molecule into O3 (which is Ozone). Then after the ozone reacts with the odor, the 3rd molecule decomposes and turns back into Oxygen!

How Ozone Breaks Down Odor

How Ozone Breaks Down Odor

Check out some of our other Journal Posts to explore more ways that Ozone is naturally awesome!

Ozone for hunting

Posted by Joel Leusink on November 21, 2013 under Air Treatment & Odor Control | Be the First to Comment

Did you know ozone is even used by hunters to find deer easier?  Read this article for details.  Using ozone for hunting allows hunters to find more deer, and eliminate odors that may be discovered by the sensitive deer

 

Squashing the stench to fool a buck’s nose

By Brad Harvey

November 19, 2013

I use an ozone generator that pumps pure ozone into the container holding my hunting clothes. This removes any odors or odor causing bacteria that survived the washing machine and the scent eliminating detergent. Ozone generators can be purchased from outdoors stores, and are inexpensive and easy to use. When I come in from a morning hunt, I remove my hunting clothes, toss them into the container and run a 30-minute cycle that will squash any smells I’ve added to my camo since I put it on that morning.

Ever wear your hunting clothes into the local grill to grab a bite for lunch?

Smells from foods and fryers are some of the easiest to pick up and will saturate your clothes as badly as smoke. Similar mistakes include pumping gas in your camo and even walking into a convenience store since many of these stores offer fried foods such as chicken. It doesn’t take anything more than stepping in the door of such places for a split second to ruin the hunt.

Careful attention should be continued when you arrive on your hunting grounds, whether you’re hunting that day or not. Once you’ve found the perfect spot for your tree stand, it’s important to study the layout of the land to find entry and exit points for specific winds. If even the slightest breeze is going to carry your scent toward the deer’s bedding areas or the food source they’ll be traveling from, you’re wasting your time.

Read full article here

For more information about ozone for odor removal with ozone click HERE

Follow this link to view our small ozone generators for odor removal.  We even carry ozone generators to remove the odor in your home refrigerator!

Extending shelf life of Strawberries

Posted by Joel Leusink on November 19, 2013 under Air Treatment & Odor Control | Be the First to Comment

A new paper was just published by Ozone Science and Engineering, the publishing arm of the International Ozone Association, on the use of ozone to extend the shelf life of strawberries.

Role of Ozone Concentrations and Exposure Times in Extending Shelf Life of Strawberry

Author: Mehmet Seçkin Aday, Mehmet Burak Büyükcan, Riza Temizkan & Cengiz Caner

ABSTRACT

Efficiency of three aqueous ozone concentrations (0.075 ppm, 0.15 ppm, 0.25 ppm) and two exposure times (2 and 5 minutes) were investigated for maintaining strawberry quality. Exposure to 0.075 ppm and 0.15 ppm ozone delayed the changes in pH, total soluble solids, firmness and electrical conductivity. All ozone treatments prevented mold growth during storage. However, the 0.25 ppm ozone treatment caused loss of strawberry quality due to high ozone concentration. The results have shown that; low (0.075 ppm) and middle (0.15 ppm) ozone concentrations can be applied to extend the shelf-life of strawberries by at least three weeks under refrigerated conditions.

Get full paper HERE

This paper is another great example of ozone use in food storage and food processing.

Ozone Helps Produce Last Longer by Extending Shelf Life

Benefits of Ozone Use in Cold Storage

  • Extend shelf-life of the produce within the cold storage facility.
  • Air-borne microbiological control
  • Low ozone levels (<0.3 PPM) will inhibit microbiological growth in the air.
  • High ozone levels can be used for disinfection when room is empty.
  • Surface sanitation can be maintained
  • By inhibiting microbiological growth pathogens on the surface of produce, containers, and walls will be kept to a minimum.
  • Eliminate mold growth from cold storage area.
  • Odor control
  • Maintain an odor-free cold storage area
  • Keep odors from cross contaminating between products
  • Ethylene Removal

Methods of Ozone Application

  • Ozone gas can be distributed throughout a cold storage facility at low levels.
  • Ozone-sterilized ice is used to pack fresh fish and seafood to prolong freshness.
  • Ozone gas is used in meat coolers to inhibit microbiological growth and extend shelf life.
  • Ozone is dissolved into water to wash fruits and vegetables and remove mold and bacteria.
  • Low levels of ozone gas can be used in containers to prolong shelf life upon delivery.
  • Dissolved ozone is used to wash meat and poultry to remove bacteria and extend refrigerated shelf life.

System Diagram

Ozone in the Food Industry

ozone_vegetable_processing_thu

Because ozone is a safe, powerful disinfectant, it can be used to control biological growth of unwanted organisms in products and equipment used in the food processing industries. Ozone is particularly suited to the food industry because of its ability to disinfect microorganisms without adding chemical by-products to the food being treated, or to the food processing water or atmosphere in which food are stored.