Ozone Advantages with Cooling Towers

Posted by Brialle Veldman on August 14, 2017 under Uncategorized | Be the First to Comment

When it comes to treating cooling towers with ozone, there are simply many advantages that are associated with installing ozone equipment.  As a matter of fact, Legionnaire’s Disease is caused by the bacterium Legionella pneumophila that frequently grows in cooling tower environments. Many factors are considered when making a decision to utilize ozone for energy savings, cost, and operation conditions as well as maintenance. Blow down, drift, and evaporation are three ways that water can be lost from a cooling tower. Below, I will list all different ways it can improve a process:

  1. Ozone improves the ability of refrigerant condensers and industrial process heat-exchangers to transfer heat, which then improve chiller system performance.
  2. Implementing small amounts of ozone will perform as a biocide to eliminate nearly all organic and mineral solids which removes the possibility of having to remove large amounts of water.
  3. Ozone can drive down the need for chemical additives to the cooling tower water.
  4. Ozone’s relative short half-life complies with regulations easier because it cannot be found in the blow down water.
  5. Additionally, resolving the issue of blow down water being discharged to a local wastewater treatment eliminates the possibility of extra sewage fees for accepting the water.
  6. Ozone will not alter the rate of evaporation.
  7. Ozone reacts as a descaling agent, which decomposes the biofilm.
  8. Reduced health risk to personnel.

1994 Ashrae Handbook, Equipment Volume, Chapter 20, Cooling Towers, American Society of Heating, Refrigerating, and Air Conditioning Engineers, Inc.

Use of Ozone to Remove Milk Residues and Biofilm-Forming Bacteria

Posted by Brialle Veldman on July 31, 2017 under Dairy | Be the First to Comment

The first step that many dairy processing facilities engage in for bacterial reduction is an initial warm water rinse to remove the bulk of milk residues.  Guzel-Seydim et al. (2000) quantified and visualized the effectiveness of warm water (40 degrees Celsius) and cold aqueous ozone (10 degrees Celsius) as a pre rinse for removing dairy soil from stainless steel plates. Utilizing micrographs displayed that the metal surfaces were cleaned more efficiently by using aqueous ozone than by the 40 degrees Celsius warm water treatment.

According to the results of COD (chemical oxygen demand) measurements, aqueous ozone removed 84% of milk residues from plates, whereas the nonozonated warm water treatment removed only 51% of dairy soil materials. Similarly, Fukuzaki (2006) and Jurado-Alameda et al. (2014) studies the opportunity to use ozone for removing heat-denatured whey proteins from stainless steel surfaces. Both aqueous and gaseous ozonation allowed less whey protein to be degraded.  Because micro-organisms attract themselves to milk contact surfaces, it makes it difficult to destroy or alter the microbiological quality of milk and dairy foods. However, the use of aqueous water can only be recommended as a substitute for other conventional methods such as chlorine and warm water if the materials are ozone compatible. In a trial by Greene et al . (1999), approximately 0.4-0.5 ppm of ozone introduced into water at 21-23 degrees C for 20 minutes per day over a 7 day period caused a certain degree of weight loss of all materials tested (i.e. aluminium, copper, stainless steel, and carbon steel). Therefore, it can be concluded that it is important to consider equipment when ozone is applied to dairy chilling water systems.

 

Varga, László, and Jenő Szigeti. “Use of Ozone in the Dairy Industry: A Review.”Internationl Journal of Dairy Technology (2016): n. pag. Web. July 2017.

 

Ozone Impact on Trout Fish

Posted by Brialle Veldman on July 17, 2017 under Aquaculture & Zoos | Be the First to Comment

Fish in general is a popular meat to the human species. Fish is extremely perishable, which often leads to spoilage. Therefore, the shelf-life of a product is a very important factor to most businesses. When looking at trout, there are many positive impacts that ozone will bring to the food processing plants that house these fish. Bacteria collect on the fish, particularly non-protein nitrogenous compounds, which are typically associated with fish decomposition. It was demonstrated that the use of slurry ice extends the shelf life of sardine and non-fat fish species, such as Farmed Sea Bream, European Hake, and shrimp. Hence, along with gaseous and dissolved ozone, ozonated ice has become a popular method because it holds the same powerful properties. Since the early 1920s, many scientists have embarked on the theory of applying the powerful properties of ozone to improve shelf-life and safety of fishery products. Not until 1997, when the US Department of Agriculture approved ozone for reconditioning the recycled poultry chilling water, did many reports expand the possibility of using ozone to disinfect food surfaces. Ozone has become an alternative method that works because it kills microorganisms by destroying the cell wall and leaves no harmful byproducts. In a specific research experiment, freshly caught trout were obtained from a local fish farm. The trout were about 25cm in size and weighed around 300 grams. Gaseous ozone was injected into the bottom of a water container by an ozone generator with an internal pump. During oxidation, the concentration that was reached in the water was .1 PPM in 20 minutes and was kept constant during this experiment. Once the .1 PPM was achieved, the fish were immersed in the treated water. After 2 hours exposure, they were put in an isolated container stored at 5 degrees C. Once the experiment was over, microbial tests were taken immediately after. For this test method, the microbial tests were performed at different dilutions. Brine 5% was used as the diluting agent. The samples were taken from the ozone treated fish specimens for biochemical tests.  Additional research has shown that ozone treatment can give fish a slightly higher weight count for profitability.

Ozone results:

  • Ozone treatment increased the shelf life of trout from 4 days to 6 days, which helps in longer preservation time.
  • Ozone treatment significantly slowed the microbial growth, resulting in lower counts of bacteria.
  • Ozone treatment had no destroying defect on the fish biochemical properties.
  • Ozone treatment removes the contaminants from the fish skin which causes higher protein number.
  • Sensory analysis displayed no change in color or taste of ozone treated trout.

Dehkordi, Behrouz M., and Neda Zokaie. “Extension of Fish Shelf Life by Ozone Treatment.” International Journal of Environmental, Chemical, Ecological, Geological and Geophysical Engineering 4.No:2 (2010): n. pag. Web. 17 July 2017.

 

Ozone Positively Influencing the Pharmaceutical Market

Posted by Brialle Veldman on July 10, 2017 under Uncategorized | Be the First to Comment

In general, ozone is an ideal method of removing pharmaceutical residue due to the efficiency of breaking down the pharmaceuticals. PPB (Parts per billion) is the unit in which they determine the level of pharmaceutical compounds in drinking water. Studies show that pharmaceuticals in water may be responsible for some genetic malfunctions in animals and human beings. Ozone Solutions’ industry leading technology has proven to be a safe and cost-effective sanitizing approach.

Ozone benefits:

  • Short contact time; Quicker sanitation: typical cycles are reduced by 30% to 75%
  • Generated onsite, eradicating shipping and handling problems
  • Clean, safe, and reliable – takes less space with having less equipment than most chemical treatment/storage systems
  • Micro-pollutant removal and eliminates the need to add processes in the treatment stream with future regulations
  • No harmful residuals after ozonation because ozone decomposes to oxygen, leaving no harmful byproducts.
  • No flushing of the system required
  • No chemicals needed to be added to the facility’s waste stream
  • No heat is required

Ask us how the ROI will benefit your business!

IFT Food Expo 2017

Posted by Brialle Veldman on June 23, 2017 under Uncategorized | Be the First to Comment

Have you heard of the IFT Food Expo in Las Vegas, Nevada? The IFT (Institute of Food Technologists) is held June-25 through the 28th where companies share the latest research, innovate solutions, and opportunities for creating relationships with professional contacts. We are excited to take advantage of  this opportunity to display our custom designed systems that will help companies in all food applications. This particular event, which is the single most important trade show of the year, is intended for those in the food science industries. The objective of the show is to bring sellers and buyers together to offer products and services to make your business more successful. We, here at Ozone Solutions, commit our full expertise to driving innovative ideas and global sustainability. Come join us for this four day event located at The Grand Canal Shoppes convention center. There will be roughly 20,000 attendees, 100 sessions, and 1,200 exhibitors and we would like to extend this invitation to you.  We hope to see you there!

 

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

Back Pressure Relating To Venturi Injector Method

Posted by Brialle Veldman on June 6, 2017 under Ozone for Beginners | Read the First Comment

When it comes to introducing ozone gas into water, there is more than one method. Venturi injector is probably the most common when it comes to handling higher concentrations of ozone. Venturi injectors work by forcing water through a conical body, which initiates a pressure differential between the inlet and outlet ports. This creates a vacuum inside the injector body, which initiates ozone suction through the suction port. This leads us to have to understand back pressure. For example, a pump delivering 18 GPM at 15 PSI can inject a maximum of 20 SCFH (10 LPM) of air if 7 PSI of back pressure exists.

If more suction is needed two options exist:

  1. Increase the size of the pump
  2. Decrease the injector outlet pressure by increasing the diameter of the pipe, reducing the number of elbows or lowering the height of the delivered water.

The greater the pressure differential, the more suction you will have.

 

Venturi Injector picture

(Venturis require a constant pressure differential to initiate ozone injection (15 PSI in this example).

When it comes to comparing two different types of generators, there are differences to keep in mind when you’re using a venturi injector method.  First, depending on the pump, your flow will be different. Our TG-Series is able to withstand higher pressures and is a popular choice because of that exact reason, which means it creates higher concentrations of ozone. If you maintain 10-25 PSI back pressure, you will achieve the ideal ozone concentration ranges. If it is above 35 PSI, you will not achieve as high of concentrations. Our OZV-Series is not able to withstand high pressures, (lower than 5 PSI) but is still a popular choice for applications with concerns to having lower concentrations for a cost-effective solution. Therefore, when utilized with a contact tank, back pressure is required to remove off-gas. When the water pressure is above 50 PSI, the concentration of ozone dissolved into the water decreases due to ozone off-gas. We highly recommend having a minimum of 5 PSI and a maximum of 50 PSI on your contact tank. The importance of this pressure range is to remove large undissolved ozone gas and not forcing the dissolved ozone to leave the solution.

Applying Gaseous Ozone to Oils

Posted by Brialle Veldman on May 22, 2017 under Medical | Be the First to Comment

To get started, when choosing to decide what ozone machinery to pick from, it is best to decide what your budget is for ozone equipment and associated supplies. We have gathered reports from customers who have informed us that 40 grams an hour of ozone seems to be the most that you can effectively work with; this relates to the absorption rate into an oil. Therefore, purchasing a higher output ozone generator will speed up the turnaround time of creating ozonated products. Our TS-Series contains an integrated oxygen concentrator and air compressor which comes ready to use upon arrival.  It is possible to divide the output into 2 or 3 separate ozone streams. With this option, it alleviates the problem of having many smaller machines.

There are safety precautions to take with this application. Higher temperatures of the oil will help the absorption rate of the ozone gas. The type of oil that you are using will determine which temperatures is best, but you will need to conduct your own testing using your equipment since it can also make a difference. Please understand that oils when treated with gaseous ozone will make the temperature of the oil rise. For most oils, do not allow the oil to rise above 160 F. Otherwise, explosions could happen which leads the refined oxygen to add fuel to fire. Hence, when the oil heats up, it needs to be cooled off. If it is not cooled off, it could cause a fire. Keep in mind that you should have some sort of ventilation or destruct unit for the off-gas of ozone to comply with OSHA regulations.

There are a selection of oils that can be processed. Some of the different oils with an expected treatment time using a 40 g/hr ozone generator with an oxygen feed-gas along with a special beaker

  1. Olive oil; 2 gallons (256 oz.) in 8-12 days.
  2. Jojoba oil; 2 gallons in 6-8 days.

There are many variables that affect the duration of treatment time;

  1. The type of oil
  2. The temperature of the oil
  3. The consistency you want the oil to become
  4. What feed-gas you choose- oxygen, dry air, or ambient air.
    1. Oxygen provides quicker turn around as the concentration of ozone gas can be much higher.
  5. The concentration of the ozone gas coming out of the ozone generator
  6. The vessel in which you process the oil

With all the variables listed above working effectively, you can process 5 gallons in 4-8 days. Again, I state that from what I’ve heard from customers.

Here are the products we offer you:

Ozone generators

http://www.ozonesolutions.com/products/Other-Industrial-Ozone-Generators

Complete ozone system

http://www.ozonesolutions.com/industrial-ozone-generators/ts

Oxygen concentrators

http://www.ozonesolutions.com/products/Oxygen-Concentrators

Diffusers

http://www.ozonesolutions.com/products/Ozone-Injection-Devices

Tubing

http://www.ozonesolutions.com/products/Ozone-Injection-Devices

Fittings

http://www.ozonesolutions.com/products/Ozone-Compatible-Fittings

Destruct units

http://www.ozonesolutions.com/products/Ozone-Destruct-Units

 

Improved OZV-8 ozone generator

Posted by Brialle Veldman on May 11, 2017 under Conferences/News | Be the First to Comment

Important Changes to OZV-8 ozone generator

One of our most popular wall mounted ozone generators is our OZV-8.This unit will produce 10 g/hr from 4 lpm of oxygen at 0.8% by weight. When it produces produces ozone from dry air, the unit will produce 4 g/hr from 7 LPM of air flow at 0.65% by weight. The adaptable ozone generator will produce ozone from either dry air source or oxygen feed gas.  Also, it operates under a -5PSI vacuum to 5 PSI of pressure.

Here are treatment applications and uses:

5-11-17 Blog OZV-4 pic

  • Small drinking water applications
  • Olive oil
  • Washing vegetables & fruits
  • Self-contained remediation systems
  • Air systems for small commercial buildings
  • Laundry
  • Wastewater Treatment
  • Surface sanitation

Since the origination of the OZV-8 ozone generator, for the most part, has not altered its design. However, in 2014, the transformer was reassessed to an improved transformer and inverter board. To add, an upgraded 10-position switch and flow switch. To continue, in 2017, more improved changes occurred with this product.

  • Updated driver board made it versatile between 120 or 220 VAC power without alteration. Additionally, there is no increased cost with that change.
  • The 10-position switch has changed to a button style that is easy to replace
  • The on/off switch is now a simple one-touch button
  • The lights on user interface are now LED technology
  • Cooling fans have changed from AC fans to DC operated fans, they are smaller and offer more airflow and more coverage of the corona cell for improved cooling.

In conclusion, the OZV-4 is a better resourceful ozone generator that customers will continue to enjoy.

Ozone Chamber – Coming soon!

Posted by Brialle Veldman on May 4, 2017 under Conferences/News | 2 Comments to Read

We are pleased to announce that we are adding an ozone chamber to our product line. This glass container has a top that is sealed to destruct the off-gassed ozone utilizing a destruct unit. This neat product can be used for many applications from residential home use to small scale lab applications. This ozone chamber pairs very nicely with our HP-Series ozone generator.

Below I will list specifications to the unit:

  • Material-glass
  • Volume-1.7 L
  • Weight- 600 g
  • Contains: Tank, filter, air stone, PVC hose

Common Applications

  • Treating fruits and vegetables
  • Small lab testing
  • Drinking aqueous ozone