Posted by Joel Leusink on March 30, 2010 under Food Industry | 
Antimicrobial effect of Ozonated water against E.coli
Recently we performed some research using ozone as an antimicrobial agent against E.coli. Specifically this research was based on determining what level of ozone (in ppm) was necessary for what period of time ( in seconds) was necessary for adequate E.coli reduction.
The ozone levels and times shown in the chart below were used in this test. The reduction of bacteria is shown in the table for the ozone concentration and contact time used.
Table Shows Log Reduction of E.coli with Ozone
|
1 Second |
7 Seconds |
15 Seconds |
30 Seconds |
| 1 PPM |
1.4 |
2.7 |
4.7 |
4.7 |
| 1.5 PPM |
1.6 |
2.8 |
3.1 |
3.1 |
| 2 PPM |
3.5 |
3.6 |
3.8 |
3.8 |
| 2.5 PPM |
3.1 |
3.2 |
3.6 |
3.7 |
| 3 PPM |
3.5 |
3.7 |
3.7 |
3.7 |
| 3.7 PPM |
3.6 |
3.8 |
3.9 |
4.2 |
| 4.4 PPM |
4.2 |
4.9 |
4.6 |
4.8 |
This chart was generated from an average of 3 samples tested. The full results are available online in the paper below.
Click HERE to read this entire paper
This test was very successful in that it proved that only 2.o PPM of ozone for 1 second of contact time achieves similar results to much higher ozone concentrations for longer contact times. This may allow for lower water flows to be used with smaller ozone generation systems. This may be a net energy savings for many processing plants currently using dissolved ozone as an antimicrobial intervention.
While this test used dissolved ozone to inactivate E.coli on pork meat it is important to note that ozone can destroy any bacteria on any surface. Call us today to find if ozone is a possible intervention in your current application.
More information on ozone and bacteria reduction can be found at the links below:
Posted by Nathan on March 29, 2010 under Commercial Ozone Usage, Ozone Compatibility, Ozone Products |
Announcing several new products that are now available on our website! Our stainless steel needle valves are ozone compatible, corrosion resistant, and very durable. They are made of 316 Stainless Steel and Chrome-plated 316 Stainless Steel, with a maximum operating pressure of 3435 PSIG (236 BAR) and a bursting pressure of 5000 PSIG (344 BAR). These are the same needle valves that we use on our custom ozone-injection skids, where they have yielded years of trouble-free service in demanding environments.
 NVSS-4F (1/4-inch FNPT) |
 NVSS-4M (1/4-inch MNPT) |
 NVSS-6 (3/8-inch Compression) |
 NVSSA-4 (1/4-inch Compression, elbow) |
These pictures illustrate just a sampling of our needle valve lineup. To see a complete list of sizes, specs, and pricing visit our Ozone Compatible Needle Valves page!
Posted by Joel Leusink on March 28, 2010 under Food Industry |
Below is a computer generated illustration of how ozone kills healthy bacteria.
- A healthy bacillus bacterial cell (waiting to ruin your day).
- Zooming in closer, Ozone (light green) comes into contact with the cell wall. The cell wall is vital to the bacteria because it ensures the organism can maintain its shape.
- As ozone molecules make contact with the cell wall, a reaction called an oxidative burst occurs which literally creates a tiny hole in the cell wall.
- A newly created hole in the cell wall has injured the bacterium.
- The bacterium begins to loose its shape while ozone molecules continue creating holes in the cell wall.
- After thousands of ozone collisions over only a few seconds, the bacterial wall can no longer maintain its shape and the cell dies.
Note: bacteria cannot build an immunity to ozone due to the oxidation that occurs on the cell wall.
For more bacteria reduction information follow the links below:
Posted by markO3 on March 26, 2010 under Commercial Ozone Usage, Food Industry |
Research in the UK highlights ozone as an effective method of whole-room disinfection, according to a recent article on FoodProductionDaily.com. The research highlights benefits when compared to traditional methods such as chemical fogging. Perhaps the primary benefit is the additional coverage provided by ozone, which readily disinfects all surfaces that air has access to – as well as the air itself. Chemical foggers and manual wash-downs primarily affect upper surfaces (leaving bottom surfaces untouched) while properly circulated ozone will have an effect in any area that air is able to flow, including drains, ductwork, and the undersides of equipment.
Using Ozonated Water to Wash and Disinfect Produce
Ozone is also produced on-site, eliminating the need to store large amounts of chemical required to supply a fogging machine. Once the ozone breaks down, the primary byproduct is oxygen – leaving no chemical residue on surfaces. The overall result makes ozone a “green” option for sanitization that requires little downtime.
Ozone interest in the UK food industry has been increasing, which mirrors trends seen here in the US. Current usage includes ozone for fresh produce, meats, seafood, and storage (just to name a few) – with new applications showing up every month. Ozone Solutions has extensive experience using ozone for food applications, in either gaseous form or dissolved in water. Call today to ask about our stock solutions, or work with us to develop a custom solution to suit your needs!
Refer to the following links for more information on ozone use with food:
Ozone and Food Processing
Ozone and Food Storage
Ozone Use on Fruits and Vegetables
Ozone and E. coli 0157:H7
Additional Links:
Original article on FoodProductionDaily
Posted by Nathan on under Ozone Compatibility, Ozone Products |
We now offer stainless steel solenoid valves on our website. They are ozone compatible and corrosion resistant, with the wetted parts made only of stainless steel and viton seals, meaning reliable performance and a long lasting product that you can rely on. Along with being a useful addition to an industrial ozone generation system, these valves are also a great way to ensure years of service in even the most corrosive environments.
If your need requires a durable, damage resistant product to hold up against harsh environments, then these solenoid valves are perfect for the job. Even if you’re just looking for high pressure capabilities in a quality product, these will meet and exceed expectations.
The first and smallest valve is the SVSS-2M. This solenoid valve has 1/8-in FNPT fittings and is capable of handling pressures up to 50-psi (3.5 bar). The most enticing feature of this product is that multiple valves can be connected together directly, creating a manifold style valve assembly. Not only will this cut down on the price of your project by eliminating fittings, it will also cut down on the space used, creating more room for larger components. We use these on any project that requires a normally closed solenoid valve in an environment at 50 psi or less.
The second valve we have to offer is the SVSS-4. Weighing in at 1-lb, this is a slightly larger solenoid valve, but is made entirely of stainless steel utilizing viton seals. This valve has 5/32-in FNPT, allowing for slightly larger fittings to accommodate your needs. Being able to withstand pressure up to 75 PSI (5 bar), it can get the job done in many situations. The nice thing about this solenoid valve is that even the body is entirely made up of stainless steel, making it the most resilient valve we have to offer. Not only is it ozone compatible and corrosion resistant internally, but it is also corrosion resistant externally as well. It is perfect for environments where general corrosion is a concern.
The third and final solenoid valve we offer is the SVSS-6 model, which allows for 300 psi (20.7 bar). With an inlet and outlet fitting size of 3/8-in FNPT, it has one of the largest orifice sizes available at this level of high flow and pressure capabilities. This, like the others, is ozone and corrosion resistant, making it one of the most useful valves we have. The other feature we offer on this model is a choice of AC or DC power options. We use this solenoid valve in most of the ground water remediation systems we build. The quality and reliability of this product has exceeded our expectations. The wetted parts on this valve are stainless steel and viton, ensuring a long life expectancy.
To find out more information on these solenoid valves please visit our flow and pressure control page at http://www.ozonesolutions.com/Pressure_And_Flow_Control.html
Posted by Nathan on March 22, 2010 under Commercial Ozone Usage, Ozone Generators, Wastewater Treatment, Water Remediation |
Just recently, we have put new pressure regulators on our website. They are Ozone compatible and corrosion resistant. With it’s stainless steel body, teflon seals, and viton o-rings, it is sure to last quite a long time. With pressure ranges going all the way up to 100 psi, and bursting pressure at 500 psi, there are useful in most situations.
As a company that manufactures industrial use ozone generating systems, we use these pressure regulators on all systems that require one. They have many more uses though other than putting them in an ozone generating system. They can be used in most situations that would require having a corrosion resistant regulator, such as harsh chemicals or an unpredictable weather setting.
If you would like to learn more about these and other flow and pressure control devices please visit our website at http://www.ozonesolutions.com/Pressure_And_Flow_Control.html
Posted by Joel Leusink on March 19, 2010 under Commercial Ozone Usage, Odor Removal, Ozone Generators |
Recently we implemented ozone in a spice warehouse to solve a major odor issue. Read about this installation here. This customer even provided a great testimonial after our successful installation.
This customer stores and packages various spices in a large warehouse that is near houses, a school, even a busy roadway. This was leading to lower quality of life, and lower property values in the neighboring community.
Warehouse Location
After successfully installing the ozone system within the air space inside the warehouse odors were reduced inside of the building, leaving almost no odor escaping outside. This drastic reduction in odor was a huge success. Not only is the odor in the community lower, the employees have a better place to work.
Ozone System Used
Ozone Manifold
Results
- After the ozone system was implemented the odor directly next to the building was almost completely eliminated.
- The county health department praised the spice warehouse for the amazing difference in odor emissions.
- Due to the improved air quality inside the warehouse, the vent fans could be slowed down to recirculate less air.
- Air quality inside the warehouse improved creating a better work environment for the employees.
- Fines and odor complaints were completely eliminated after installation of the ozone system.
Links
Spice Warehouse Ozone Installation odor control with ozone
Ozone and Industrial Odor Control
Hog Facility Odor Control System
Posted by DonaldVR on March 18, 2010 under Uncategorized |
Summary
The same chemical properties that allow high concentrations of ozone to react with organic material outside the body give it the ability to react with similar organic material that makes up the body, and potentially cause harmful health consequences. Recovery from the harmful effects can occur following short-term exposure to low levels of ozone, but health effects may become more damaging and recovery less certain at higher levels or from longer exposures.
Important Government Standards
The Food and Drug Administration (FDA) requires ozone output of indoor medical devices to be no more than 0.05 ppm.
The Occupational Safety and Health Administration(OSHA) requires that workers not be exposed to an average concentration of more than 0.10 ppm for 8 hours.
The National Institute of Occupational Safety and Health (NIOSH) recommends an upper limit of 0.10 ppm, not to be exceeded at any time.
EPA‘s National Ambient Air Quality Standard for ozone is a maximum 8 hour average outdoor concentration of 0.08 ppm (see: the Clean Air Act)
Ozone Solutions
Ozone Solutions recommends that all ozone systems be designed with proper mechanisms to dispose of excess ozone and detect ozone leaks. Additionally, residential and commercial ozone shock treatments for odor removal should be performed in the absence of humans or animals to avoid exposure to unhealthy levels of ozone.
An ozone treatment can be used to remove or reduce agents such as residual smoke or mold spores that aggravate breathing problems. However, people with serious breathing issues, such as asthma, should not be around ozone gas and should avoid any area where an ozone shock treatment has been performed in the last 24 hours.
More Information
For more information about ozone and health click here.
Posted by Nathan on March 17, 2010 under Commercial Ozone Usage |
Two new Laboratory Ozone Generators
These are unique ozone generators as they use a double quartz dielectric ozone generation tube. This means the oxygen and ozone gas only touches quartz and Teflon tubing. This will produce the purest ozone possible. If you are looking for an ozone generator to produce pure ozone these are perfect for your application.
The first of which is the AC-500G, which is a versatile, and compact ozone generator that is wall mountable. This unit can produce 250 mg/hr of ozone of dry air, or 750 mg/hr of ozone on oxygen. It uses double glass technology to create a more pure ozone output. I would recommend this unit in any research facility that only needs a moderate amount of ozone. It is very compact so it takes up a minimal amount of space .
The other new product is the OZV-20DG, which is a larger 20 g/hr generator. 
This is also a wall mountable generator and is great for higher concentration needs when very little room is available. This unit uses double quartz technology to maximize ozone output. It only runs on oxygen, and is an impressive ozone generator.
If you would like more information on these products you can check them out at http://www.ozonesolutions.com/AC-500G.html for the AC-500G or at http://www.ozonesolutions.com/OZV-20DG.html for the larger OZV-20DG.
Posted by Joel Leusink on March 4, 2010 under Commercial Ozone Usage |
Today we took some research on the use of ozone in cooling towers as a biocide and added it to our website.
I thought I would share this information. This data is great, it shows that 0.05 PPM ozone dosage rate into water is a very effective biocide. This is an easy number to remember and does show great results on many application. It’s great when research can validate simple things like this.
Here is the conclusion of this research:
Conclusion
The small scale test demonstrated that a low concentration of .05 mg/L of ozone is effective in treating water cooling systems. The corrosion levels with the use of ozone were less or non existent. The encouraging results from the test lead to the construction and operation of a pilot plant treating 1,000 m3/h cooling water in a West German power plant.
Click here for a link to the research on our website
Click here for a link to the cooling tower application page on our main website
Contact us for more information on this ozone application
