EPA tests Air Quality Monitors – Aeroqual comes out on top

The EPA recently tested air quality environmental monitors to determine the effectiveness of low cost sensors.  Once again, the EPA has been impressed with the Aeroqual sensors, testing shows Aeroqual comes out on top of the list for air quality monitoring.

Air quality monitors for environmental air quality

Why UV disinfection may not be the solution

UV Light Doesn’t Fully Purify

Using ultraviolet light to disinfect drinking water may simply drive bacteria to dormancy, rather than kill them.

By Jef Akst | January 28, 2015

 

WIKIMEDIA, FRANCIS E. WILLIAMSAlthough ultraviolet (UV) light successfully kills some microbes without introducing harmful chemicals to drinking water, it may not completely disinfect. Instead of killing all bacteria, the water-purification treatment may simply drive some into dormancy, leaving a chance that harmful microbes are revived later on, according to a study published this month (January 13) in Environmental Science & Technology.

UV treatment damages bacterial DNA, blocking replication, but it doesn’t disrupt the cell membrane, as other purification techniques such as chlorination do. In the U.S. and Canada, water treatment facilities first disinfect with chlorination and then use UV light as a secondary measure, but many small-scale facilities elsewhere in the world use only the UV treatment.

To explore the risk of treating water only with UV, environmental engineer Xin Yu of the Chinese Academy of Sciences’s Institute of Urban Environment and his colleagues exposed Escherichia coli and Pseudomonas aeruginosa to varying doses of UV light, then counted the colonies that formed in culture and measured the expression of a bacterial gene for a ribosomal subunit. While the treatments reduced colony growth by as much as 0.0001 percent, the team found no changes in the expression of the ribosomal gene, suggesting that the bacteria were still able to synthesize proteins.

Most strikingly, when UV-treated bacteria were diluted to less than 0.1 colony-forming unit (CFU)/milliliter (mL)—well below the common safety threshold of 100 CFU/mL—the bacteria were able to generate new growth within 24 hours in a nutrient-rich medium at 37 °C, the temperature of the human body. E. coli showed regrowth regardless of the level of UV treatment, while P. aeruginosa were only able to restart after exposure to low levels of UV.

The occurrence of a viable but nonculturable state in bacteria may dramatically underestimate the health risks associated with drinking water,” Yu and his colleagues wrote in their paper. “These results systematically revealed the potential health risks of UV disinfection and strongly suggest a combined disinfection strategy.”

Read original story here

Ozone used for sanitation in fish processing plant

Beaver Street adopts new Ozone sanitation system

In a bid to enhance its environmental sustainability, Beaver Street Fisheries, Inc. is adopting a new Ozone International sanitation system as its primary sanitizing solution for food contact surfaces.

The system is being installed in its meat room, Sea Best facilities and Tropic Seafood lobster operations in the Bahamas.

Ozone provides great advantages, including reduction of bacteria, extended shelf life of products and reduced odor, the company said in a release on Monday.

BSF is utilizing Ozone International’s aqueous sanitation solution. This system pulls in air and produces chemical reactions that strip the air down to pure oxygen atoms. These atoms recombine into O3, or ozone, which is one of nature’s most powerful oxidizers. Once injected into the water stream and applied as a sanitizer, the ozone compounds combine with and destroy viruses, bacteria, molds, mildew and other contaminants.

The implementation of the Ozone International sanitation solution is another step in Beaver Street Fisheries’ longstanding and ongoing commitment to providing superior product to our customers from environmentally sound facilities,” said Casey Marion, BSF director of sustainability initiatives and quality management systems, said. “Ozone is a safer cleaning solution for our employees, our seafood products and our customers.”

As a result of its composition of pure oxygen, ozone provides a safer and more environmentally friendly alternative to traditional food processing industry cleaners like chlorine and ammonia, the company said.

OXS Ozone Water System
ozone water treatment system used for surface sanitation

Ozone water is less likely to have dangerous reactions with other compounds, and leaves no harmful residue on the skin, in treated foods or the processing water. Other benefits of ozone as a sanitation solution are that it destroys microorganisms at a much faster rate than other chemical cleaners, there is no harmful residue that needs to be removed from wastewater after treatment, and there is no organism regrowth, unlike with chlorine and other cleaners.

Ozone is used in food processing for a variety of applications!

With chemicals, if you use too little it’s not effective but if you use too much, it adulterates the product,” concluded Marion. “Ozone is available on demand and works exceptionally well, leaving no residue.”

Ozone has been used for sanitation purposes since as early as 1893; and for the past 12 years Ozone International has provided this proven process to establish quality and safety within the food industry. In 2001, ozone received USDA and FDA approval as a food contact surface disinfectant and for direct contact food surface disinfection.

Read original story here

Ozone used for city water plant upgrade

City of Clarksville Installs BlueInGreen’s Innovative Ozone Technology

BlueInGreen’s HyDOZ system to provide groundbreaking ozone treatment and industry-leading disinfection at Clarksville Water Treatment Plant

FAYETTEVILLE, Ark. (PRWEB) September 15, 2015

Officials at BlueInGreen, LLC announced the installation of the water treatment company’s innovative HyDOZ® system Tuesday, bringing the world’s most efficient gas dissolution technology to the City of Clarksville, Ark.

The HyDOZ will directly inject dissolved ozone into the city’s water supply, treating up to 24 million gallons per day. By using less water, power and chemicals than conventional systems, the HyDOZ will provide more effective water treatment at a fraction of the cost.

ozone system for water treatment
Ozone System for municipal water

The recent plant expansion project will prepare the city’s water infrastructure to meet the needs of Clarksville’s growing population in the future. By reducing both short and long-term operational costs, the HyDOZ is projected to save the city money for many years to come.

After researching water treatment options, the HyDOZ stood out as the most convenient and cost-effective solution for the city, as well as our operators,” said Plant Manager Roy Young. “Ultimately, this project was designed with Clarksville’s future in mind. And with BlueInGreen, we truly have access to the next generation of water treatment technology.”

Ozone is a great option to reduce chemical costs, improve water quality and save money in small and mid sized municipalities!

In addition to reducing operational costs, the HyDOZ also allows operators at the Clarksville Water Treatment Plant to remotely control the facility’s ozone levels, either manually or automatically. Using the HyDOZ system’s wireless capability, operators are now able to monitor and manage the water treatment process from their laptops, phones and tablets.

Because we have a relatively small staff, we need a technology capable of working even when we’re not there,” Young said. “With the HyDOZ, I can leave the plant, check it from another worksite and know that it’s getting the job done. I love it.”

Since 2004, the Arkansas-based water treatment company has expanded its award-winning core technology into four product lines: the SDOX® – for adaptable aeration, the CDOX® – for precise pH adjustment and the SDOX-CS® – for optimized odor control. The HyDOZ – for dependable disinfection – is BlueInGreen’s most recent solution to hit the market.

With sales representation throughout the United States and Canada, BlueInGreen and its oxygen, carbon dioxide and ozone dissolution systems have been selected, installed and praised by engineers and operators across the country.

We couldn’t be happier that another local municipality has opted to implement our technology,” said BlueInGreen President John Kucharik. “But as our installation list shows, BlueInGreen’s technology isn’t just the best in Arkansas. It’s the best in the world.”

Read full story here

Ozone used for restoration of water damage

Ozone Generators Seen as Citizens’ Best Bet against Rain Water Damage

With heavy flooding throughout the United States and most recently in Florida, the country is facing a disaster of massive proportions. There has been considerable loss of life as well as property, amounting to millions.

The June flash floods in Ohio have already caused enough damage to the nation and have resulted in the loss of many lives and millions worth of property damage. Most recently, Florida began receiving heavy rainfall leading to flooding of low lying areas.

The situation is so dire that Florida Governor, Rick Scott, has declared a state of emergency in five counties. And although the rain has stopped and the flooding is subsiding, property owners are now being faced with a more menacing situation; that of mold and fungus formation. With flooded basements, damp attics, and water stagnating in various crawlspaces, the current living conditions of the affected regions are resembling those of third world countries.

While home and property owners are doing their best to rid their residences of stagnating water, that’s only the beginning of their worries. As citizens are still reeling from the effects of the flash floods, most are completely overlooking the fact that the damp and moist conditions left by the flood have created the perfect breeding ground for mold. The worst part is that once the bacteria settles and even a single spore contaminates an area, it will multiply by the billions in a matter of a few hours.

Not only is mold unsightly, but can be toxic for those suffering from allergies or other sensitivities, wreaking havoc on their health. Mold also causes structural instability, particularly in wooden buildings, making it risky for those living in them. There have already been numerous cases of families with mold in and around their homes rushing to the hospital with loved ones who are complaining of breathing difficulties, or respiratory problems like aggravated asthma, fever, and so on.

With so much going on, there seems to be no permanent solution to the growing mold menace, except for one highly innovative approach from Bio3Blaster. The company, which makes a range of ozone generators, has come to the rescue of many households by offering them a way to completely remove molds from every nook and corner that they could be growing in.

Mold is a problem in today’s damp or wet environments. Molds & mildew are the number one causes of allergic symptoms. Many harmful types of mold & fungus can be found worldwide. they grow in high-cellulose material, such as wood straw, hay, wet leaves, dry wall, carpets, wall papers, fiber-boards, some ceiling tiles, insulation, and more. This types are wet and may be slimy to the touch. These dangerous molds grows in medium to high humidity (55 % +). Even when dry, this type of mold can causes respiratory problems. Using a BiO3-Blaster™ ozone generator, you can help reduce, control and many times eliminate mold growth in your business and home.

The biggest advantage lies with the fact that not only can the Bio3Blaster ozone generator remove the unsightly mold from an area, but it eliminates any kind of fungus, bacteria, dust, as well as bad odors from the environment.

Read full story here

New OXG Series Ozone Generators

Ozone generator with integrated oxygen concentrator
OGX-40 Ozone Generator

New Ozone Generator

A new turn-key ozone generator with integrated oxygen concentrator has been released. The OXG series of ozone generators produced by Oxidation Technologies.

  • Ozone production from 10 to 80 g/hr
  • Integrated compressor for turnkey operation
  • Can provide up to 10 PSI of oxygen/ozone pressure
  • High concentrations of ozone are possible
  • Great for water treatment with venturi injectors
    • 10 and 20 g/hr generators cell can operate under vacuum or pressure
    • 35 g/hr generators and larger, can provide oxygen/ozone pressures up to 20 PSI with custom configuration
  • Rugged plastic enclosure is used for maximum corrosion resistance
Turnkey ozone generator
OXG-10 Ozone Generator

Common Applications:

  • Water treatment
  • Laundry
  • Odor control
  • Agricultural applications
  • ultrapure water applications

 

Options are available for the OXG-50 to configure in any way you need.  Standard options for ordering online are listed blow.  For other options, you may require please contact our office for help to ensure we configure exactly to your needs.

Options:

  • External Compressed Air – the OXG ozone generators incorporated an oil-less compressor to provide compressed for the ozone generator.  In very humid or poor air quality environments it is preferred to use compressed air for your high-quality source.  We will remove the compressor, and replace with air solenoid valve, pressure regulator, and 2-stage air filtration.
  • Ozone Leak Sensor – for safety an ozone leak sensor should be used with every ozone generator.  We can incorporate this sensor directly into the ozone generator.

Ozone use for Small and Mid Sized Municipal water treatment plants

Ozone use for drinking water in large municipal water treatment plants has become very popular in recent years.  While ozone use may benefit all drinking water plants, most engineering firms and manufacturers have not targeted small to mid-sized WTP’s.  This is unfortunate and should be reviewed and considered the next growth potential for ozone implementation in Water Treatment.

Why use ozone for drinking water?

  • Ozone saves money

    • Chemical costs are rising, ozone replaces chemical usage, lowers chemical demand

    • Ozone costs remain fairly constant as technology improves

    • Primary cost of operating ozone system is electrical power and system maintenance

  • Better quality water

    • Ozone leaves no residual in water

    • Ozone lowers the use of chlorine, and improves overall water quality

    • Lower, or eliminates DBP’s

  • Powerful disinfectant

    • Ozone is a more powerful disinfectant – can provide complete eliminates of Cryptosporidium, Giardia and other chlorine resistant organisms

    • Ozone can oxidize EDC’s and emerging contaminates

  • Green! – Ozone is a green technology

Municipal Drinking Water plants using ozone – past and future

  • First ozone use in drinking water in the USA was in 1940

    • Whiting, Indiana drinking water plant used ozone for taste and odor control (Rice, 1999)

  • As of 2013, at least 277 WTP’s operating in the USA utilize ozone

    • This data only includes plants larger than 1 MGD capacity, no data is held on smaller plants

    • These plants have a combined capacity of 14.5 billion gallons per day with ozone production greater than 600,000 lb/day

  • Since 1983 at least 55 of these plants have been upgraded, using ozone at least once. Indicating ozone use was favored over other technolgoies by all parties.

  • Most ozone use for municipal water is in large water treatment plants.

    • Of the 277 WTP’s of record less than 30 are plants with a capacity less than 2 MGD

    • The median WTP implementing ozone has grown from 5 MGD capacity a the end of 1984 to 80 MGD at the end of 2020 (projected)

Growth potential of ozone use in the USA

  • The future of ozone for WTP’s in the USA is great

    • The EPA estimates there are over 150,000 municipal WTP’s in the USA

    • Only about ~300 WTP’s are using, or are planning on using ozone

    • Opportunity for Ozone use in WTP’s in the USA is untapped

  • Small to Medium sized WTP’s growth potential is greatest

    • Most of the WTP’s using ozone are large, or very large

    • The Largest WTP’s are targeted most for ozone implementation, and the majority of ozone implementation is in large WTP’s

    • There are many small to medium WTP’s that could use ozone but are not targeted by the traditional ozone industry

Municipal water treatment system

Drinking water plants the USA by population served
97% of the water treatment systems in the U.S. can be considered small to mid-size (less than 10,000 customers served).  The growth potential for ozone use in small and medium sized WTP’s is tremendous.

Ozone water systems started
Ozone Water Treatment Plants started in 10 year periods of time.

WTP’s started in 10 year spans shown by capacity

  • Average size of WTP has grown

  • Over time, emphasis on small and medium WTP’s has diminished

Municipal systems by ozone production
Ozone Water Treatment Plants started in 10 year periods of time.

WTP’s started in 10 year spans shown by ozone production

  • Average size of WTP and ozone systems has grown

  • Over time, emphasis on small and medium WTP’s has diminished

Where and why is ozone implemented?

  • Ozone is used in 42 of the 50 states in the USA

    • Ozone is used all over the USA, for a variety of applications

    • Ozone use follows population trends, CA, and TX are the two largest users of ozone

  • Ozone is used to replace traditional oxidants

    • Disinfection (Giardia & viruses)

    • Taste and odor control

    • Reduction of chlorinated DBP’s

    • Removal of color

    • Sulfide oxidation, TOC reduction, Iron and Manganese oxidation

    • Enhance coagulation processes

ozone water treatment plants by purpose
Water Treatment plants that implemented ozone, and the primary purpose for ozone.

Other = Hydrogen sulfide oxidation, Oxidation of unnamed materials, enhancing coagulation, iron and/or manganese oxidation, TOC, and “other”

 

  • Ozone use for municipal WTP’s is diverse, and continues to be diverse in the future

  • Only ozone use for disinfection has grown consistently in each decade

  • Ozone use for “other” has also grown over time, however this is a large group of uses for ozone in one category

Implementing ozone in small and mid-sized water treatment plants can be cost effective and simple.  See image below for an example of ozone contact tank and filtration system.

ozone filtration plant
Ozone contact tank and filtration system

 

Case Study – Lewisville, Indiana

  • 400 GPM WTP – Groundwater from 2 wells

  • High Levels of Iron and Manganese in water

    • Ozone implemeted for primary disinfection and iron & manganese oxidation

    • Plant before ozone

      • Chlorine used for disinfection, and iron & manganese oxidation

      • Chlorine use was excessive causing other issues

      • Plant exceeded TTHM limit due to excessive chlorine usage

      • Customer complaints about taste and odor were received weekly

    • Plant after ozone

      • Customer complaints decreased 95%

      • TTHM and HAA5 levels fell to zero

      • Chlorine dose reduced from 5 lbs per 35,000 gallons to less than 0.5 lbs per 35,000 gallons

      • Filter back-washes reduced, decreasing sewage costs by almost 90%

Case Study – Tate Monroe Water Association

  • 4 MPD WTP – Groundwater from 11 wells

  • High Levels of Manganese in water

    • Ozone implemeted for primary disinfection and manganese oxidation

    • Plant before ozone

      • Permanganate feed was used for manganese removal

      • TTHM levels were high

      • Plant operation was inconsistent

    • Plant after ozone

      • Total project cost was less than $1 million

      • Iron and Manganese levels dropped to near zero

      • Chlorine is more stable and free chlorine lasts longer in distribution system

      • TTHM levels have been cut in half and continue to drop

      • Chlorine use dropped dramatically

Conclusion

  • Ozone can be a great addition to many WTP’s in the USA

  • Growth potential of the ozone market is great

  • Ozone can save costs, while improving water quality

  • In the future, ozone may be the only option for reducing EDC’s

On Site Ozone System Service

For all your ozone equipment servicing needs, check out – On Site Ozone System Service.

ozone system service

Ozone Services can provide on-site service of your ozone system.  We have the technicians and experience required to get your ozone system up and running quickly.

We also have a network of ozone professionals that are placed strategically throughout the United States to provide you with quick service.
We can offer maintenance plans, and routine service to ensure your ozone system continues operating at peak performance

 

Fargo upgrades water treatment plant implementing ozone treatment

FARGO – Workers have been digging a big hole down by the water treatment plant all summer and soon they’ll be driving pilings 100 feet down into more stable ground.

They’re building the first major expansion to the plant at 435 14th Ave. S. since it was built in 1997 when the city’s population was three-quarters of what it is today.

But they’re also building a sort of insurance policy, said Water Utility Supervisor Troy Hall.

Fargo and communities that buy water from the city get their water from the Red River and Sheyenne River, which sometimes have an excess of naturally-occurring sulfate and bromide, salts that affect the taste and odor, and may cause diarrhea.

The water plant’s current coping mechanism is to change the mix, taking in more water from the river with less salt and less water from the river with more.

Hall said it won’t always be able to do that. Flood outlets in Devils Lake are releasing high-sulfate water there into the Sheyenne so the river is brackish more often, which is OK as long as the Red doesn’t run too low or get brackish as well.

“We were kind of nervous a couple of years back because it was pretty dry,” he said.

The expansion will total 65,000 square feet and cost $103.7 million, more than a quarter of which will be paid by the state. The capacity will increase from 30 million gallons a day to 45 million, some of which will be sold to the city of West Fargo to supplement groundwater. The city’s only customer now is the Cass Rural Water District.

Earth is still being removed from the large area on the north side of the Fargo water treatment plant. Dave Wallis / The Forum

Earth is still being removed from the large area on the north side of the Fargo water treatment plant. Dave Wallis / The Forum

Right mix

The level of salts in the Red and Sheyenne tends to fluctuate throughout the year. When snow melts or rain falls, the naturally brackish water is diluted. When water from Devils Lake enters the Sheyenne or when high water in Lake Traverse prompts the U.S. Army Corps of Engineers to release the water into the Bois De Sioux River, a tributary of the Red, those rivers become more brackish.

Hall said he prefers it when the corps releases water from Orwell Dam near Fergus Falls, Minn., which has better quality.

The water plant was built when the water didn’t get brackish that often, so it wasn’t designed to remove salts. Now, when river water enters the plant, it’s softened with lime, treated with ozone to kill microorganisms and filtered. Hall and his team have managed the mix of Sheyenne and Red water such that residents can rarely tell that the taste of their tap water has changed. They don’t use the Sheyenne half of the year when the salts and other minerals are at their highest.

The water plant has done pretty well so far. In October, Fargo water was named the best in the state at the annual American Water Works Association convention in Fargo. Moorhead also won the state contest in Minnesota.

In Fargo’s new treatment system, the water is filtered of small particles and then forced under high pressure through a membrane, which has pores so small that large molecules cannot pass, only water molecules. Plant staff will still need to mix water from the ozone system with the membrane system to achieve the right taste; earlier tests showed the ozone-treated water tends to clog up the membrane, so it has to work separately. With the two systems working together, the plant has much more flexibility.

Hall said it wasn’t very long ago, 1988 and 1989, when the Red River just stopped flowing and the city had to rely on the Sheyenne River alone, and at that time the Sheyenne wasn’t getting any water from Devils Lake.

If the city had to rely only on the Sheyenne now, tap water might start to taste a little funny.

Ozone use for Wastewater Disinfection

Wastewater Disinfection

Ozone used for wastewater disinfection has the potential to lower/eliminate chemical additions into water providing for a green solution and save you money.  Ozone is a powerful oxidant that will provide excellent disinfection to any water stream.  The oxidation potential of ozone is greater than that of all other chemicals used for wastewater disinfection.

Ozone ws initially utilized for disinfection of drinking water starting back in 1906.(history of ozone use)  The use of ozone for wastewater disinfection did not gain attention until the early 1970’s.  By 1984 there were 43 operational municipal wastewater treatment plants utilizing ozone for disinfection in the United States alone.  However, the implementation of ozone in large scale municipal plants stagnated after about 1985.  This was due mostly to the low cost of chlorine, and the lack of regulation on chlorine residuals in water.

Ozone use for wastewater disinfection has again gained attention in recent years.  Ozone is again becoming cost effective and necessary for three main reasons.

  • Chemical costs have increased dramatically in recent years.  Handling costs, storage costs, and cost of the raw chemical have created a for a high cost for traditional chlorine and even chlorine dioxide.  This has allowed ozone to become a more cost effective solution.
  • Regulations are getting tougher to meet with traditional chemicals.  Regulations on e.coli, and coliform bacteria are becoming lower and lower in most every state in the nation, and even worldwide.  Combine this with lower discharge limits on residual chlorine.  This requires higher chemical usage for chlorine removal from water after disinfection.  These lower discharge limits for bacteria, and chlorine create an atmosphere where ozone is very cost competitive, and may be the only viable option for some treatment facilities.
  • Micro-pollutants, or Endocrine Disrupting Chemicals (EDC’s) are becoming a major concern in rivers and lakes where wastewater is discharged.  Ozone orAdvanced Oxidiation Processes (AOP) are proving to be the only viable option for removal of these contaminates in wastewater.

Add to these primary factors that ozone is a green technology that may reduce overall energy consumption and chemical residual in water and ozone looks very attractive for many plants.  Both municipal wastewater treatment plants, and industrial plants, such as meat packing plants have been investing in ozone systems for wastewater disinfection in recent years.

Learn more about ozone and wastewater treatment HERE.