Water Reclamation – IOA 2019

Behind the scenes at the Atlanta Aquarium. Filtration and ozone equipment in the background.

Ozone use to control odor and pollutants in large water treatment plants is well documented and growing. In addition to disinfection benefits, the ozone breaks down pollutants so that they are better removed with bacteria and filtration. The research and testing for these large plants provides a rich resource for developing a variety of small scale water treatment systems for applications like aquariums, car-washes, building water reclamation, and water condensate treatment.

The IOA convention this year provided an opportunity to visit the Atlanta Aquarium. This aquarium is the largest in the western hemisphere and is home to four whale sharks and over 100,000 other aquatic residents. The filtration system recycles the 10 million gallon capacity in approximately 1.5 hours. The filtration system incorporates ozone to maintain water clarity and disease control. The stunning display of aquatic life and continual maintenance of its health speaks well for the power of ozone.

Many of the presentations at the 2019 IOA convention presented research and studies relating to water treatment plants that treat over 500 million gallons of water per day. The aquarium was a great example of this process on a smaller scale. One of the presenters shared a project of implementing ozone to treat water-reuse for a train-car wash facility. Ozone was used to address a concern of biological contaminants picked up by the vehicles and entering the wash water. Ozone eliminated the danger of pathogens making the operators sick.

Ozone works well by itself for destroying pathogens, but needs help with filtration methods to clean up the left-over scraps. Many studies conducted for large waste water facilities demonstrate that ozone is often most effective for odor and pollutant removal when combined with filtering and/or hydrogen peroxide. Ozone alone will break down many pollutants, but some compounds require more energy. Hydrogen peroxide in the presence of ozone generates powerful oxidizing molecules
Hydroxyl Radical (OH-) which are even more effective. Ozone often breaks pollutants down to the point where they are more easily digested by bacteria in a biologically active filter (BAF). The ozone causes some molecules such as dissolved iron to coagulate so they are larger and can be filtered out.

Our team at Oxidation Technologies has worked with various food and recycling industries looking for ways to reclaim water for further process use. We are dedicated to understanding your process so that we can provide the equipment and resources you need and stay within your budget. We offer rental systems  that can be used for experimentation before committing to a permanent system designed to fit your application.

Groundwater Remediation: Ozone against BTEX

While ozone is most commonly used for water treatment, it is also very effective against soil and groundwater pollutants and can be used for groundwater remediation. Ozone has been used to treat a wide variety of soil and groundwater contaminants and can sometimes even be used against contaminants that cannot be removed by any other technology. Ozone breaks down these contaminants leaving only carbon, oxygen, and water as by-products, making it an environmentally safe solution while removing pollutants as quickly and efficiently as possible.

Below is a list of groundwater contaminants that are commonly treated using ozone

Of these substances, one of the most common to be treated by ozone is BTEX. BTEX is a term that refers to mixtures of benzene, toluene, ethylbenzene, and xylene isomers. These aromatic hydrocarbons contaminate groundwater leaving, polluting it with unpleasant odors and, causing a variety of health concerns ranging from mild headaches and nausea to unconsciousness and even death. In fact, benzene has been categorized by IARC as a group one carcinogen and exposure to this chemical has been linked to cancer.

Ozone is great at purifying groundwater because it is highly soluble in water and one of the strongest and fastest acting oxidants available. Ozone has become a popular solution for in-situ BTEX removal because it offers a quicker clean-up time and lower overall costs for remediation.

Oxidation Technologies has conducted some of its own testing to determine the effectiveness of in-situ removal of BTEX and other pollutants using ozone. The diagrams below feature data gathered from a bench test we performed to evaluate ozone demand for a pump and treat system which we later implemented.

Because benzene is so dangerous, we also ran some tests for benzene specifically. The following diagram was generated using data from two separate wells and shows how quickly benzene can be removed when exposed to ozone.

Click here for additional site data using ozone for in-situ remediation.

At Oxidation Technologies, we offer a wide variety of ozone systems that are great for in-situ chemical oxidation. Most common among them are the complete turn-key trailers. Our modular systems allow you to install our system in an existing enclosure on-site. We also offer ozone injection systems which work by dissolving ozone gas in water while off-gassing excess ozone in the process. Many of our systems are available to pilot test which can help guarantee you get the right ozone system to suit your needs.

Trailer mounted ozone systems Modular ozone systems Cabinet mounted ozone systems

 

 

All new ozone systems for remediation applications

Pilot systems currently available

 

Ozone remediation is safe, efficient, and cost-effective. More information on groundwater remediation and our ozone remediation products can be found on our website or by contacting us directly.