IOA tried something new this year to promote questions and small group discussions: a round-table discussion. I learned that European biocide regulations have thrown some serious obstacles in the way of ozone producers generating over 1 ton of ozone per year. Not only do the regulations demand a mountain of paperwork, they insist on proving ozone effectiveness with lab procedures designed for chemical testing that simply do not work with ozone.
Ozone has tremendous potential for food safety. Some bumpy history using ozone seems to have raised distrust and frustration in the food industry. Well planned systems that target specific needs and follow food safety regulations are needed to bring the power of ozone back into the fight for safe food. Oxidation Technologies will custom build safe and effective ozone systems to fit a wide variety of food safety needs.
Ozone increases the effectiveness of eye infection treatment, helps reduce the propagation of antibiotic resistant pathogens in agricultural irrigation systems, and effectively destroys nematode eggs in irrigation water. Three presenters at IOA 2018 gave us a look at ozone use in the medical field and agriculture. These applications require robust and carefully controlled ozone systems. Oxidation Technologies specializes in custom systems for innovative applications.
Municipal water treatment has gotten the lion’s share of attention with ozone. As we begin to discover its potential for other applications, this is beginning to change. The opening plenary session and keynote address by Rick Warnerat the Tuesday morning presentations emphasized the need for IOA to widen its focus to include more support for industrial and medical applications of ozone. This goal is in harmony with the theme, “We are only beginning to discover ozone’s potential.” IOA is planning to expand its committees to encompass more of these applications.
Authenticity and Legitimacy of Ozone
As more applications, research, and discoveries for ozone use are developed, ozone is becoming more a part of people’s lives. For example, ozone systems are being tested on smaller scale water re-use treatment within a business building or living complex. These systems help relieve the increasing water stress in many parts of the world. As such applications increase, more people encounter ozone use. Those involved in ozone applications have a responsibility to strive for authenticity and legitimacy in their work and public interaction. We can all help promote the legitimacy of ozone with promoting sound information, collaborating with experts, using resources in the community such as University research, or doing demonstration projects. Oxidation Technologies LLC is committed to promoting the legitimacy of ozone by publishing the best information we can, educating people about effective and safe ozone use, and transparency in our work and systems.
This week during the IOA show in las Vegas, I had the opportunity to meet up with PHD candidate Hooman Vatankhah. He was one of our recent clients who was in need of a high concentration ozone analyzer, calibration services as well as some consulting to assist in his ozone research at the Colorado School of Mines.
Since 2015 the IOA-PAG has been holding a silent auction at their annual conference to fund a Memorial Scholarship Award in the honor of past IOA leaders including Dr. Rip Rice, Mr. Kerwin Rakness, Dr. Gordon Finch, and others.
Hooman, along with 5 other students from other universities were recipients of the 2018 Memorial Scholarship, and presented their ozone research.
His research was the Evaluation of Enhanced Ozone-Biological Active Filtration Treament for the Removal of 1,4-Dioxane and Mitigating the Formation of Disinfection Byproducts.
Ozone research is key to better understand how ozone could be beneficial in many applications, and I happy to be apart of it by providing our products and services!
See Hooman’s Abstract below:
Abstract: With dwindling available water supplies in the Unites States and many regions worldwide, potable reuse of municipal wastewater effluent has become an imperative component of water resource management to mitigate the global water resource risk .Conventional potable reuse applications employ ‘full advanced treatment (FAT)’ consisting of microfiltration (MF), reverse osmosis (RO), and advanced oxidation processes (AOPs: mainly using a combination of ultraviolet (UV) and hydrogen peroxide (H2O2) treatment) that provide acceptable performance in removing bulk organic matter, micropollutants, pathogens, and bio-toxicity. Limitations of RO however, include high operation costs, concentrate disposal, and strict requirements for influent water quality (i.e. organic matter content and suspended solids), which have caused several utilities to consider more sustainable alternative treatment technologies. Implementation of an alternative reuse process component consisting of ozonation followed by biological activated filtration (BAF) has gained considerable attention especially for waters with low salinity or waters with blending capacity in case of elevated total dissolved solid (TDS). The objective of this study was to assess and compare the O3-BAF with enhanced ozonation (O3/GAC)-BAF treatment of sequence batch membrane bioreactor (SBMBR) effluent for removal of 1.4 dioxane. Moreover, the effectiveness of O3-BAF, and (O3/GAC)-BAF for removing of 35 regulated and unregulated halogenated DBP precursors, 7 N-nitrosamines, and bromate was investigated.
It did not take long for me as someone new to the ozone industry to target Bromate formation as one of the big challenges of water treatment for drinking. We can use ozone to remove multiple toxic pollutants, but in the process run the risk of forming a new one that is challenging to remove. I came to the IOA conference with some questions in the back of my mind and was glad for the opportunity to attend the workshop on “Bromate Formation and Minimization Strategies” by Eric Wert. Bromates are toxic chemical compounds formed in the chemical reaction between bromides and ozone and other oxidizing agents used to treat water. Ozone is very useful for many components of water treatment for drinking water, but the side effect of bromate formation is a problem that needs to be addressed. Bromides are naturally found in the water supplies we use for drinking water and the levels are increased in wastewater as a byproduct of the chemical industry, waste incinerators, and fire retardants. The chemical formation mechanism for bromate is complex but offers some clues for ozone treatment methods that minimize the formation of bromates. Since the chemical reaction that forms bromates is complex and relatively lengthy, reducing the contact time of bromides with ozone to 3 seconds or less will result in less bromate formation in a side-stream ozone injection system.
The problem of bromates in drinking water will continue to be a problem in the foreseeable future. We can continue to work at solutions by sharing knowledge and creative strategies for keeping our water clean and healthy.
As water and wastewater treatment plants continue to work out the details of ozone use in the variety of different water treatment situations around the world, we see new innovations unlock more ozone potential and a steady increase in ozone use. Not only do we see ozone used for disinfection and color/taste/odor treatment, but ozone can be used to improve filter performance and help remove Pharmaceuticals and Personal Care Products (PPCPs) along with Endocrine Disrupting Chemicals (EDCs) found in the water. The fields of water filtration, hydraulic systems, and chemistry need to work together to make new discoveries and techniques for solving problems with ozone.
On Monday, August 20 the International Ozone Association (IOA) hosted an ozone process workshop giving an overview of ozone and Advanced Oxidation Processes (AOPs). Seven presenters representing various research organizations and water treatment operations around the country reviewed the basics of AOP fundamentals and considerations for safe and successful process operation and maintenance. Four companies set up materials for practical, hands-on instruction in feed gas, ozone generator and destruct repair and maintenance, ozone mass transfer, and ozone safety and monitoring. The discussion and problem solving generated by these presentations served everyone from the large treatment facility to specialized applications such as medicine, food production, or ground water remediation. I am very excited about this growing industry and will share some of the ideas and information that I am learning as someone new to the industry.
A great opportunity to learn from the masters in the field of ozone is just around the corner. As a new student in the field of ozone, I am grateful for the opportunity to attend the International Ozone Association conference meeting this coming week in Las Vegas. I look forward to meeting the people who have been at the cutting edge of this industry over the years. Hope to see you there!