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.

Ozone removes color from water

Ozone does a great job removing color from water.  Ozone is an oxidant and will bleach water efficiently.  We were recently shipped a sample of wastewater from a client looking to have us determine if ozone would remove color from their water.  We were very impressed with the results, and decided to share, see video below for impressive results of ozone removing color in this water sample:

The water sample shown is 250 ml. Ozone is generated from oxygen. Oxygen/ozone flow rate of 1 LPM is initiated about 5 seconds into the video. Ozone concentration is 10% by weight.

For more information on ozone use for color removal in wastewater, see our website at the link below:

https://www.oxidationtech.com/applications/water-treatment/wastewater.html#answer2

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.

Simple evaluation of ozone use for wastewater plants

4-Step Test Tells Waste Plants Whether To Use Ozone.

Is ozone useful for zapping micropollutants, or does it leave too many byproducts? A new test aims to find out.

In a study published in the journal Water Research, a team of experts from three European research institutions “present a test to evaluate the suitability of ozone treatment for urban wastewater,” according to a statement from Ecole Polytechnique Federale de Lausanne, which supported that research along with ETH Zurich and Eawag.

Micropollutants are a hot regulatory issue in Switzerland, where environmental overseers called for around 100 wastewater treatment plants to upgrade their treatment technology. Over the next two decades, nearly one in seven Swiss wastewater treatment plants will be overhauled to improve their micropollutant treatment processes.

Plant operators “have to decide whether to use powdered activated carbon to adsorb micropollutants, or ozone to destroy them,” the statement said.

So, how do they pick?

“According to Urs von Gunten who led the study, both approaches have similar efficiencies, but differ in other important ways. Once used, powdered activated carbon is incinerated with the sewage sludge, effectively destroying any adsorbed micropollutants. However, it requires significant maintenance operations. Ozone treatment, by contrast, is easy to automate and clean to handle. Micropollutants are broken apart chemically, and the fragments are then released into the environment,” the statement said.

As the U.S. EPA points out, ozone has drawbacks. “Low dosage may not effectively inactivate some viruses, spores, and cysts. Ozonation is a more complex technology than is chlorine or UV disinfection, requiring complicated equipment and efficient contacting systems.”

So when should it be used? The new test introduced by the European research team gives operators a four-step process for testing whether ozone is a good choice, per the statement:

von Gunten and his team developed a four-step test procedure to assess whether the wastewater from a specific plant can be safely treated with ozone. Not only does it involve assessing the efficiency of micropollutant abatement and the formation of oxidation byproducts, the test also includes a series of biological assays to test the toxicity of the treated wastewater before and after treatment. “The idea is that the test, which will be carried out by a private laboratory, will assist cantonal agencies and federal authorities in deciding how best to upgrade wastewater treatment plants,” he says.

For similar stories, visit Water Online’s Wastewater Disinfection Solutions Center.

Ozone use in Wastewater Industry Grows

Water Technologies International, Inc. Adds Commercial & Industrial Wastewater Filtration Products

Ozone used in wastewater industry

A “Dealer Agreement” With Simpson Environmental Corporation Grants Water Technologies Exclusive Territories and Begins a Commercial & Industrial Presence in the Municipal Drinking & Wastewater Treatment Sector

 

Water Technologies International, Inc. (OTC PINK: WTII), the leader in the technology in atmospheric water generator’s production and design, announced today that it has become a dealer in wastewater applications. Water Technologies International, Inc. has evolved as a “Pure Water Play” generating and cleaning water. Water Technologies, through its wholly owned subsidiary Aqua Pure International, Inc., is now a dealer for Simpson Environmental Corp providing commercial and industrial wastewater solutions. The agreement grants Water Technologies exclusive territories for the sale of existing products in China and several states in the U.S.A.

Simpson Environmental Corporation is a manufacturer, distributor and exporter of air and water treatment products and systems. Its head office and manufacturing facility is in Burlington, Ontario, Canada. The Company was founded in 1959 and is a leader in the application of oxidation technologies based on the use of corona discharge ozone generators. The Company was one of the first to file Canadian and U.S. patents for ozone generators used in water treatment. It currently has a U.S. Patent and a Canadian patent filed on the core technology used in its various water treatment systems. The Company’s products are characterized by their small size, light weight, low energy consumption, reliability and competitiveness.

The Company provides a full range of services to support a variety of water treatment applications. These services include turnkey solutions for its customers utilizing its proprietary ozone technology along with filtration, dewatering, membrane, electro-coagulation and ultra-violet technologies to treat potable or wastewater to required use, discharge or water reuse requirements. Recently, the Company has launched a line of pre-engineered, packaged potable water and wastewater treatment products for global remote village or mining and construction camp markets. The following is a partial listing of typical applications; commercial laundry, aquaculture, cooling towers, commercial drinking water, water bottling, food disinfection, Municipal and industrial wastewater treatment systems and industrial food processing.

Water Technologies, Inc.’s CEO, William Scott Tudor, said, “I am excited to have additional products in the wastewater treatment arena. We have been working to expand our product line into the commercial and industrial market place. There is a need for this technology in China and other major market countries. Water is becoming more of an issue here and abroad and this translates into opportunities for the Company!”

For a direct link to our new line of “Water Filtration” and “Wastewater Products” visit our website at the “Our Products” tab under “Packaged Wastewater Plants” at: http://www.gr8water.net/products/packaged-wastewater-plants

For a direct link to a copy of the company’s “Atmospheric Water Generators” product information “Slick Sheets” visit our website at: www.gr8water.net/products/product-slick-sheets.

About the Company

Water Technologies International, Inc. and its wholly owned subsidiaries, GR8 Water, Inc. (Great Water) and Aqua Pure International, Inc. (Specializing in Filtration & Wastewater Systems) are engaged in the manufacture and distribution of technologically advanced Atmospheric Water Generators (AWG). These unique devices utilize a patent pending air purification input system to produce clean, great-tasting, safe water from the humidity in the air. GR8 Water makes freestanding water factory units for the home or office and large, industrial-sized water units using a modular design that can produce up to thousands of gallons of water each day from ambient air. GR8 Water strives to make safe drinking water available to everyone on the planet, making the world a better place in which to live while nurturing the environment. The Company has patents issued by the USPTO and has filed for additional patents with the USTPO. It has also filed globally through the Patent Cooperation Treaty. Its “Water village” trademark has been issued by the USPTO.

A video showing the proof of concept prototype is available at the company’s website, www.gr8water.net

Statement as to Forward-Looking Statements.

Forward-Looking Statements certain statements in this release that are not historical facts are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Such statements may be identified by the use of words such as “anticipate,” “believe,” “expect,” “future,” “may,” “will,” “would,” “should,” “plan,” “projected,” “intend,” and similar expressions. Such forward-looking statements involve known and unknown risks, uncertainties and other factors that may cause the actual results, performance or achievements of the Company to be materially different from those expressed or implied by such forward-looking statements. The Company’s future operating results are dependent upon many factors, including but not limited to the Company’s ability to: (i) obtain sufficient capital or a strategic business arrangement to fund its expansion plans; (ii) build the management and human resources and infrastructure necessary to support the growth of its business; (iii) competitive factors and developments beyond the Company’s control; and (iv) other risk factors. We assume no obligation to update the information contained in this news release.

Water savings in restaurant kitchens using ozone!

Water conservation throughout the world continues to be important.  Ozone technologies can play a large role in the conservation of water, and the safe re-use of waters.  EnviroPure has found a creative way to save water in the foodservice industry.  With water bans in California and certainly coming to more states this could be very valuable and useful product.

NRA’s Kitchen Innovations Award given to EnviroPure ozone recirculation system

TRAVELERS REST, S.C. — T&S Brass and Bronze Works announced its EnviroPure ozone recirculation option has received the Kitchen Innovations Award from the National Restaurant Association (NRA), according to a press release.

The ozone recirculation option is designed to eliminate the need to add fresh water during the organic food waste disposal system’s digestive process, and instead, rely on naturally extracted water from food waste as it processes through the system, stated the release.

“A typical foodservice operation could expect to save about 400 gallons of water a day using this ozone infusion option,” said EnviroPure Systems Inc. President Jim Slanina. “At a time when we’re beginning to realize water is not an unlimited resource, we think this will be a welcome innovation.”

The EnviroPure system has received several industry awards since its acquisition by T&S in 2013, noted the release.

“We’re terrifically pleased that the NRA has recognized the uniqueness of this new ozone treatment option,” stated Slanina. “To the best of our knowledge, no other process like it exists in the market, and we’re very excited about having an impact both on saving water and keeping food waste out of landfills.”

The EnviroPure ozone recirculation option will be featured at the Kitchen Innovations Pavilion at booth 2440 during the NRA Show 2015, noted the release.

Ozone use for Food Waste Disposal

EnviroPure announces optional ozone recirculation addition for food waste disposal systems

TRAVELERS REST, S.C. — EnviroPure Systems Inc., a T&S company, announced it has introduced an ozone recirculation system as an optional addition to its on-site organic food waste disposal systems, according to a press release.

Eliminating the need to add fresh water during EnviroPure’s digestion process, the recirculation system relies instead on water naturally extracted from food waste as it processes through the system, stated the release.

In 24 hours, EnviroPure breaks down food waste through a combination of aerobic decomposition and mechanical processing, with the end result being a safe, graywater byproduct “that meets, and often surpasses, municipal wastewater requirements,” reported the release.

The graywater is then treated with ozone and recirculated in the bubbler tank until further needed in the digestion process, and any excess water will be streamed into the graywater effluent for use or disposal in irrigation, noted the release.

“With a typical schedule of grinding food waste ten times a day, a foodservice operation could expect to save about 400 gallons of water daily,” said EnviroPure President Jim Slanina. “That’s a significant amount of water so, from a sustainability standpoint, the ozone system has tremendous appeal. And from a cost standpoint, saving water saves energy as well, so this is a win-win benefit all around.”

 

Ozone used for odor control at wastewater plant

Ozone use for odor control is common and widespread.  Ozone is commonly used for odor control in casino’s, bars, hotels, and disaster restoration.  You can bet that if you have mold, or fire damage in your house, one part of the restoration process will be ozone treatment to remove the residual odors from the air.

Ozone is also used in some industrial applications and workplaces.  Rendering plants, meat packing plants, and pet food manufactures will use ozone to eliminate odor and make a more friendly work environment.  We have even been involved in applications where ozone is used in spice warehouses to reduce nuisance odors to neighbors.

Another common application of ozone over the years is waste-water disinfection.  Ozone can be used to reduce pathogens in waste-water prior to discharge.

An application gaining popularity is the use of ozone to reduce odor from waste-water.  This makes great sense as come waste-water treatment plants have a great deal of foul odor.  As the population of the earth grows the land near the waste-water plant becomes valuable, therefore encouraging operators to reduce foul odors from plants.

A great article on this application can be found below:

Ozone treatment proposed for some of Phuket’s stinking wastewater

PHUKET: Phuket Vice Governor Sommai Prijasilpa is pushing to install ozone generators throughout Rassada as a long term solution to wastewater problems in the area.

The vice governor yesterday afternoon inspected the new ozone generator used to treat water at Soi Paniang to determine whether the same machine could be used in Rassada.

“This machine was developed at Kasetsart University in Bangkok,” said Kanok Nakaew, chief of Research and Development at the Center for Energy and Environmental Engineering Laboratory at the university.

“It uses the advanced oxidation process, during which ozone is added to the water to kill off harmful bacteria such as coliform.

“Coliform can create negative effects if ingested by humans, including diarrhea and cramps.”

Mr Kanok added that water treated using the ozone generator meets the standards of the Pollution Control Department.

“The small ozone generator in Soi Paniang was installed as a short-term solution, but after seeing how it works I would like to see it installed throughout Rassada as a long-term water-treatment system,” Vice Governor Sommai said.

Mr Kanok explained that the treatment capacity of the generator varies according to the size of the machine.

“We would need to calculate how many machines are needed and how much water each one would be treating to know what kind of budget would be needed,” Mr Kanok said.

Rassada already has a 14-million-baht budget set aside for a long-term water-treatment system, said V/Gov Sommai, but it has not yet been decided which system to use.

“At our next budget meeting, I will propose ozone generators as a long-term wastewater solution. We should have an answer to the problem soon after,” V/Gov Sommai said.

Ozone used to reduce wastewater sludge

Xylem’s Wedeco Ozone Technology Reduces Wastewater Plant Sludge By 43 Percent

Xylem,a leading global water technology company dedicated to solving the world’s most challenging water issues, successfully reduced the amount of sludge produced by a wastewater treatment plant in Ardea, Rome in Italy by 43 percent, saving more than €170,000 annually in landfill costs. Xylem’s Wedeco SMO evo ozone system that reduced the sludge also delivered a significant reduction in man hours required to remove and dispose of sludge produced.

The municipality of Ardea launched a significant redevelopment programme, central to which was the creation of an efficient wastewater treatment service capable of treating wastewater for the population of more than 70,000. It was necessary to increase the capacity of the existing plant in order to meet future population growth in the region.

Another key requirement of the wastewater treatment solution was to reduce the amount of sludge produced in order to decrease disposal costs and man hours. It was also essential that it deliver a consistent and stable treatment service throughout the year.

Despite the use of centrifugal pumping capable of eliminating most of the moisture, the plant at Ardea produced 3,000 tonnes of sludge per year which had to be disposed of. Xylem recommended its Wedeco ozone technology which successfully reduces the amount of sludge produced as well as dramatically reducing the amount of filamentous bacteria.

Xylem’s Wedeco ozone solution has delivered a dramatic improvement to the plant’s performance, reducing the amount of sludge produced by 1,300 tonnes per year.

About Xylem
Xylem (XYL) is a leading global water technology provider, enabling customers to transport, treat, test and efficiently use water in public utility, residential and commercial building services, industrial and agricultural settings. The company does business in more than 150 countries through a number of market-leading product brands, and its people bring broad applications expertise with a strong focus on finding local solutions to the world’s most challenging water and wastewater problems. Xylem is headquartered in Rye Brook, N.Y., with 2013 revenues of $3.8B and more than 12,500 employees worldwide. Xylem was named to the Dow Jones Sustainability Index for the last three years for advancing sustainable business practices and solutions worldwide.

The name Xylem is derived from classical Greek and is the tissue that transports water in plants, highlighting the engineering efficiency of our water-centric business by linking it with the best water transportation of all — that which occurs in nature. For more information, visit www.xyleminc.com.

About WEDECO
With the experience of more than 250,000 systems installed worldwide and technical expertise in the field of ultraviolet and ozone technology since 1975, WEDECO is one of the most progressive brands in the area of water purification. Interdisciplinary research groups made up of engineers, biologists, doctors and physicists work to continuously develop and optimize the WEDECO systems. As a result, around the world, WEDECO water treatment systems are playing a critical role in ensuring the availability of water that is safe for humans and the environment. For more information about WEDECO products, visit www.xylem.com/treatment.

Ozone removes pharmaceuticals from wastewater

Application of Ozonation in Removing High Dosages of Pharmaceutical Effluent from Wastewater

 

By AZoCleantech.com Staff Writers
Read full story here

Topics Covered

Introduction
Micro Pollutants and Pharmaceutical Residue
Use of Ozone in Pharmaceutical Residue Removal
Ozone Installations in Sweden for Pharmaceutical Residue Removal
Conclusion
About Primozone

Introduction

Sex change in fish due to the presence of pharmaceutical residue in river water was a problem first noticed around a decade ago. Behavioral change in perch has been observed in recent studies on pharmaceutical residue. The presence of micro pollutants such as pharmaceutical residue in waste water has been found in many studies. Without being properly treated by the waste water treatment plants, this water is often released into the environment.

Several European nations are now taking political action to lower the impact of the pharmaceutical residue. For instance, the decision has been made in Switzerland to equip 100 sewage plants with systems to eliminate pharmaceutical residue.

Micro Pollutants and Pharmaceutical Residue

All micro pollutants are bioactive and persistent. Biologically harmful materials such as arsenic, mercury, lead, hydrocarbons, pesticides, and personal care products such as sunscreen, cosmetics, and fragrances are some of the examples of micro pollutants. Since pharmaceuticals are not engineered to buildup in the body, they leave the body and reach waste water. However, they are also designed to be persistent and degrade very slowly in nature.

Another concern is the bioactive nature of pharmaceuticals. Household sewage is the major source of pharmaceutical effluent, representing 70% of the pharmacutical residue, according to some studies. Livestock farming represents 20%, while hospital effluent represents only 5%. Nevertheless, hospitals have taken initiatives to decrease the pharmaceutical effluent. Primozone is involved in a full scale project at the Herlev Hospital in Denmark (Figure 1) to integrate ozone with other technologies for pharmaceutical residue reduction.

Figure 1. Primozone installation at the Herlev Hospital in Denmark

Use of Ozone in Pharmaceutical Residue Removal

The majority of waste water treatment plants have not been equipped for pharmaceutical residue removal. Studies have revealed that only 10% is removed at the treatment plants, whereas 20% ends up in sludge and as high as 70% reaches the aquatic environment. Only a limited number of efficient techniques are available to lower the level of pharmaceutical residue in water.

Traditional biological and mechanical treatment techniques are inadequate as they degrade only a small portion of the pharmaceutical residue. Conversely, being a selective oxidant, ozone largely attacks electron rich structures such as double bonds in molecules. By doing this, it can efficiently break down pharmaceuticals. The Primozone ozone technology allows ozone to be used as a cost-effective solution for pharmaceutical residue removal.

Most studies reveal that ozone can remove up to 95% of the pharmaceutical residue, depending on the retention time and dosage. According to a Primozone study, ozonation after filtration can eliminate 95% with 5g ozone/m3 water. Studies also recommend the use of sand filters after ozonation to achieve further cleaning of the water.

Ozone Installations in Sweden for Pharmaceutical Residue Removal

Sweden devotes a lot of attention to research exploring the ways for pharmaceutical residue reduction in waste water. The problem has been identified in many waste water treatment plants and several Swedish universities are carrying out studies on the impact of the pharmaceutical residue on the environment. Swedish governmental bodies are providing grants to encourage more research into this area.

Primozone has been awarded a grant to construct a mobile pilot scale ozone system to remove pharmaceutical residue. This year, the company will perform pilot installations at 10 waste water treatment plants in Sweden to test and corroborate the design of an optimal ozone solution on existing waste water treatment facilities for pharmaceutical residue removal from various water flows and under different environmental conditions.

Conclusion

According to Primozone, it is now necessary to remove micro pollutants such as pharmaceutical residue in waste waters. However, current waste water treatment plants are not equipped to eliminate pharmaceutical residue. Nevertheless, proven techniques such as the Primozone ozone technology are available to help reduce the level of pharmaceutical residue in waste water at a lower cost.

About Primozone

Primozone is redefining ozone technology with its cutting-edge ozone generator technology and it’s custom designed ozone solutions. The Primozone ozone technology enables a very high ozone concentration (20wt%) and at a very low life-cycle cost.

Primozone was founded in 2000 and is since 2003 wholly owned by Westfal-Larsen Technology of Bergen, Norway. The W-L group is a family-owned group of companies founded in 1905.

The Primozone ozone generation technology is sold worldwide and used for different industrial water treatment and water reuse applications as well as municipal drinking water and waste water applications.