XP Ozone Detection made easy

Measuring ozone or other oxidation gasses in hazardous locations requiring explosion proof equipment got easier.  The D12 Gas Detector from ATI is a great solution for your ozone detection needs.

D12 XP Rated Gas Sensor
ATI D12 Gas Detector with integral sensor holder

Ozone detection ranges from ppb detection to 1,000 ppm are possible with the easy to replace Smart Sensor used in the D12 Ozone Detector.  The D12 is also available with an automated auto-test generator that can test and verify the response of your ozone, or other oxidant gas sensor nightly.  This alone can save labor costs, and provide safety for your personnel.

D12 Ozone Detector with auto-test generator
D12 Ozone Detector with sensor removed. Image shows the location for the Auto-test generator next to the standard ozone sensor in the integral sensor holder.
D12 Ozone detector sensor holder
D12 Sensor holder with ozone sensor ant auto-test generator installed

The D12 Ozone Detector is easy to use and set-up.  Ready to use upon delivery, only needs electrical power delivered to the unit.  Electrical power can be provided with low voltage 12-24 VDC, or 100 – 240 VAC.  The D12 also provides options for datalogging, digital interface, 4-20 mA, and internal control relays.  Easy to read display with push button interface makes the D12 easy to use.

Ozone detector for XP applications
D12 Ozone Detector with cover removed to interact with controls.

For additional details or ordering information follow this link.

Downloads:

D12 Product Spec Sheet

D12 Product Manual

D12 Support Drawings

Links to more info:

Calibration information

ATI Specific Calibration Information

City Tyler, Texas increases use of ozone in drinking water plant

City makes process changes to improve drinking water

read complete story here

Tyler Water Utilities (TWU) has made several process changes to improve its water quality since November, including increasing the use of ozone, enhanced coagulation and the addition of sodium hydroxide in the water treatment process.

The increased utilization of ozone at the Lake Palestine Water Treatment Plant was a recommendation from Enprotec/Hibbs &Todd, Inc. (eHT) who was hired by the Mayor and City Manager to evaluate Tyler Water Utility’s processes.  Ozone is used to reduce precursor organics related to the formation of problematic disinfection byproducts. Additionally, it has improved water quality by reducing taste and odor-related complaints.

“TWU continues to research ways to reduce disinfection byproducts and improve water quality by utilizing ozone,” said Environmental Compliance Engineer Clayton Nicolardi.  “The City is working with the TCEQ to identify alternative treatment strategies that rely more on the use of ozone for disinfection credit allowing for the reduction of disinfectants related to the formation of byproducts such as haloacetic acids and trihalomethanes.”

The second treatment strategy implemented is enhanced coagulation.  This process, like ozone, is utilized to enhance the removal of precursor organics prior to the addition of disinfectants often associated with the production of regulated byproducts. The results thus far have been promising.

The third change made by the Utilities Department was the addition of sodium hydroxide feeding capabilities at the Lake Palestine Water Treatment Plant in November of last year.  Sodium hydroxide is used primarily to improve water stability by increasing the pH and alkalinity of drinking water, thus reducing the potential for corrosivity which can lead to increased levels of lead and copper.

“This change has shown significant improvement as documented by the recent test results collected at five sampling locations that exceeded the action limit for lead and cooper last September,” said City Manager Ed Broussard. “In the most recent sampling conducted this week, Tyler is in compliance with standards set by the Texas Commission on Environmental Quality for Lead and Copper.”

In response to these positive results at the Lake Palestine Water Treatment Plant, TWU began the process of implementing the same treatment strategy at its Golden Road Water Treatment Plant.  Due to the age of the plant, certain modifications had to be completed prior to implementing the use of sodium hydroxide.  This week, operators and crews are working on the last phase with the installation of the necessary feeding equipment.

“TWU strives to give the City of Tyler the best drinking water possible,” said Environmental Compliance Engineer Clayton Nicolardi.  “After reviewing processes and documenting test results in the spring of last year, TWU became aware of opportunities to enhance its water quality.  We began the process of getting approval through the TCEQ.  The TCEQ was very helpful in expediting the approval process allowing TWU to begin implementing changes in November of last year.  Significant improvements have been documented since.”

The most recent test results for the current quarter for haleocetic acids show that all sampling locations fell below the maximum limit permitted.  Because the TCEQ requires notification of residents based upon a four quarter average, Tyler will need to continue to notify customers until the peak month last spring rolls off.

“I am very pleased with the progress that is being made thus far,” said Tyler Mayor Martin Heines.  “By implementing many of the suggestions from the third party review, we have seen our water quality improved.  This does not mean that we are done.  We have a lot of work to do to ensure we are maintaining our infrastructure in a way that we can be proud of and that will continue to be a priority for term as Mayor.”

TWU is currently working with the TCEQ in organizing a more robust sampling protocol which includes approximately 300 sampling events for 2016 for lead and copper levels.  These samples will be targeted at the customers’ tap as well as surface water and ground water sources.  Residential sampling sites are selected based on year of construction and the potential that they may have plumbing materials containing lead and copper.

Learn more about the use of ozone in drinking water HERE

 

New OST Ozone Injection System

Oxidation Technologies has recently finished testing and started shipping the new OST Ozone Injection System series.  These Ozone Injection Systems are constructed of all stainless steel wetted parts and skid.  Great for food processing and bottled water applications where stainless steel construction is a must.

OST Stainless Steel Ozone Injection System
OST-8 Ozone Injection System

Ozone production rates from 8 – 100 g/hr capable of dissolving ozone in water flows from 20 – 100 GPM.  There is a wide variety of application and uses for the OST Ozone Injection System.

OSX Ozone Injection System
Outline of components of Ozone Injection System

How it works:

Ozone is produced via corona discharge with a high concentration  Ozone Generator.  Ozone is produced from oxygen that is provided with the integrated oxygen concentrator.  Ozone and oxygen are pullled through the ozone generator, and into the water with a Mazzei venturi.  The Mazzei venturi pulls ozone into water via vacuum and mixes this ozone efficiently with water.  Water pressure differntial accross the venturi is prodcued with a stainless teel Grundfos water pump.  

Ozone is mixed with the water in our exclusive ozone contact chamber.  The stainless steel ozone contact chamber is small, but efficient.  Eliminating the large water tank saves cost, space, and makes a more efficient ozone system.  This ozone contact chamber will efficiently mix ozone gas with the water and provide excellent mass transfer of ozone gas with the water.  All excess ozone will be off-gassed through the air vent on the top of the ozone contact chamber.  Water will flow through the ozone contact chamber in a counter current flow from the ozone gas escaping from the tank.  All process water must flow through this tank offering contact time with ozone and water and efficient mixing of ozone and water.

Oxidation Technologies ozone water system
Ozone Injection System flow diagram

For questions about using ozone for your application, call our application engineers today.  You can also view all our ozone injection systems HERE.

Download OST-Series Brochure

Ozone produced electrolytically

ELECTROLYTIC OZONE PRODUCTION

Ozone can be produced directly in water using electrolytic ozone generators. This has huge advantages as the contacting equipment normally required for dissolving ozone gas into water is not required.

Electrolytic ozone production
Electrolytic Ozone Generator

Electrolytic ozone generators use an electrical discharge in the water to split the water molecule (H2O) into H2 + O2. This O2 can also be split into O and combine to create O3. This will require a method to isolate oxygen from hydrogen and electrically charge this oxygen into ozone. Much work has been done working with catalysts, anodes and cathodes to improve efficiencies. However, this method is still unreliable in any water other than ultra-pure water, and is energy inefficient.

 ADVANTAGES OF ELECTROLYTIC OZONE GENERATOR

  • Ozone produced directly in water, no ozone contacting equipment or off-gassing equipment required
  • Compact design and size

DISADVANTAGES OF ELECTROLYTIC OZONE GENERATOR

  • High energy consumption
  • Short life of anode and cathode used for electrical discharge

Ozone Production – How Ozone is Produced

Ozone used to remove algae from lakes

Ozone: Best Practice For Fighting Algae?

Read full story here

By Sara Jerome

Ozone removes algae from water
Ozone used for removing algae safely from water

Water experts in algae-prone areas are rallying behind ozone treatment as the top way to fend off algae toxins.

Michael Beazley, administrator in the city of Oregon, OH, says it is a preferred treatment method in his municipality.

“Ozone treatment is really the emerging, best practice to deal with surface water,” Beazley said, per The Toledo Blade.

Doug Wagner, superintendent of water treatment, emphasized the effectiveness of ozone for fending off algae toxins.

“Once you get ozone added into the treatment, you’re going to eliminate any chance of microcystin getting into the tap water,” he said, per the report. “[The algae problem] isn’t going to go away, so we’re going to hit it head-on.”

Oregon came to these conclusions after a good bit of research. The plant ran a pilot program for five months last year, treating four gallons of water per minute with ozonation. The pilot project included a contact chamber and a biological filter.

“It was like a microplant,” Wagner said, per the report. “We had four columns that had different filter profiles in each one to put the ozonated water through to see which one would grow the best bacteria that would consume the organics in the water.”

Officials say the new system will reduce chlorine levels in the drinking water. They should have the new processes in place in 2017. Officials argued that ozone produces fewer disinfection byproducts, known as trihalomethanes. The EPA notes that ozone is one of the strongest disinfectants available for drinking water treatment.

Oregon officials were spurred to action by Toledo’s algae crisis two years ago, when around 400,000 residents were unable to use their water for over two days due to toxic algae contamination, according to CNN. Oregon was not part of the Toledo ban, but it also draws water from Lake Erie.

“The city’s water intake is in Lake Erie, but it is separate from Toledo’s. When lake water reaches the Oregon’s treatment plant, ozone combines with electricity to break up any organic contaminants in the water into smaller pieces. What’s left goes through biological filtration. The system kills algae-related toxins in about eight-tenths of a second,” The Blade reported.

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

Ozone production from corona discharge

COMMERCIAL OZONE PRODUCTION FROM ELECTRICAL DISCHARGE

The most common method of producing ozone commercially and industrially is electrical discharge, or corona discharge. A corona discharge is simply a diffused spark through a dielectric to spread out that electrical discharge to a large area for maximum efficiency.

ozone production from corona discharge
Corona discharge ozone generator

There are many types and styles of corona discharge ozone generators. These go by many names, but are fundamentally the same, using these components:

  • Corona cell using a dielectric
    • Dielectric material may be glass, ceramic, or quartz
    • Dielectric may be conical, or flat plate
  • High voltage transformer to increase voltage of the electrical discharge
  • Power supply to regulate power to transformer
    • 60Hz machines will only regulate the voltage to the transformer
    • High frequency machines (greater than 60 Hz) will regulate frequency and/or voltage to transformer

 

ADVANTAGES OF CORONA DISCHARGE OZONE GENERATOR

  • Scalable and can create very large amounts of ozone
  • Creates ozone at medium to high ozone concentrations (up to 30% by weight)
  • Cost effective for long term operation
  • Low maintenance

DISADVANTAGES OF CORONA DISCHARGE OZONE GENERATOR

  • High cost for initial capital investment
  • Creates excess heat that must be removed for efficient operation
  • Requires very clean, dry air/oxygen feed-gas for reliable operation

Ozone Production – How Ozone is Produced

Ozone keeps municipal water safe

Considering Flint water crisis, Tampa Bay Water ensures residents that local water exceeds safety standards.  Using high tech treatment systems, including ozone, provides high quality, safe drinking water.

Read Full Story HERE

TAMPA – In a Friday release, Tampa Bay Water ensured residents and businesses that local water supplies exceed all levels of drinking water safety standards. The company supplies water to nearly 2.4 million people in the area.

“If it doesn’t meet our high water quality standards, it doesn’t leave the plant,” said Christine Owen, Tampa Bay Water’s regulatory compliance senior manager.

The water crisis in Flint, Michigan, is due in part to unbalanced pH and alkalinity corroding the area’s pipes and fixtures. Tampa Bay Water has been controlling and treating water for appropriate and safe pH levels since 2002.

Here’s how your water becomes safe to drink: 

  • Color and contaminants are removed through a process called coagulation. Ferric sulfate, the coagulant, makes color and contaminants stick to it and settle out of the water.
  • Water is disinfected with ozone, the most powerful disinfectant in water treatment. It kills harmful micro-organisms.
  • Water is filtered to remove particles, disinfected again with chlorine, and pH and alkalinity are adjusted to make sure the water is stable and not corrosive.
  • Water samples are tested and monitored against more than 100 safety standards.

– per a Tampa Bay Water release

If you have other questions or concerns about water safety in light of the Flint crisis, feel free to contact Tampa Bay Water here , or call 866-INFO-H2O.

Ozone produced from UV Light for Commercial Applications

Ozone is produced commercially from an ozone generator using UV light also. Ozone is produced from UV light wavelengths below 240 nm. Ozone production peaks at UV light wavelengths of 185 nm. Using UV lights tuned specifically for a wavelength of 185 nm ozone can be produced from air.

Ozone production from UV light for commercial applications
UV Ozone Generator

 

ADVANTAGES OF UV OZONE GENERATOR

  • Simple Construction – only a UV lamp with ballast and a fan
  • Low cost – due to simple construction
  • Lower nitric oxide production

DISADVANTAGES OF UV OZONE GENERATOR

  • Low ozone output – g/hr
  • Low ozone concentration – less than 1% by weight
  • Bulbs and ballasts will need to be replaced

Ozone Production – How Ozone is Produced