Introducing Ozone to Water Purification

InnovaMass® 240S Multivariable Vortex Mass Flow Meter


Traditionally, chlorine has been used to disinfect water for drinking. Unfortunately, chlorine produces carcinogenic by-products called trihalomethanes (THM’s) when it reacts with organic substances in surface waters. The recent adoption of the Surface Treatment Rules by the U.S. E.P.A. places strict limits on chlorine. Because ozone produces fewer disinfecting by-products, the EPA, along with the American Water Works Association, has emphasized the use of ozone as a highly desirable water treatment alternative.

Ozone has been used for more than 100 years to purify water by oxidizing minerals such as iron, manganese and hydrogen sulfide and by destroying bacteria, viruses and cysts. It is more than 3,000 times faster than chlorine and is the most powerful microbiocide commonly available for water treatment.

Man-made ozone is formed by passing dry ambient air or oxygen through a high voltage field called a corona, which is produced inside an ozone generator. The high voltage breaks apart the oxygen molecules and causes them to reform as ozone, which is up to 13 times more soluble in water than oxygen. Ozone generators require a known mass flow rate of the oxygen or air fed into the device. This measurement is required to prevent the device from becoming saturated so that the amount of ozone produced can also be measured.


As the EPA’s rules on disinfecting by-products get stricter, more water treatment facilities are opting to use ozone systems for water purification instead of chlorine. Sierra’s InnovaMass® helps water treatment plants precisely measure the flow rate of oxygen entering these ozone generators.

measuring the amount of ozone produced by the ozone generator is problematic since the ozone has a short lifetime. It cannot be stored and needs a short “residence time” in the piping and flow meter. The Sierra InnovaMass vortex meter is an in-line device that is fully flow-profile compensated, so that minimal straight-run piping is required. Ozone is also produced at low pressures, so pressure drop losses must be minimized. The Sierra Vortex meter does not appreciably obstruct the pipe so pressure drops are also minimal.

The generator requires a robust flow device that is well shielded from the Coronal discharge that produced the Ozone. Housed in an explosion-proof enclosure, the Sierra InnovaMass vortex meter is virtually immune to the heavy electromagnetic interference (EMI) an ozone generator can produce.

Here’s what makes Sierra’s InnovaMass 240S an ideal choice:

  • Provides five process variables (mass flow, volumetric flow, pressure, temperature and density) at a single measurement point
  • Built-in pressure, temperature and flow profile compensation
  • All parameters are field adjustable and include complete field diagnostics
  • pproved for FM, CSA and ATEX


RM Controls, Inc.  does not own this content.


© Copyright 2016 Sierra Instruments, Inc. All Rights Reserved.



Why Power Plants are Switching to ESLIN™ Industrial Insulation:

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  • Unmatched Life-Cycle Performance
  • Heat Losses Reduced by up to 50%
  • Rigid, Unbreakable, Reusable
  • High Compressive Resistance

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  • Temperatures to 1400°F (760°C)
  • Significant Labor Savings
  • Available in Pipe Cover & Board Form
  • Safety First; Fibers are Large Non-Respirable

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Join Our Ever Growing List of ESLIN™ Users:  (Recent Power Industry Applications):


Florida Power & Light specifies ESLIN™ for use at their Port Everglades, FL facility (Next Generation Clean Energy Center). ESLIN™ also in specifications for FP&L planned 1,600 MW CCPP in Okeechobee, FL.

Basin Electric Power Cooperative specifies ESLIN for Outage at their Deer Creek Station in Elkton, SD

Siemens Energy selects ESLIN™ for proposed Cogeneration Unit in Altamira, Mexico

Invenergy has specified ESLIN™ for their 1,300 MW CCPP (Lackawanna Energy Center) planned for Jessup, Lackawanna County, PA. Kiewit Corp. is the EPC for that large power generation facility.

Bluegrass Power Constructors (a Black & Veatch / PCL Constructors consortium) recently completed the construction on a new 600 MW CCPP for Louisville Gas & Electric Company in Cane Run, KY. ESLIN™ was specified in by Black & Veatch for all pipe cover material. This new power plant replaced an old coal-fired plant and is now in service (under-budget and ahead of schedule).

Sargent & Lundy LLC (S&L) is the Consulting Engineer for the new Portland General Electric (PGE) 440 MW Carty Generating Station (CCPP) in Boardman, Oregon. S&L specified ESLIN™ for all services 400°F (204°C) or higher. Abeinsa is the EPC. Nooter/Eriksen also specified ESLIN™ for the HRSG portion.

NUCLEAR — NuScale Power (based on US Navy ⃰ engineering recommendations) has ordered ESLIN™ as the exclusive insulation for use on their prototype Small Modular Reactor (SMR). ⃰ Note: ESLIN™ was specified for use aboard America’s newest nuclear aircraft carrier, the USS Gerald R Ford (CVN-78).

Nooter/Eriksen specified ESLIN™ for all insulation on the new Crescent Dunes Solar Energy Project (CSP) in Tonopah, Utah. ESLIN™ was specified in by Pratt & Whitney Rocketdyne (PWR) after a detailed evaluation of the material in 1050°F (565°C) molten salt service. Solar Reserve developed the project.

Other Power Generation Users: AEP, Alstom, Siemens, Tenaska, Southern, Basin Electric, Oklahoma Cogen., FP&L plus many District Energy Applications (Cities, Universities, Hospitals, etc.)

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Industry Updates:  (Insulation Applications)


Historically, Mineral Wool (MW) and Calcium Silicate (CS) Insulation have enjoyed wide usage in power generation facilities.  However, MW products at elevated temperatures have commonly experienced binder degradation which results in loss of both structure and thermal performance.  Consequently,, many users are now limiting the upper temperature use of MW.  Siemens Energy, Suncor Energy, Invenergy and Sargent & Lundy have set their maximum MW use temperature to 400°F (204°C); Nooter/Eriksen picked 600°F. Many users still specify CS because of the perception it can be walked-on. However, CS will develop fissures and cracks over time, degrading thermal performance and yielding piles of rubble whenever cladding is removed.  ESLIN™ Insulation has high compressive resistance and is unbreakable.

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Made in USA / Let’s Meet:


ESLIN™ is manufactured in Denison, Texas (about one hour North of Dallas).   We are available to conduct presentations on-site or via webinar.