White paper validates innovative oxygen transfer technology 

The reservoir testing site.

A new, industry-verified white paper validates the oxygen transfer efficiency of an innovative, gas infusion technology for water and wastewater treatment.

The trademarked Dissolved Gas Infusion (DGI) technology has been developed by Fuel Tech Inc., a US engineering company, to provide a highly efficient alternative to existing aeration technologies for use in utility and industrial applications. Validation testing shows DGI delivers greater than 99% transfer of oxygen when applied to a treated body of water.

Two patent-pending technologies are used in combination to ensure optimal and precise gas delivery to target water and wastewater processes. These include a next generation, pressurized saturator for gas transfer of the oxygen solution to a slipstream of water; and an innovative nozzle delivery system to distribute oxygenated water that virtually eliminates gas loss from a targeted body of water.

The trademarked DGI technology was tested using validation methodologies published by the American Society of Civil Engineers (ASCE) and its Environmental & Waters Research Institute (EWRI). The results of the tests, which have been peer-reviewed and endorsed by industry experts, have determined that:

  • 99+% of the oxygen supplied to the DGI system was delivered to a treatment reservoir as dissolved oxygen with no loss to the atmosphere, within described measurements of uncertainties.
  • The DGI channel injector effectively transferred the oxygen-infused water stream to reservoir water while located only twenty-four inches below the water surface.
  • There was no measurable loss of oxygen to the environment, no visible bubbles, and no delay in the availability of the supplied oxygen to react in the aqueous phase.

DGI combines market-leading oxygen transfer efficiency with precision accuracy to deliver an energy efficient and cost-effective water and wastewater treatment system. This cutting-edge technology achieves its 99+% gas transfer rate by pre-dissolving high purity gas in a separate pressurized slipstream.

The oxygen infused slipstream can reach up to 900mg/l oxygen concentration, which is then added to the main body of water and diluted to meet precise customer specifications. To guarantee high oxygen saturation rates, DGI is fitted with specially designed high-velocity channel injectors that help retain gas and optimize distribution.

DGI can work as a rapid response option or augment underperforming legacy technologies in a wide range of water and wastewater treatment applications across different sectors, including municipal utilities, agriculture, environment, pulp & paper, food & beverage, upstream oil & gas, and landfill management.

The technology can help address a range of issues, including regulatory compliance, water preservation, biological treatment, odor reduction, chemical replacement in wastewater treatment, and improving overall water quality for humans and the environment.

CLick to enlarge:
DGI process

Fuel Tech president and chief executive officer Vincent Arnone said, “This validation study is a foundational component of the ongoing DGI business development strategy. Fuel Tech is on track to achieve the goal of product commercialization in 2023 and has also begun recruitment for an experienced water and wastewater treatment executive to take DGI to the next stage.”

The DGI technology, and the end-to-end service provided by Illinois-based Fuel Tech Inc., uses exceptional computational fluid dynamics modeling capabilities, which are enhanced by internally developed, high-end, visualization software.

The full white paper, titled Validation Testing of the Fuel Tech, Inc. Dissolved Gas Infusion Technology for Oxygen Transfer Efficiency in Clean Water, and accompanying DGI brochure is available on the Fuel Tech DGI product page at www.dissolvedgasinfusion.com.