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HYDRO₃CIDE—Automated Oxidation System


HYDRO₃CIDE is a fully automated ozone oxidation system that was developed in 2017 and patented in 2021 by Hydrozonix. Ozone is generated onsite, utilizing the surrounding air as its raw material. Ozone is used to treat produced and flowback water in gathering systems, centralized recycling facilities, and storage tanks and pits. Instead of using liquid chemical biocides, the HYDRO₃CIDEsystem produces ozone gas, which kills bacteria without leaving harmful residual chemicals in the water, like chlorinated hydrocarbons which are byproducts from the use of chlorinated oxidizers like sodium hypochlorite or chlorine dioxide. Ozone is used to accomplish a wide range of tasks, such as:

  • Control bacteria in produced and flowback water

  • Eliminate the need for liquid biocides

  • Reduce friction via gas microbubbles

  • Oxidize iron and hydrogen sulfide

  • Improve the performance of oil/water separators by using the dissolved gases

  • Eliminate incompatibility with frac fluid formulations

  • Degrade complex organics like benzene

  • Eliminate liquid chemical spills

  • Reduce carbon footprint by eliminating truck trips of delivered chemicals

Hydro3cide Process

The HYDRO₃CIDEtrailer utilizes a basic air delivery system to deliver and compress the surrounding air, then separates oxygen from the compressed air while rejecting nitrogen and carbon dioxide and converting oxygen to a gas mixture of ozone and oxygen. The rejected gases can be recovered and reinjected to increase friction reduction from micro and nanobubble injection. The ozone and oxygen mixture is then injected into the produced water by utilizing a specially designed manifold developed by Hydrozonix. This manifold is designed to handle flow rates as high as 120 barrels per minute.

For produced water, the HYDRO₃CIDE system is placed upstream or downstream of the gun barrel oil/water separator. The upstream placement prevents the growth of hydrogen sulfide and bacteria in the oil/water separators so that treated water can be injected into a saltwater disposal well or sent to a retention pond prior to recycling as a frac fluid. In a downstream placement, the HYDRO₃CIDEsystem can pretreat produced water for bacteria, iron, and sulfides prior to going into a storage system. Depending on your goals or preferences, the system can be placed in a variety of locations.

Built for Serious Volumes

The HYDRO₃CIDEtrailer comes in different sizes to accommodate almost any produced water in volumes as little as 5,000 barrels of water per day to over 100,000 barrels of water per day. The HYDRO₃CIDEsystems can be purchased or rented under a variety of rental arrangements, from daily and monthly rates to cents per bbl. contracts.

Powerful Chemistry

Ozone is a stronger oxidizer than many commonly used oxidizers like hydrogen peroxide, sodium hypochlorite, and chlorine dioxide, but it also degrades much quicker, which prevents it from reacting with friction reducers when recycling produced water. Because ozone is generated with oxygen gas and degrades into oxygen, ozone comes with its own residual oxidant in the form of oxygen. Oxygen on its own is a good natural oxidant with a higher electrochemical potential than sodium hypochlorite.

Automated Solution

The HYDRO₃CIDEsystem is fully automated and can be controlled and monitored remotely via the Hydrozonix-developed hydrOS platform. Through hydrOS the HYDRO₃CIDEsystem continuously measures water quality and automatically changes the ozone dose as water quality changes. Most of the system's operating pressures, temperatures, and flow rates are measured and monitored continuously. These parameters as well as the water quality parameters can be monitored remotely and continuously from the hydrOS dashboard.


HYDRO₃CIDE unit on location.


The HYDRO₃CIDE unit treats water before it enters the gun barrel oil/water separator.

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