The production of industrial gases is a clean industry, since it is based on a non-polluting technology.

With its advanced technologies and such basic products as oxygen, carbon dioxide, nitrogen, water and ozone, Air Liquide has solutions for everyone concerned with protecting the environment.

Because the environment is of major importance, Air Liquide offers concrete solutions for all environmental problems. Our regional teams all over the world are ready to advise you and develop the environmental solutions you need. From initial diagnosis to the design and implementation of a suitable treatment system, our air gas technologies are available to help you protect and preserve the environment.

Gases To Purify Water

• Oxygen improves the biological purification of water. Its use increases the capacity of sewage treatment plants.

  VENTOXAL equipment dissolves oxygen in wastewater, and such specially designed services as computer modeling, maintenance and remote-management optimize oxygen consumption.

• The water's pH is controlled by injecting carbon dioxide, which is harmless for the environment and easier to handle than other acids.
• Drinking water may be disinfected by treating it with ozone instead of chlorine.
• DIAGOX chemical oxidation equipment (using oxygen, ozone or peroxide) can remove chemical pollution, condition cooling waters and neutralize odors in sewer systems and treatment plants.

Gases To Treat Waste

• Waste incineration is improved by using oxygen which can reduce smoke volume by a factor of up to seven. Incineration may even vitrify waste residues which are then absolutely inert.
• The use of liquid nitrogen to "cryocrush" some types of wastes (such as automobile tires) at very low temperature allows the component products to be separated and recycled.
• Contaminated soils may be treated by chemical oxidation using oxygen, ozone or hydrogen peroxide.

Gases To Purify the Air

• The optimization of combustion reduces the amount of polluting emissions.

  Optimization is often achieved by injecting a gas and by modeling flow patterns and temperatures.

• Volatile organic substances are removed from the air by cryocondensation using liquid nitrogen, or by adsorption, which require special systems designed and developed by our engineers.
• Air Liquide can analyze atmosphere and smoke gases and provide standard calibration gases to enable you to continuously and reliably monitor your stack and flue emissions.