Environment

Meeting environmental regulations while reducing environmental impact

Remaining productive while minimizing environmental impact during operations is today’s challenge. We help you reduce emissions, improve wastewater treatment operations for maximum reuse of materials and comply with increasingly strict regulations. Air Liquide is a leading manufacturer of industrial and specialty gases and related gas handling equipment. We specialise in environmental emissions monitoring and calibration for water treatment, stack testing and trash-to-steam applications.

At Air Liquide, we master applications using gas technology to treat water, recycle metal, recover solvents, analyze air quality and valorize waste. Focused on performance, we go beyond gas and propose a full expertise for client needs. We work with our customers in the way that suits them best.

Environment Value Chain Steps

WATER

Air Liquide supplies a range of products, equipment and services for water and wastewater treatment. We supply oxygen and carbon dioxide for common wastewater operational needs such as biochemical oxygen demand (BOD) and pH reduction as well as volatile organic compound (VOC) and odor control. Air Liquide’s innovative and efficient solutions help our customers use water resources responsibly while respecting the environment with regards to wastewater effluent. Air Liquide applies its many years of experience in the water treatment industry to design systems that meet the diverse needs of our customers, all while putting safety and the environment first. We innovate to develop long-term solutions to safely maximize efficiency and robustness while minimizing costs and complexity.

Oxygenation of wastewater

Using oxygen to increase the dissolved oxygen content of wastewater results in better system health and operability. If the current system is unable to handle increased loading or more stringent discharge requirements, oxygen can be a low-cost solution in lieu of a major capital investment. Dissolved oxygen can be impacted by our wastewater treatment solutions. The removal of excess gases from air injection can be an easy way to decrease VOC emissions. Our oxygen injection systems can also reduce the amount of BOD and COD in water treatment plants and meet even the strictest water permit limits.

Gases

Equipment

We offer equipment to meet specific oxygen consumption requirements, including TURBOXALTM and VENTOXALTM as well as spargers and other devices (bicone).

Services

Air Liquide’s water treatment specialists will evaluate your specific site and design a solution that uniquely meets your needs.

Ozone

Ozone is used in several water and wastewater treatment applications, including disinfection, color removal, toxicity reduction and other.

Gases

pH control

Using carbon dioxide to control the pH of a site's wastewater offers measurable safety and cost advantages over treatment systems that employ toxic and corrosive mineral acids such as sulfuric acid. Carbon dioxide is a safer alternative that minimizes environmental exposure and the risk of catastrophic accidental injuries. This low-cost treatment option substantially reduces the ongoing process, infrastructure, maintenance and compliance costs. In addition, our carbon dioxide pH control solution reduces the high cost required to deliver, store and use hazardous mineral acids – including the ongoing degradation costs of equipment exposed to the corrosive effects of acid.

Gases

Equipment

We offer equipment to meet specific carbon dioxide requirements, including a variety of injection methods and control techniques.

Services

Air Liquide’s water treatment specialists will evaluate your specific site and design a solution that uniquely meets your needs.

Recarbonation

After the lime softening process, carbon dioxide is used to stabilize the water by lowering pH levels and preciptating out any additional calcium and lime carbonates.

Gases

AIR

Air Liquide supplies the calibration gases, zero gases and related gas handling equipment you need for environmental compliance.

Emissions monitoring

Air Liquide makes use of CEM DAILY STANDARDS™ for continuous emissions monitoring calibration gases, as well as our ALPHAGAZ™ brand pure gases engineered to help you accurately test and measure emissions monitoring analyzers. We also offer GMACS (Gas Manufacturer's Alternative Certified Standards) hydrogen chloride gas mixtures, an EPA-approved class of calibration standards specifically for monitoring HCl emissions at CEMS installations. In addition, our extensive inventory of gas handling and distribution equipment allows you to safely store, handle and deliver these gases to your applications.

Gases

Brands

Oxygen enrichment of lime and cement kilns

The enrichment of primary combustion air in lime and cement kilns allows for increased throughput and enhanced product quality. The addition of oxygen increases the front-end kiln temperatures and as a result enhances the temperature profiles. The use of oxygen can result in the reduction of total reduced sulfur (TRS) and/or carbon monoxide (CO).

Gases

Equipment

In addition to our oxygen offer, Air Liquide manufactures and supplies industrial gas equipment such as the Oxynator gas mixer and oxygen injection lances.

Regulatory compliance, quality and process control

Air Liquide supplies industrial gases, custom gas calibration standards and carrier gases including hydrogen, helium and nitrogen.

Gases

Brands

SOLID WASTE

Air Liquide provides solutions to recycle and valorize solid waste.

Waste management / trash-to-steam

Air Liquide offers ALPHAGAZ™ engineered to accurately calibrate your emissions monitoring analyzers and help you comply with regulations governing the burning of trash and bio-waste. We also offer argon for mercury monitoring systems and welding gases for ongoing maintenance needs. ​Our extensive inventory of gas handling and distribution equipment allows you to safely store, handle and deliver these gases to your application.

Gases

Brands

Waste to renewable energy

We are developing innovative technologies that use waste to generate renewable energy and cleaner fuels in a sustainable way. Agriculture and household waste naturally generate raw biogas, a renewable energy source. Air Liquide technologies can capture raw biogas released into the atmosphere and convert it into energy that can be substituted directly for fossil fuel gas and then used to produce heat, electricity and clean fuels. Carbon dioxide, oxygen, hydrogen dioxide and hydrogen sulfide are removed from raw biogas (mainly comprised of methane and carbon dioxide) by selective permeation through a hollow fiber membrane. The driving force is the partial pressure difference across the membrane for each gas component.

Why Choose Us?

  • Compliance experts
    Easily meeting EPA environmental compliance regulations.

  • Reliability
    You can depend on our unique production technologies and ISO-accredited facilities for all product reliability.

  • Industry experts
    Our advice on enhancing gas-use efficiency for treatment of water, air and solid waste is based on years of proven industry knowledge and experience.

  • R&D support network
    Our global network of application experts, engineering, research and development teams provide optimum solutions for any given need.