Wastewater Treatment Solutions for Oil Refineries

Our high-purity oxygen systems enable wastewater facilities to treat double (or more) the organic load possible with a conventional air-based system at the same power input. With our efficient and proven oxygenation systems, mixing and oxygen transfer is decoupled. Providing enough oxygen to meet an increased organic load is as simple as turning up an oxygen supply valve to feed more oxygen to the wastewater process.

The best way to fight odors in the wastewater industry is simply by adding a little oxygen. Adding pure oxygen to your existing process can raise the level of dissolved oxygen enough to reduce or eliminate odors without further action. Even better, our systems help you manage peak demand and increase capacity while reducing VOC emissions.

Our in-situ oxygenation (I-SO™) system is a mechanical oxygenator that can dissolve as much as 82% of the high-purity oxygen into your water. When you aerate with our I-SO oxygenation system, you increase bio-treatment capacity, significantly lower VOC emissions, reduce foam formation, reduce electrical power usage and allow for greater variations in oxygen demand. This market-leading oxygen-enriched aeration technology can be easily adapted to meet your site’s short-term and long-term needs. Based on your unique challenges, we’ll help you select an approach with the potential to achieve the desired impact.

Our SOLVOX^® mobile oxygen system is another flexible way to aerate refining wastewater. It can be used to bridge seasonal and production peaks or as a backup solution during maintenance. Its modular concept allows for flexible capacity management and it can be easily stored and installed again when needed. A single unit can oxygenate and mix approximately 39,000 to 53,000 gallons of wastewater aeration basin volume.

Our high-purity oxygen aeration systems can enable refinery wastewater treatment facilities to dispose of spent caustic in the biological process. This eliminates or significantly reduces the need for complex high-temperature and pressure oxidation alternatives that are currently used today.

While most conventional aeration systems can handle organic loads that are equivalent to about 20-80 grams O₂/m³/hr, our oxygenation systems will allow facilities to effectively treat up to 400 grams O₂/m³/hr - on the same footprint.

As one of the world’s largest suppliers of carbon dioxide (CO₂), we have extensive experience in the benefits of CO₂ as a tool to effectively neutralize alkali wastewaters from refining operations. Replacing mineral acids with our SOLVOCARB^® CO2 solution for pH control is a smart choice. By no longer buying or storing potentially hazardous chemicals or mineral acids, you are making your site safer while also reducing costs. CO₂ does not require spill protection or corrosion-resistant piping, for instance. pH control with CO₂ can also help you manage peak demand and capacity increases, increase plant flexibility, and lessen your impact on the environment. In addition, CO₂ eliminates the possibility of over-treatment because the self-buffering properties of CO₂ virtually exclude over-acidification of the wastewater. This reduces or eliminates the need for treatment of the off-gases.

Ozone is a strong, reliable disinfectant ideally suited to the treatment of refining wastewater. The high oxidizing potential of ozone makes it perfect when chemical residue is unacceptable. We have been supplying disinfection systems based on ozone, recycling systems included, for many decades now.

Find out more about our disinfection systems and how they can control undesirable microbial growth in parts of your refining wastewater treatment. A Linde representative would be glad to recommend the best disinfection option for your operations.