H2O offers a range of solutions for the specific challenges of water and wastewater treatment in the downstream oil and gas industry.

Reusing and recycling water from effluent treatment in downstream oil and gas operations helps with regulatory compliance, protects the environment while minimizing the need for freshwater for makeup demand. H2O offers a variety of water treatment technologies and technical expertise to develop processes to maximize reuse of water, implement ZLD strategies, and efficiently handle wet waste & sludge.

Effluent Treatment

Downstream processes generate wastewater that must be treated prior to discharge or reuse. Pollutants must be removed to ensure full compliance and appropriate quality. These pollutants are mostly oils and hydrocarbons, hydrogen sulfide, ammonia, phenols, COD, BOD, mercury, selenium, cyanides and chlorides.

H2O has a range of integrated components, including biological reactors, electrocoagulation, silicon carbide ultrafiltration systems, as well as reverse osmosisand the Eutectic Freeze brine crystallizer, that ensure all water discharged to the environment is in line with regulatory standards and environmental compliance.

Groundwater Remediation

Treatment of hydrocarbon-contaminated groundwater can be a major challenge and presents significant environmental risk. The treatment of dissolved and dispersed hydrocarbons from ground water is best achieved using H2O’s proprietary Hydrothermal Oxidation system.

Raw Water Treatment

A secure, safe and reliable water supply is critical to the safe and efficient operation of oil & gas refineries. H2O integrated solutions are ideal for seawater desalination and raw water pretreatment. H2O can offer a complete integrated system or specific components of a solution:

  • Silicon carbide ultrafiltration systems offer an outstanding pre-RO filtration solution. The performance of a RO system depends on the quality of the pre-filtration. The more efficient removal of suspended solids results in reduced fouling of the RO membranes and longer operating intervals of the RO system before the need of chemical cleaning. The reduced number of chemical cleaning cycles means prolonged lifetime for the RO membranes and reduced operating costs.
  • Reverse osmosis. H2O can supply high efficiency reverse osmosis systems to provide a reliable water quality for use in the facility. The RO membranes however produce a waste stream with a high salt content that can be challenging and expensive to dispose.
  • H2O’s Eutectic Freeze brine crystallizer can efficiently process the high salt waste water towards achieving zero liquid discharge, while minimizing disposal costs. The crystallizer can retrieve salt and water in pure form from the saline waste stream, at a relatively low energy demand compared to conventional evaporation based separation processes. The recovered water from the process pushes the overall efficiency of H2O’s Raw Water Treatment solution to over 95% recovery.