Oil and Gas Industry
Seair’s diffusion technology has many applications in the oil and gas industry. From produce and fracturing water treatment to oil sands process water, ozone treatment has been shown to be effective in removing toxicity, complex hydrocarbons and chemicals. Ozonation is also very effective in storm water and sump fluid treatment. Onsite treatment of oilfield wastewater is possible using generated ozone, which greatly reduces the need to transport and dispose of wastewater. Highly efficient aeration and pH adjustment using Seair technology are also useful in the oilfield industry.
As fresh water is becoming a more valuable commodity, onsite treatment and reuse of oilfield industrial wastewater makes increasing economic and environmental sense.
Oilfield Industrial Wastewater can be treated using Seair’s diffusion technology to acheive:
- Sulfide removal;
- Hydrocarbon decomposition;
- Complex waste products oxidation (naphthenic acids, etc);
- Heavy metal oxidation;
- Biocide for bacteria (disinfection);
- Toxicity reduction;
- pH adjustment;
- Efficient aeration; and
- Separation – dissolved air floatation, induced gas floatation.
In particular, Seair products are ideal for use in the following specific applications:
Produce/Fracturing Water Treatment
Storm Water Remediation
Oil Sands Process Water Treatment (see University of Alberta and Syncrude Study)
For more information on our custom oilfield industrial wastewater treatment systems please contact us.
Seair Treated Produced Water
Oilfield Industry Applications:
Seair’s diffusion technology coupled with ozone can oxidize harmful and toxic sulfides to sulfate and sulfur. This can be used in the treatment of oilfield industrial wastewater or for scrubbing of tank head space gases. Hydrogen sulfide scrubbing of head space gases is performed via a treatment tank and ozonation of the off-gassed H2S. The system is a closed loop and requires minimal maintenance and inputs as the water in the system can continually be reused. Ozonation can also be used to eliminate sulphate reducing bacteria, thereby preventing the formation of sulphides at their source.
Ozonation is very effective in eliminating residual hydrocarbons in oilfield water. Complex and volatile hydrocarbons are readily oxidized through the use of either ozone or advanced oxidation treatment. Ozone is one of the few oxidants that will easily break down carbon-carbon bonds, effectively forming smaller and smaller compounds until complete oxidation to carbon dioxide and water is achieved.
Complex Chemical Removal
Ozone diffusion is very efficient at breaking down complex chemicals, that are otherwise very resistant to treatment, in solution. For example, chemicals such as naphthenic acids are readily oxidized by ozone as observed in independent testing of oil sands process water with Seair diffusion equipment (95% removal in 130 minutes of treatment).
(Scott et al. Ozonation of Oil Sands Process water Removes Naphthenic acids and Toxicity)
Heavy Metal Precipitation
Ozone reacts readily with certain heavy metals, increasing their oxidation state and forming insoluble oxides and hydroxides. Metals can be removed in this way from water sources or industrial wastewater through precipitation and subsequent filtering. Some metals that are particularly susceptible to ozone based removal processes are iron, manganese, lead, zinc, and chromium.
Bacterial Biocide (Disinfection)
Ozonation also has the added benefit of being an excellent disinfectant. Ozone’s very powerful disinfection properties are efficiently harnessed with Seair’s patented diffusion systems, providing effective bacterial elimination in oilfield wastewater. This cuts down on the use of toxic biocides and eliminates the need for dangerous handling and transport of biocides.
Seair’s ozonation system also greatly reduces the toxicity of oilfield wastewater. The removal of sulphides, heavy metals, complex chemicals, and residual hydrocarbons has the positive effect of also decreasing the toxicity of the water. Ozonation is often sufficient treatment to achieve oilfield wastewater toxicity regulations.
Seair’s diffusion systems also have the unique ability to dissolve carbon dioxide gas (CO2) into fluids, resulting in carbonic acid formation. This reduces highly alkaline pH to neutral levels through the use of CO2 gas, an inexpensive gas by-product of many industries. pH lowering through CO2 diffusion is a safe alternative to handling corrosive and expensive high concentration acids.
Our diffusion systems are also ideal for the diffusion of atmospheric air, or pure oxygen, into fluids. Our systems are highly effective in increasing dissolved oxygen to supersaturated levels. This converts anaerobic water to aerobic, which facilitates remediation through bacterial metabolism of contaminants.
Seair’s diffusion systems are highly effective at floatation for either dissolved air flotation (DAF) or induced gas floatation (IGF). The extremely small and stable micro bubbles produced attach to solids or liquids, floating them to the surface where they can be skimmed off.