Oilfield water treatment
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What are the common processes used for the pretreatment of oilfield wastewater? The main goal is to remove oil and suspended solids; soluble salts are not required.
Oilfield water injection contains oil; previously, oil removal tanks were used, and now air flotation is employed when the amount of oil is small – it’s not clear what the effectiveness of this approach is
We haven’t dealt with oil field wastewater before, but if necessary, we can conduct experiments and provide services!
I also want to find out more; I work in evaporation crystallization and membrane-based water treatment
For large oil droplets, oil separation is achieved using corrugated plates along with air flotation; this is the common approach, and it’s sufficient to follow the existing standards for design. Someone posted about this on a forum some time ago – you can look there. If the oil droplets are small, add some demulsifier or use a polymeric oil-water separation membrane.
We use chemicals to remove oil and suspended solids, and the results are very good; it is possible to meet **the standard requirements.
This post was last edited by zhaolijun on 2016-3-24 at 14:54. Membrane filtration + MVR evaporation + crystallization is the cheapest option, but it still depends on your water sample; get in touch
The general treatment process for raw water at offshore platforms: inclined plate oil removal tank ----> multi-media filter ----> filtration separator. If chemical agents such as demulsifiers are required for the process calculations, these can be added during the treatment process; in most cases, the discharge standards can be met