Treatment of oil field wastewater by aeration and air flotation methods
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What are the differences between aeration and air flotation methods for treating oil field wastewater to remove suspended solids and oil? What are the intake volumes for each?
Aeration generally cannot remove suspended solids, but in a biological treatment tank, aeration can be used to remove some oils through aerobic processes. The air flotation method is a common technique used to remove suspended solids and oils. The design of the air supply is related to factors such as the water flow rate and the concentration of substances to be removed. There is a dedicated book titled \"Research and Application of Air Flotation Water Purification Technology\" that provides detailed information on this topic; it’s worth reading as it can be very useful.
Aeration is used to increase the oxygen content in wastewater; it is employed in conventional biological wastewater treatment processes but cannot remove suspended solids or oil. Air flotation uses bubbles of compressed air to bring substances with a density lower than that of water to the surface, thereby allowing for the removal of suspended solids. This method is generally used for oil removal
Air flotation is divided into vortex air flotation and dissolved air flotation. Function: Removes oil and impurities from water under the action of flocculants; removes ammonia nitrogen and COD from water through aeration and the action of activated sludge
Do aeration and air flotation methods actually remove different pollutants from oilfield wastewater?