Most contain some sort of treatment mechanisms associated with sedimentation, adsorption, filtration or gravitational separation of oil and water.
(Most; contain; some sort of treatment mechanisms) (treatment mechanisms; associated; with sedimentation, adsorption, filtration or gravitational separation of oil and water)
Most treatment mechanisms
contain associated
some sort of treatment mechanisms
with sedimentation, adsorption, filtration or gravitational separation of oil and water