Treatment of oil contaminated water

Details Treatment of oil contaminated water Treatment of oil contaminated water

B - Operations, Transporting

01

D

182/2

B01D 15/08 (2006.01) B01D 17/02 (2006.01) B01J 20/34 (2006.01)

Patent

CA 1103170

TREATMENT OF OIL CONTAMINATED WATER Abstract of the Disclosure A process for recovering oil from a large volume of water contaminated with said oil is disclosed. The process comprises the steps of passing the oil-contaminated water through a column containing a polymeric adsorbent which is capable of preferentially adsorbing the oil, passing substan- tially oil-free water from said column, regenerating the polymeric adsorbent by eluting the adsorbed oil with an aqueous solution of a non-ionic surfactant at a pH of from about 9 to about 13 said surfactant conforming to the formula RNH(CH2CH2O)nH wherein R is an alkyl group of from 10 to 24 carbon atoms, and n is from 1 to 25, adjusting the pH of the oil-containing eluent to from about 2 to about 6 thereby creating a two phase liquid of oil and acidified surfactant solution, removing the oil from said two-phase liquid and readjusting the pH of the acidified surfactant to from about 9 to about 13.

323572

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