Research of organometallic ultrafiltration membranes for the treatment of oily sewage from vessel

Abstract

The research used organometallic ultrafiltration membranes to treat wastewater containing aviation kerosene. After a long operation test, the effect of operation time on water production per unit membrane area was investigated. The research showed that the water yield did not fluctuate significantly during the 90 min of operation. The effect of differential pressure across the membrane on the performance of recovery rate, membrane flux and oil removal rate was investigated by varying the feed water pressure. The research showed that when the operating pressure was increased from 0.14 MPa to 0.2 MPa, the produced water flux increased from about 43 L/h/m2 to about 66 L/h/m2, the single-stage recovery rate increased from 20% to about 40%, and the oil removal rate decreased slightly but was still higher than 90%. The effect of changing the initial oil-bearing wastewater concentration on the oil removal effect was investigated. The research showed that the initial oil concentration was higher than 90% in the range of 30mg/L-100mg/L.