Oily water treatment using ceramic memberane

Abstract EN

This research was conducted using ceramic microfiltration membrane for treatment of oily wastewater in the pilot-scale dead-end filtration system designed in the laboratory under the influence of conditions of feed flow rate 15-35 l / h, feed temperature 32-48°C, oil feed concentration 300-1200 ppm, feed solution pH 2.6-9.8.

The influence of these conditions on the permeate flux rate and oil rejection percent were investigated.

Experimental results indicated that when feed flow rate increased to 35 l / h permeate flux rates increased to 100 l / m2.h and oil rejection percent decreased to 70.1 %, and when feed temperature increased to 48 ºC permeate flux rate increased to 62 l / m2.h and oil rejection percent decreased to 56.44 %.

But when oil feed concentration increased to 1200 ppm permeate flux rate decreased to 17.2 l / m2.h and oil rejection percent increased to 99.7 %.

Also basic feed solution (pH = 9.8) gave high permeate flux rate (44.51 l / m2.h) and low oil rejection percent (84 %) in comparison with acidic feed solution (pH = 2.6) which gave low permeate flux rate (26.42 l / m2.h) and high oil rejection percent (99.46 %).

Four classical models were investigated to flux decline and the results showed that the experimental data was consistent (R2 = 0.9883) with the complete blocking filtration model.