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This work is concerned with the efficiency of two different waste polymeric   materials as the filter media in a laboratory-scale bed coalescer in the   horizontal fluid flow mode, operating in a steady-state regime. The applied   materials are: waste polyethylene terephthalate from textile industry, BA1   and waste polypropylene from carpet industry, PP. Using these compressible   fiber polymeric materials, high bed porosity (up to 98%) could be obtained.   The investigation was carried out over a wide range of working conditions.   Bed permeability was varied in the range from 0.18•10-9 to 5.389•10-9 m2.   Operating fluid velocity was varied from 19 to 80 m/h, until the critical   velocity was reached. Different oily wastewaters were used in the   experiments. Oily wastewater is defined as the oil-inwater emulsion model   prepared using mineral oils of different physico-chemical characteristics:   crude oil (A) from Vojvodina region, two vacuum distillation fractions (A1,   A4), and blended petroleum product with a high paraffinic content (P1). Both   applied polymeric materials, BA1 and PP, showed high separation efficiency   for treatment of all investigated oily wastewater. However, the BA1 material   showed higher efficiency in a wider range of bed permeability and   physico-chemical characteristics of oil. [Projekat Ministarstva nauke   Republike Srbije, br. 172022

Separation efficiency of two waste polymer fibers for oily water treatment