Treatment of oily wastewater by combining ozonation and microfiltration

Processing of alumina‐coated glass‐bonded silicon carbide membranes for oily wastewater treatment

“…With changing regulations and limited availability of fresh water, treatments for water produced by oil operations and oily wastewaters have gained increasing interest . Conventional approaches for treating oily wastewaters have included de‐emulsification, gravity separation and skimming, coagulation, dissolved air flotation, and flocculation .…”

“…With changing regulations and limited availability of fresh water, treatments for water produced by oil operations and oily wastewaters have gained increasing interest. [32][33][34] Conventional approaches for treating oily wastewaters have included de-emulsification, gravity separation and skimming, coagulation, dissolved air flotation, and flocculation. [35][36][37] The small quantity of oil remaining in the water after the conventional methods must be reduced to an acceptable limit before the water can be discharged into seas or rivers.…”

Effects of pre-ozonation in case of microfiltration of oil contaminated waters using polyethersulfone membrane at various filtration conditions

“…Several reports were published in which membrane micro- [6][7][8][9][16][17][18][19][20] and/or ultrafiltration [5,8,16,[21][22][23][24] were applied for the purification of oil contaminated waters. Polysulfone- [3,5,21], polyethersulfone- [2,16,20,25], ceramic- [9,10,17,19], porous glass- [18], carbon- [7] polia-…”

Highly Efficient Purification of Finely Dispersed Oil Contaminated Waters by Coagulation/Flocculation Method and Effects on Membrane Filtration

“…Membrane separation (micro- [15,[17][18][19][20][21][22][23][24][25] and ultrafiltration [13,18,23,[26][27][28][29]) can also be efficient for the treatment of these kind of water pollutants, however membrane fouling [10,30] is a general problem (not only in case of oily contaminants), which inhibit the economic utilization in many cases. Microfilters have relatively higher fluxes compared to ultrafiltration, but the latter results in higher purification efficiency.…”

“…Since polyethersulfone is one of the most extensively used material to produce nano-, ultra-, and microfilter membranes [4,23,24,41], because of its chemical-and thermal stability, easy processing and environmental endurance [4,42], therefore in the present study polyethersulfone microfilter was used to eliminate the oily contaminants with and without the destabilization pretreatment. Permeate fluxes, resistances, fouling models and purification efficiencies were investigated in both cases.…”