Abstract
Compared with the traditional treatment technologies, inorganic membrane technology is gradually becoming the mainstream of the treatment of oily and salty wastewater, but membrane fouling has become the bottleneck restricting the development of membrane technology. In order to solve this problem, the mechanism of membrane fouling and the control strategies of membrane fouling are introduced in this paper. The atomic layer deposition technology and the preparation of TiO2 nanowires (NWs) film by impregnation method were mainly introduced, aiming to provide a more reliable industrial research status in the field of membrane fouling control.
Highlights
In recent years, with the enhancement of people's awareness of environmental sanitation and the increase of the demand for clean water, oil and water separation has attracted more and more attention[1]
Oilly wastewater is produced when it is leakaged into open water during the exploration of crude oil and transportation of petroleum products, which makes the treatment of oily wastewater an important topic in the field of water treatment[2,3,4]
It is imperative to study the mechanism of membrane fouling[1] and develop new membrane fouling control strategies[8]
Summary
With the enhancement of people's awareness of environmental sanitation and the increase of the demand for clean water, oil and water separation has attracted more and more attention[1]. We always select these methods to treat the oily wastewater, such as gravity, centrifuge, electrostatic precipitation, cyclone separator, flotation, demulsification, heat treatment, adsorption, membrane separation and so on. Among these techniques, membrane separation becomes the wonderful choice with its unique advantages. Membrane separation technology can remove oil droplets in oil-water emulsion more effectively[5]. It has many advantages, such as high selectivity, low energy consumption, simple operation, good reliability, low maintenance cost and small floor space, etc[3]. It is imperative to study the mechanism of membrane fouling[1] and develop new membrane fouling control strategies[8]
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