NDLI: Reverse Osmosis Membrane Combined with Ultrasonic Cleaning for Flue Gas Desulfurization Wastewater Treatment

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Reverse Osmosis Membrane Combined with Ultrasonic Cleaning for Flue Gas Desulfurization Wastewater Treatment

Content Provider	MDPI
Author	Chen, Xingyu Li, Tianxin Dou, Xiaomin Meng, Linglong Xu, Shui Yang
Copyright Year	2022
Description	Flue gas desulfurization (FGD) wastewater treatment is currently of interest, as stringent standards have been released in order to limit the pollution emissions from the energy industry, and concerns about water scarcity are also increasing. Reverse osmosis (RO) membrane is a promising alternative for highly efficient FGD wastewater treatment. However, membrane fouling strongly limits its application. This study developed a suitable treatment system by combining RO membrane with ultrasonic cleaning. The introduction of low-frequency and high-intensity ultrasonic cleaning improved the cleaning efficiency of membrane fouling, as the permeate flux recovered 49% of the reduced value within 10 min of cleaning. The lifespan of the membrane was also extended, as the time of permeate flux declined to the same level, increasing from 2 h to 4 h after ultrasonic cleaning. The effluent of the system could meet the standard of desulfurization wastewater treatment. The treatment system is feasible for FGD wastewater treatment at a laboratory scale. These findings proved that the combination of RO membrane and ultrasonic cleaning could be applied to FGD wastewater treatment. The study provided an efficient, cost-saving, and convenient way to develop the FGD wastewater treatment system.
Starting Page	875
e-ISSN	20734441
DOI	10.3390/w14060875
Journal	Water
Issue Number	6
Volume Number	14
Language	English
Publisher	MDPI
Publisher Date	2022-03-11
Access Restriction	Open
Subject Keyword	Water Environmental Engineering Environmental Sciences Reverse Osmosis Membrane Ultrasonic Cleaning Membrane Fouling Flue Gas Desulfurization Wastewater Wastewater Treatment
Content Type	Text
Resource Type	Article

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