Experimental Study on the Reduction Treatment of Desulfurization Wastewater in Power Plants by Membrane

doi:10.11930/j.issn.1004-9649.2016.02.148.05

Abstract

Abstract: To recycle the desulfurization wastewater and achieve the goal of zero wastewater discharge in power plants, the desulfurization wastewater after pretreatment is treated by adopting microfiltration(MF) and reverse osmosis(RO). The stability of MF system and the chemical cleaning method of MF membrane under different solid content conditions are explored as well as the stability and desalination rate of RO system under different recovery rate conditions. The study results show that the MF system can operate stably and the turbidity of its water production is less than 0.2NTU with the silt density index(SDI) less than 4.0. The RO system also operates stably without obvious scaling observed under various recovery rate conditions. Its desalination rate is more than 98%, and the desalination rate of single RO membrane is more than 99%. The salinity of its water production is less than 510 mg/L, which means that the water production can be used as the make-up water for the recycled water as well as the replenishment for other systems in the power plant such as the desulfurization processing water.

Key words: desulfurization wastewater, microfiltration, reverse osmosis, chemical cleaning

CLC Number:

TM621.8
X77

LIAN Kunzhou, CHEN Jingshuo, LIU Zhaoxia, MAO Jin, WANG Jing, ZHANG Jiangtao. Experimental Study on the Reduction Treatment of Desulfurization Wastewater in Power Plants by Membrane[J]. Electric Power, 2016, 49(2): 148-152.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2016.02.148.05

https://www.electricpower.com.cn/EN/Y2016/V49/I2/148

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