ZHOU Ming-fei,LIAN Kun-zhou,WANG Jing,et al.Efficiency Analysis of Desulfurization Wastewater Treated by Electrodialysis Technology[J].China Water & Wastewater,2020,36(21 21):80-86.
Efficiency Analysis of Desulfurization Wastewater Treated by Electrodialysis Technology
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第36卷
Number:
21 21
Page:
80-86
Column:
Date of publication:
2020-11-01
- Abstract:
- Desulfurization wastewater has the characteristics of complex water quality and high salinity, which is the difficulty of water saving and emission reduction in thermal power enterprises. According to the characteristics of desulfurization wastewater, the treatment effect of electrodialysis (ED) process on desulfurization wastewater was explored. When circulating flow and current density were 10 m3/h and 160 A/m2, ED could concentrate desulfurization wastewater with total dissolved solids (TDS) content of about 50 g/L to about 200 g/L, and the minimum desalting energy consumption was 8.78 kW·h/m3. The inverted pole could effectively remove the deposited scale layer on the membrane surface and reduce ED desalting energy consumption. Its combination with RO could achieve two-step desalting of desulfurization wastewater. The desalting rate of RO system was higher than 98% and TDS in effluent was 0.4 g/L under the condition of 50% recovery rate, which could be used as supplement water of the circulating water, desulfurization process water and other supplement water of the power plant.
Last Update:
2020-11-01