CHEN Li-na,YOULiang-zhou,HANQian-qian,et al.Design and Operation Effect of a Wastewater Zero Discharge Reconstruction Project in Coal-fired Power Plant[J].China Water & Wastewater,2023,39(20):132-137.
Design and Operation Effect of a Wastewater Zero Discharge Reconstruction Project in Coal-fired Power Plant
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第20期
Page:
132-137
Column:
Date of publication:
2023-10-17
- Abstract:
- In order to realize zero discharge of wastewater in a coal-fired power plant, on the basis of deep optimization of wastewater, the circulating sewage and desulfurization water which can not be reused is treated. The process of “circulating sewage pre-concentration, deep concentration and bypass flue atomization evaporation” is adopted as the technological route of transformation. The circulating sewage is treated with desulfurization wastewater after pretreatment and multi-stage concentration, DTRO process is used as the advanced treatment process, and salt-water separation is finally realized through the bypass flue evaporation system. The whole system operates stably, with high recovery rate and desalting rate. The crystallization salt is comprehensively utilized along with fly ash without affecting its proportion in portland cement, which solves the problem of large external discharge of circulating sewage in coal-fired power plants. At present, the overall system operation cost is as high as 15.681 million yuan/a, among which the chemical consumption cost of membrane treatment system accounts for nearly 75%.
Last Update:
2023-10-17