华电技术 ›› 2012, Vol. 34 ›› Issue (11): 63-66.

• 节能与环保 • 上一篇    下一篇

废水蒸发浓缩工艺在脱硫废水处理中的应用

吴志勇   

  1. 中国华电工程(集团)有限公司,北京100035
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2012-11-25 发布日期:2012-11-25

Application of wastewater evaporation concentration technology in desulphurization wastewater treatment

WU Zhiyong   

  1. China Huadian Engineering Corporation Limited, Beijing 100035, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2012-11-25 Published:2012-11-25

摘要: 反渗透浓缩法和晶种法是目前常用的脱硫废水后续深度处理方法,但处理效果都不太理想。采用预处理软化+机械蒸汽再压缩循环蒸发+三效混流强制循环蒸发结晶+离心干燥包装工艺,解决了常用处理方法的不足。废水通过软化、蒸发、结晶、干燥、包装等工艺处理,最终以蒸汽的形式排出,或以污泥等形式封闭、填埋处理,可实现废水零排放,具有良好的社会和经济效益。

关键词: 工业废水, 脱硫, 反渗透浓缩法, 蒸发浓缩, 物料循环利用, 零排放

Abstract: The reverse osmosis concentration method and the crystal seed process are desulphurization wastewater subsequent depth treatment methods commonly used at present, but the treatment results of the methods are not so ideal. A composite method, which include pretreatment softening + mechanical steam recompression cycle evaporation + trieffects mixed flow forced circulation evaporation crystallization + centrifugal drying package technology, was adopted; and the disadvantages of the commonly used methods were improved. In this composite method, the wastewater will be treated by softening, evaporation, crystallization, drying and packaging, and will be emitted as steam or will be closed and buried as sewage sludge at last. This method with zero discharge of the liquid wastewater has favorable social and economical benefit.

Key words: industrial wastewater, desulphurization, reverse osmosis concentrating method, evaporation concentrating, materials recycle utilization, zero emission