Discussions on zero-discharge technology of desulfurization wastewater for ultra supercritical units

WU Youfu; LIU Jie; HAI Yuyan; LI Xiaoduan; ZHONG Zhencheng; XIONG Rihua; HUO Weidong; HAN Baojun; LI Yonglong

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Discussions on zero-discharge technology of desulfurization wastewater for ultra supercritical units

Thermal Power Generation Issue 4, (2017)

更新时间：2025-09-28

- Discussions on zero-discharge technology of desulfurization wastewater for ultra supercritical units
- 作者机构：
  
  1. 神华（福建）能源有限责任公司,福建,福州,350004
  2. 北京低碳清洁能源研究所,北京,102211
  3. 神华集团煤炭开采水资源保护与利用国家重点实验室,北京,100011
  4. 神华福能发电有限责任公司,福建,泉州,362700
- 作者简介：
- 基金信息：
- DOI：
  CLC： X703.1
- Published Online：26 April 2017，
  
  Published：2017
- 稿件说明：
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WU Youfu, LIU Jie, HAI Yuyan, et al. Discussions on zero-discharge technology of desulfurization wastewater for ultra supercritical units[J]. Thermal Power Generation, 2017, (4).
DOI：

WU Youfu, LIU Jie, HAI Yuyan, et al. Discussions on zero-discharge technology of desulfurization wastewater for ultra supercritical units[J]. Thermal Power Generation, 2017, (4). DOI：

摘要

通过分析国内已经工业应用的预处理―传统蒸发结晶和预处理―膜浓缩―传统蒸发结晶2种脱硫废水零排放处理工艺方案，结合某燃煤电厂的实际水质和水量情况，对该电厂使用这2种处理工艺方案进行了经济性及工艺优缺点分析，为该电厂脱硫废水零排放探究合适的技术路线。结果表明，2种工业应用的工艺路线均存在投资、运行成本高，结晶得到混盐等问题。建议脱硫废水零排放技术首先应预处理除去悬浮物和钙镁离子，然后通过纳滤―冷冻结晶分盐系统分离废水中的氯化钠和硫酸钠，再利用电渗析―反渗透耦合技术对氯化钠溶液进行深度浓缩，最后通过结晶和干燥系统对结晶盐进行回收利用。

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