Effect of super-clean emission retrofitting on water balance system of coal-fired power plants with zero wastewater discharge

LI Yajuan; WANG Zhengjiang; YU Yaohong; JIANG Xiaoyan; YANG Yong; ZHAI Jiaming

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Effect of super-clean emission retrofitting on water balance system of coal-fired power plants with zero wastewater discharge

更新时间：2025-09-28

- Effect of super-clean emission retrofitting on water balance system of coal-fired power plants with zero wastewater discharge
- Thermal Power Generation Vol. 44, Issue 12, Pages: 129-132(2015)
- 作者机构：
  
  西安热工研究院有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC： X773
- Published：2015
- 稿件说明：
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LI Yajuan, WANG Zhengjiang, YU Yaohong, et al. Effect of super-clean emission retrofitting on water balance system of coal-fired power plants with zero wastewater discharge[J]. Thermal power generation, 2015, 44(12): 129-132.
DOI：

LI Yajuan, WANG Zhengjiang, YU Yaohong, et al. Effect of super-clean emission retrofitting on water balance system of coal-fired power plants with zero wastewater discharge[J]. Thermal power generation, 2015, 44(12): 129-132. DOI：

摘要

对某电厂4×600 MW燃煤机组烟气超净排放改造后的废水零排放水量平衡体系进行监测

结果显示

烟气超净排放改造破坏了电厂原有的废水零排放水量平衡体系:脱硫系统用水量降低了35%~40%;脱硝和除尘用水量变化较小。对此

对于空冷和直流冷却机组可通过减少脱硫系统工业水补水量实现脱硫用水水量平衡;对于湿冷机组可通过对富余废水进行脱盐处理回用或者采取循环水高浓缩倍率运行方式

建立新的废水零排放水量平衡体系。

Abstract

Taking four 600 MW coal-fired units as the examples

the effect of boiler super-clean emission transformation on water balance system with zero wastewater discharge was analyzed.The actual monitoring results show that

the boiler super-clean emission broke the original water balance system of the unit with zero wastewater discharge

which will cause the total water consumption of desulfurization system reduce by 35%to 40%

and that of the denitration and dust removal change little.Thus

for air cooling and once-through cooling units

the gas desulfurization system can achieve new water balance by reducing the feed-water of industrial water.For the water-cooling power units

the new wastewater zero discharge system can be established by setting up wastewater desalination recycling treatment system or improving concentration ratio of circulating water.

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