火电厂脱硫废水预处理工艺优化及管式微滤膜实验研究

doi:10.11930/j.issn.1004-9649.2016.02.153.06

中国电力 ›› 2016, Vol. 49 ›› Issue (2): 153-158.DOI: 10.11930/j.issn.1004-9649.2016.02.153.06

火电厂脱硫废水预处理工艺优化及管式微滤膜实验研究

刘亚鹏¹，王金磊²，陈景硕³，毛进¹，王璟¹

1.西安热工研究院有限公司，陕西西安 710032;
2.西安科技大学材料科学与工程学院，陕西西安 710054;
3. 华能国际电力股份有限公司，北京 100031

收稿日期:2015-03-23 出版日期:2016-02-18 发布日期:2016-03-21
作者简介:刘亚鹏（1986-），男，河北石家庄人，硕士，从事电站水处理技术研究。E-mail: liuyapeng@tpri.com.cn
基金资助:
华能国际电力股份有限公司科学技术项目（HNKJ14-G27）

Optimization of FGD Wastewater Pretreatment Technique for Thermal Power Plant and Test Studies on Tubular Crossflow Microfiltration Process

LIU Yapeng¹, WANG Jinlei², CHEN Jingshuo³, MAO Jin¹, WANG Jing¹

1. Xi’an Thermal Power Research Institute Co. Ltd., Xi’an 710032, China;
2. College of Materials Science and Engineering, Xi’an University of Science and Technology, Xi’an 710054, China;
3. Huaneng Power International Inc., Beijing 100031, China

Received:2015-03-23 Online:2016-02-18 Published:2016-03-21

摘要/Abstract

摘要： 针对脱硫废水的水质特点，在系统考察4种脱硫废水预处理工艺（CaSO4晶种法、FS-66药剂法、Ca（ＯＨ）2+Na2CO3联合工艺、NaOH+Na2CO3联合工艺）的基础上，探索了预处理后脱硫废水在管式膜错流微滤过程中悬浮物颗粒粒径的变化规律及其对产水水质的影响。研究结果表明：NaOH+Na2CO3联合工艺为最佳的脱硫废水预处理工艺，该工艺对脱硫废水中的Ca2+、Mg2+及全硅具有优异的去除效果；在所设计的试验条件下，悬浮物颗粒的平均粒径从14.5 μm降至5.1 μm，微滤产水通量及出水水质均较为稳定，微滤产水经进一步脱盐后可以回用。研究成果为电厂脱硫废水深度处理奠定了基础。

关键词: 电厂, 脱硫废水, 预处理, 粒径分布, 错流微滤, 软化

Abstract: Considering the quality characteristics of FGD wastewater, the variations in particle size distribution of the pretreated-FGD wastewater and their effects on effluent quality during the tubular crossflow microfiltration process are studied based on the systematic analysis on four different pretreatment methods (i.e. calcium sulfate seeding technique, FS-66treatment, combination of calcium hydroxide and sodium carbonate, combination of sodium hydroxide and sodium carbonate). The results indicate that the combination of sodium hydroxide and sodium carbonate is the best pretreatment method compared with three other methods, which excels in the removal of Ca2+, Mg2+ and total silica. Under the designed testing conditions, the average particle size decreases rapidly from 14.5 μm to 5.1 μm. Meanwhile, both the flux and quality of water produced from microfiltration are quite stable during the entire experimental process. After further desalination the water can be even recycled and reused. This result has established the foundation for advanced FGD wastewater treatment of thermal power plants.

Key words: thermal power plant, FGD wastewater, pretreatment, particle size distribution, crossflow microfiltration, softening

中图分类号:

X77
TM621.8

刘亚鹏，王金磊，陈景硕，毛进，王璟. 火电厂脱硫废水预处理工艺优化及管式微滤膜实验研究[J]. 中国电力, 2016, 49(2): 153-158.

LIU Yapeng, WANG Jinlei, CHEN Jingshuo, MAO Jin, WANG Jing. Optimization of FGD Wastewater Pretreatment Technique for Thermal Power Plant and Test Studies on Tubular Crossflow Microfiltration Process[J]. Electric Power, 2016, 49(2): 153-158.

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链接本文: https://www.electricpower.com.cn/CN/10.11930/j.issn.1004-9649.2016.02.153.06

https://www.electricpower.com.cn/CN/Y2016/V49/I2/153

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火电厂脱硫废水预处理工艺优化及管式微滤膜实验研究

Optimization of FGD Wastewater Pretreatment Technique for Thermal Power Plant and Test Studies on Tubular Crossflow Microfiltration Process

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火电厂脱硫废水预处理工艺优化及管式微滤膜实验研究

Optimization of FGD Wastewater Pretreatment Technique for Thermal Power Plant and Test Studies on Tubular Crossflow Microfiltration Process

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