燃煤电厂脱硫废水重金属处理技术研究进展
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摘要
燃煤电厂脱硫废水处理工艺单一,重金属稳定达标排放存疑。文中从脱硫废水重金属的产生来源、排放标准、治理技术等方面,介绍了不同燃煤煤种的重金属含量及分布特征,归纳了国内外脱硫废水的水质特点,分析了脱硫废水中重金属的排放标准,综述了国内外现有脱硫废水重金属处理技术的特征,简述了国内脱硫废水零排放工程的典型应用案例,展望了脱硫废水重金属处理技术的研究和发展趋势。
Treatment process of desulfurization wastewater from coal-fired power plants is simple,and it is difficult to stably reach the emission standards for heavy metals.In this paper,the sources,emission standards and treatment technologies of heavy metals in desulfurization wastewater are reviewed.The contents and distribution characteristics of heavy metals in different types of coals are introduced.The water quality characteristics of desulfurization wastewater at home and abroad are summarized.The emission standards for heavy metals in desulfurization wastewater are analyzed.The characteristics of current heavy metal treatment technologies for desulfurization wastewater at home and abroad are reviewed,and typical application cases of domestic zero-emission wastewater desulfurization projects are described briefly.Prospects for research and development trend of heavy metal treatment technology for desulfurization wastewater are provided in the end.
Treatment process of desulfurization wastewater from coal-fired power plants is simple,and it is difficult to stably reach the emission standards for heavy metals.In this paper,the sources,emission standards and treatment technologies of heavy metals in desulfurization wastewater are reviewed.The contents and distribution characteristics of heavy metals in different types of coals are introduced.The water quality characteristics of desulfurization wastewater at home and abroad are summarized.The emission standards for heavy metals in desulfurization wastewater are analyzed.The characteristics of current heavy metal treatment technologies for desulfurization wastewater at home and abroad are reviewed,and typical application cases of domestic zero-emission wastewater desulfurization projects are described briefly.Prospects for research and development trend of heavy metal treatment technology for desulfurization wastewater are provided in the end.
引文
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[17]刘海洋,江澄宇,谷小兵,等.燃煤电厂湿法脱硫废水零排放处理技术进展[J].环境工程,2016,34(4):33-36.
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[19]张方,郭二民,安镝霏,等.烟气脱硫废水处理技术前沿研究进展[J].环境影响评价,2018,40(6):42-46.
[20]王可辉,王妃,祖坤勇,等.全膜法技术在电厂脱硫废水零排放中的应用[J].净水技术,2018,37(10):79-83.
[2]林木松,李宇春,苏伟,等.火电厂燃煤重金属分布及其污染控制[M].北京:中国电力出版社,2015.
[3]马双忱,于伟静,贾绍广,等.燃煤电厂脱硫废水处理技术研究与应用进展[J].化工进展,2016,35(1):255-262.
[4]火电厂石灰石-石膏湿法脱硫废水水质控制指标:DL/T 997-2006[S].
[5]詹威全.国内脱硫废水重金属处理不容乐观急需改进现有技术或改变脱硫工艺[C].深圳:2015年中国环境科学学会学术年会论文集(第二卷),2015.
[6]马双忱,温佳琪,万忠诚,等.中国燃煤电厂脱硫废水处理技术研究进展及标准修订建议[J].洁净煤技术,2017,23(4):18-28.
[7]刘海洋,夏怀祥,江澄宇,等.燃煤电厂湿法脱硫废水处理技术研究进展[J].环境工程,2016,34(1):31-35.
[8]CHU P.Technical manual:Guidance for assessing wastewater impacts of FGD scrubbers[R].EPRI Report 1013313,Palo Alto,CA:Electric Power Research Institute,2006.
[9]吴怡卫.石灰石-石膏湿法烟气脱硫废水处理的研究[J].中国电力,2006,39(4):75-78.
[10]SCALA F,ANACLERIA C,CIMINO S.Characterization of a regenerable sorbent for high temperature elemental mercury capture from flue gas[J].Fuel,2013(6):13-18.
[11]郭东明.脱硫工程技术与设备[M].北京:化学工业出版社,2007.
[12]唐和平,陈代敏,张代荣.一体化高效絮凝技术与传统脱硫废水处理工艺的对比分析[J].重庆电力高等专科学校学报,2019,24(I):30-33.
[13]甘平湘.脱硫废水一体化处理系统在火电厂的工程应用及分析[J].中国资源综合利用,2018,36(2):39-43.
[14]吴泽,慕海伦.适用于结晶细、高浓度脱硫废水处理的一体化系统[C].长沙:2017火电厂超低排放脱硫废水零排放技术交流研讨会暨环保技术与装备专委会年会论文集,2017.
[15]HUANG Y H,PEDDI P K,,TANG C,et al.Hybrid zero-valent ironprocess for removing heavy metals and nitrate from flue-gasdesulfurization wastewater[J].Separation and Purification Technology,2013,118(30):690-698.
[17]刘海洋,江澄宇,谷小兵,等.燃煤电厂湿法脱硫废水零排放处理技术进展[J].环境工程,2016,34(4):33-36.
[18]BARRINGTON D J,HO G.Towards zero liquid discharge:The use of water auditing to identify water conservation measures[J].Journal of Cleaner Production,2014(5):571-576.
[19]张方,郭二民,安镝霏,等.烟气脱硫废水处理技术前沿研究进展[J].环境影响评价,2018,40(6):42-46.
[20]王可辉,王妃,祖坤勇,等.全膜法技术在电厂脱硫废水零排放中的应用[J].净水技术,2018,37(10):79-83.