半胱氨酸和Cu^(2+)强化Fe^(3+)/H_(2)O_(2)体系处理焦化废水  

Enhancement of Fe^(3+)/H_(2)O_(2) System by Cysteine and Cu^(2+)for the Treatment of Coking Wastewater

作　　者：姜凤成 徐潇 邱瑶 张传兵 王璐瑶 冯茜茜 王杰 孟红旗[1] 冯智 郭发扬 李艳利[1] 王明仕[1] JIANG Fengcheng;XU Xiao;QIU Yao;ZHANG Chuanbing;WANG Luyao;FENG Xixi;WANG Jie;MENG Hongqi;FENG Zhi;GUO Fayang;LI Yanli;WANG Mingshi(School of Resources and Environment,Henan Polytechnic University,Jiaozuo 454003,China;Huaxia Besince Environmental Technology Co.,Ltd.,Zhengzhou 450016,China;School of Environmental Studies,China University of Geosciences(Wuhan),Wuhan 430078,China;State Environmental Protection Key Laboratory of Source Apportionment and Control of Aquatic Pollution,China University of Geosciences(Wuhan),Wuhan 430078,China)

机构地区：[1]河南理工大学资源环境学院,河南焦作454003 [2]华夏碧水环保科技股份有限公司,河南郑州450016 [3]中国地质大学(武汉)环境学院,湖北武汉430078 [4]国家环境保护水污染溯源与管控重点实验室,湖北武汉430078

出　　处：《环境科学与技术》2025年第2期76-87,共12页Environmental Science & Technology

基　　金：河南省重点研发专项(241111320400,231111320200);中国博士后科学基金资助项目(2023M731170);河南省重点研发与推广专项(科技攻关)项目(222102320102,232102320141);河南省重大科技专项(221100320200);河南理工大学博士基金项目(39B2022-39);河南省自然科学基金资助项目(242300421649)。

摘　　要：针对水质复杂、毒性组分多且厌氧生物处理困难的焦化废水,该文采用半胱氨酸(Cys)和Cu^(2+)强化Fe^(3+)/H_(2)O_(2)体系进行处理,结合COD、挥发酚、BOD/COD(B/C)等指标分析对废水可生化性的提高效果。通过探究反应过程中Fe^(2+)/Fe^(3+)含量、Cu^(2+)/Cu^(+)含量、H_(2)O_(2)和Cys的剩余量变化,以及活性物种的鉴定揭示了Fe^(3+)/Cu^(2+)/Cys/H_(2)O_(2)体系处理焦化废水的机理。结果表明:Cys和Cu^(2+)强化Fe^(3+)/H_(2)O_(2)体系处理后COD和挥发酚去除率相比于Fe^(3+)/H_(2)O_(2)体系分别提高了15.4%、13.6%,且药剂添加量越多,Fe^(3+)/Cu^(2+)/Cys/H_(2)O_(2)体系对焦化废水的处理效果越好;通过B/C的变化发现焦化废水的可生化性得到了明显的提高,结合厌氧微生物处理后COD、挥发酚及毒性抑制物质的变化发现,焦化废水中以酚类为代表的生物毒害物质含量大幅度削减,可见Fe^(3+)/Cu^(2+)/Cys/H_(2)O_(2)体系可通过降低废水的毒性从而提高其可生化性;反应初期Cys将Fe^(3+)、Cu^(2+)迅速还原为Fe^(2+)、Cu^(+)并产生大量HO·攻击焦化废水中的有机污染物,随着反应的进行,Cu^(2+)则通过与酚类污染物氧化降解产生的还原性中间产物快速反应,从而提高Fe^(3+)向Fe^(2+)还原的速率,进而进一步促进了Fe^(3+)/Cu^(2+)/Cys/H_(2)O_(2)体系对焦化废水的处理效果。该文证实了利用Cys和Cu^(2+)强化Fe^(3+)/H_(2)O_(2)体系处理焦化废水的可行性,揭示了强化机理,有利于后续生化处理的稳定运行。In the case of coking wastewater with a complex water quality and a high level of toxicity,as well as the addition-al difficulty of anaerobic biological treatment,the Fe^(3+)/H_(2)O_(2) system reinforced with cysteine(Cys)and Cu^(2+)was employed to treat the wastewater.The effect of this treatment on the improvement of wastewater biochemistry was then analysed in conjunction with the indicators of COD,volatile phenols and B/C.The mechanism of Fe^(3+)/Cu^(2+)/Cys/H_(2)O_(2) system for treating coking wastewater was demonstrated by exploring the changes in Fe^(2+)/Fe^(3+)content,Cu^(2+)/Cu^(+) content,H_(2)O_(2) and Cys residuals during the reaction process,as well as the identification of active species.The results demonstrated that the COD and volatile phenol removal after treatment with Cys and Cu^(2+)reinforced Fe^(3+)/H_(2)O_(2) system exhibited an increase of 15.4%and 13.6%,respectively,in comparison to the Fe^(3+)/H_(2)O_(2) system.Furthermore,the findings indicated that Fe^(3+)/Cu^(2+)/Cys/H_(2)O_(2) system exhibited enhanced efficacy for the treatment of coking wastewater with an increase in the amount of agent added.Additionally,the bioavailability of coking wastewater was enhanced by the alteration of B/C.The biochemistry of coking wastewater was evidently enhanced,as evidenced by the alterations in COD,volatile phenols,and toxicity-inhibiting substances following anaerobic microbial treatment.The concentration of biotoxic substances,exemplified by phenols,in the coking wastewater was markedly diminished,indicating that Fe^(3+)/Cu^(2+)/Cys/H_(2)O_(2) system can mitigate the toxicity of the wastewater and conse-quently improve its biochemistry.At the outset of the reaction,the Cys rapidly reduces Fe^(3+)and Cu^(2+)to Fe^(2+)and Cu^(2+),which are then reduced to Fe^(3+)and Cu^(2+).At the beginning of the reaction,Cys rapidly reduces Fe^(3+)and Cu^(2+)to Fe^(2+)and Cu+and gener-ates a large amount of HO·to remove organic pollutants in coking wastewater.As the reaction progresses,Cu^(2+)undergoes a rapid re

关 键 词：Fe^(3+) Cu^(2+) 半胱氨酸 芬顿氧化 焦化废水 

分 类 号：X703[环境科学与工程—环境工程]