基于EMMs特征的酵母厂生产污水DOM与重金属络合作用分析  

Analysis of the Complexation between DOM and Heavy Metals in Yeast Factory Wastewater Based on EMMs Characteristics

作　　者：王悦 程艳 王显丽 多兰·哈布德力 张娇 WANG Yue;CHENG Yan;WANG Xianli;Doran HABDELLI;ZHANG Jiao(Xinjiang Academy of Environmental Protection Sciences,Urumqi Xinjiang 830011,China;Xinjiang Key Laboratory for Environmental Pollution Monitoring and Risk Warning,Urumqi Xinjiang 830011,China;Irtysh River Field Station for Environmental Risk Warning and Observation,Altay Xinjiang 836500,China;Altay Regional Ecological Environment Bureau,Altay Xinjiang 836500,China;Environmental Emergency Management Center of Altay Ecological Environment Bureau,Altay Xinjiang 836500,China)

机构地区：[1]新疆环境保护科学研究院,新疆乌鲁木齐830011 [2]新疆环境污染监控与风险预警重点实验室,新疆乌鲁木齐830011 [3]新疆阿勒泰额尔齐斯河环境风险预警观测野外台站,新疆阿勒泰836500 [4]阿勒泰地区生态环境局,新疆阿勒泰836500 [5]阿勒泰地区生态环境局环境应急管理中心,新疆阿勒泰836500

出　　处：《新疆环境保护》2024年第2期1-10,共10页Environmental Protection of Xinjiang

基　　金：自治区重点实验室开放课题(2022D04006)。

摘　　要：以新疆某酵母企业污水为例,利用三维荧光光谱技术分析探讨重金属离子对该城市涉污企业污水溶解性有机物三维荧光光谱的影响规律和DOM—重金属的络合作用,得到以下结论:该企业生产污水为高色度、高浓度有机废水,污水处理厂进水中以类蛋白荧光T峰、B峰为主,类腐殖质荧光A峰、C峰存在但不显著。荧光淬灭法研究显示:不同金属离子浓度对DOM组分荧光性质的影响程度不同,不同金属离子对DOM组分荧光的淬灭程度存在差异,并且金属离子浓度的变化也会导致DOM组分荧光峰位置的改变。利用修正型Stern-Volmer模型来定量描述DOM各组分荧光峰与不同金属离子络合作用的强弱,结果表明:各金属离子均与DOM组分发生络合反应,Cu^(2+)与Mn^(2+)对荧光峰的络合程度为T峰>A峰>C峰>B峰,Fe^(2+)对荧光峰的络合程度为T峰>B峰>A峰>C峰。T峰与各金属离子络合能力为Fe^(2+)>Cu^(2+)>Mn^(2+),B峰为Fe^(2+)>Mn^(2+)>Cu^(2+),C峰与A峰与各金属离子络合能力为Cu^(2+)>Mn^(2+)>Fe^(2+)。Taking the wastewater from a yeast enterprise in Xinjiang as an example,using three-dimensional fluorescence spectroscopy technology,the influence of heavy metal ions on the three-dimensional fluorescence spectrum of dissolved organic compounds in the wastewater of the city's polluting enterprises and the complexation effect of DOM-heavy metals were analyzed.The following conclusions had been drawn:(1)The wastewater produced by the enterprise was a high chromaticity and high concentration organic wastewater.The inflow of the sewage treatment plant of this enterprise was mainly characterized by protein like fluorescence T and B peaks,while humic like fluorescence A and C peaks exist but was not significant.(2)Using fluorescence quenching method,the results hads howed that different concentrations of metal ions hadvarying degrees of influence on the fluorescencepro perties of DOM components;there had been differences in the quenching degree of different metal ions on the fluorescence of DOM components;and the changes of metal ion concentration had also lead to changes of the fluorescence peak position of DOM components.(3)Using a modified Stern-Volmer model to quantitatively describe the strength of the strength of complexation with fluorescence peaks of DOM components and different metal ions,the results had showed that all metal ions had complexation reactions with DOM components;and the degree of complexation between Cu^(2+)and Mn^(2+)to the fluorescence peak was T peak>A peak>C peak>B peak,while the degree of complexation between Fe^(2+)and the fluorescence peak was T peak>B peak>A peak>C peak;the complexing ability of T peak with various metal ions was Fe^(2+)>Cu^(2+)>Mn^(2+),B peak was Fe^(2+)>Mn^(2+)>Cu^(2+),and C peak and A peak were Cu^(2+)>Mn^(2+)>Fe^(2+).

关 键 词：三维荧光光谱 溶解性有机物 荧光强度 金属离子 络合作用 

分 类 号：O657.3[理学—分析化学] X52[理学—化学]