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城市污水处理厂二级出水DOM的荧光组分、分子特性和来源

杨毅,  赵睿,  郑振泽,  舒麒麟,  刘伟

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文章导航 > 环境工程  > 2024 >  42(12): 66-72
杨毅, 赵睿, 郑振泽, 舒麒麟, 刘伟. 城市污水处理厂二级出水DOM的荧光组分、分子特性和来源[J]. 环境工程, 2024, 42(12): 66-72. doi: 10.13205/j.hjgc.202412009
引用本文: 杨毅, 赵睿, 郑振泽, 舒麒麟, 刘伟. 城市污水处理厂二级出水DOM的荧光组分、分子特性和来源[J]. 环境工程, 2024, 42(12): 66-72. doi: 10.13205/j.hjgc.202412009
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YANG Yi, ZHAO Rui, ZHENG Zhenze, SHU Qilin, LIU Wei. FLUORESCENT COMPONENTS, MOLECULAR PROPERTIES AND SOURCES OF DOM IN SECONDARY EFFLUENT OF MUNICIPAL SEWAGE TREATMENT PLANTS[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(12): 66-72. doi: 10.13205/j.hjgc.202412009
Citation: YANG Yi, ZHAO Rui, ZHENG Zhenze, SHU Qilin, LIU Wei. FLUORESCENT COMPONENTS, MOLECULAR PROPERTIES AND SOURCES OF DOM IN SECONDARY EFFLUENT OF MUNICIPAL SEWAGE TREATMENT PLANTS[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(12): 66-72. doi: 10.13205/j.hjgc.202412009
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城市污水处理厂二级出水DOM的荧光组分、分子特性和来源

doi: 10.13205/j.hjgc.202412009

  • 1. 西安建筑科技大学 环境与市政工程学院, 西安 710055;

  • 2. 西安建筑科技大学 陕西省环境工程重点实验室, 西安 710055;

  • 3. 西安建筑科技大学 西北水资源与环境生态教育部重点实验室, 西安 710055;

  • 4. 中国市政工程西南设计研究总院有限公司, 成都 610000

基金项目: 

陕西省自然科学基础研究计划项目(2021JM-375)

国家自然科学基金项目(21407119)

西安建筑科技大学自然科学专项(ZR21019)

详细信息
    作者简介:

    杨毅(1976-),女,博士,副教授,主要研究方向为固体废物资源化与环境中溶解性有机物的特性。yangyi@xauat.edu.cn

    通讯作者:

    杨毅(1976-),女,博士,副教授,主要研究方向为固体废物资源化与环境中溶解性有机物的特性。yangyi@xauat.edu.cn

    舒麒麟(1966-),男,高级工程师,主要研究方向为污染控制及环境影响评价。294419136@qq.com

FLUORESCENT COMPONENTS, MOLECULAR PROPERTIES AND SOURCES OF DOM IN SECONDARY EFFLUENT OF MUNICIPAL SEWAGE TREATMENT PLANTS

  • 1. School of Environmental & Municipal Engineering, Xi'an University of Architecture & Techology, Xi'an 710055, China;

  • 2. Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China;

  • 3. Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xi'an University of Architecture and Technology, Xi'an 710055, China;

  • 4. Southwest Municipal Engineering Design & Research Institute of China, Chengdu 610000, China

    摘要
  • 摘要: 采用三维荧光分光光度法和紫外分光光度法测定城市污水处理厂二级出水DOM,利用平行因子法和相关性分析,揭示城市污水处理厂二级出水DOM的荧光组分、分子特性和来源,为水环境中DOM分子和来源特性研究提供数据基础。结果表明:城市污水处理厂二级出水DOM中主要含有1种类蛋白(类色氨酸)和2种以上的类腐殖质,DOM所含荧光组分类蛋白质(对应峰T1、T2)和类腐殖质(对应峰A、C)呈显著负相关(P＜0.01或P＜0.05),TCOD、SCOD和DOC分别与SUVA254和SUVA260呈负相关(r=-0.65~-0.96,P＜0.01或P＜0.05)。二级出水DOM的荧光指数、自生源指数、腐殖化指数和r(T/C)值分别为1.96~2.19、1.02~1.18、1.82~3.27和2.25~2.95,荧光指数和自生源指数值相对变化较小,而腐殖化指数值相对变化较大。不同城市污水处理厂二级出水DOM组成和分子性质存在差异,但DOM都属于自生生物来源且有机质为新近产生、腐殖化程度较弱,为类腐殖质主导型,主要来源于粪便、生物降解产物等。
    Abstract: The fluorescence components, molecular characteristics and sources of DOM in secondary effluent of municipal sewage treatment plants were revealed by three-dimensional fluorescence spectrophotometry and ultraviolet spectrophotometry with parallel factor analysis and correlation analysis, providing a data basis for the study of DOM molecular composition and source characteristics in aquatic environment. The results showed that the DOM in secondary effluent mainly contained one type of proteinoid (tryptophan-like) and more than two kinds of humus-like. There was a significant negative correlation between the content of proteinoid (corresponding to peak T1 and T2) and humus-like (corresponding to peak A and C) in DOM (P＜0.01 or P＜0.05). TCOD, SCOD and DOC were negatively correlated with the values of SUVA254 and SUVA260 (r=-0.65 to -0.96, P＜0.01 or P＜0.05), respectively. The fluorescence index (FI), biological index (BIX), humification index (HIX) and r(T/C) values of DOM were 1.96 to 2.19, 1.02 to 1.18, 1.82 to 3.27 and 2.25 to 2.95, respectively. The FI and BIX values changed relatively less, while the HIX value changed relatively greatly. There were differences in the composition and molecular properties of DOM in secondary effluent from different municipal wastewater treatment plants. The DOM came from endogenous biological origin, and the organic matter was newly produced with a weak humification degree. The DOM was humus-like-dominated, mainly derived from feces and biodegradation products, etc.
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  • 收稿日期:  2023-10-25
  • 网络出版日期:  2025-01-18

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