生态与农村环境学报2017，Vol.33Issue(9)：830-835,6.DOI:10.11934/j.issn.1673-4831.2017.09.009
农药废水生物处理过程中溶解性有机物特性及荧光强度与COD的关系
Characteristics and Fluorescence Intensity of DOM in Pesticides Wastewater Under Bio-Treatment and Their Re-lationships With Concentration of COD
摘要
Abstract
Three-dimensional fluorescence spectrum was used to investigate fluorescence spectral characteristics of dis-solved organic matter(DOM)in organic pesticides wastewater under treatment,in an attempt to establish correlation be-tween DOM fluorescence intensity and COD concentration.The analysis shows that there are three fluorescence peaks in the three-dimensional fluorescence spectrum.They are Peak A in the visible light zone reflecting the existence of fulvic acid,Peak B in the UV light zone reflecting the existence of fulvic acid and Peak C in the high excitation wavelength zone reflecting the existence of tryptophan.The fulvic acid with fluorescence in the visible light and UV light zones was degraded into more biodegradable tryptophan with fluorescence in the high excitation wavelength zone after the wastewater went through the air floatation tank,hydrolysis acidification tank and anaerobic fluidized bed.After going through the contact ox-idation tank,the 3 types of DOM in the wastewater declined in fluorescence intensity as a result of biodegradation.Among the three,tryptophan degraded more quickly than fulvic acid.Of the four indices of DOM,fluorescence index(IF)and bi-ogenesis index(XBI)reflect that the DOM in the wastewater comes mainly from extraneous sources,and fluorescence in-tensity ratio of fulvic acid in ultraviolet and visible region(rB/A)and humification index(XHI)reveal that the DOM has the properties of humus.With the treatment going on,both the fluorescence intensity of fulvic acid and the concentration of COD decreased with COD dropping from 3 311.0 to 169.6 mg·L-1.The fulvic acid in the visible light zone dropped from 4 065.2 to 903.1 in fluorescence intensity,and the fulvic acid in the UV light zone did from 4 023.1 to 178.6.A good correlation between COD concentration and fluorescence intensities of the fulvic acid in the visible light and UV light zones has been discovered,with correlation coefficients being 0.978 1 and 0.981 3,respectively,which indicates that the tech-nique of 3-D fluorescence spectrometry can be used to monitor real-time changes in COD concentration in organic pesti-cides wastewater under treatment.关键词
有机农药废水/三维荧光光谱/溶解性有机物/荧光强度/CODKey words
organic pesticides wastewater/three-dimensional fluorescence spectrum/dissolved organic matter/fluores-cence intensity/COD分类
资源环境引用本文复制引用
黄健,闫升,张华,王坤,刘沛然,全桂军,田纪宇..农药废水生物处理过程中溶解性有机物特性及荧光强度与COD的关系[J].生态与农村环境学报,2017,33(9):830-835,6.基金项目
安徽省高校优秀青年人才支持计划重点项目(gxyqZD2017059) （gxyqZD2017059）
安徽省高校优秀青年骨干人才国内外访学研修项目(gxfx2017054) （gxfx2017054）
安徽省高校自然科学研究项目(KJ2016A817,KJ2016JD09) （KJ2016A817,KJ2016JD09）
国家水体污染控制与治理科技重大专项(2014ZX07405-003-03) （2014ZX07405-003-03）
