Study On Three Dimensional Fluorescence Spectra Of Synthetic Wastewater And Its Characteristic Pollutants

This study used resin separation and for ultrafiltration respectively in two different petrochemical wastewater(refinery wastewater and refinery wastewater)organic pollutants in different types of Components were separated,combined with parallel factor algorithm(PARAFAC),fluorescence information of 3D fluorescence spectra of raw water and the separation group were analyzed.At the same time,the characteristics of the main pollutants in the synthetic wastewater were studied,and the relationship between the main characteristic pollutants in the wastewater and the fluorescence characteristics of the comprehensive wastewater was studied.The petrochemical integrated plant wastewater treatment process,the total fluorescence intensity of three-dimensional fluorescence spectra of refining and refining wastewater were decreased;characteristic fluorescence Peak of two kinds of waste water in the excitation wavelength tryptophan in the low area are located in the λех/еm =230/340 nm,the characteristic Peak of fluorescence intensity and the removal rate of petrochemical refinery wastewater were 50% and 54%;the low excited class of tyrosine fluorescence Peaks were by fluorescence Peak λех/еm =210/300 nm were nm and soluble microbial byproducts fromλех/еm =250/310 nm for oil refinery wastewater characteristic fluorescence Peak disappeared,hydrolysis acidification pretreatment;A characteristic fluorescence Peak from λех/еm=220/305 nm of refinery wastewater,disappeared after aerobic treatment;Humic acid organic fluorescence Peak at RegionV: refinery wastewater by λех/еm =255/465 nm in two before settling tank,the fluorescence intensity increased gradually after deep treatment of refinery wastewater in Region decreased;RegionIII fulvic acid organic fluorescence Peakλех/еm =320/400 nm were increased,the fluorescence intensity of hypoxic water after the follow-up showed no significant changes.Refinery wastewater four kinds of three-dimensional fluorescence spectra result of PRAFAC resin separation Components were divided into 5 groups,the main characteristic fluorescence Peak located in the λех/еm =225/340 nm,235/340 nm,230/380 nm,235/360 nm,245/340 nm;oil refining wastewater of four kinds of three-dimensional fluorescence spectra result of PRAFAC resin separation Components 4 the main Component,characteristic fluorescence Peak located in the λех/еm =225/340 nm,235/360 nm,235/410 nm,200/300 nm.In the different section of sewage treatment,HIS COD,TOC,TN in 4 kinds of resin separation Component in the content are the highest;that of three-dimensional fluorescence spectrum analysis,two kinds of organic pollutants in wastewater HON and the biodegradability of the worst,a major water pollutant for fluorescent wastewater treatment plant,main characteristic fluorescence Peak at λех/еm =235/360 nm.With fluorescence Peakλех/еm =225/340 in refinery wastewater,organic pollutants produced the fluorescence Peak of good biodegradability,the aerobic treatment can be removed completely.The Components of the molecular weight <1kDa,the Peak intensity of fluorescence intensity was the strongest,which accounted for 77.13% of the fluorescence intensity of the wastewater,accounting for about 86.11% of the fluorescence intensity of the wastewater.The two characteristics fluorescence Peaks were λех/еm = 225/340 nm,235/345 nm are two kinds of wastewater,which has a fluorescence Peak of λех/еm = 235/345 nm were anoxic and aerobic treatment significantly enhanced the fluorescence intensity.The fluorescence Peak of main characteristics of pollutants in petrochemical wastewater in benzene,toluene,ethylbenzene,cumene,benzene,xylene,toluene three in λех/еm=205/215 nm/280~295 nm;fluorescence Peak at λех/еm =230/345 nm;two Peaks of phenol inλех/еm =220/300 nm,270/295 nm;two fluorescence Peaks were located by aniline λех/еm =235/335 nm,280/335 nm;fluorescence Peak in chlorobenzene from λех/еm =215/290 nm;no significant fluorescence Peak of nitrobenzene.The characteristic fluorescence Peak of styrene,phenol and aniline is basically the same as that of refinery and refinery wastewater.