电解-水解-DMBR处理模拟造纸废水中DOM特性
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摘要
采用UV-vis光谱、凝胶色谱和三维荧光光谱技术,对电解-水解-DMBR联合工艺处理模拟造纸废水过程中溶解性有机物(DOM)进行表征。结果表明,废水经过该工艺处理后有机污染物可以被有效的去除。反应器对COD和TOC的去除率分别为91.1%和89.6%。UV-vis光谱图和分子量分布图分析表明,废水经水解酸化池处理后,难降解的大分子物质被分解转化为较易降解的小分子物质。三维荧光光谱图分析表明,废水中DOM主要有高激发波长色氨酸荧光峰(峰A)、紫外光区富里酸荧光峰(峰B)和可见光区富里酸荧光峰(峰C)3个明显的特荧光峰。经电解处理后峰B有成峰趋势;经水解酸化池处理后峰A强度明显增大。荧光指数(FI)、生物源指数(HIX)和腐殖化指数(BIX)的值表明,处理过程中DOM主要是由于微生物代谢而产生的。
UV-vis spectroscopy, gel chromatography and three-dimensional fluorescence spectrum were used to the study of characterizing dissolved organic matter(DOM). The results showed that the organic pollutants could be effectively removed through the above process. The rates of COD and TOC's removal were 91.1% and 89.6% respectively. UV-vis spectra and molecular weight distribution showed that the refractory macromolecules were decomposed into several small degradable molecules after the treating of hydrolytic acidification. Three-dimensional fluorescence spectroscopy showed that the DOM mainly had three fluorescence peaks, including the high excitation wavelength tryptophan fluorescence peak(peak A),the ultraviolet region fluvic acid fluorescence peak(peak B) and the visible light fluvic acid peak(peak C). After the treating of electrolytic, the peak B got a trend of being peak. The gradient of peak A was significantly increased by the treating of hydrolytic acidification. Finally, the values of fluorescence index(FI) and biogenic index(HIX) and humification index(BIX) indicated that the DOM was mainly produced by microbial metabolism.
UV-vis spectroscopy, gel chromatography and three-dimensional fluorescence spectrum were used to the study of characterizing dissolved organic matter(DOM). The results showed that the organic pollutants could be effectively removed through the above process. The rates of COD and TOC's removal were 91.1% and 89.6% respectively. UV-vis spectra and molecular weight distribution showed that the refractory macromolecules were decomposed into several small degradable molecules after the treating of hydrolytic acidification. Three-dimensional fluorescence spectroscopy showed that the DOM mainly had three fluorescence peaks, including the high excitation wavelength tryptophan fluorescence peak(peak A),the ultraviolet region fluvic acid fluorescence peak(peak B) and the visible light fluvic acid peak(peak C). After the treating of electrolytic, the peak B got a trend of being peak. The gradient of peak A was significantly increased by the treating of hydrolytic acidification. Finally, the values of fluorescence index(FI) and biogenic index(HIX) and humification index(BIX) indicated that the DOM was mainly produced by microbial metabolism.
引文
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[2]李志萍,刘千钧,林亲铁,等.造纸废水深度处理技术的应用研究进展[J].中国造纸学报,2010,30(1):183-186.Li Zhiping,Liu Qianjun,Lin Qintie,et al.The application study progress of advanced treatment technology of papermaking wastewater[J].Transactions of China Pulp and Paper,2010,30(1):183-186.
[3]张成,雷利荣,李友明.臭氧处理对造纸废水COD和色度去除效果研究[J].造纸科学与技术,2016,35(3):79-81.Zhang Cheng,Lei Lirong,Li Youming.Chemical oxygen demand and color removal efficiency of papermaking wastewater with ozonation[J].Paper Science&Technology,2016,35(3):79-81.
[4]杨志猛,王明月,曹井国,等.组合生物膜与Fenton联合工艺对制浆造纸废水深度处理研究[J].水处理技术,2015(6):112-115.Yang Zhimeng,Wang Mingyue,Cao Jingguo,et al.Advanced treatment of pulping and papermaking wastewater by combined process of biofilm and Fenton[J].Technology of Water Treatment,2015(6):112-115.
[5]许明,吴云波,涂勇,等.厌氧水解-A/O工艺处理废纸造纸废水试验研究[J].环境科学与技术,2015(5):119-124.Xu Ming,Wu Yunbo,Tu Yong,et al.Study on UASB-A/O for treating regenerated papermaking wastewater[J].Environmental Science&Technology,2015(5):119-124.
[6]刘丽.EGSB/射流曝气/气浮工艺处理木浆造纸废水[J].中国给水排水,2014,30(22):133-135.Liu Li.EGSB reactor/jet aeration/air flotation for treatment of wastewater from aspen APMP process[J].China Water&Wastewater,2014,30(22):133-135.
[7]Kimura K,Yamato N,Yamamura H,et al.Membrane fouling in pilot-scale membrane bioreactors(MBRs)treating municipal wastewater[J].Environmental Science and Technology,2005,39(16):6293-6299.
[8]孙琪媛,胡以松,王晓昌,等.投加粉末活性炭对DMBR处理污水性能的影响[J].中国给水排水,2016(19):40-43.Sun Qiyuan,Hu Yisong,Wang Xiaochang,et al.Effect of addition of powdered activated carbon on wastewater treatment performance of DMBR[J].China Water&Wastewater,2016(19):40-43.
[9]Ye Shengquan,Wu Hui,Zhang Chaohua,et al.Study of the hydrolytic acidification-SBR process in aquatic products processing wastewater treatment[J].Desalination,2008,222(1):318-322.
[10]黄钟霆,朱松梅,周振,等.造纸工业园区污水处理厂溶解性有机物迁移转化规律[J].环境工程学报,2017,11(3):1575-1580.Huang Zhongting,Zhu Songmei,Zhou Zhen,et al.Transformation of dissolved organic matters in a papermaking industrial park wastewater treatment plant[J].Chinese Journal of Environmental Engineering,2017,11(3):1575-1580.
[11]Peuravuori J,Pihlaja K.Molecular size distribution and spectroscopic properties of aquatic humic substances[J].Analytica Chimica Acta,1997,337(2):133-149.
[12]李璐璐,江韬,闫金龙,等.三峡库区典型消落带土壤及沉积物中溶解性有机质(DOM)的紫外-可见光谱特征[J].环境科学,2014,35(3):933-941.Li Lulu,Jiang Tao,Yan Jinlong,et al.Ultraviolet-visible(UV-Vis)spectral characteristics of dissolved organic matter(DOM)in soils and sediments of typical water-level fluctuation zones of Three Gorges Reservoir areas[J].Environmental Science,2014,35(3):933-941.
[13]贺润生,徐荣华,韦朝海.焦化废水生物出水溶解性有机物特性光谱表征[J].环境化学,2015(1):129-136.He Runsheng,Xu Ronghua,Wei Chaohai.Spectral characterization of dissolved organic matter in bio-treated effluent of coking wastewater[J].Environmental Chemistry,2015(1):129-136.
[14]Wang K,Wei G L,Xu J G,et al.Spectral study of dissolved organic matter in biosolid during the composting process using inorganic bulking agent:UV-vis,GPC,FTIR and EEM[J].International Biodeterioration Biodegradation,2013,85:617-623.
[15]Andy B.Fluorescence properties of some farm waters:implications for water quality monitoring[J].Water Research,2002,36(1):189-195.
[16]Chen W,Westerhoff P,Leenheer J A,et al.Fluorescence excitation-emission matrix regional integration to quantify spectra for dissolved organic matter[J].Environmental Science and Technology,2003,37(24):5701-5710.
[17]范春辉,张颖超,杜波,等.制革废水处理过程中溶解性有机物的光谱特性研究[J].光谱学与光谱分析,2015,35(6):1587-1591.Fan Chunhui,Zhang Yingchao,Du Bo,et al.Spectral analysis of dissolved organic matter of tannery wastewater in the treatment process[J].Spectroscopy and Spectral Analysis,2015,35(6):1587-1591.
[18]Chosal D,Youi S,Gunsalusi C.Nucleotide sequence and expression of gene nah H of plasmid NAH7 and homology with gene xyl E of TOL p WWO[J].Gene,1987,55(1):19-28.
[19]Wickland K P,Neff J C,Aiken G R.Dissolved organic carbon in Alaskan boreal forest:sources,chemical characteristics,and biodegradability[J].Ecosystems,2007,10(8):1323-1340.
[20]Zhang Y L,Zhang E L,Yin Y,et al.Characteristics and sources of chromophoric dissolved organic matter in lakes of Yungui Plateau,China,differing in trophic state and altitude[J].Limnology and Oceanography,2010,55(6):2645-2659.
[21]Huguet A,Vacher L,Relexans S,et al.Properties of fluorescent dissolved organic matter in the Gironde Estuary[J].Organic Geochemistry,2009,40(6):706-719.