The control of black and odorous water bodies in rural areas is an important part of the battle against agricultural and rural pollution.However,there are few reports on the causes and characteristics of rural black and odorous water body pollution in the Yellow River basin.In this study,We selected 3 typical counties(districts)in Jincheng city,exploring the composition and source of dissolved organic matter(DOM)through 3 D fluorescence spectroscopy and correla-tion analysis.The cause and correlation between water quality index and fluorescence characteris-tics were analyzed.The results show that:the main pollution factors of black and odorous water bodies in A,B and C counties(districts)are Domestic Sewage,Livestock Wastewater and Endoge-nous Pollution respectively.Based on fluorescence spectrum,it was found that DOM from three different pollution sources was mainly composed of soluble microbial metabolites(280/335,275/345,255/345),low excitation tyrosines(220/310)and tryptophan(225/340,245/380,225/340).There was a close correlation between different pollution types(DO,TN,NH3-N)and fluores-cence index(FI,BIX,HIX).In terms of Domestic Sewage,DO and HIX showed positive correla-tion,with the highest correlation coefficient of 0.994(p＜0.01).Nevertheless,in terms of Endog-enous Pollution,TN showing negative correlation with FI,the highest correlation coefficient was-0.954(p＜0.05),In terms of Livestock Wastewater,NH3-N and BIX showed negatively relat-ed,with the highest correlation coefficient of-0.998(p＜0.05).
关键词
农村黑臭水体/污染因子/光谱研究/相关性分析
Key words
Rural black and odorous water/Pollution factor/Spectral study/Correlation analysis
维普
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