CAJ | 학술논문

根据2005-2010年渭河支流水质监测资料，对渭河陕西段10条主要支流水质有机污染指标 DO、CODMn、NH3- N和 BOD5的变化趋势进行了分析研究。结果表明：近6 a 来渭河10条主要支流有机污染综合指数均呈下降趋势，渭河支流水质有所好转。各支流中，西安、渭南段支流水质改善显著，但西安段个别支流污染仍较严重，还需进一步改善。4种水质有机污染指标中氨氮污染水平仍为最高。分析了近6 a 来渭河流域支流水质改善的原因：一是着力加强污染企业环境监督检查，初步遏制了环境污染恶化趋势；二是环保基础设施建设步伐加快，城镇生活污染问题得到一定的解决。
근거2005-2010년위하지류수질감측자료，대위하협서단10조주요지류수질유궤오염지표 DO、CODMn、NH3- N화 BOD5적변화추세진행료분석연구。결과표명：근6 a 래위하10조주요지류유궤오염종합지수균정하강추세，위하지류수질유소호전。각지류중，서안、위남단지류수질개선현저，단서안단개별지류오염잉교엄중，환수진일보개선。4충수질유궤오염지표중안담오염수평잉위최고。분석료근6 a 래위하류역지류수질개선적원인：일시착력가강오염기업배경감독검사，초보알제료배경오염악화추세；이시배보기출설시건설보벌가쾌，성진생활오염문제득도일정적해결。
AAccording to the water quality monitoring data of the tributaries of Weihe River observed from 2005 to 2010,the changing trends of the organic pollution indicators DO,CODMn ,NH3 - N and BOD5 of the ten major tributaries of Weihe River in Shaanxi section were analyzed. The re-sults show that the organic pollution composite index of the ten major tributaries of Weihe River have been declining,and the water quality of the tributaries of Weihe River has been improved in recent six years. Among all tributaries,the water quality of tributaries in Xiˊan and Weinan sections has been improved notably,but the pollution of individual tributary of Xi’an section is still serious and it needs to be improved further. Ammonia nitrogen pollution level remains the highest in the four kinds of organic pollution indicators of water quality. Through further analysis,we have dis-cerned the reasons for the improvement in water quality of the tributaries of Weihe River in recent six years. First is to strengthen the environmental supervision and inspection of polluting enterprises and initially curb the deterioration of the environmental pollution trend. Second is to accelerate the step of building environmental protection infrastructure and urban domestic pollution problems have been solved to a certain extent.