摘要
以2013—2018年中国环境监测总站对辽河流域水质的监测数据为基础,分析辽河流域吉林区域的水质状况,采用单因子指数法对水域进行水质状况评价.结果表明,从2013—2018年辽河流域吉林区域的水质从整体来说,具有明显好转的趋势,水质从Ⅳ级转变为Ⅲ级(四种评价指标具体变化为:pH值浮动不明显,水体整体偏弱碱性;DO浓度有明显的上升趋势,数值上升1.33 mg/L;COD Mn浓度呈明显的下降趋势,数值下降1.41 mg/L;NH 3-N浓度具有显著下降趋势,数值上下降1.35 mg/L).主要污染因子已经由以NH 3-N为主转变为以COD Mn为主.研究结果将对恢复辽河流域吉林区域生态环境,治理流域水污染和有效管理水资源提供理论依据.
This evaluation is based on the monitoring data of water quality in Liao River area from 2013 to 2018.And four pollution indexes pH,DO,COD Mn and NH 3-N,were selected as evaluation indexes to evaluate the water quality of Liao River.The main method was single factor index method.The analysis and evaluation results show that the water quality of Liao River shows a gradual improvement trend from 2013 to 2018,and the water quality changes fromⅣtoⅢ(The specific changes of four specific indicators in the year were as follows:the annual fluctuation of pH was small,and the water was alkaline;DO showed an upward trend,rising by 1.33 mg/L;COD Mn showed a downward trend,declining by1.41 mg/L;NH 3-N showed a downward trend,declining by 1.35 mg/L).In recent years,COD Mn is the main contamination factor.The results will provide theoretical basis for ecological environment restoration,water pollution control and water resources management in Liao River Basin.
作者
刘浩
滕洪辉
LIU Hao;TENG Hong-hui(College of Environment Science and Engineering,Jilin Normal University,Siping 136000,China)
出处
《吉林师范大学学报（自然科学版）》
2020年第1期100-104,共5页
Journal of Jilin Normal University:Natural Science Edition
基金
吉林省自然科学基金项目(20170101165JC)
四平市科技发展计划项目(2014049)
关键词
水质状况
辽河流域吉林区域
单项评价指标
water quality evaluation
Liao river in Jilin area
single factor index
