浑河流域沈抚段枯水期氮污染特征研究

Characteristics of Nitrogen Pollution in Shen Fu Section of Hunhe River Basin during Dry Season

目的研究浑河流域沈抚段枯水期水质氮污染状况，分析其污染的主要来源，并对水体水质进行评估，为水生态建设及制定浑河流域污染治理方案提供基础数据．方法开展浑河流域沈抚段枯水期水质氮污染状况调查，2015—11—17、2015—12—04和2016—01-05对浑河流域沈抚段6个干流采样点、4个支流采样点和3个排污口采样点共13个固定采样点采样，按照《水和废水监测分析方法》对水样进行检测分析，并依据《地表水环境质量标准》（GB3838--2002）对浑河流域沈抚段进行水质评价．结果浑河流域沈抚段枯水期干流的NOz-N质量浓度在0．064—0．23mg／L，部分地区超出天然水体中的常规值0．1mg／L；水体中的NO3-N质量浓度在0．35—2．8mg／L，未超出地表水硝酸盐（以N计）的标准限值10mg/L；水体中的NH4＋-N质量浓度在0．91—3．12mg/L，部分区域超出地表水V类标准限值2．0mg/L；水体中的TN质量浓度在2．7—20．9mg／L，严重超出地表水V类标准限值2．0mg／L．结论浑河流域沈抚段冬季枯水期水质属于V类水，氮污染严重．干流中大部分的氮污染源是来自于生活污水、畜禽粪便和工业废水．

To study the quality situation of nitrogen pollution of the Hunhe River Basin in Shen Fu section during winter dry season, the main sources of pollution was analyzed and the water quality was assessed, which provides basic data for ecological construction and the development of water pollution control programs in Hunhe fiver basin. The water nitrogen pollution survey of the Hunhe fiver basin in Shen Fu section was carded out during dry season. 13 fixed sampling points were sampled,which includes 6 main stream sampling points,4 tributaries sampling points and 3 outfall sampling points. Using the method in＂ Water and Wastewater Monitoring and Analysis Methods＂the water samples were detected. The water quality was assessed on the basis of ＂Surface Water Environmental Quality Standards＂ （ GB3838--2002 ）. The NO2- - N concentration in main stream during dry season of Hunhe river Shen Fu section changes between 0. 064 to 0. 23 mg/L, parts be- yond the normal value of 0. 1 mg/L in natural water. The Nor - N concentration of the water is distributed in 0. 35- 2. 8 mg/L, does not beyond the limit value of surface water nitrate （ in N gauge） standard 10 mg/L. The NH4 - N concentration of the water is distributed in 0. 91- 3.12 mg/L, which goes beyond the limit value of surface water class V standard 2. 0 mg/L. The TN concentration of the water is distributed in 2. 7-20. 9 mg/L, which goes beyond the limit val- ue of surface water class V standard 2. 0 mg/L. The water quality of Hunhe river basin in Shen Fu section during dry season belongs to the class V water. Nitrogen pollution is serious and most nitro- gen of the main stream comes from domestic sewage, animal waste and industrial wastewater dis- charge.