摘要
2013年12月—2015年2月,对南淝河老城区约4 km河段水体和主要点源的氮、磷污染物进行测定,并利用碳氮比（CODCr/TN）、氮磷比（TN/TP）、氨氮百分含量（NH3-N/TN）等主要指标对所得数据进行分析研究。结果表明,南淝河老城区段水体的氮磷污染严重,氨氮百分含量接近甚至超过50%,具有一般城市生活污水的特征;氮磷比在春夏季处于藻类适宜的生长范围（9.0〈TN/TP〈22.6）;整个水体处于低碳氮比水平（碳氮比小于2.5）,不利于水体的净化;主要受上游望塘污水处理厂、城市生活污水和地表径流的影响。其主要支流四里河水体的氮磷污染亦相当严重,且氮、磷污染物的输入途径一致。
In this study,nitrogen and phosphorus pollutants in approximate 4 km old town water body as well as the typical point pollution sources of the Nanfei River were determined from Dec. 2013 to Feb. 2015. And then the observation data were analyzed by using CODCr/TN,TN/TP and NH3-N/TN. Results showed that there was heavy nitrogen and phosphorus pollution in the old town water body,NH3-N/TN was close to or above 50%,mainly caused by the Wangtang sewage treatment plant,urban sewage and city runoff. Its TN/TP ratio was 9. 0 〈 TN/TP 〈 22. 6,which is the optimal range of algae growth in spring and summer.In addition,the whole water body was in lower C/N ratio condition（ CODCr/TN 〈 2. 5）,which is unfavorable for purification.Furthermore,its tributary Sili River was also polluted by nitrogen and phosphorus contaminants,which has a similar input pathway.
出处
《中国环境监测》
CAS
CSCD
北大核心
2017年第3期165-171,共7页
Environmental Monitoring in China
基金
国家水体污染控制与治理科技重大专项(2011ZX07303-002)
中国清洁发展机制赠款项目“安徽省农业、生态领域适应气候变化对策分析”
合肥市大气能见度与相对湿度、PM10及PM2.5的关系(2015-2)
安徽农业大学稳定人才项目(wd2016-1)
关键词
比值法
南淝河
老城区
氮、磷
ratio method
the Nanfei River
old town
nitrogen and phosphorus
