铁岭市河流氮源超标原因分析

Study on the main nitrogen sources of rivers in Tieling using nitrogen and oxygen isotopes

2008年以前铁岭市河流的主要污染指标为COD和氮,但2008~2014年COD污染基本得到控制,而其主要污染因子已变为氨氮。目前无论从招标倍数、超标频次上看,氮源是目前主要的污染指标。本文利用氮氧同位素研究铁岭市河流氮源超标问题,并分析了原因。

The main pollution indexes of rivers in Tieling were COD and ammonia nitrogen before 2008,but the COD pollution was under control from 2008 to 2016.The main pollution factors has change into ammonia,both from the tender multiples,exceed the standard frequency that nitrogen source was the major pollution indicator.This paper will using nitrogen and oxygen isotope to study the problem of Tieling River main nitrogen source exceed the standard.