Analysis of the Current Situation and Changes of Water Quality Trend at the End of Jindi River
LIU Huan
DONG Jie
DUAN Yi-fang
LIU Xue-li
Abstract：This article uses the method of single factor pollution index and comprehensive pollution index method ,on the basis of “surface water environment quality standard” (GB3838‐2002) ,select the CODCr ,NH3‐N ,TP ,BOD5and CODMn as the major water quality parameters according to the Environ‐mental Quality Standard for Surface Water (GB3838‐2002) to analysis and evaluate the water quality status of 2013 ,and the change trends from 2009 to 2013 at the end of Jindi River .The result shows that the water quality is poor belonged to class Ⅳ in 2013 .During dry season ,the pollution is most serious and the principle pollutants are N H3‐N and CODCr ;T he second is the rainy season ,the main pollutants are BOD5 and CODCr .The annual average value of each pollution factor has a general trend of descending in recent 5 years ,but with the variation trend in different years and different pollution factors have been great fluctuation .The year of 2009 was the most polluted while the lightest was 2012 ;the content of CODMn ,BOD5 and TP are basically consistent presented a downward trend year by year .The variation of N H3‐N is in content of CODC r ,but the varied range is indented .
Keywords：water quality statuschange trendpollution prevention countermeasuresthe end of Jindi River
Publication Date：2015-01-01
Online Publishing Date：2026-08-28(First online date of this platform, not the publication date of the document)
Pages：5( 50-54 )