Quality assessment of water and sediment in Duliujianhe River

doi:10.7523/j.issn.2095-6134.2019.04.013

Abstract

Abstract: Based on the investigation data of water quality and sediment quality of Duliujianhe River and its major tributaries in 2016, single-factor assessment method, composite-index assessment method, and modified Carlson trophic state index method were used to assess the environmental quality of water and surface sediment of Duliujianhe River and its major tributaries. The results show that the water quality of Duliujianhe River was bad and was worse than Grade V (GB 3838-2002). The heavily-polluted tributaries included Xidawa Drainage River, Chentaizi Drainage River, and Shimihe River. The main pollutants were total nitrogen (TN), ammonia nitrogen (NH₃-N), and chemical oxygen demand (COD). Eutrophication occurred in the whole river and 67% of the sampling sites were heavily eutrophic. Based on the results of the single-factor assessment method, the surface sediments were heavily contaminated and the major pollutants were nitrogen, phosphorus, chromium, copper, and nickel.

Key words: Duliujianhe River, water quality assessment, sediment quality, trophic status, eutrophication

CLC Number:

X821

TANG Yongjie, XIA Jingye, CHEN Yajuan, DAI Zheng, CAI Shubo, LIU Chunguang. Quality assessment of water and sediment in Duliujianhe River[J]. , 2019, 36(4): 537-544.

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