[1]ZHANG Haitao,SHI Xuefang,LIU Yabin,et al.Characteristics and Source Identification of Water Pollution of Huayuan River in Huayuan Town Section, Western Hu’nan Province[J].Research of Soil and Water Conservation,2017,24(05):329-336.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
24
Number of periods:
2017 05
Page number:
329-336
Column:
Public date:
2017-10-28
- Title:
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Characteristics and Source Identification of Water Pollution of Huayuan River in Huayuan Town Section, Western Hu’nan Province
- Author(s):
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ZHANG Haitao1, SHI Xuefang2, LIU Yabin1, XU Yunhai1, YANG Haijun1
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1. College of Plant Protection, Hunan Agricultural University;Changsha, Hu’nan 410128, China;
2. Environmental Monitoring Station of Hunan Province, Huayuan, Hu’nan 416499, China
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- Keywords:
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western Huayuan River; correlation; principal component analysis; water pollutants; variation; cause analysis
- CLC:
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X522
- DOI:
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- Abstract:
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With the economic development of mining industry, in oder to explore the characteristics and sources of water pollution in the heavily polluted section of Huayuan River, we collected water samples from Jan. 2007 to Dec. 2015 at 6 sites, including 200 m downstream of the Lion Bridge hydropower station, Chuanxincheng, Jiaohua dock, Huihekou, 500 m downstream of the Longke village and 100 m upstream of the Fuqiao hydropower station of Brothers River (as the control point). The contents of Pb, Cd, Mn, Zn, Cr6+, permanganate index, ammonia-nitrogen, COD, and BOD5 were determined and analyzed by correlation and principal component analyses. The results indicated that Mn and ammonia-nitrogen mainly caused the pollution. The highest monitoring values of Mn and ammonia-nitrogen were 2.561 9 mg/L and 2.539 mg/L, respectively. The contents of ammonia-nitrogen and BOD5 decreased firstly and then increased while the other pollutant contents kept at a trend of decreasing during the nine years. Pb—Zn, Mn—Cd, Cr—Cd, Cr—Mn, ammonia-nitrogen-permanganate index, COD—permanganate index, COD—ammonia-nitrogen were significantly positively correlated, respectively (p < 0.01), while COD—Zn, COD—Pb had significant negative correlation (< 0.01), permanganate index—Pb, ammonia-nitrogen—Pb had a significant negative correlation (p < 0.05), BOD5—permanganate index, BOD5—ammonia-nitrogen had a significant positive correlation (p < 0.05), indicating that these pollutants greatly interacted each other. At the same time, significant positive correlation also existed through site 1 to site 5 (p < 0.01), suggesting that there were the great influences among these monitoring sites. By the principal component analysis, the main influence factors were permanganate index, ammonia-nitrogen, COD, BOD5, Cd, Mn and Cr. The pollution degrees of the six monitoring sites followed the sequence: site 5 > site 1 > site 2 > site 3 > site 4 > site 6. The results of the cause analysis showed that both inorganic and organic pollution existed in the water of Huayuan River, the wastewater from the enterprises around and the domestic sewage were the major sources of river water pollution.