Analysis on the Changing Trends of Surface Water Quality and Their Causes of Weihe River in Shaanxi Province during Recent Ten Years

• 作者: CHENG Jun-xia GUAN Jian-ling LIU Yong MA Wen-peng PEI Xiao-long WANG Lei XUE Si-she YANG Yu-zhen
• 来源期刊: 气象与环境研究：英文版
• 学科: 地球科学
• 关键词: 水环境质量 地表水 陕西省 渭河 原因 水质监测数据 环境质量标准 评估方法
• 年，卷（期）: 2012,（10）
• 页码范围: 43-47
• 页数: 5页
• 分类号: X824

摘要

[Objective] The study aimed to analyze the changing trends of surface water quality and their causes of Weihe River in Shaanxi Province over past ten years. [Method] Based on the available monitoring data of water quality of Weihe River in Shaanxi Province from 2001 to 2010, the changing trends of surface water quality of Weihe River in Shaanxi Province during recent ten years were assessed by using the assessment method of surface water quality according to the Assessment Method of Surface Water Quality and Environmental Quality Standards for Surface Water (GB 3838-2002). Moreover, the possible reasons for the trends were also proposed. [Result] From 2001 to 2010, there was a relatively decreasing trend of water pollution in Weihe River due to the considerable decline in the content of the main environmental pollutants like permanganate index, 5-day biochemical oxygen demand (BOD5), ammonia nitrogen, oil and volatile phenol. Meanwhile, the comprehensive pollution index fell by 62.7%, eliminating Weihe Rivers black and stink on schedule. However, the overall surface water quality of Weihe River was still polluted heavily in each year, and the pollution control of Xian section should be paid more attention to. [Conclusion] The research could provide scientific references for the comprehensive environmental control of Weihe River in Shaanxi Province.