南阳市饮用水源鸭河口水库水质评价.doc

文档介绍：南阳市饮用水源鸭河口水库水质评价

摘要:于2012年对鸭河口水库粪大肠菌群、叶绿素a和水质理化指标进行监测,按水样采集标准方法于水库出口处采样,采用营养状态指数法对中线水源区进行营养状态评价。结果表明,,;单项理化监测指标中除总氮为Ⅲ类水质标准外,其他监测指标均符合Ⅰ类水质标准;丰水期、枯水期和平水期3个水期水质基本相近。综合评价,鸭河口水库水质稳定,处于中营养状态。
关键词:鸭河口水库;水质;富营养化;监测;评价;南阳市
中图分类号:X143文献标识码:A文章编号:0439-8114(2014)08-1782-04

Evaluating the Water Quality of Drinking Water Source from Yahekou Reservoir in Nanyang City

WANG Yi1,SHI Jian-wei1,FAN Pan-pan2,FENG Guo1,NIU Qi-kai1,ZHAO Guang-qian1,MAO Xiao1
( Supervision Station of Nanyang in Henan Province, Nanyang 473000,Henan,China;
of Life Science and Technology, Nanyang Normal University,Nanyang 473061,Henan,China)

Abstract: Fecal coliform, chlorophyll a content and physicochemical indexes were monitored at the outlet of Yahekou Reservoir in 2012. Water samples were collected by standard methods. The method of trophic status index was used to evaluate the trophic status of the water quality. The results showed the trophic status index of chlorophyll a was and the nutritional index of water was . The physicochemical indexes excepted total nitrogen are under the standard of
Ⅰtype water, and the total nitrogen was under the standard of Ⅲ type water. The water quality of wet water period, common water period and low water period was similar. Comprehensive results showed that water trophic state of this water area was stable and could be regarded as mesotrophy.
Key words: Yahekou reservoir; water quality; eutrophication; monitoring; assessment;Nanyang City
南阳市饮用水源为鸭河口水库,位于长江流域汉江支流唐白河水系白河上游的南召县皇路店镇鸭河村,上距南召县城35 km,下距南阳市40 km,是汉江支流白河上的主要防洪控制工程。鸭河口水库工程始建于1958年,1959年大坝合拢,1960年拦洪蓄水,并于1988―1992进行了除险加固,属多年调节大型水库,是一座以防洪、灌溉为主,兼顾发电、养殖、城市供水及旅游等综合利用的大型水利枢纽。鸭河口水库控制流域面积3 030 km2,%,库区水面面积约120 km2,洄水长度25 km,直接入库河流有6条,最大河流为白河,其次有鸭河、留山河、黄鸭河、松河、空山河等。水库汇流区多年平均降雨量800 mm,其中70%集中在6~9月,且大多以暴雨形式出现[1]。为了了解鸭河口水库水质营养化现状,利用2012年全年于出水口设置监测站的数据进行水质营养状态评价,旨在掌握水质季节动态变化特征,以保护库区水质,防止其富营养化,保证南阳市饮用水安全和工