桃溪水库水质监测与评价
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摘要
本研究选取桃溪水库2013-2018年常规水质监测数据,利用单因子评价法、单项污染指数法、综合污染指数法和综合营养状态指数法等对桃溪水库的水质状况、变化趋势及水体的富营养化程度进行了分析与评价。结果表明,桃溪水库水质等级整体处于Ⅱ～Ⅲ类,处于中营养化水平;COD_(Mn)、BOD_5、TN、TP和chla等水质指标浓度呈现年度周期性变化,且水质有变差的趋势;水体绝大多数月份的TN/TP比值大于13,属于磷限制水体。
The routine water quality monitoring data of Taoxi Reservoir during 2013-2016 were selected, and the methods of single factor evaluation, single pollution index, comprehensive pollution indices and comprehensive trophic status indices were employed for the analyzation and evaluation of water quality status, change trend and eutrophication degree for Taoxi Reservoir. The results showed that the water quality of Taoxi Reservoir, as a whole, met the Ⅱ～Ⅲ grade of Environmental quality standards for surface water and was in the middle eutrophication level; the annual cyclical changes about water concentrations such as COD_(Mn), BOD_5, TN, TP and chla were found and the water quality has a tendency to deteriorate; the TN/TP ratios were greater than 13 in most months indicated it was phosphorus-restricted water.
The routine water quality monitoring data of Taoxi Reservoir during 2013-2016 were selected, and the methods of single factor evaluation, single pollution index, comprehensive pollution indices and comprehensive trophic status indices were employed for the analyzation and evaluation of water quality status, change trend and eutrophication degree for Taoxi Reservoir. The results showed that the water quality of Taoxi Reservoir, as a whole, met the Ⅱ～Ⅲ grade of Environmental quality standards for surface water and was in the middle eutrophication level; the annual cyclical changes about water concentrations such as COD_(Mn), BOD_5, TN, TP and chla were found and the water quality has a tendency to deteriorate; the TN/TP ratios were greater than 13 in most months indicated it was phosphorus-restricted water.
引文
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2 Lipczynska-Kochany E.Effect of climate change on humic substances and associated impacts on the quality of surface water and groundwater:A review[J].Science of the Total Environment,2018,640(2):1548-1565.
3 向平,张智,张南.重庆主城区水源水质特征综合评价及聚类分期分析[J].重庆大学学报,2013,36(8):33-39.
4 章亚麟.环境水质监测质量保证(第2版)[M].北京:化学工业出版社,1994.
5 国家环境保护局.GB3838-2002地表水环境质量标准[S].北京:中国环境科学出版社,2002.
6 中华人民共和国环境保护部.地表水环境质量评价办法(试行)[R],2011.
7 方春霞,盛敏敏,宗梅,等.滁州市沙河集水库水质监测与评价[J].蚌埠学院学报,2017,6(5):35-38.
8 古田县环境保护局.福建省古田县城区饮用水水源保护区调整方案编制说明[R],2007.
9 武暕,李延东,于宁,等.汤河水库富营养化评价及风险预警[J].环境保护与循环经济,2018,38(10):54-58.
10 张绍斌,李源媛,谭碧华,等.化成水库饮用水源地富营养化状况的分析与评价[J].四川环境,2018,37(5):94-99.
11 张思冲,张雪萍,廖永丰.营养度指数法在寒地湖泊富营养化评价中的应用[J].哈尔滨工业大学学报,2003,(4):416-419.