毕业论文移动版

摘要：为了探讨水生鸢尾在高盐含铜废水中的生长状况，通过配制人工废水：含有相同浓度的铜离子而不同浓度的NaCl（Na含量分别为：0、1%、2%、4%、6%、8%、10%）的废水样,然后观察并记录水生鸢尾在不同盐分含量的含铜废水中的生长情况。实验结果显示，高盐含铜废水对人工湿地中水生鸢尾的生长及叶绿素含量有显著的影响：盐分含量越高，植株的生长及叶绿素含量受到的影响越大，废水中盐浓度较低时，对水生鸢尾的生长具有一定的促进作用。反之则对植株带来伤害，严重时可导致植株死亡。从实验数据中可知，铜离子通过影响水生鸢尾的净光合速率及人工湿地液的PH等从而对水生鸢尾的生长产生一定的抑制作用，实验植株同时也会吸收废水中的铜离子，且实验数据证明，水生鸢尾对钠和铜的富集主要是在根部，茎叶也可以富集一定程度的钠和铜，但是没有根系富集量高。本实验也证明水生鸢尾可以作为良好的污水处理材料，为以后的实践运用提供有参考价值的理论依据。70027

毕业论文关键词: 高盐含铜废水、人工湿地、水生鸢尾、叶绿素含量、生长

Effects of High-salt Copper-containing Wastewater on Growth and Chlorophyll Content of aquatic Iris

Abstract: In order to explore the aquatic iris growth in high salt wastewater containing copper, through the preparation of artificial wastewater: with the same concentration of copper ion and different concentrations of NaCl (Na content respectively: 0, 1%, 2%, 1%, 6%, 8%, 6%) of the waste water sample, and inspection of aquatic iris in different growth situation of salt content of the wastewater containing copper. The results showed that high-salt copper-containing wastewater had a significant effect on the growth and chlorophyll content of Iris in artificial wetlands. The higher the salt content, the greater the negative effect on the growth and chlorophyll content of the plant, the lower the salt concentration in the wastewater, the growth of the aquatic iris has a certain role in promoting. Otherwise the plants harm, severe cases can lead to plant death. The lower concentration of copper can inhibit its growth by affecting the net photosynthesis rate of the irises , Plants also absorb copper ions in wastewater, According to the experimental data, it is proved that the absorption of sodium and copper is mainly in the roots, the leaves can also enrich a certain degree of sodium and copper, but it's lower. The experiment can also prove that the aquatic iris can be used as a good sewage treatment materials. It also can provide a reference value of the theoretical basis for the future experiments.

key word: high-salt copper-containing wastewater; aquatic iris; artificial wetland; Chlorophyll growth

目  录

1绪论 1

1.1引言 1

1.2高盐含铜废水对植物生长的影响 1

1.2.1高盐度废水对植物生长的影响 1

1.2.2铜离子对植物生长的影响 2

1.3水生植物介绍 3

1.3.1水生植物对环境的净化作用 3

1.4水生鸢尾概述 4

1.4.1水生鸢尾的生物学特性 4

1.5人工湿地应用的相关研究进展 4

1.5.1人工湿地的概述 4

1.5.2人工湿地的作用 4

1.6 课题的研究意义及内容 5

2. 实验内容与设计 (责任编辑：qin)