【作者】 何静；

【导师】 万新南；

【作者基本信息】 成都理工大学 ， 环境工程， 2007， 硕士

【摘要】 环境污染严重影响经济的可持续发展与人类的健康和生存。随着经济的日益发展，环境保护已经越来越受到人们的关注，尤其是水资源和水环境日渐成为关注的热点，由于人工湖塘的规模小，未引起研究的重视，但是其数量日益增加，而且与人们的关系越来越密切。因此，对湖塘环境的监测、评价及其污染治理研究，具有现实的意义。本次研究选取成都附近一个典型的人工湖塘——中江龙王塘作为研究对象，通过样品采集和实验分析，研究了湖塘中重金属元素（Pb、Zn、Cu、Cd、Hg、As）的分布状况，对湖塘水体和底积物中的重金属污染程度做出综合评价，并分析了重金属在湖塘水体、底泥以及水体和底泥之间的迁移转化。在对研究区采集样品和进行实验分析的基础上，分析了重金属在水体中的沿程分布特征，以及底积物中重金属的沿程和垂向分布特征，通过分析发现水体中重金属污染物含量之间没有必然的联系，底积物中重金属污染物含量之间的相关性较好。选用了单因子指数模型和内梅罗指数模型对水质进行评价，结果表明Cr⁶⁺、Hg的污染较为严重；运用地积累指数法评价底积物中重金属的污染程度，选用潜在生态危害指数法评价表层沉积物的生态危害程度，并对两种方法进行了比较，其结果表明了Hg和Cd的污染较为严重。通过上面的综合研究，结合龙王塘的水环境条件，分析了研究区内人工湖塘重金属在水体、底积物以及在这两者之间的的迁移转化，并分析了底积物中重金属释放对水质所造成的影响。提出了人工湖塘重金属污染控制对策和治理措施，为有关部门建立防治湖塘系统重金属污染的措施和决策提供科学依据。更多还原

【Abstract】 Not only the continual development of ecnomic but also health and survival ofhuman being have serious effected by environment pollution, expecilaiiy the waterresource. But the artificial lake-ponds are smaller than natural lake and river, pepollestudy them fewly. As the number of artificial lake-ponds are more and more, andthem have ralation with people, so the studing is important to pepolle.The paper chooses the artificial lake-ponds as the research object in theCheng-du economic zone （LongWang lake-pool in Zhongjiang）. Firstly the sampleof water and sediment are gathered, secondly content of heavy metals isanalyzed, thirdly the distribution state of heavy metal （Pb, Zn, Cu, Cd, Hg, As） arestudied, and then the situation of heavy metals pollution in the water and the columnsediments are evaluated. Base on the above working the transportation andconversion model of heavy metals.The heavy metals in the water have no certain correlation, and the heavy metalsin sediments have better correlation.This paper evaluates water quality by using the single pollution index andsynthetic index. The result shows that Cr⁶⁺, Hg polluted it moer seriously. Themethods of index of geoaccumulation and index of potential ecological risk are usedto assess the degree of heavy metals in sediments. And the two kinds of methods arecompared. The result shows that Hg and Cd polluted it moer seriously.Base on the synthesis analysis above, the paper district the transportation andconversion mode of heavy metal of water and sediment in the artificial lake-pool, and analysis that the heavy metals releasing from the sediment of has influence onthe water.According to researching the pollution source of heavy metal-elements, thispaper puts forward control policies and prevention measures for heavy metalpollution of the artificial lake-pounds, and offers scientific evidences for correlateddepartments preventing lake-ponds ecosystem from heavy metal polluting.更多还原