再生水补水的潮白河水环境特征及变化趋势研究

发布时间：2018-05-31 21:53

本文选题：再生水 + 富营养化　；参考：《中国地质大学(北京)》2015年硕士论文

【摘要】：本文以北京市再生水补水的潮白河(顺义段)为研究对象,通过对典型断面的水质、浮游生物、底栖动物的监测和资料分析,探讨水质、水生态的时空分布和变化规律。本文研究结论如下：根据2013年各项指标监测数据,得到如下结论：(1)水质分析结果,各典型监测断面氨氮浓度完全达标,总磷、总氮、化学需氧量、生化需氧量均存在不同程度的超标现象。(2)浮游生物分析结果,各监测断面的优势种类基本为蓝藻门的种类,主要是微囊藻、鱼腥藻；各监测断面中原生动物和轮虫种类之和均多于枝角类和桡足类之和。表明该条河流水体中营养物质丰富,所受有机污染较重,反映出水体达到富营养化水平。(3)采用主成分分析方法统计分析2013年各典型监测断面的水质监测结果,发现2013年河流水质污染程度从重到轻排序为：彩虹桥四号桥河南村橡胶坝双兴桥减河进口,从上游至下游呈现污染程度逐渐加重的趋势。(4)采用SL 395-2007中的湖库营养状态评价方法评价个监测断面的营养状态,结论为：2013年整条河流都处于重度富营养状态。根据2008年、2009年、2013年各项指标监测结果,得到如下结论：(1)空间变化规律：从上游至下游各监测断面的pH、DO、CHla、CODCr、BOD5、均逐渐上升；NH3-N、TN、TP均逐渐下降；浮游动、植物的变化规律基本一致,浮游动物密度在双兴桥较低,四号桥、彩虹桥较高,河南村橡胶坝比四号桥、彩虹桥略低。(2)年际变化规律：各监测断面的pH逐年无明显变化；NH3-N在各监测断面都呈现出逐年下降的趋势；叶绿素a和化学需氧量呈现逐年上升的趋势；DO、TNTP在减河各监测断面呈现逐年下降趋势,在潮白河各监测断面呈现逐年上升趋势；五日生化需氧量在减河部分逐年无明显变化,潮白河部分呈现逐年上升的趋势。各典型监测断面的浮游植物密度随着年际呈现逐年上升的趋势,浮游动物密度2009年相对2008年有所上升,2013年相对2008年和2009年均有下降。(3)浮游生物的年季变化规律：各监测断面的浮游植物密度在双兴桥春、夏、秋三季没有明显变化,四号桥和彩虹桥是夏季最高,河南村橡胶坝是秋季最高；除了河南村橡胶坝以外的各监测断面的浮游动物密度均随着春、夏、秋季节呈现下降趋势,河南村橡胶坝处的浮游动物密度三个季节没有明显变化。
[Abstract]:In this paper, the Chaobai River (Shunyi section) of reclaimed water in Beijing is studied. Through the monitoring and data analysis of water quality, plankton and benthos in typical sections, the temporal and spatial distribution and variation law of water quality and aquatic ecology are discussed. The conclusions of this paper are as follows: according to the monitoring data of each index in 2013, the results of water quality analysis are as follows: the ammonia nitrogen concentration of typical monitoring sections is up to standard, total phosphorus, total nitrogen, chemical oxygen demand, total phosphorus, total nitrogen, chemical oxygen demand, The results of phytoplankton analysis showed that the dominant species in each monitoring section were the species of Cyanophyta, mainly microcystis and Anabaena. The sum of protozoa and rotifer species in each monitoring section was more than that of Cladocercus and copepod. The results show that the water body of the river is rich in nutrients and is seriously polluted by organic matter, which reflects that the water reaches eutrophication level. The principal component analysis (PCA) method is used to analyze the results of water quality monitoring of typical monitoring sections in 2013. It was found that the order of river water pollution in 2013 was as follows: No. 4 Bridge of Rainbow Bridge, Henan Village, Rubber Dam, Shuangxing Bridge, River imports, From upstream to downstream, the pollution increased gradually. 4) the nutrient status of a monitoring section was evaluated by the evaluation method of lake and reservoir nutrition in SL395-2007. The conclusion was that the whole river was in a severe eutrophication state in 2013. According to the monitoring results of the indexes in 2008, 2009 and 2013, the following conclusions were obtained: the pH of the monitored cross sections from upstream to downstream, the pH of DOCHLAA CODCrN BOD5, all gradually increased and decreased, and the phytoplankton, the variation law of plants were basically the same, and the changes of phytoplankton and phytoplankton were almost the same. The density of zooplankton is lower in Shuangxing Bridge, No. 4 Bridge, Rainbow Bridge is higher, and Hainan Village Rubber Dam Bridge No. 4, The annual variation rule of Rainbow Bridge is slightly lower. (2) the pH of each monitoring section has no obvious change year by year. The NH3-N of each monitoring section shows a decreasing trend year by year. Chlorophyll a and chemical oxygen demand (COD) showed an increasing trend year by year. DOA TNTP decreased year by year in all sections of river reduction, and increased year by year in each monitoring section of Chaobai River, and no obvious change was observed in the part of river reduction by 5 days. The Chaobai River part shows a rising trend year by year. The phytoplankton density of typical monitoring sections increased year by year. The density of zooplankton increased in 2009 compared with 2008, and decreased in 2013 compared with 2008 and 2009. The seasonal variation of phytoplankton was observed: the density of phytoplankton in Shuangxingqiao Spring, Summer and Autumn had no obvious change. No.4 Bridge and Rainbow Bridge are the highest in summer, and the rubber dam in Hainan Village is the highest in autumn. The density of zooplankton in all monitoring sections except the Rubber Dam in Hainan Village decreases with the spring, summer and autumn seasons. The density of zooplankton in the rubber dam of Hainan Village has no obvious change in three seasons.
【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X522

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