开封市龙亭湖水体沉积物中N、P污染分析

Research of N、P Elements Pollution for Sediment in Dragon Pavilions Lake in Kaifeng Area

以龙亭湖西湖为研究对象,共采集到23个水体样品和23个沉积物样品,据此分析测定水体和沉积物中TN、TP、NH4-N、NO3-N、NO2-N、PO4等含量,并对N、P各种存在形态进行分析测定.通过对水体和沉积物污染状况,以及沉积物污染对上覆水体水质影响的研究表明:对照地表水国家标准GB-3838-2002氨氮含量标准,龙亭湖水体上覆水集中于1、2、3、4类,其中3类水所占比例最高;沉积物对上覆水体NH4-N、NO3-N起到一定程度的净化作用,却是NO2-N、PO4的储存库,是龙亭湖上覆水体的一个内在污染源.研究结果为龙亭湖水体污染治理提供重要的决策依据.

In this paper, the authors chose the dragon pavilions lake water as the research object, collected a total amount of 23 sediment samples and 23 kinds of water. According to the above analysis, it determinates the TN, TP, NH4-N, NO3-N, NO2-N and PO4 content of water and sediment, and the analysis the existence of N, P form. Through the studies of the water and sediment pollution condition, and sediment pollution on the overlying water impact, based on the National standard GB-3838-2002 surface water ammonia nitrogen content standard scientific basis that showed the overlying water body long focused on 1, 2, 3, 4 groups, of all the categories, the three categories are the highest proportion of water. However overlying water of sediment NHa-N, NO3-N plays a certain degree of purification, but it is repository ofNO3-N, PO4 in other word, it is one of the inner pollution sources of Dragon-Pavilions Lake. This thesis will provide a decision support, the scientific basis to lake water pollution management and the improvement of the quality of the lake water.