基于济宁市污染源现状分析的南四湖流域水质改善对策研究

以济宁市污染源普查数据和南四湖湖区监测结果为基础，对湖区富营养化状态和济宁市各类污染源进行了分析．2011年与2006年相比，湖区COD，氨氮，TP，TN浓度分别下降33％，53％，29％和52％，湖区水质明显改善，主要水质指标中，TP问题仍比较突出．济宁市各类污染源COD，氨氮，TP，TN排放总量分别为15．45万吨，2．59万吨，0．18万吨，3．26万吨．农业面源污染源成为首要污染源，TP，TN占所有污染源排放比例最大；生活污染源c0D排放量最大，占各类污染源COD排放总量的45．76％；工业点源污染得到治理，但对输水水质安全的影响不容忽视．提出了改善水质的合理对策和保障南水北调东线输水水质安全的合理措施．

Countermeasure to Improve Water Quality in Nansi Lake Based on the Analysis of Pollution Source Current Situation in Jining City

Based on pollution source census in Jining and monitoring data of Nansi Lake, this paper in- vestigated all kinds of pollution sources in Jining and eutrophic state of Nansi Lake. Compared 2011 to 2006, the concentration of the COD NH3N TN and TP in Nansi Lake decreased by 33%,53%,29% and 52%. The quality of lake water was significantly improved,TP was still relatively prominent in the main indices.The amount of COD NH3N TN and TP,which were from all pollution sources,were 15.45 million t, 2.59 million t,0.18 million t,3.26 million t. The results indicated that the agricultural non-point pollution sources become the first pollution source,TN and TP were mainly from them. CODcr was mainly from life pollution source,which accounted for 45.76% of total CODcr. The pollution from point pollution sources was reduce, but its effects on water quality and security should not be ignored.Countermeasures to improve east route of south-to-north water transfer water quality and security were put forward.