洪泽湖西部湖滨水质污染特征分析

Pollution characteristics of water in west Hongze Lake

根据2010年洪泽湖西部湖滨的常规监测资料,对洪泽湖西部湖滨主要污染物因子的时空分布特征及其水质污染特征进行了初步研究。结果表明,洪泽湖西部湖滨总体水质为Ⅴ类,处于重污染水平,TP、TN是影响洪泽湖西部湖滨水质的主要污染物。氨氮、TN、COD Mn在时空分布上均无显著差异,TP、COD有显著差异,枯水期时空分异性大于平水期、丰水期。各河口Chl-a浓度普遍高于敞水区。虽然湖水中TP、TN的浓度已达到较高的水平,但没有达到全面富营养化的程度。

The spatial - temporal changes of the major pollution factors and water pollution character- istics were analyzed according to the investigations of west Hongze Lake in 2010. In general , the water quality of west Hongze Lake was classified as V, the heavy pollution level. Total nitrogen and total phosphorus were the major pollutants that went beyond the water quality standard limits. Ammonia nitrogen, total nitrogen and CODMn showed no significant difference in terms of spatial and seasonal distribution, except total phosphorus and COD which had remarkable different distribution especially in dry season. Generally concentration of Chlorophyll - a in estuary was higher than that of open water area. In spite of the high level of total nitrogen and total phosphorus, the west Hongze Lake had not been covered by full eutrophication..-