昆承湖水流水质计算分析  

CALCULATION AND ANALYSIS OF THE FLOW-POLLUTANT OF THE KUNCHENG LAKE

作　　者：秦毅[1,2] 李瑞杰[1,2] 朱文谨[1,2] 曹晶晶[1,2] 

机构地区：[1]河海大学海岸灾害及防护教育部重点实验室,江苏南京210098 [2]河海大学环境海洋实验室,江苏南京210098

出　　处：《海洋湖沼通报》2009年第2期7-13,共7页Transactions of Oceanology and Limnology

基　　金：国家自然科学基金项目(50339010)资助

摘　　要：在模拟昆承湖水流流场的基础上,模拟化学需氧量(CODMn)在湖水中的扩散情况;同时,利用昆承湖实测资料和水质的浓度场计算结果,得到其枯季环境容量。可以看出,昆承湖的流速较小,且方向由西北流向东南,可能是受长江径流和湖底西北高东南低的地形特征影响;从昆承湖的CODMn浓度实测值和计算值中,可以看出小于其水环境质量标准限值。这将进一步为实现常熟市湖泊水环境质量的不断提高、生态状况的持续改善与科学管理提供依据。Based on the calculating results of the flow field of the Kuncheng Lake the diffusion of the chemical oxygen demand （CODMn） in the lake is simulated. And by utilizing the observed data and the calculating results of the water quality concentration field of the lake the water environmental capacity in the dry season is achieved. From the results, it is shown that the velocity of the lake is small and the direction is from the northwest to the southeast as the topographic form is the northwest higher than the southeast. Both the observed and the computed results of the CODMn concentration show that they are lower than the standard limit value of COD emission concentration. The results will provide the advice to improve the water environmental quality of the lake in Changshu City, the ecological regime and scientific management of the lake.

关 键 词：流场 化学需氧量 浓度场 扩散 环境容量 

分 类 号：P343.3[天文地球—水文科学] X37[天文地球—地球物理学]