滇池流域花卉蔬菜废弃物对湖泊水质影响的模拟研究

选择流域内6种代表性的蔬菜、花卉秸秆,研究其对滇池水质的影响。结果表明：在相同水平的秸秆投加量下,TN、TP负荷量在秸秆投入水中约45d和30d左右均达到最大值,花卉秸秆在水体中TN、TP的总释放量明显高于蔬菜秸秆;水体TN、TP含量与秸秆投加量均成显著正相关。花卉、蔬菜秸秆进入滇池水后的最大潜在污染负荷量分别为：花卉秸秆的TN污染负荷为54.11g/kg,TP污染负荷为23.19g/kg;蔬菜秸秆的TN污染负荷为41.16g/kg,TP污染负荷为13.56g/kg。随意弃置堆放的花卉蔬菜秸秆对滇池水体可能存在的潜在面源污染负荷TN、TP极大值分别为12815.43 t和5290.51 t。

Simulation Study of Impacts on Water Quality from Wastes of Flowers and Vegetables in Dianchi Lake Watershed

Six kinds of typical straws including vegetables and flowers are selected to research the impacts on water quality in Dianchi lake.The results indicate that the loads of TN and TP reach the most value after 30 to 40 days with the same weight of straws of different kinds of straw.The release volumes of TN and TP from flower straw are higher than that of vegetable straw obviously.There is distinctive positive correlation between the adding weight and the content of TN and TP.The most potential pollution loads of TN and TP from the flower straws are 54.11g/kg and 23.19 g/kg respectively,the loads of TN and TP from the vegetable straws are 41.16 g/kg and 13.56 g/kg respectively.The most potential values of TN and TP from straws discarded and piled up anywhere are 12815.43t and 5290.51t in Dianch lake watershed.