文思湖底泥TP释放规律模拟研究

摘要

[ Objective]The study aimed to analyze the release of total phosphorous from Wensi Lake sediment into water. [ Method] Though simulation experiments in a laboratory, we studied the effects of various environmental factors like water-soil ratio, water temperature, pH, disturbance and dissolved oxygen (DO) on TP release from Wensi Lake sediment. [Result] The higher the water-soil ratio, the less TP released from the sediment; temperature increase sped up TP release from the sediment; when pH of overlying water was 6, the amount of released TP was the lowest; disturbing the overlying water accelerate TP release from the sediment; the lower the DO content, the larger the released TP. [Conclusion] The research provided scientific references for controlling the pollution of Wensi Lake.%[目的]研究文思湖底泥TP的释放规律.[方法]采用室内模拟试验,研究环境因子(水土比、温度、pH、扰动强度、供气量)对文思湖底泥释放总磷(TP)的影响.[结果]水土比越大,底泥释放TP的量越小；水温升高能加速底泥中磷的释放；上覆水pH =6时底泥TP释放量最低；扰动上覆水体会加快磷的释放；溶解氧( DO)较低时,底泥TP释放量更大.[结论]该研究为文思湖的污染治理提供了科学依据.