泰达再生水景观河道磷沉积试验

通过实验室模拟试验及现场观测研究了泰达再生水景观河道底泥TP和PO4-P（磷酸盐以P计）沉积特性，分析了再生水中的TP和PO4-P沉积到河道底泥的原因，得出了水溶液的11P和PO4-P随时间变化的沉积规律、结果显示，以再生水作为水源时，水体中11P和PO4-P是沉积的；同时在实验室模拟试验研究中，TP和PO4-P沉积量达到最大值时所需时间为1d，TP和PO4-P的最大沉积量分别为95．15％和96．56％；实际观测研究中11P和PO4-P沉积量达到最大值所需时间比室内试验所需时间长，约为7．5d，11P和PO4-的最大沉积量小于实验室试验的沉积量，分别为85．10％和87．43％．

Experiment Research of Phosphate Deposition in TEDA Reuse Water & Landscape River

The deposition effects of the total phosphorous(TP) and phosphate(PO_(4)-P)in TEDA Reuse Water & Landscape River are studied,and the sedimentation reason of TP,PO_(4)-P are analyzed,then the settling curve of TP and PO_(4)-P is drawn in recycled water which is changed with time.When the reuse water is used as the water source,TP and PO_(4)-P deposit bottom silt.In laboratory simulation test,the needed time of the max deposition ratio for TP and PO_(4)-P is 1 day,meanwhile,the max deposition ratio of TP and PO_(4)-P are 95.15%,96.56% respectively.According to practical observation,the needed time of the deposition ratio is 7.5 days,longer for TP and PO_(4)-P to reach max deposition level than in the laboratory test,and the deposition ratio of the TP and PO_(4)-P is 85.10% and 87.43% respectively, lower than in the laboratory test.