The Mechanism Study On Circulation Of Phosphorus In Simulated Wetlands

"Utilize the ecosystem method processing waste water" is an important means that can make use of the water resources sustaining,as well as it is the key question that mankind development harmonious with nature.The rule of phosphorus removed by small-scale simulated wetland system was studied combined with simulation in laboratory.Phosphorus distribution in soil,adsorption rule and adsorption capacity of phosphorus at the interface of water/soil ,the rule of macrophyte uptake and release phosphorus was studied systemically and quantificationally in the paper.Through our studies, the results provide the scientific information for making clearly that the biogeochemistry process of phosphorus in wetlands, as well as for using the wetland systems to remove the phosphorus which inflow the wetland. The results as follows:1.Through experiment analysis,we found out the three stages model of the density dropping of phosphorus, namely: slope lower stage, steep lower stage, steady lower stage.The model responses phosphorus removaling mainly take place at slop lower stage and steep lower stage,but the phosporus decrease slowly at steady lower stage.As such,we can take certain project measure to fully utilize first two stages , reduce utilizing the later stage in the engineering design.The phosphorus removal rate has the very nice relativity with the hydraulic residence time,2.The adsorption of phosphorus by the soil is an important mechanism, it has an...