METHOD FOR COLLECTING AND FURTHER REDUCING PHOSPHORUS BY KIDNEY-INSPIRATION IN SLOPE CATCHMENT AREA OF PHOSPHORUS-RICH AREA

摘要

The present disclosure provides a method for collecting and further reducing phosphorus by kidney-inspiration in a slope catchment area of a phosphorus-rich area. The method includes the following steps: analyzing suspended solids, total phosphorus, dissolved phosphorus, and total nitrogen in the surface runoff of the phosphorus-rich area through the hydrometeorological assay report; determining the amount of fillers and plants required based on the rainfall and the concentration of relevant non-point source pollutants; determining the scale of the desilting and filtration system based on the obtained rainfall and suspended solids content; designing the size of the catchment/drainage ditch according to the rainfall; the runoff and hydraulic parameters such as hydraulic retention time; hydraulic load; flow rate; and flow velocity. The present disclosure mainly solves the problem of the loss of nitrogen and phosphorus output from the mountainous phosphorus-rich area. In order to prevent and control the loss of nitrogen and phosphorus, the earth-rock engineering and the biological engineering are combined into a micro-ditch shunting/infiltration system and a drainage/confluence system; so as to eliminate the pollutants in the catchment area in situ. The present disclosure is applied for removing non-point source pollutants such as total suspended solids (SS), phosphorus (P), nitrogen (N) in the runoff of the mountainous phosphorus-rich areas.