沈砂池での浮遊土砂と富栄養化成分の流入出と削減に関する現地調査

概要

論文の詳細を見る
The prevention of suspended soil and eutrophic component runoff from an upland field has become important for water quality conservation. The purpose of this study was to find out inflow, outflow, and trap of suspended soil and eutrophic component in a sedimentation tank. For the purpose of this study, field observation was made using a real sedimentation tank in a small upland watershed to analyze water quality-concentration of suspended soil, nitrogen, and phosphorus-at the inlet and the outlet points of the sedimentation tank during a rainfall event. As a result, it was found that trap efficiency of suspended soil, total nitrogen, and total phosphorus was 70%, 87%, and 57%, respectively. High correlation between suspended soil and particulated eutrophic component was found to have contributed to the trap of eutrophic component. The research results indicate that a part of suspended soil, nitrogen, and phosphorus was trapped with the sedimentation tank.
日本雨水資源化システム学会の論文