QUANTIFICATION OF MAXIMUM DENITRIFICATION POTENTIAL AS WATER PURIFICATION FUNCTION OF SANDBAR IN RIVER

Abstract

 In recent, the conservation and adjustment of sandbar landscape is pointed out as the goal of river environmental management. This study is focused on the denitrification of sand bar driven by subsurface water flow in aim to the quantification of water purification function in a river. Denitrification in the sand bar is mainly influenced by advection of subsurface water flow and reaction of microorganism according to the soil and environmental condition (potential) of each site. We proposed the new method for quantify the denitrification potential based on the field observation result which include morphological and hydronic parameters. An empirical formula which quantifies the potential according to landscape elements in sand bar was created by using the field data. Furthermore, it has become possible to compare the denitrification potential of each river by using our new method.