An Experimental Basic Study of Water Purification Function due to Spit in Small Estuary

J. Ocean Eng. Technol. 2007;21(3):8-15.

Park, Sang-Kil;Kim, Byung-Dal;Jeong, Seong-Il;

Dept. of Civil Engineering, Pusan National University;Dept. of Civil Engineering, Pusan National University;Dept. of Civil Engineering, Pusan National University;

하구에 형성된 소규모 모래톱의 수질정화 기능에 관한 기초적 연구

박상길;김병달;정성일;

부산대학교 토목공학과;부산대학교 토목공학과;부산대학교 토목공학과;

Keywords: Purification of water quality, Density flow, Distribution of concentration, Width of sand spit, Influx prevention of salt wedge

핵심용어: 수질정화, 밀오류 유동, 농도 분포, 하구사주의 폭, 염수쐐기 침입방지

Abstract

This study is intended to examine the relationship between the magnitude of sand spit in the estuary of the stream and improvement of the quality of water that flaws into the sea, by means of hydraulic experimentation. In order to determine the effect of improvements of water quality when river flow is stagnant, the estuary flows into the sea through the small sand spit, and a two-dimensional physical model experiment was carried out. Distribution of concentration was decreased in response to an increase in length of sand spit and time. The experimental results are compared with theoretical results, based on the solution of the equation. Also, there are functions of influx prevention of salt wedge and purification of pollution water due to sand spit in small estuary.