Abstract
In this study, two objectives were determined. One is to investigate the situation of Escherichia coli (E. coli) efflux around the field in which cow dung was heaped. And the other is to consider conservation strategy for E. coli efflux. Based on the experimental results, E. coli and coliform bacteria were observed from bottom muds. In addition, more E. coli and coliform bacteria survived in sedimentation tank. On the other hands, as a results of model experiment of sedimentation tank, E. coli and coliform bacteria were eliminated by alkaline filter. Therefore, it was considered that E. coli and coliform bacteria may be released with bottom muds. Moreover, it was concluded that sedimentation tank with high alkaline filter material is applicable to eliminate E. coli.
