抄録
In Osaka Bay reclamation has taken place in a variety of forms. Reclamation has made narrow water area where water dose not exchange. And large mount of waste water that discharged into such area decline water quality. On the other hand such area is very important place because people can come in contact with the sea.
We made study of environmental restoration technologies for such narrow water area. We made experiment on current control and water purification in Amagasaki canal and made restoration plan.