Floating Vessel of Seawater Treatment for Rehabilitation of Marine Environment

Abstract

The pollution and change in ecosystem of closed sea area are considered as important problems in the world . Remediation techniques of water and sediments are needed for the recovery of natural purification in closed sea area. In this study, applicability of the floating vessel of seawater treatment to remediation technique of water in closed sea area is examined. As a result , it was found that the suspended solid of 80% is removed and the decrement of COD in seawater is about 18% using treatment system on the floating vessel. In addition, the DO of treated seawater ranged constantly from 6.0 to 7.0 mg/l, independent of seawater before treatment. Therefore, using the floating vessel of seawater treatment, it is possible to improve the anoxic condition and transparency in closed sea area. Furthermore , this vessel is able to cope well with red tide.