350 results about "Ballast water treatment" patented technology

A ballast water treatment device which can meet the ballast water standard stipulated by IMO at low cost with certainty. Provided is a ballast water treatment device comprising: a filter unit (4) for filtering seawater to capture aquatic organisms; a bactericide supply unit (5) for supplying a bactericide to the filtered seawater; And Venturi tube (7), this tube is used for introducing the seawater that adds bactericide, and produces cavitation in seawater, thus has not only diffused bactericide but also kills or kills the aquatic organisms of seawater.

Ballast water treatment apparatus and methods for preventing foreign aquatic invasive species form entering marine ecological zones by translocation in ship's ballast water. The apparatus includes a housing, a filter member, and UV water treatment chambers. Methods include use of a ship's fire hydrant system for moving ballast water from the ship's ballast tanks into the apparatus for filtration and treatment. In-port service vessels and dock-side service vehicles are equipped with the treatment and filtration apparatus to provided in-port or dock-side ballast water treatment services. Related methods are also provided.

A method and system treat ballast-water with ozone without release of detrimental off-gas into the atmosphere.

A ballast water treatment device is provided with: a filter which is cylindrically disposed so as to surround an axis; a case which has an outer cylindrical part provided so as to surround the filter; a rotation mechanism which rotates the filter about the axis; a water-to-be-treated nozzle which discharges water to be treated to a filter outside region formed by the outer peripheral surface of the filter and the outer cylindrical part; a washing water nozzle which discharges washing water toward the outer peripheral surface of the filter; a filtrate water flow path through which filtrate water transmitted through the filter is led from the inside region of the filter to the outside of the case; and a drainage flow path through which drainage water not transmitted through the filter is drained from the filter outside region to the outside of the case.

Provided is a system for treatment of ballast water used in a ship. More particularly, the ballast water treatment system of the present invention comprises: a filtering unit which filters the ballast water taken into a ship; an ultraviolet treatment unit for sterilizing the ballast water filtered by the filtering unit by using ultraviolet rays; and a control unit for controlling operations of the filtering unit and the ultraviolet treatment unit. The filtering unit includes a body having an inlet and an outlet, a filter for filtering the ballast water flowing along the inside of the body, an automatic washing unit for washing off foreign substances from the filter, and a pressure sensor for measuring pressures at the inlet and the outlet.; The ultraviolet treatment unit includes a body having an inlet and an outlet, an ultraviolet lamp for irradiating ultraviolet rays to the ballast water flowing along the inside of the body, a sleeve washing unit for removing foreign substances from the sleeve surrounding the ultraviolet lamp, an ultraviolet intensity meter for measuring the intensity of ultraviolet rays irradiated from the ultraviolet lamp, and a temperature sensor for measuring the temperature of the inside of the body. The present invention enables effective treatment of ballast water with less cost, prevents harmful substances or secondary contamination, prevents the inside of a ballast water tank from being polluted, and enables automatic washing of the apparatus even during operation.

Embodiments of the present invention relate to a system and method for efficient removal of sulfur oxides (SOx), nitrogen oxides (NOx) and particulate matter (PM) contained in an exhaust gas generated from fuel combustion and efficient treatment of water containing microorganizms (e.g. ballast water).