An embodiment provides a ballast water treatment system, including: a ballast pump; a backwash pump, wherein an outflow of the backwash pump is mechanically coupled to an outlet of the ballast pump; a treatment unit, wherein the treatment unit is located fluidly between the ballast pump and the backwash pump; wherein the ballast water treatment system has at least two modes, comprising: a ballast mode, wherein, during the ballast mode, the ballast pump pumps water through the ballast treatment system to a ballast tank, and a de-ballast mode, wherein, during the de-ballast mode, the backwash pump conveys backwash water to an outlet of the ballast pump. Other aspects are described and claimed.

A system and method for treating water containing at least one contaminant. The system and method include a water treatment module such as a reverse osmosis unit. An electrochemical contaminant detection system is positioned in the waste water stream of the water treatment module. The contaminant detection system includes a contaminant sensor and a water quality sensor module. The contaminant sensor measures the concentration of the contaminant in the waste water stream and the water quality sensor module measures one or more water quality parameters of the waste water stream. A processor uses an algorithm to determine the concentration of the contaminant in the feed water based on the measurements of the contaminant sensor and water quality sensor module.

An online antifouling ship ballast water treatment system includes a ballast water main pipeline, a ballast water branch pipeline, a dispensing pipeline, a filter on the ballast water main pipeline, an electrolysis unit on the ballast water branch pipeline, and a dispensing pump on the dispensing pipeline. Some of seawater introduced into the system is filtered by the filter and flows to the ballast water branch pipeline and the electrolysis unit, some of seawater electrolyzed by the electrolysis unit is reinjected to the filter through the dispensing pump and the dispensing pipeline after a ballast process is completed, and kept in the filter until a next ballast operation, so that growth and propagation of marine organisms in the filter can be inhibited by sodium hypochlorite contained in a TRO solution when a ballast pump stops working. The present invention also provides a ship ballast water treatment method.

A ballast water treatment system for producing treated seawater is described herein that includes: a reaction chamber, wherein the reaction chamber is located within a vessel; an inlet for introducing chlorine dioxide into the reaction chamber, wherein the reaction chamber is equipped with one or more turbulence inducing devices configured for inducing turbulence, wherein the turbulence inducing device is a stationary device; a second inlet for the introduction of seawater, into the reaction chamber; and an outlet from the reaction chamber, wherein the treated seawater is returned to a storage facility within the vessel or is returned to the sea. A method of treating ballast seawater for producing treated seawater is also described that includes: providing a reaction chamber, wherein the reaction chamber is located within a vessel; providing an inlet for introducing chlorine dioxide into the reaction chamber, wherein the reaction chamber is equipped with one or more turbulence inducing devices configured for inducing turbulence, wherein the turbulence inducing device is a stationary device; providing a second inlet for the introduction of seawater, into the reaction chamber; providing an outlet from the reaction chamber; and treating the seawater with chlorine dioxide, wherein the treated seawater is returned to a storage facility within the vessel or is returned to the sea.

A ballast water treatment apparatus and a ballast water treatment system having a ballast water treatment apparatus are provided. The ballast water treatment apparatus includes a ballast water transport line configured to transport ballast water between a first location and a second location, the transported ballast water being passed through at least one injector, and a plasma generation device configured to be fed with a feed gas optionally comprising oxygen, and configured to generate a feed gas plasma by a streamer type discharge in a discharge area to provide a treated gas at a treated-gas outlet. The injector includes a liquid passage having an area constructed such as to increase a velocity of the passed-through water in a region of increased velocity, and an injector gas inlet provided in the region of increased velocity. The treated-gas outlet is in gaseous connection with the injector gas inlet.

A filter arrangement includes: a chamber including a chamber inlet for unfiltered liquid, a chamber outlet for filtered liquid and a wall arranged to keep the unfiltered liquid and the filtered liquid separated, a filter element having a longitudinal extension arranged inside of the chamber, wherein the filter element includes a semi-permeable filtration wall including a folded filter arranged in a zig-zag configuration between an inner perforated cylinder and an outer perforated cylinder and an internally located back-washing arrangement. The back-washing arrangement includes: an elongated and hollow body having a longitudinal extension, which is substantially parallel to the longitudinal extension of the filter element, a mechanism configured to drive the body in a rotational and/or an axial movement, a plurality of nozzles arranged in fluid communication with a cavity inside of the body, the plurality of nozzles projecting laterally from the body such that a distal end of each of the plurality of nozzles is arranged in close proximity to the inner perforated cylinder and an outlet arranged in fluid communication with the cavity of the elongated and hollow body and wherein the plurality of nozzles are arranged parallel to each other along a straight line on the body such that they all project in the same direction.

A marine waste water dump control system for noncommercial nonmetallic or fiberglass boats that provides a system and process for automatically monitoring the time, exact location, and quantity of blackwater, greywater or bilgewater (marine water waste) is dumped from such a water vessel and for requesting and receiving approval or disapproval for dumping marine water waste into restricted or unrestricted waters, including oil water and the like. The instant invention has an MS (Automatic Information System) or comparable communication system that operates at approximately 160 MHz for determining the exact distance from shore and communicating with marine authorities, such as the Coast Guard, before activating the dump control system and communication. The dump control system of the instant invention automatically stores all dumping related information in memory for access by authorities at any time in the event a vessel does not include an AIS or a working AIS. The instant invention also determines from existing shoreline beacons and a triangulation method the exact distance a water vessel is from the shore. The system may be applied to any and all holding tanks on a marine vessel containing pollutants such as black water, gray water, bilge water, oil water and the like.

A marine waste water dump control system for noncommercial nonmetallic or fiberglass boats that provides a system and process for automatically monitoring the time, exact location, and quantity of blackwater, greywater or bilgewater (marine water waste) is dumped from such a water vessel and for requesting and receiving approval or disapproval for dumping marine water waste into restricted or unrestricted waters, including oil water and the like. The instant invention has an MS (Automatic Information System) or comparable communication system that operates at approximately 160 MHz for determining the exact distance from shore and communicating with marine authorities, such as the Coast Guard, before activating the dump control system and communication. The dump control system of the instant invention automatically stores all dumping related information in memory for access by authorities at any time in the event a vessel does not include an AIS or a working AIS. The instant invention also determines from existing shoreline beacons and a triangulation method the exact distance a water vessel is from the shore. The system may be applied to any and all holding tanks on a marine vessel containing pollutants such as black water, gray water, bilge water, oil water and the like.

An object of the present invention is to reduce the installation load, or the maintenance or the management load of a measurement device for ballast water that is measured for plural times, and to simplify the linkage between ballast water process equipment and a ballast water measurement device that are installed in a ship. A measurement device (2, 52) includes, a first measuring part (6-1, 54-1) that measures water quality of a first ballast water, with referring to ballast water before processing as the first ballast water and ballast water after the processing as a second ballast water, a second measuring part (6-2, 54-2) that measures water quality of the second ballast water, a reagent supply part (8) that is connected to the first measuring part and the second measuring part, and that supplies a reagent from one reagent container to the first measuring part and the second measuring part, a water discharge part (7) that is connected to the first measuring part and the second measuring part, and that discharges the first ballast water and the second ballast water each after the measurement, and a housing (4) that accommodates therein the first measuring part, the second measuring part, the reagent supply part, and the water discharge part.

Overflow protection and monitoring devices capable of coupling to a drainage pan and may include: a drainage line; a base, the base including an input port; a dry section; and a wet section, the input port capable of coupling to the drainage pan; a base cover, the base cover removably coupled to the base, the base cover including a base cover output port capable of coupling to the drainage line; a fluid displacement mechanism located in the wet section, the fluid displacement mechanism including a fluid displacement mechanism output port; a fluid detection mechanism located in the wet section; and a base attachment, the base attachment coupled to the fluid displacement mechanism output port and the base cover output port, the base attachment including an air relief port and back-flow preventer; a control unit capable of energizing the fluid displacement mechanism upon receiving a signal from the fluid detection mechanism.