Techniques and systems for neutralizing discharge waters from ballast and/or cooling water biocidal treatment and disinfection systems are provided. The systems utilize oxidation reduction potential control to regulate the dechlorination of a biocidal agent to allowable discharge levels in ship buoyancy systems and ship cooling water systems.

A system for watercraft decontamination includes a substantially water-tight vessel sized and shaped to accommodate a watercraft, the vessel containing water and including a structure adapted to facilitate disposition of the watercraft in the vessel such that the a rear portion and transom of the watercraft that are normally submerged in watercraft use are submerged in the water. The system further includes a water heating system operatively connected to the substantially water-tight vessel, so as to heat the water from the vessel, and a water circulation system operatively connected to the substantially water-tight vessel and the water heating system and adapted to circulate water between the water heating system and the substantially water-tight vessel. The water heating system is sized and configured to maintain a temperature of the water in the substantially water-tight vessel at a temperature of between approximately 100° Fahrenheit (38° Celsius) and approximately 110° Fahrenheit (43 degrees Celsius).

A system and a method are for heat treatment of water of a vessel outside a fixed installation of the vessel. The water includes ballast water of the vessel and/or waste water from hull cleaning of the vessel. The system includes a system inlet; a system outlet; a heat application section; and a heat treatment piping system. A heat recovering section includes two parts for exchanging heat. The heat treatment piping system couples the system inlet to the system outlet via: one of the parts of the heat recovering section, the heat application section and the other part of the heat recovering section. The system does not form part of a fixed installation of the vessel.

A water treatment device including a first hydrocyclone and a biocidal fluid injector is described. The first hydrocyclone has an internal space, a water inlet for supplying water into the internal space, a base outlet for discharging at least a part of the water, and an apex outlet. The biocidal fluid injector is configured to inject a biocidal fluid into the internal space for eliminating organisms present in the water. The biocidal fluid injector is positioned such that a pressure within the injected biocidal fluid is lower than a head pressure of the first hydrocyclone.

Techniques and systems for neutralizing discharge waters from ballast and/or cooling water biocidal treatment and disinfection systems are provided. The systems utilize, inter alia, oxidation reduction potential control to regulate the dechlorination of an electrocatalytically generated biocidal agent to allowable discharge levels in ship buoyancy systems and ship cooling water systems

Techniques and systems for neutralizing discharge waters from ballast and/or cooling water biocidal treatment and disinfection systems are provided. The systems utilize, inter alia, oxidation reduction potential control to regulate the dechlorination of an electrocatalytically generated biocidal agent to allowable discharge levels in ship buoyancy systems and ship cooling water systems

A bilge pump system for removing residual fluid from a vessel surface, includes at least one collection unit having a collection base with a collection inlet and a collection outlet, and a pump having a pump inlet flow-connected by at least one tube to the collection outlet. A discharge tube is flow-connected to the pump outlet, wherein the collection inlet comprises at least one opening on a bottom face of the collection base arranged to be on the vessel surface. A sponge is arranged within the opening of the collection base and in liquid communication with the vessel surface. The sponge can be fitted into place by lips or lugs protruding from the collection base.

The present invention relates to a ballast water treatment system including an air compressor for compressing air; an air receiver tank for receiving the compressed air from the air compressor and storing the compressed air; an oxygen generator for generating oxygen from the air supplied from the air receiver tank; an oxygen receiver tank for storing the oxygen supplied from the oxygen generator; an ozone generator for generating ozone from the oxygen supplied from the oxygen receiver tank; a ballast water pump for pumping ballast water; an inflow line for transferring the ballast water from the ballast water pump; a ballast water tank for receiving the ballast water from the inflow line and storing the ballast water; and an ozone injector for injecting the ozone into the ballast water of the inflow line.

Heat treatment system and methods to decontaminate ballast fluid includes ballast tank(s) each having a temperature sensor. A heat source transfers heat to ballast fluid when circulated therethrough. Diverter valves provide selective direction of fluid flow to either the onboard heat source or external auxiliary heat source when connected. A pump moves ballast fluid between the ballast tank(s) and the heat source, recirculating ballast fluid for iterative heating. The temperature sensor provides ballast fluid temperature information in the ballast tank(s). Recirculation is stopped when ballast fluid meets predetermined ballast temperature conditions. A display provides decontamination status to an operator. A control unit monitors all sensors, valves and pumps to coordinate the performance of the heat treatment process and provide history report confirming decontamination.

A defeat resistant ballast filtration system for a recreational boat includes a pump to pump water into a ballast tank. The system also includes a filter having an inlet in fluid communication with an outlet of the pump and an outlet of the filter is in fluid communication with an inlet port of the ballast tank. In addition, the system includes a pressure sensor that is configured to measure an upstream pressure at the inlet of the filter and to measure a downstream pressure at the outlet of the filter to determine a pressure differential. The system includes an electronic control unit (ECU) configured to determine when the pressure differential is not within a predetermined range, and in response to not being within the pre-determined range, the ECU is configured to make the pump inoperable to pump the water into the ballast tank.