A vessel has a compartment (34) for containing water, which compartment (34) has at least one opening (31) in a wall (30) thereof for allowing water to pass therethrough. The compartment (34) comprises an assembly (1) of a grating (10) and at least one anti-biofouling source (20), the grating (10) being positioned in the opening (31) for blocking items from passing through the opening (31) along with the water, and comprising a number of elements and spaces between the elements, and the anti-biofouling source (20) being configured to emit ultraviolet light during operation thereof for realizing anti-biofouling of at least a portion of the grating (10). At least one of the elements of the grating (10) is at least partially transparent to the ultraviolet light, enabling a design of the assembly (1) in which anti-biofouling of the entire grating (10) may be guaranteed.

An anti-fouling system (1) for use with a wet compartment (10) having at least one inlet opening (11) for allowing water to enter the compartment (10) is configured to receive and operate at least one anti-fouling source for emitting anti-fouling light in order to keep at least one surface (26) as present in the compartment (10) free from biofouling. The system (1) comprises a controller (50) for controlling operation of the at least one anti-fouling source (30), the controller (50) being configured to determine at least one operation parameter of the at least one anti-fouling source (30) in relation to at least one of at least one water-related parameter, at least one surface-related parameter and at least one opening-related parameter.

The ballast water and fish farm treatment system for circulating effluent water of a fish farm or a ship by filtering and resupplying the effluent water, the system including a heat exchange system to heat or cool the effluent water, a physical filtration unit to filter out impurities from the effluent water are discharged from the heat exchange system, and a chemical filtration unit to mix the effluent water discharged from the physical filtration unit with chlorine dioxide, wherein the effluent water discharged from the chemical filtration unit is resupplied to the fish farm or the ship. The ballast water and fish farm treatment system allows circulation water of the ship and fish farm to be reused after completely removing parasites, hazardous organisms, germs, and viruses from the circulation water using a combination of physical, chemical and physiological treatment techniques.

The present invention relates to a ballast water treatment system. The ballast water treatment system comprises: a filter and electrolysis unit for receiving ballast water from the outside, and filtering and electrolyzing the ballast water; a first sensor unit for measuring seawater characteristics of the ballast water passing through the filter and electrolysis unit; a control unit for determining a contamination level of the ballast water according to the measured seawater characteristic values so as to generate control signals for determining the strength of electrolysis and the input amount of chlorine dioxide; a chlorine dioxide generation unit for generating the chlorine dioxide; a UV/TiO.sub.2 system which includes a TiO.sub.2-coated plate, generates an OH radical through an interaction between ultraviolet rays and TiO.sub.2 so as to enable the OH radical to sterilize residual microorganisms included in the ballast water passing through the filter and electrolysis unit; an automatic neutralization treatment device which includes a neutralizing agent, receives a neutralizing agent discharge signal from the control unit, and neutralizes the ballast water passing through the filter and the electrolysis unit; and a second sensor unit for measuring a TRO concentration of the ballast water neutralized in the automatic neutralization treatment device and transferring the measurement result to the control unit, wherein the control unit generates a control signal for controlling an amount of the neutralizing agent discharged from the automatic neutralization treatment device according to the measurement result received from the second sensor unit. Thus, the sterilization efficiency for the ballast water satisfies the USCG standards during the ballasting step for the ballast water.

An exemplary embodiment provides a method of treating an environment (aquatic or land) to remediate an infestation of mollusks, either active or in hibernation, to remediate a mollusk infestation. The method includes the steps of: selecting an amount of a formulation (solid or liquid) comprising a saponin; and distributing this formulation in the environment having an infestation of mollusks. When the environment is land, the steps of the method may include distributing the formulation on the land, flooding the land, for example by irrigation or seasonal rains, to release the saponin that disperses in the water to thereby cause a concentration of saponin in the water for a time effective to remediate mollusks. When the environment is water, the formulation may be distributed into the water to cause a saponin concentration for an effective time to remediate mollusks.

An exemplary embodiment provides a method of treating an environment (aquatic or land) to remediate an infestation of mollusks, either active or in hibernation, to remediate a mollusk infestation. The method includes the steps of: selecting an amount of a formulation (solid or liquid) comprising a saponin; and distributing this formulation in the environment having an infestation of mollusks. When the environment is land, the steps of the method may include distributing the formulation on the land, flooding the land, for example by irrigation or seasonal rains, to release the saponin that disperses in the water to thereby cause a concentration of saponin in the water for a time effective to remediate mollusks. When the environment is water, the formulation may be distributed into the water to cause a saponin concentration for an effective time to remediate mollusks.

A multifunctional ship for the collection and recycling of ocean debris and the system thereof may include a hull; a detection device provided on the hull to detect ocean debris floating on the sea or deposited on the seabed; a collection device installed on the hull to collect the ocean debris detected by the detection device; a sorting device installed on the hull to sort the ocean debris collected by the collection device; a compressing device installed on the hull to compress the sorted ocean debris to compress and remove moisture and reduce the volume; a waste plastic recycling device installed on the hull to produce recycled oil by thermally decomposing the waste plastic compressed in the compressing device; a storage tank installed at the bottom of the hull to store the recycled oil produced; and a purifier for purifying wastewater generated in the process of producing recycled oil.

Disclosed are a configuration system and a method for configuring a ballast water treatment system for treating ballast water of one or more ballast tanks in a vessel. The ballast water treatment system is configured to circulate ballast water between a tank outlet and a tank inlet of a first ballast tank. The method includes obtaining structural parameters of the first ballast tank. These structural parameters include a compartment number parameter indicative of a number of compartments in the first ballast tank. Control data for the ballast water treatment system based on the structural parameters is then determined. The control data includes a first volume parameter indicative of a first ballast water volume to be circulated. The control data is provided to the ballast water treatment system.

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.

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.