The present disclosure relates to a biocide generating system for inhibiting bio-fouling within a water system of a watercraft. The water system is configured to draw water from a body of water on which the watercraft is supported. The biocide generating system includes an electrode arrangement adapted to be incorporated as part of an electrolytic cell through which the water of the water system flows. The water system is configured such that biocide treated water also flows to one or more components of the water system that are positioned upstream of the electrode arrangement.

A floating-oil recovery device includes: a bubble-curtain generation mechanism configured to discharge air into water to generate a bubble curtain in the water so as to increase a thickness of a film of floating oil while regulating spread of the floating oil; and an ejector configured to recover an oil-water mixed fluid having the floating oil and the water mixed with each other by jetting high-velocity water toward the film of floating oil enclosed with the bubble curtain to destroy the film of floating oil.

A portable small water turbine with activated carbon water filter is described that has material available to conduct the removal of the ionic surfactants of polluted water from seas and rivers. The portable small water turbine is placed inside a mini boat that is remote controlled. The mini boat (similar to adult/kids RC toy boat) can be dropped-off and picked up from the sea or rivers by a drone. The activated carbon water filter tube contains carbon pads composed of mantle peridotite carbon mineralization based activated carbon.

A subsea fluid processing system includes an electric motor that rotates a shaft on which impellers are fixedly mounted. Diffusors are static and fixed to the pump housing. The electric motor includes a rotor surrounding the shaft and a stator that is filled with a dielectric stator fluid. The stator is sealed or “canned.” The inner surface of the stator which faces the rotor is canned with a canning non-metallic material. The motor, as well as bearings for the rotating shaft are lubricated and cooled with a fluid that in some cases is taken from the process fluid and some alternative source. Alternative sources include: MEG, methanol, treated seawater and untreated seawater.

Automated systems and methods for treating wastewater or effluent are provided. In some embodiments, the methods include: using a set of sensors to measure one or more properties of untreated wastewater or effluent; performing at least one potential chemical treatment and at least one potential mechanical treatment on a sample of the untreated wastewater or effluent, wherein the potential chemical and mechanical treatments are selected based on the properties of the untreated wastewater or effluent; using a set of sensors to measure one or more properties of the treated sample; based at least in part on the data regarding the properties of the treated sample, using an information handling system to select at least one chemical treatment and at least one mechanical treatment; and using the information handling system to control one or more components of a chemical treatment subsystem and a mechanical treatment subsystem to perform the selected chemical and mechanical treatments on the untreated wastewater or effluent to produce treated water.

Diagnostics systems and methods for on-board raw water systems of watercraft. Flow or pressure changes are detected at one or more locations along a flow path of the onboard raw water system. A fault is diagnosed based on a type of flow change or pressure change detected. An alert is issued regarding the fault and/or a remedial action is suggested for correcting the fault.

A reactor system may comprise a housing; and a condensation catalyst layer within the housing comprising a condensation catalyst comprised of at least one of a base-substituted zeolite, a stannous salt, or a phosphonitrile chloride. The condensation catalyst layer may be configured to catalyze a condensation reaction of a plurality of silane diols in water flowing through the housing into a plurality of siloxanes.

An apparatus for filtering water has a valve head and a filtration/purification canister removably mountable thereon. Connecting the canister to the valve head automatically opens a check valve in the valve head to permit water to flow from the valve head into and through the canister, and then back to and through the valve head to an outlet port. Disconnecting the canister from the valve head automatically closes the check valve, stopping the flow of water. A bypass valve is provided in the valve head to permit a sanitizing solution to flow through the valve head and along the lines of the water distribution system to sanitize the system, while bypassing the canister. The outlet port may be directly connected to an appliance that uses water, to eliminate possible contamination that may occur when water is brought indirectly from the outlet port to the appliance instead.

A method for the removal of at least one contaminant from an aqueous liquor or a gas, comprising: preparing a solution or slurry of a solid alkali reagent by supplying a solid alkali reagent into a pre-wetting chamber via a feed pipe; supplying a liquid via two or more liquid sidestreams, each through a liquid inlet positioned on a side wall of the chamber to allow the liquid sidestreams to wash an internal wall of a frusto-conical section of the chamber and flow, preferably tangentially onto the internal wall in a downward spiraling manner thereby forming a vortex, towards a fluid outlet of the chamber and to further wet the solid alkali reagent with the supplied liquid thereby forming a pre-wetted reagent; and flowing a stream though a conduit, thereby creating a suction by the eductor to draw the pre-wetted reagent out of the chamber fluid outlet and mixing it with the stream to form a slurry or solution; and directing the slurry or solution exiting the eductor to an aqueous liquor or gas treatment unit, removing at least a portion of the contaminant from the aqueous liquor or gas in the treatment unit.

The present invention relates to a process for clean sailing of marine ship, comprising steps of: a) scrubbing exhaust gas of engine with seawater to generate scrubbing seawater; b) disposing of the scrubbing seawater in an open loop operation mode, including neutralizing the scrubbing seawater in an open loop operation mode; and/or c) disposing of the scrubbing seawater in a closed loop operation mode, including: i) storing the scrubbing seawater in a storage container; and ii) neutralizing the scrubbing seawater in a closed loop operation mode. The present invention also relates to a ship. The purpose of the present invention is to maintain the unique advantages of economy and environmental protection of marine ships to fulfill the global regulations of the United Nations on ship sulfur limit while safe sailing is ensured.