Abstract: A solar boat for easy collection of spilled oil and garbage of the present disclosure includes a cabin unit, a boat body consisting of a pair of ship bottoms having a structure that is symmetrical left and right and spaced apart below the cabin unit, a solar panel unit provided above the cabin unit and configured to convert solar energy into electrical energy, a collection and transfer unit provided between the pair of ship bottoms, driven by the electric energy supplied from the solar panel unit, and configured to collect spilled oil and garbage into the inside of the boat body, a garbage storage unit, and a spilled oil storage unit, wherein the collection and transfer unit comprises a rotating conveyor belt, and an oil adsorption member and a collection member that are attached to and detached from the conveyor belt, and the solar boat for easy collection of spilled oil and garbage of the present disclosure has an effect of having excellent work efficiency by simultaneously including an oil adsorption membe

Abstract: A system for reducing total dissolved solids in wastewater can include a vertical reactor that can include a flexible sheet material, where the flexible sheet material can be configured to facilitate the growth and attachment of an algal biofilm. The vertical reactor can include a shaft, where the shaft can be associated with and can support the flexible sheet material, and a drive motor, where the drive motor can be coupled with the shaft such that the flexible sheet material can be selectively actuated. The system can include a fluid reservoir containing a portion of wastewater through which the flexible sheet material is configured to pass as well as a stressor operably configured to stimulate the algae to produce an extracellular polymeric substance. A method of reducing total dissolved solids in wastewater includes moving an algal biofilm through the wastewater and moving the algal biofilm through a gas.

Abstract: The present invention relates to a multipurpose tool that is configured to collect seaweed and other debris from the edges of a body of water and from shorelines. The tool has an elongated handle having an ergonomic grip, a head portion, a plurality of tines extending from the head portion, and a removably attached net-like filter. Each tine has an elongated length with a downwardly extending distal portion and is supported by a curved brace, wherein the curved brace extends laterally across the tines for providing mechanical support to the tines. The tines are oriented in a tapered manner having less spacing between the tines near the head portion and more spacing between the tines at the distal end which allows the width of the tines to be larger at the distal end than near the head portion.

Abstract: Surface water, such as stormwater, is contained in a pond, or other containment having primary semi-isolated treatment areas constructed, or designated therein, which are suitable for establishing ecological communities for treatment of water within the containment. Water for treatment is induced to flow through the semi-isolated areas and the ecological communities therein for treating the water, such as by bio-filtering, breakdown and bioremediation of water-soluble or hydrocarbon-based contaminants and inhibition of the proliferation of waterborne pathogens. The treated water is then discharged from the semi-isolated areas, such as for use downstream. Discharge of the treated water from the primary semi-isolated treatment areas, as well as the use of pump systems, induces the flow of water through the semi-isolated areas and ecological communities therein to effect the treatment.

Abstract: Methods, systems and/or apparatus related to the manufacture and use of biodigesters are disclosed. Moreover, techniques for the manufacture of reactors whose final shape increases the lifespan of the biodigester, as well as modular techniques for the manufacture of the reactors, are included.

Abstract: Disclosed herein are methods and systems for achieving degradation of ethers.

Abstract: An apparatus to lift liquid from a reservoir of liquid and aerate the liquid. A downwardly opening enclosure has an inlet for liquid to flow from a reservoir into the enclosure. The enclosure includes a channel for the liquid to flow upward. An inner cone within an outer cone forms a gas chamber connected to an external gas compressor. Holes in the gas chamber walls allow the gas to flow into the channel and aerate the liquid which is returned to the reservoir.

Abstract: An in-situ purification island structure and the construction method thereof, which refers to the field of sewage treatment technology. The in-situ purification island structure comprises the upstream purification island main body and the downstream purification island main body, in which the upstream purification island main body comprises the first base backfill layer, the first lower layer, the first hydrophobic layer, the first water permeable layer and the first upper layer. The first ecological bags are set around the surface of the first base backfill layer. The first lower layer has center formed with a lower layer backfill transitional zone. The first hydrophobic layer has center formed with a hydrophobic layer backfill transitional zone. It has a good natural purifying effect on the sewage, saves the investment and cost, no limitation on the applications, the capacity and efficiency of the purifying is high, and saves the resource.

Abstract: The removable dewatering device is adapted for use in a retention basin, and filters debris from water passing there through. The present invention has an inner filter and an outer filter. The current conventional process for cleaning a retention basin filter device of debris is time consuming and arduous. Usually, retention basins must be completely drained in order to clean the filtration devices. The present invention is removed then cleaned and maintained while the retention basin is full of water, and requires considerably less effort and expense for maintenance and cleaning.

Abstract: A screen decanter for decanting liquid from a reservoir, comprising at least one rack comprising screens and baffles forming the sides of a cavity; a frame attached to the screens and baffles and providing a barrier so that liquid cannot pass from outside into the cavity without passing through the screens; a patterned perforated drain pipe inside the cavity and leading to an opening through which liquids may drain out from the cavity. The pattern of the openings counteracts the hydrostatic head within the rack such that flow through the screens is uniform at all depths of immersion in the liquid reservoir. Preferably, the screens have a porosity of about 50 micrometers.

Abstract: A method and system are disclosed for total degassing (CH4+CO2) and density-reducing treatment of dense Lake Kivu deepwater. The invention allows hyper-efficient oxyfuel power generation with return flow water reinjection density-matched at or above ˜150 m without necessity to admix biozone (<80 m) water. This increases the CH4 resource and deflates the gas-rich deepwater layer over time, making Lake Kivu safe against a catastrophe threatening up to 2 million lives. Deepwater from the Main Resource Zone (MRZ, ˜480 m to ˜260 m) is de-densified, then reinjected above the Potential Resource Zone (PRZ, ˜260 m to ˜180 m) within the Intermediate Zone (IZ, ˜180 m to ˜80 m), avoiding wasteful resource dilution of the MRZ or PRZ reserves, and allowing methane extraction from the PRZ and IZ.

Abstract: The present invention relates to a method and apparatus for removing organic substances, nitrogen, and phosphorus from highly concentrated waste water, which includes the steps of: stirring organic waste water; mixing the waste water with an added neutralizer; supplying a flocculant to the mixture to flocculate sludge; and separating sludge and water by pneumatic dehydration, thereby continuously removing organic substances, nitrogen, and phosphorus from waste water.

Abstract: Provided is foreign-object offshore processing system, including foreign-object inflow prevention devices configured to prevent inflow of foreign object into water intake and provided at interval. Each device includes: collecting pontoon serving as inlet of foreign object and provided to float on sea surface of pool defined by curtain wall, the pool being for drawing cooling sea water from sea toward water intake; bottom net spreading toward sea bottom on upstream side of water intake channel in triangular shape with collecting pontoon as vertex; longitudinal net fixed to two floating chains in suspended manner to spread out in surface area of sea, the two floating chains extending on sea surface from collecting pontoon in correspondence with two sides extending from vertex of triangular shape forming bottom net; and lateral net spreading between bottom net and at least portion of longitudinal net, wherein horizontal net cover covers interval between adjacent devices.

Abstract: A self-cleaning screen includes a rotatable drum made of mesh material and an inlet pipe extending through a front end of the drum. A flotation structure supports the drum with the inlet pipe and the lower part of the drum submerged during use. A cleaning spray system located within the drum receives cleaning water through a hollow shaft supporting a rear end of the drum. Spray nozzles located within an upper part of the drum above the water level direct the cleaning water radially outward to dislodge debris from the screen. The front end of the drum includes an annular ring and a rubber seal extending radially inwardly from the annular ring to engage the inlet pipe. A drive belt extends around the annular ring to rotate the drum. A plurality of rollers engage a surface of the annular ring to support the drum for rotation about a horizontal axis.

Abstract: An air-powered water circulation system for ponds, lakes, municipal water tanks, and other bodies of water having a draft tube extending along and about a vertical axis between upper and lower end portions and supported by a flotation arrangement with the upper end portion slightly below the water surface. A pneumatic, air flow arrangement is then provided to supply pressurized air from an aft pump to a plurality of submerged air pipes positioned within the draft tube below the upper end portion thereof and extending inwardly from a submerged manifold toward the interior of the draft tube. In operation, pressurized air is supplied from the air pump through an air delivery conduit to the submerged air manifold and into the submerged air pipes where it is discharged as air bubbles through series of discharge holes extending along the pipes to create an overall circulation pattern in the body of water.

Abstract: The invention relates to a facility for converting water power into mechanical or electrical energy, including at least one hydraulic turbine, a water reservoir (R), and a pipe (5) for supplying the turbine with water (E) from the water reservoir. The facility also includes a device (200) submerged in the water reservoir and suitable for imposing an ascending movement on a water flow (E0) moving in the water reservoir (R) towards the opening (51) of the supply pipe (5), and a gas-collecting means (400), arranged above a portion (V200) of the device (200) in which the ascending movement of the water flow (E0) takes place.

Abstract: In a device and a process for purifying water which is contaminated with sulphate ions and heavy metal ions, the water is collected in a water reservoir and a substance having basic activity in water is fed to the water reservoir in such a manner that a precipitant having heavy metal ions is precipitated from the water, wherein at least a subquantity of water is taken off from the water reservoir and is separated into pure water which is substantially freed from sulphate ions and heavy metal ions and dirty water which is enriched with sulphate ions and heavy metal ions. The dirty water is at least in part recirculated to the water reservoir, as a result of which a concentration of sulphate ions in the water reservoir is achieved such that a precipitant having sulphate ions is precipitated from the water.

Abstract: A lagoon batch wastewater treatment system for a wastewater treatment lagoon wherein a containment tank expands and contracts during a sewage treatment process reducing erosion of the berm or bank of the lagoon.

Abstract: The inventive subject matter provides apparatus, systems and methods by which one can safely and effectively store fluids in undersea environments. Fluid is stored in a flexible bladder that is at least partially enclosed in a vessel. The bladder is coupled to a support, which supports the weight of the bladder with the aid of a support driver. A sensor may be used to monitor the position of the support, allowing determination of the volume of the bladder.

Abstract: Systems and methods for treatment of wastewater in waste processing ponds and other enclosed bodies of water are provided. An aerator are configured to include a first set of concentric air hoses disposed at a first position between the water outflow lip and the water intake, the first set of concentric air hoses being in fluid communication with an air inlet disposed at a position on the upper float chassis above the surface level of the water; and a second set of concentric air hoses disposed at a second position between the water first set of concentric air hoses and the water intake, the second set of concentric air hoses being in fluid communication with the air inlet, wherein the first set of concentric air hoses and the second set of concentric air hoses emit jets of air bubbles into the water column between the water intake and the water outflow lip.

Abstract: A water circulation pump pre-filter unit (PFU). The PFU is submerged and provides structure to camouflage the system to give a natural and aesthetic look. The PFU comprises at least two cleaning systems: (1) biological cleaning mechanism; and (2) an internal self-cleaning mechanism. Specifically, the PFU comprises several filtering surfaces that form a repository for pond debris on which fish and other aquatic creatures feed, i.e., the biological cleaning mechanism. These filtering surfaces of the PFU also provide a protective barrier that prevents large debris from entering the circulation pump. The internal self-cleaning mechanism is a spray wash water source mechanism used to clean the PFU without removing the PFU or fish from the pond or entering the water. Together these features improve the quality of the water in the pond and extend the life of a pump.

Abstract: Disclosed an aerobic system for decomposition of aqueous organic waste, which comprises at least a first processing container including sides, an upper opening, a substantially horizontal floor, an inlet, an outlet, at least one channel arranged at the floor having an upwardly opening mouth, a ventilating pipe extending above the mouth, and a pump connected to the pipe and arranged to provide a supply of a gas to the ventilating pipe.

Abstract: A collection device for aquatic life and debris for a traveling water screen. The collection device allows sharing of water provided from a high pressure nozzle while shielding aquatic life from a high pressure spray produced by the high pressure nozzle. The collection device enables separate collection of items exposed to a high pressure spray and items protected from a high pressure spray while reducing water costs. The collection device includes a first compartment for collecting aquatic life collected by a water screen and a second compartment for collecting debris collected by the water screen. A shield dissipates or blocks a high pressure spray directed into the second compartment from entering the first compartment. A filter allows fluid to flow from the second compartment into the first compartment while blocking aquatic life in the first compartment from entering the second compartment.

Abstract: A device for collecting and separating liquids, preferably liquefied gas such as LNG, the device having a first container having a bottom wall with a first tubular discharge pipe passing therethrough and opening out into a first storage tank; a second container contained inside said first container, comprising a bottom wall above the level of said first discharge pipe(s), and a top side wall including at least one drain orifice in its base communicating with a lateral passage, and a bottom side wall extending to below the level of the top end of the first discharge pipe, and a said lateral passage between the side walls of the two containers; and a liquid collector duct opening out into the second container, and a second discharge pipe extending from above second container and opening out into a second LNG storage tank.

Abstract: A fluid drainage system configured for draining a basin impounding fluid and sediment, solids or the like of varying density and turbidity. The system includes a first conduit and a second conduit within or adjacent to the first conduit to form a fluid receiving chamber between the first and second conduits, each conduit having apertures therethrough, with the apertures of the first and second conduits being sized and arranged relative to one another and so configured as to preferentially discharge fluid from the top of a basin, thus providing flow conditions which inhibit the entry of sediment into the system so as to maximize the retention of sediment within the basin and reduce turbidity and Total Suspended Sediment in the discharged fluid.

Abstract: A system for processing fluids comprising a fluid reservoir configured to contain a liquid. A float valve coupled to the fluid reservoir and configured to operate a fill valve. A condensation chamber. A thermal barrier disposed between the condensation chamber and the fluid reservoir. A first heat exchanger disposed within the fluid reservoir. A condensation unit disposed in the condensation chamber. A compressor coupled to the condensation unit. A second heat exchanger disposed within the fluid reservoir and coupled to the compressor. An expansion valve coupled to the second heat exchanger and the condensation unit, the expansion valve configured to receive the compressed coolant from the second heat exchanger and to expand the compressed coolant into the condensation unit.

Abstract: A mobile HEB and TEP mitigation device includes a mobile body capable of movement within or upon a body of water. Located within the mobile body is a hydrodynamic separation system which includes a water inlet, a hydrodynamic separation unit and a collection tank. The hydrodynamic separation unit includes two outputs, one for a clean stream output line containing clean water and arranged to re-circulate the clean water, and another for a concentrate stream output line, the concentrate stream output line configured to place concentrated water containing potentially harmful bio-organic materials into the collection tank. Also included on the mobile body is a power source and an engine/steering unit, wherein the steering portion of the engine/steering unit provides a capacity to move the mobile body in an intended direction. The mitigation device may also be used as an embedded part of an on-shore arrangement.

Abstract: Provided are an apparatus and a method for river water purification using a treatment soil layer and a permeable filtering medium layer. The river water purification apparatus includes a treatment soil layer and a permeable filtering medium layer which are sequentially and alternately stacked. The treatment soil layer includes a plurality of unit soil layers which are arranged at intervals. A reservoir part which stores a predetermined amount of river water and supplies the river water to an inside of the unit soil layer is provided in an upper end part of the unit soil layer. The permeable filtering medium layer has a higher hydraulic conductivity than that of the treatment soil layer. The river water purification apparatus increases a treatment flux of river water regardless of a coefficient of water permeability of soil and effectively removes nitrogen, phosphorus and nutrient salts by stably forming an anaerobic condition.

Abstract: A system-engineering installations for water- and energy-recycling in an aqueous system, either in or near a city, and/or in a pre-existing or a new city park, includes one by an utility company to collect carbon emissions wherein the carbon dioxide is produced by burning of high-carbon fuels or lime, one by an utility company to treat waste-water and discharge treated waste-water, a series of water-conditioners, properly space to keep the mixture of the emissions and the waste-water treatment discharges slightly acidic, a small lake or large pond as aerial-bioreactor with a sufficient depth so that the surface layer is alkaline to breed cyanobacteria, with the CO2 coming up from dissolved carbon emission and the nutrients coming up from sewage-treatment discharges in the main body below the surface layer.

Abstract: The invention relates to a filter for fluids, in particular water, having a filter surface and a rotary spray arm contained in said filter, said arm conducting a flushing medium against the filter surface. To achieve an increase in the throughput capacity of the filter and to improve the flushing of the filter surface, the filter is equipped with a fluid-proof drum motor, which drives at least one spray arm.

Abstract: Disclosed is a water treatment apparatus for treating Lake Okeechobee water. The treatment apparatus operates on a continuous flow of water which is subjected to hydrodynamic waves, acoustic ultrasonic waves in combination with injected ozone and electrolysis. The treatment system provides a cost efficient and environmentally friendly process for cleaning contaminated water that is directed into estuaries, lagoons, intracoastal waterway, everglades, and the ocean. Treatment includes addressing various levels of contaminants such as aerobic bacteria, often called a green slime that produces a bio-film. The apparatus can be mounted on a vessel to permit targeting of algae blooms.

Abstract: A self-cleaning screen includes a rotatable drum made of mesh material and an inlet pipe extending through a front end of the drum. A flotation structure supports the drum with the inlet pipe and the lower part of the drum submerged during use. A cleaning spray system located within the drum receives cleaning water through a hollow shaft supporting a rear end of the drum. Spray nozzles located within an upper part of the drum above the water level direct the cleaning water radially outward to dislodge debris from the screen. The front end of the drum includes an annular ring and a rubber seal extending radially inwardly from the annular ring to engage the inlet pipe. A drive belt extends around the annular ring to rotate the drum. A plurality of rollers engage an outer surface of the annular ring to support the drum for rotation about a horizontal axis.

Abstract: A floating cell with a floating macrophyte filter that can be installed in a chamber containing a volume of fluid to be filtered. The cell has: a layer with a floating macrophyte filter between a perimeter and a centre of the island; supporting means with peripheral structural means for defining a periphery; internal structural means for defining a framework; a central node; peripheral connecting means; internal connecting means; central flotation means and peripheral flotation means.

Abstract: An anaerobic lagoon wastewater treatment system, which includes a plurality of wastewater treatment zones. The treatment zones are either formed by providing a plurality of separate lagoons or by providing one or more partitioning elements within one lagoon. One or more treatment zones may also be provided in the form of a tank. The first wastewater treatment zone in the direction of wastewater flow has a smaller volume than the second wastewater treatment zone. Further, the first wastewater treatment zone achieves a significant reduction in fat, oil and grease removal, as well as in total suspended solids removal, but only a modest reduction in biological oxygen demand. An effluent from the first wastewater treatment zone is mixed with an effluent from the second wastewater treatment zone such that a predetermined ratio of carbon to nitrogen is maintained within the mixture of first and second effluents.

Abstract: Compact and mobile equipment and filtering system for potabilization of polluted water having a device and system for treating, disinfecting and potabilizing polluted water, employed as a water treatment station; the potable water stored in a service tank, maintaining the water for immediate use or for backwashing.

Abstract: The disclosed apparatus for extracting material from liquid comprises a transport member comprising at least one continuous loop configured to pass through a continuous orbit. The material adheres to at least a portion of the continuous loop and a scraping member urges against a portion of the continuous loop to remove at least some of the material. The apparatus can be a harvester that includes a frame. A first conveyor drum for engaging the transport member can be supported at the first end of the frame. A second conveyor drum can be supported adjacent the second end of the frame and also engage the transport member. The continuous loop can extend between the first conveyor drum and the second conveyor drum and frictionally engage at least a portion of each of the respective outer surfaces the drums.

Abstract: A fluid drainage system configured for draining a basin impounding fluid and sediment, solids or the like of varying density and turbidity. The system includes a first conduit and a second conduit within or adjacent to the first conduit to form a fluid receiving chamber between the first and second conduits, each conduit having apertures therethrough, with the apertures of the first and second conduits being sized and arranged relative to one another and so configured as to preferentially discharge fluid from the top of a basin, thus providing flow conditions which inhibit the entry of sediment into the system so as to maximize the retention of sediment within the basin and reduce turbidity and Total Suspended Sediment in the discharged fluid.

Abstract: A low cost method and system for treating water, which will be used in an industrial process, is provided. A system of the invention generally includes at least one containing means, at least one coordination means, at least one chemical application means, at least one mobile suction means, and at least one filtration means. The coordination means can control the necessary processes depending on the system needs (e.g., water quality or purity). The method and system of the invention purifies the water and eliminates suspended solids without the need of filtering the totality of the water volume, but only filtering a small fraction of up to 200 times less than the flow filtered by a conventional water treatment filtration system.

Abstract: A screen intake apparatus for a water intake system uses a cleaning system to clean one or more screen intakes. To clean debris from a screen, pipes in the interior of the screen receive pumped liquid (e.g., water or incompressible liquid) from a pump. Outlets, such as apertures or nozzles, on the pipes then direct the pumped liquid into the interior of the screen. One or more valves can vary, agitate, or pulse the flow of pumped fluid and/or can selectively deliver the pumped liquid to the pipes to remove collected debris from the exterior of the screen. A heater of the system can also heat the pumped liquid for delivery to the pipes to remove or prevent ice formation on the screen.

Abstract: System and methods for remediating a slurry pond are disclosed herein. A method includes distributing a material over a surface of the slurry pond, wherein the slurry pond includes residues from a plant operation. A method also includes placing a load on the material, wherein the load causes the material to sink below a level of a supernatant but to remain above a layer of sludge in the slurry pond.

Abstract: Disclosed herein are systems for removing particulate matter from a fluid, comprising a particle functionalized by attachment of at least one activating group or amine functional group, wherein the modified particle complexes with the particulate matter within the fluid to form a removable complex therein. The particulate matter has preferably been contacted, complexed or reacted with a tethering agent. The system is particularly advantageous to removing particulate matter from a tailing solution.

Abstract: A method, apparatus, and system for removing contaminants from a body of surface water. The method and apparatus may include tubular members such as hollow-fiber components. The tubular members have a reactive gas diffused through wall of the member. Contaminants in the water can be removed when the reactive gas reacts with bacteria on the tubular member.

Abstract: A circulation system for bodies of water. In one set of embodiments for larger bodies of water, modified horizontal plate designs are provided at the entrance of the draft hose. The plate designs have sections that pivot downwardly as the flotation platform and depending draft hose are rapidly raised in high wave conditions to let the water escape downwardly out of the hose. Adaptations to the floats for the elongated arms of the platform are also made to essentially eliminate the creation of any damaging torques on them from high waves. Another set of embodiments are particularly adapted for smaller systems in municipal water tanks for thorough mixing of the water and treatment to kill undesirable ammonia oxidizing bacteria and prevent or at least inhibit their return.

Abstract: The invention relates to environment protection and can be used for cleaning industrial wastewater, liquidation of oil spills resulted from ecological disasters. The invention provides a reliable device for cleaning water from oil nano- and micro-particles and other impurities. Such device comprises a pump pumping a liquid flow of water with impurities particles. The pump is connected to a water dynamic purification unit (WDPU) with a channel including —a first type section with variable cross-section decreasing downstream, —a minimal passage cross-section, —a second type section with variable cross-section increasing downstream. The first type section includes a zone with a plurality of protrusions and deepenings. One protrusion has a maximal height greater than the heights of other protrusions. Preferable sizes and relations of channel elements are disclosed. The WDPU uses cavitation that allows decomposing oil particles, and reduction of the flow speed for commencement of cavitation and sedimentation time.

Abstract: A floating streambed comprising a circulation pump having an inlet hose or pipe, an inlet hose or pipe depth adjuster, and one or more treatment channels comprised of permeable matrix. The floating streambed floats on a water body. Water enters the inlet hose or pipe from the water body and is pumped by the circulation pump into the treatment channels. The treatment channels are comprised of permeable matrix, and water entering the treatment channels flows both horizontally through the treatment channel and into the water body and also vertically downward through the permeable matrix of the treatment channels.

Abstract: A screen intake apparatus has a concrete platform resting on a water source floor. A screen intake anchors on the platform and forms a half cylinder thereon. A barrier at one end of the platform in divides the flow of water. The screen intake has a half-cylindrical body and half-cylindrical screens. Transition walls in the screen intake divide the body's hollow and the screens' interiors, and at least one flow modifier communicates the interior with the hollow. These flow modifiers also form a half cylinder with the platform. A manifold in the screens receives a supply of air to clear debris. Forming a half-cylinder, the screen intake on the platform can have a much lower profile for the water source than the normal cylindrical screens, which require half of its diameter in clearance above and below.

Abstract: A system and method reducing pollution in a body of water using biological processes is provided. The system includes a hydraulic dam generated by an induced downwelling of effluent water from a plurality of water circulating devices. A series of linearly arranged treatment sub-systems are disposed upstream of the hydraulic dam. The treatment sub-systems include a water sterilization sub-system for neutralizing harmful and undesirable micro-organisms using an ultrasonic energy generating unit. The ultrasonic energy generated, is of a frequency that disrupts cellular structures in targeted micro-organisms.

Abstract: A method and apparatus for supporting a screen. The apparatus comprising a cylindrical screen for submerging in a fluid, the screen having an inlet pipe for connecting to a piping system, filter members, a first end, a second and a support structure. The support structure is one or more helical members which traverse the screen.

Abstract: The present invention is generally directed to a system, device and method for removing a layer of sediment formed on the bottom of a pond. A submersible vacuum unit associated with in-line import and export sections made from at least 2 inch diameter tubing is supported by a single ski or wheel that is in contact with the pond bottom surface, with a flexible hose connected to the export and directed outside the pond for disposal or filtering of suctioned water. In certain embodiments, leaf /debris bagging mechanisms or mulching mechanisms are employed to facilitate removal of large debris from pond bottoms, while fine silt material is contained in a region and suctioned off the bottom surface.

Abstract: A plurality of buildings each have a plurality of primary devices adapted to dispense potable water and a plurality of secondary devices adapted to dispense salt water. A primary feed line and branch feed lines convey the potable water to the primary devices. A secondary feed line and secondary branch feed lines convey the salt water to the secondary devices.