WO2005123598A1 - Appareil de traitement de l'eau - Google Patents

Appareil de traitement de l'eau Download PDF

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Publication number
WO2005123598A1
WO2005123598A1 PCT/AU2005/000878 AU2005000878W WO2005123598A1 WO 2005123598 A1 WO2005123598 A1 WO 2005123598A1 AU 2005000878 W AU2005000878 W AU 2005000878W WO 2005123598 A1 WO2005123598 A1 WO 2005123598A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
treatment apparatus
chamber
water treatment
chambers
Prior art date
Application number
PCT/AU2005/000878
Other languages
English (en)
Inventor
Ian Geoffrey Cummins
Original Assignee
Cumminscorp Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AU2004903375A external-priority patent/AU2004903375A0/en
Application filed by Cumminscorp Limited filed Critical Cumminscorp Limited
Priority to PCT/AU2005/001259 priority Critical patent/WO2006021028A1/fr
Publication of WO2005123598A1 publication Critical patent/WO2005123598A1/fr
Priority to CA 2611284 priority patent/CA2611284A1/fr
Priority to EP20060741146 priority patent/EP1926688A1/fr
Priority to KR20077030948A priority patent/KR20080039351A/ko
Priority to JP2008513865A priority patent/JP2008542008A/ja
Priority to EA200702662A priority patent/EA200702662A1/ru
Priority to US11/921,220 priority patent/US20090127176A1/en
Priority to AU2006254716A priority patent/AU2006254716A1/en
Priority to PCT/AU2006/000729 priority patent/WO2006128229A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0027—Floating sedimentation devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0006—Settling tanks provided with means for cleaning and maintenance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0012—Settling tanks making use of filters, e.g. by floating layers of particulate material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/003—Sedimentation tanks provided with a plurality of compartments separated by a partition wall
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
    • B01D21/0042—Baffles or guide plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
    • B01D21/0066—Settling tanks provided with contact surfaces, e.g. baffles, particles with a meandering flow pattern of liquid or solid particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/2433—Discharge mechanisms for floating particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/14—Flotation machines
    • B03D1/24—Pneumatic
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/24—Treatment of water, waste water, or sewage by flotation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/14—Flotation machines
    • B03D1/1412—Flotation machines with baffles, e.g. at the wall for redirecting settling solids
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/30—Treatment of water, waste water, or sewage by irradiation
    • C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/42—Nature of the water, waste water, sewage or sludge to be treated from bathing facilities, e.g. swimming pools
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/02—Fluid flow conditions
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/06—Aerobic processes using submerged filters
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/08—Aerobic processes using moving contact bodies
    • C02F3/085—Fluidized beds
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/30—Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy

Definitions

  • WATER TREATMENT APPARATUS Technical Field This invention relates to water treatment apparatus and in particular to apparatus for treating water for the purposes of purifying, cleaning or otherwise removing impurities or contaminants in the water.
  • the present invention is particularly but not exclusively suited to treating contaminated bodies of water, grey water, sewerage or any other contaminated water.
  • the present invention aims to provide water treatment apparatus which is particularly suited to use in treating and purifying water in a range of different applications.
  • Typical applications of the water treatment apparatus include applications for treating water in natural or artificial bodies of water such as lakes and dams, in aquaculture systems, aquariums, swimming pools and spas, water tanks as well as grey water containers, tanks or reservoirs, and sewerage tanks or any other effluent tank or reservoir.
  • the present invention provides water treatment apparatus for floating on a body of water to be treated, ⁇ n other aspects, the present invention provides a drum filter for water treatment apparatus. In another aspect, the present invention provides an ozone generator for use in water treatment apparatus.
  • water treatment apparatus comprising an inlet for water to be treated, at least one screen filter for filtering solids from said water passing, at least one ultraviolet treatment unit for exposing said water to ultraviolet light, and at least one foam fractionator unit and/or ozone treatment unit for exposing said water to bubbles of air and/or ozone, means for causing water to pass through said units and an outlet for treated water.
  • the water treatment apparatus may also include at least one biological filter unit.
  • the water treatment means may comprise a combination of two or more Of the above individual water treatment units.
  • the water treatment units may be arranged in any sequence between the inlet and outlet.
  • the term "water” as used herein includes contaminated water or any other water or liquid carrying impurities or solids as well as water carrying sewerage and grey water.
  • the water inlet is connected to the screen filter to supply water to the screen filter to remove solids from the water.
  • the screen filter suitably comprises a drum filter.
  • the drum filter suitably comprises a rotatable drum filter having a drum and a screen or mesh material on or about the periphery of the drum and means are provided for conveying water from the inlet to pass through the screen or mesh material.
  • Suitably means are provided for supporting and rotating the drum.
  • Such means may comprise motor- means for causing rotation of the drum.
  • the drum is driven in rotation by water Bowing into the drum.
  • the water inlet is connected to a supply pipe which extends into the interior of the drum.
  • the drum filter is suitably of the type disclosed in our aforementioned International patent application. Other forms of drum filter however may be employed.
  • Means may be provided for cleaning the screen or mesh material of the drum.
  • the means for cleaning the screen or mesh material may include means for spraying water and/or applying pressurized air onto the screen or mesh material.
  • Suitably means within the drum are provided for collecting materials cleaned or displaced from the screen or mesh material.
  • the means for collecting the materials may comprise a trough Or channel supported within the drum.
  • the trough or channel may be associated with the supply pipe to the drum.
  • the trough or channel may be formed on an upper side of the supply pipe.
  • the or each foam fractionator or separator unit suitably comprises a foam fractionator chamber and means are provided for supplying air to a lower portion of the chamber for bubbling through water therein to separate impurities such as dissolved organic material or particulate materials from the water and oxygenate the water.
  • Air may be supplied to one or more air blocks or air outlets in the lower portion of the chamber.
  • An inlet for water to be treated is suitably provided at the upper or lower end of the chamber.
  • An outlet from the chamber is suitably provided at the lower or upper end of the chamber.
  • Air for supply to the foam fractionator chamber is suitably provided by one or more air pumps.
  • the chamber of the foam fractionator unit suitably includes a funnel or trap member at or adjacent the upper level of water in the chamber for collecting, waste entrained in bubbles at the surface of the water.
  • the runnel or trap member is suitably connected to waste for example a waste line.
  • the funnel or trap member may be adjustably supported for height variations within the chamber of the foam fractionator.
  • the funnel or trap member may be supported by a float or floats at or adjacent the level of water in the foam fractionator chamber.
  • the ultraviolet treatment unit suitably includes an ultraviolet treatment chamber which houses at least -one ultraviolet lamp, The at least one ultraviolet lamp may be fixed in the ultraviolet treatment chamber. Alternatively float means may be provided to support the at least one ultraviolet lamp in water in the ultraviolet treatment chamber.
  • the ultraviolet treatment chamber in one form has an inlet at its lower end for receipt of water to be treated and an outlet at an upper end.
  • the inlets and outlets to and from the ultraviolet treatment unit may be positioned in alternative locations in the ultraviolet treatment chamber.
  • the inlet may be provided at the upper end of the chamber and outlet provided at a lower end of the chamber.
  • the at least one ozone treatment unit suitably includes an ozone treatment chamber.
  • One or more ozone reactors or generators may be provided for supplying ozone to water to be treated in the ozone treatment unit. Ozone from an ozone reactor/s or generator/s may be supplied to the lower end of the ozone treatment chamber to bubble upwardly through water in the ozone treatment chamber and suitably through water flowing downwardly in the ozone treatment chamber.
  • Ozone may be supplied to an air or gas block or other outlet submerged in the ozone treatment chamber.
  • the chamber of the- foam fractionator unit may comprise the ozone treatment chamber.
  • Water for treatment in the apparatus may be pumped to the inlet to the apparatus by one or more water pumps.
  • water for treatment may be supplied under the influence of gravity to the inlet to the apparatus.
  • Water for treatment in the apparatus may flow under the influence of gravity through the water treatment apparatus to the outlet.
  • the ozone treatment chambers and/or foam fractionator chambers and ultraviolet treatment chambers may be defined by a single tank or a series of tanks.
  • the water is caused to flow in a serpentine manner through the tank or tanks.
  • a single tank may be divided into a series of individual chambers to serve as ozone treatment chambers, foam fractionator chambers and/or ultraviolet treatment chambers .
  • the chambers may be formed by one or more baffles or walls in the tank.
  • the tank may be divided into separate chambers by a single baffle, lit one arrangement, the baffle defines a weir over which water flows from one chamber to the other chamber. Water may alternatively or additionally flow under or through a lower portion of the baffle for passage from one chamber to the next chamber.
  • the water treatment apparatus may include a plurality of ultraviolet treatment chambers and foam fractionator or separator chambers and/or ozone treatment chambers arranged in series.
  • the outlet of one ultraviolet treatment chamber may be connected to the inlet of a foam fractionator or separator chamber and/or ozone treatment chamber or vice versa.
  • the outlet of a foam fractionator chamber or ozone treatment chamber may be connected to the inlet of the adjacent ultraviolet treatment chamber.
  • a series of foam fractionator chambers and/or ozone treatment chambers and associated ultraviolet treatment chambers may be connected in this manner.
  • the respective chambers are arranged alternately so that water flowing therethrough may be treated differently in each chamber.
  • One or more ammonia and/or nitrate and/or phosphate and/or nitrite filters which comprise the biological filters may be provided between the drum or screen filter and the ultraviolet treatment chamber or chambers, ozone treatment chamber or chambers or foam fractionator chamber or chambers for removing ammonia and/or nitrates and/or phosphates and/or nitrites from the water being treated,
  • the one or more biological filters may comprise a tank or chamber beneath the screen filter.
  • the tank or chamber may include a biological filter media for supporting bacteria.
  • One or more trailing biological filters may alternatively or additionally be provided after the ultraviolet treatment chamber or chambers, ozone treatment chamber or chambers or foam fractionator chamber or chambers.
  • the trailing biological filters may include a tank having the one or more water outlets through which water may flow, suitably under the influence of gravity.
  • a screen filter may be provided at the trailing end of the water treatment apparatus.
  • the screen filter may be a drum filter of the above- described type.
  • the filter material of the screen filter at the outlet from the water treatment apparatus may be of a different mesh or aperture size from the screen filter at the inlet to the water treatment apparatus (where used).
  • the screen or drum filter is supported over a main chamber.
  • at least one or a series of further treatment chambers may be provided for treatment of water from the main chamber with the one or further chambers comprising an ultraviolet treatment chamber, a foam fractionator chamber and/or an ozone treatment chamber.
  • a series of further treatment chambers may be provided in respective tanks which are separated into respective treatment chambers.
  • a first chamber of the series of chambers may be provided adjacent the main chamber, the first chamber having an inlet for receipt of water to be treated and an outlet for treated water.
  • a first common baffle or wall may be provided between the main chamber and the first chamber.
  • the first baffle or wall may be arranged so that an inlet for water to the first chamber is provided at one end of the first baffle or wall.
  • the first baffle or wall may be arranged so that an inlet for water from the main chamber is provided under the first baffle or wall or through slots or openings in a lower portion of the first baffle or wall.
  • ⁇ or wall may be spaced above a floor of the chamber or series of chambers.
  • water from the main chamber may flow over the upper edge of the first baffle or wall or through apertures in the first baffle or wall adjacent the upper edge into the first chamber.
  • the main chamber may include means for exposing the water in the main chamber to ozone.
  • Ozone from an ozone source such as an ozone reactor/s or generator/s may be supplied to the lower end of the main chamber to bubble upwardly through that chamber.
  • Ozone may be supplied to an air or gas block submerged in the main chamber or through an outlet or outlets in the lower portion of the main chamber.
  • the main chamber may include means to slow the passage of water from the screen filter through the main chamber so that maximum exposure of the flowing water to ozone is achieved.
  • the first chamber may also include means for supplying bubbles of air to the chamber to assist is passage of water through the first chamber such as upwardly through the chamber and/or oxygenating the water.
  • the series of chambers may also include one or more further chambers to which water flowing therein is subject to exposure to ozone.
  • Respective baffles or walls may be provided between the respective chambers. The respective baffles or walls may be arranged so that an inlet for water to one chamber of the series of chambers is provided at one end of a baffle or wall. Alternatively the respective baffles or walls may be arranged so that an inlet for water from the one chamber is provided over a baffle or wall.
  • the upper portion or edge of the baffle or wall may be below the upper portion or edge of the previous baffle or wall so that the upper portion of the baffle or wall acts as a weir.
  • openings may be provided in the baffle or wall adjacent an upper portion thereof for the passage of water therethrough.
  • water may flow under a lower portion of a baffle or wall or through apertures adjacent a lower portion of the baffle or wall into the next chamber.
  • the chambers in which water is exposed to ozone comprise chambers in which water is flowing downwardly in the chamber with the ozone outlets being provided at lower portions of the chambers.
  • the chambers in which water is exposed to ozone may include a flow restricting medium such as a plurality of discrete elements or other flow resitricting means to increase the period that water in the chambers is expos ⁇ d to ozone.
  • One or more other chambers of the further chambers may include means to expose water therein to ultraviolet light.
  • one or more ultraviolet lamps are provided in the one or more other chambers.
  • a water outlet communicates with the last or trailing chamber of the series of chambers.
  • the last or trailing chamber may also include means to expose the water therein to ultraviolet light.
  • Such means may comprise one or more ultraviolet lamps as above.
  • the screen or drum filter and series of chambers are provided as a separate water treatment module or unit.
  • the water treatment module may include a main tank which defines the main chamber and the series of chambers may define ozone treatment chambers and/or ultraviolet light treatment chambers and/or foam fractionator chambers.
  • the main tank is divided by upright or substantially upright walls into the respective chambers.
  • the main chamber and further chambers are defined in separate tank part.
  • the tank parts however arc preferably integrally formed with each other.
  • Each tank part suitably includes opposite side walls and the side walls of adjacent tanks are joined at their upper ends, Preferably water flows from one tank part to the next tank part by passing over the joined upper ends of the walls.
  • the joined upper ends of the walls of the tank parts are lower than the joined upper ends of the downstream tank parts whereby the water will flow under the influence of gravity from one tank part to the next tank part over the joined upper ends of the adjacent walls.
  • Preferably downwardly directed channels are defined between the respective main tank parts.
  • Each tank part may be divided into a pair of chambers by an intermediate upright baffle in the tank part Water suitably flows in a serpentine manner through the water treatment module or unit by passing beneath or through a lower end of a baffle and over the joined upper ends of the tank part walls.
  • the present invention provides water treatment apparatus including a modular tank having a plurality of tank parts, a screen or drum filter for filtering water and associated with one tank part such that water filtered by said screen or drum filter passes into the one tank part, and means for subjecting water flowing through the other tank part or parts to ozone and/or ultraviolet light.
  • the tank and tank parts are suitably of the above described configuration.
  • the one tank part may carry a media for supporting bacteria for bacteriological treatment of water in the one tank part.
  • the water treatment apparatus or modules may be land based or may be arranged to be supported over a body of water to be treated.
  • the present invention thus provides in another preferred aspect, water treatment apparatus comprising a floatable structure for location in a body of water to be treated, said floatable structure carrying water treatment means for treating of said water, a water inlet to said water treatment means communicating with said body of water, and a water outlet for directing treated water back into said body of water.
  • the water treatment maybe water treatment apparatus or modules of the above described type.
  • the floatable structure comprises a vessel.
  • the vessel may typically have walls formed of lightweight concrete.
  • the vessel may be in the form of a hull having a bow and stern to facilitates its movement in the body of water.
  • the floatable structure may comprise a buoyant body or platform for location on a body of water to be treated, the buoyant body or platform carrying the water treatment means for treating of said water.
  • the buoyant body or platform may be of any configuration.
  • the platform may include floats.
  • the water treatment means includes a main chamber or tank over which a screen filter of the water treatment means is supported, the main chamber or tank being arranged at one end of the platform. Additional floats may be provided at the one end of the platform.
  • the floats may be provided on opposite sides of the water treatment means.
  • the water treatment means comprises a water treatment module including a plurality of tank parts separated by downwardly directed channels
  • transverse support arms may extend through the channels between respective tank parts to support the apparatus or module sitting in the nature of saddles on the support arms, opposite ends of which are supported by the opposite side floats. Opposite ends of the support arms may seat within transverse grooves in the floats.
  • the support arms may be part of a frame of the platform supported on floats.
  • the floats typically are plastic air containing floats but may be other forms of float. •
  • Water for supply to the floating water treatment apparatus or modules may be supplied by one or more pumps.
  • the pumps may be submergible pumps.
  • the pumps may be supplied with power from one or more batteries on the vessel, platform or buoyant body.
  • the battery or batteries may be solar charged.
  • the present invention provides water treatment apparatus of the above described type adapted for treating water in water collection or storage tanks and wherein the means for supplying water to the inlet to the water treatment apparatus comprises a submergible pump.
  • the submergible pump may be suspended from a float floating on water within the tank.
  • the pump may comprise an electric pump supplied with power from a power supply comprising a battery or batteries charged by solar cells or a solar panel. Power for the ultraviolet treatment chamber and/ or ozone generator may also be supplied with power from the power supply.
  • Water treated in the water treatment apparatus may be returned to the tank under the influence of gravity,
  • the water treatment apparatus is associated with a swimming or spa pool for treating water in the pool.
  • the water treatment apparatus may have its inlet connected through a pump to a surface cleaner of the walls and floor of the swimming or spa pool.
  • the present invention provides water treatment apparatus for treating sewerage using water treatment means of the above described type.
  • the present invention provides a filter drum for a drum filter assembly, said filter drum comprising a plurality of channels arranged at spaced apart circumferential locations about the axis of rotation of said drum and extending longitudinally relative to said axis of rotation, said channels being open on their outer radial sides, said open sides of said channels being provided with a filtering screen or mesh material.
  • a plurality of walls is provided internally of the drum between adjacent channels, the walls extending in a longitudinal direction relative to the axis of rotation of the drum.
  • the internal walls define the walls of adjacent channels.
  • the. drum is formed with the channels and end members integral.
  • the drum may be formed of plastics for example by rotational moulding.
  • Suitable means are provided for supporting and rotating the filter drum. Such means may comprise motor means for causing rotation of the drum.
  • the drum is driven in rotation by water flowing into the interior thereof.
  • One or more water outlets may be provided within the drum to cause rotation of the drum.
  • water from the water outlets acts against at least some of the longitudinally extending internal walls or rib ' s to effect rotation of the drum.
  • the water outlets are suitably provided in the water supply pipe to the drum filter.
  • the drum may comprise one or a pair of circular or annular end members between which the channels extend.
  • the . end members may be supported on rollers for supporting the drum for rotation about a horizontal axis.
  • the means for directing water into the drum suitably comprises a feed duct extending from the second chamber and longitudinally within the drum.
  • the feed duct may include generally radially extending duct members having outlets for directing water against the internal ribs or walls.
  • the means for catching or collecting the dislodged materials in any of the above described drum filters may comprise a trough or channel fixed relative to the drum.
  • the trough or channel may be supported to the filter drum so as to be substantially fixed relative to the filter drum.
  • the trough or channel may be suspended from at least one carriages mounted rotatably to the filter drum.
  • the at least one carriages may cooperate with an annular end member of the filter drum.
  • at least one of the annular end member defines an external circular tracks and the or each carriage is adapted to cooperate with a track.
  • a carriage suitably comprise at least one roller, preferably a grooved roller, for cooperation with a track.
  • the carriage is suitably arranged above the filter drum and suspension means may be provided for suspending the trough or channel from the carriage.
  • suspension means may be provided for suspending the trough or channel from the carriage.
  • respective carriages are supported on tracks at opposite ends of the drum.
  • the present invention provides an ozone generator, said ozone generator includes a hollow substantially sealed housing, an ultraviolet light source in said housing, said housing having an inlet and an outlet whereby oxygen flowing into said inlet is exposed to ultraviolet light and converted into ozone for exit through said outlet.
  • air containing oxygen is pumped into the housing.
  • the housing suitably has the inlet at one end and the outlet at the opposite end.
  • the housing suitably comp ⁇ ses a tubular housing and the ultraviolet light source comprises an elongated ultraviolet lamp which is supported coaxial ly within the housing.
  • the ozone generator described is particularly suited for use in the water treatment apparatus as described above, it may be used in other applications where a source of ozone is required.
  • Fig. 1 illustrates schematically in side view floating water treatment apparatus according to a first embodiment of the invention
  • Fig. 2 is a plan view of the apparatus of Fig. 1
  • Fig. 3 illustrates the typical configuration of ultraviolet treatment chamber and foam fractionator for the apparatus of Figs, 1 and 2
  • Figs. 4 and 5 illustrates schematically in opposite perspective views floating water treatment apparatus according to a first embodiment of the invention
  • Figs. 6 and 7 are opposite cut away perspective views of the apparatus of Fig. 4
  • Figs. 8 and 9 illustrates schematically in opposite perspective views floating water treatment apparatus according to a further embodiment of the invention
  • Figs. 10 and 11 are opposite cut away perspective views of the apparatus of Fig.
  • Fig. 12 illustrates an alternative embodiment of floating water treatment apparatus according to the invention
  • Fig. 13 illustrates an alternative embodiment of floating water treatment apparatus similar to the embodiment of Fig. 12
  • Figs. 14 and 15 illustrate schematically in perspective and cut-away views floating water treatment apparatus according to a further embodiment of the invention
  • Figs. 16 and 17 illustrate schematically in perspective and cut-away views water treatment means according to a further embodi ment of the invention
  • Figs. 18 and 19 illustrate schematically in opposite perspective views water treatment means according to a further embodiment of the invention
  • Fig, 20 is a top perspective view of floating water treatment apparatus according to another embodiment of the invention
  • Fig. 21 is a side view of the apparatus of Fig. 20
  • FIG. 22 is a longitudinal sectional perspective view of the apparatus of Fig. 20;
  • Fig, 23 is a longitudinal sectional view of the apparatus of Fig. 20;
  • Fig. 24 is a plan view of the apparatus of Fig. 20;
  • Figs. 25 and 26 are opposite end views of the .apparatus of Fig. 20;
  • Figs. 27 and 28 are opposite perspective views of the apparatus of Fig. 20 from the underside Fig. 29 illustrates an array of water treatment apparatuses of the type shown in
  • Fig. 20; Fig. 30 is an isometric exploded view of an alterative water treatment apparatus according to the invention; Figs. 31 to 33 are end, top and side views respectively of the apparatus of Fig.
  • Fig. 34 is a ghost outline view of the apparatus of Fig. 30;
  • Figs, 35 and 36 are isometric and isometric exploded view of a further embodiment of water treatment apparatus;
  • Figs, 37 to 39 are end, top and side views respectively of the apparatus of Fig.
  • Figs. 40 is an exploded isometric view of a water treatment unit for use. in the apparatus of Figs. 30 to 39;
  • Fig. 41 is a ghost outline view of the unit of Fig, 40;
  • Figs. 42 to 44 are end, top and side views respectively of the unit of Fig, 40;
  • Fig. 45 illustrates schematically water treatment apparatus according to another aspect of the present invention associated with a water storage tank;
  • Fig. 46 illustrates schematically water treatment apparatus according to the present invention associated with a swimming or spa pool;
  • Fig, 47 illustrates schematically water treatment apparatus according to the present invention for use in treating sewerage;
  • Fig. 48 illustrates an alternative configuration of ultraviolet and foam fractionator chambers;
  • Fig. 40 is an exploded isometric view of a water treatment unit for use. in the apparatus of Figs. 30 to 39;
  • Fig. 41 is a ghost outline view of the unit of Fig, 40;
  • Figs. 42 to 44 are end, top and side views
  • Fig. 49 illustrates an alternative form of drum filter assembly for use in the water treatment apparatus described above;
  • Fig, 50 illustrates an alternative filter drum for use in the water treatment apparatus;
  • Fig. 1 is a perspective view of the main body of the filter drum of Fig. 50;
  • Fig, 52 is a cross sectional view of the main body of the filter drum of Fig. 50;
  • Fig. 53 is a perspective view of an ultraviolet lamp unit;
  • Fig. 54 is a sectional view of the lamp unit of Fig. 13 along line A-A;
  • Figs. 55 and 56 illustrate in perspective and sectional views an ozone generator for use in the water treatment apparatus; and
  • FIG. 57 illustrates an arrangement for reducing escape of the ozone used in the water treatment apparatus into the atmosphere Detailed Description of the Preferred Embodiments
  • the apparatus 10 comprises a floating vessel 12 of hollow barge-like form having walls 13 formed of a lightweight buoyant concrete.
  • the vessel 12 in the embodiment illustrated is of a substantially rectangular shape however it may be of any shape.
  • the vessel 12 may also have a bow of a shape to facilitate movement of the vessel. 12 in the body of liquid 11.
  • Water to be treated in the apparatus is supplied through an inlet 14 to the water treatment means 15 and through an outlet 16 to be returned to the body Of water 11.
  • the outlet 16 is lower than the inlet 14 such that water flows under the influence of gravity through the water treatment means 15 to the outlet 16.
  • the water may be pumped through the water treatment means 1 ,
  • a one-way valve may be provided in or associated with the outlet 1 to prevent water flowing into the outlet 16 from the body of water 11.
  • the water treatment means 15 includes a screen filter 17 typically a drum filter of the type described in our aforementioned patent application, the contents of which are incorporated herein by reference.
  • a pump (not shown) may be provided to pump water to the inlet 14 for passage into the screen filter 17-
  • the outlet of the screen filter 17 is connected to a biological filter 18 which comprises a chamber containing a biological filter media for holding bacteria for biological contact and action on the water passing therethrough.
  • the biological filter 18 may also be of the type described in our aforementioned patent application.
  • the outlet of the biological filter 18 is connected to an ultraviolet unit 19 which has a chamber housing an elongated ultraviolet light generator. Water flows under the influence of gravity upwardly through the unit 19 and into a foam fractionator 20 for oxygenating and cleaning the water, the foam fractionator 20 additionally including means for introducing ozone into the water in the fractionator 20 for bubbling through the water for sterilizing the water.
  • the fractionator 20 may be replaced by a chamber in which water passing therethrough is subject only to ozone bubbling through the water.
  • the lower end of the foam fractionator 20 is connected to a second ultraviolet treatment unit 21 similar to the unit 19 to pass upwardly therethrough whilst the outlet of the unit 21 is connected to the base of a second biological filter 22 similar to the filter 18, the filter 22 being connected to the outlet 1 for outward flow of treated water back to the body of water 11.
  • the ultraviolet treatment units 19 and 21 may be connected to the foam fractionator/ozone treatment chamber 20 in the manner shown in Fig. 3,
  • the vessel 12 may support one or more water treatment means for treatment of water.
  • a further ozone treatment or foam fractionator chamber 20' (shown in dotted outline in Fig. 2) may be provided in the outlet 16 downstream of the biological filter 22.
  • the apparatus 10 is arranged to float in a body of water to be treated and may be self-powered to move around the body of water or moved by otlier means around the body of liquid. Alternatively the apparatus may be anchored or moored in a fixed position. Water will be continuously treated by the apparatus and treated water flows back to the body of water through the outlet 16.
  • the vessel may include a power source for supplying power to the ultraviolet units and/or ozone generators.
  • the power source may incorporate a solar panel or solar cells.
  • Figs. 4 to 7 there is illustrated water treatment apparatus 25 according to another embodiment of the invention for treating water in a body of contaminated water.
  • the apparatus 25 comprises a buoyant platform 26 which may be formed of lightweight buoyant concrete, a buoyant foam plastics material or any other buoyant material. Alternatively, the buoyant platform 26 may be formed of or include one or more hollow chambers for containing air.
  • a drum filter 27 which is of similar configuration to the drum filter disclosed in our international patent application. No. PCT/AU02/O1 45 and which comprises a drum 28 which includes annular end members 29 supported externally on rollers 30 mounted on a support frame 31.
  • a screen or mesh material 32 is provided between the end members 29 and extends around the periphery thereof.
  • the drum 28 initially includes a plurality of internal circumferentially spaced horizontal members or ribs 33 (only one of which is shown in Fig. 5) extending between the annular end members 29.
  • Water is supplied to the drum filter 27 via an intake duct 34 which communicates with the water beneath the platfomi 26.
  • a pump 35 such as a submergible pump is connected to the intake duct 34 and may be powered by a battery pack or other power supply contained witliin a housing 36 on the platform.
  • the intake duct 34 is connected to a filter supply duct 37 extending in an axial direction into the interior of the drum 28.
  • the supply duct 37 has spaced outlets 38 through which water may flow from the duct 37 to cooperate with the ribs 33 within the drum 28 to effect rotation of the drum 28.
  • the upper side of the supply duct 37 is provided with a pair of outwardly angled members 39 which extend along the duct 37 and define therebetween a channel 40 for catching debris from the drum screen material 32.
  • a spray bar 41 is provided above the drum 28 for spraying water and/or applying a blast of air to the screen material 32 of the drum 28 to displace materials which are caught by the channel 40.
  • the spray bar 41 is connected to a pump and a clean supply of water and/or to an air compressor or air pump.
  • a discharge hopper 42 is supported on the platform 26 adjacent the drum filter 27 to receive materials and liquid from the channel 40.
  • the platform 26 is separated into opposite arms 43 and 44 to receive the hopper 42 therebetween, the hopper 42 being secured on opposite sides at 45 and 46 to the opposite arms 43 and 44 of the platform 26 to maintain the rigidity of the platform 26.
  • the hopper 42 is open, at its lower end and the lower end may be provided with a filter mesh or screen or perforated plate 47 to trap solids and prevent solids returning to the body of water being treated.
  • the duct 37 and the channel 40 extend beyond the end of the drum 28 and over the hopper 42 so that materials trapped in the channel 40 can be readily conveyed to the hopper 42.
  • the platform 26 also carries a tank 48 which is open on its upper side and projects through an opening 49 in the platform 26 to be substantially flush with the upper side of the platform 26.
  • the tank 48 extends downwardly from the platform 26 so that in use the lower portion of the tank 48 is submerged in the body of water being treated.
  • the tank 48 is closed at its lower end and divided by a baffle 50 into a first chamber 51 over which the drum filter 27 is supported.
  • the chamber 51 also carries a biological filter media for carrying bacteria for biological treatment of water in the chamber 51 for removing ammonia and/or nitrites from the filtered water.
  • the lower edge of the baffle 50 is provided with openings or slots 52 so that water in the chamber 51 which has been filtered by the drum filter 27 and subject to the biological filtration can pass therethrough.
  • the tank 48 is further divided by a second baffle 53 parallel the baffle 50 into further chambers 54 and 55, the chamber 54 being defined between the baffles 50 and 53 so that water passing through the openings or slots 52 flows into the chamber 54.
  • the baffle 53 does not extend to the full height of the tank 48 so that the upper edge 56 thereof defines a weir over which water in the chamber 54 can flow into the chamber 55.
  • the chamber 55 is defined between the baffle 53 and an end wall 57 of the tank 48.
  • the end wall 57 includes at its lower end outlets 58 through which treated water flows back into the body of water being treated.
  • the chamber 54 includes one or more ultraviolet light sources comprising lamps
  • ozone outlets 60 for example air stones, nozzles or a perforated pipes at a lower portion of the chamber 55 and connected to a source of ozone which bubbles upwardly through the water flowing into the chamber 55 for sterilizing the water.
  • air may also be introduced into the chamber 55 to bubble through the water therein so that the chamber 55 acts as a foam fractionator or separator to remove impurities in the water.
  • the apparatus 61 is similar in principle to the apparatus of Figs, 4 to 7 and like components to the embodiment of Figs. 4 to 7 have been given like numerals.
  • the apparatus 61 includes a buoyant platform 62 comprising in this instance opposite side buoyant bodies 63 and an end buoyant body 64 extending between the side bodies 63.
  • the apparatus 61 in this instance however includes a pair of drum filters 27 which are supplied from a common intake duct 34 connected through diverging connecting ducts 65 to the drum filter supply ducts 37. The outlets from the supply ducts 37 may be directed such as to cause rotation of the drum 28 of the filters 27 in the same direction or in opposite directions.
  • a hopper 66 Supported between the opposite side buoyant bodies 63 is a hopper 66 which in this case receives and traps debris washed from both of the drum filters 27 through the respective channels 40.
  • the tank 67 beneath the drum filters 27 which is also supported between the side buoyant bodies 63 has a series of outlets 68 on one side which are connected with the lower ends of respective chambers 69 which are formed within a chamber block 70. Water flowing into the chambers 69 from the tank 67 is exposed to oxygenation by passing bubbles of air through the chambers 69.
  • air stones or outlets 71 which are connected to a source of pressurized air are provided in the lower portions of the chambers 69.
  • Further air stones or outlets may additionally or alternatively be provided in the lower portions of the chambers 69 and connected to a source of ozone so that the water in the chambers 69 is subject to ozone to sterilize and clean the water.
  • the upper ends of the chambers 69 are connected to respective ultraviolet treatment chambers 72 corresponding in number to the number of chambers 69.
  • Ultraviolet light generators or sources are provided in the chambers 72 so that water flowing into the chambers 72 is exposed to ultraviolet light.
  • Outlets 73 from the ultraviolet chambers 72 return treated water to the body of water.
  • the outlets 73 from the chambers 72 are arranged such that water flows under the influence of gravity through the tank 67 to the outlets 73. Alternatively or additionally, the water may be pumped through the water treatment components.
  • FIG. 12 illustrates an alternative embodiment of water treatment apparatus 74 according to the invention which is similar to the embodiments of Figs. 8 to 11 and in which like components to the apparatus of Figs. 8 to 11 have been given like numerals.
  • 76 may be provided in the tank 75 for bubbling ozone or air through water in the tank
  • FIG. 13 illustrates further water treatment apparatus 77 according to the invention which is similar to the embodiment of Fig. 9 except that the tank 75 is divided into separate chambers 78 by baffles 79 such that the number of chambers 78 corresponds to the number of ultraviolet treatment chambers 72.
  • the chambers 78 may comprise ozone treatment chambers and/or foam fractionator chambers in which ozone and or air is bubbled through water in the chambers 78.
  • Figs. 14 and 1 illustrate yet a further embodiment of water treatment apparatus 80 according to the invention which again includes an elongated tank 81 into which water from the screen filter tank 67 can flow through outlets 68 therefrom.
  • a baffle 82 which divides the tank 67 into two chambers 83 and 84.
  • the baffle 82 terminates below the top edge of the tank 67 so as to define a weir over which water flows from the chamber 83 to the chamber 84.
  • Outlets 85 from the tank 67 in the for , of openings in a side wall of the tank 67 cornmunicate with the chamber 84 for return of treated water to the body of water being treated.
  • the chamber 83 includes one or more ultraviolet lamps for exposing water flowing upwardly from the outlets 68 to ultraviolet light
  • the chamber 84 includes outlets at its lower end for connection to a source of ozone for flow upwardly through water flowing into the chamber 84 over the upper end of the baffle 82.
  • Figs. 16 and 17 illustrate an alternative water filtering and cleaning unit 86 for use in the water treatment apparatus of the invention but using similar components to that described above for which like components to the above described components have been given like numerals.
  • the supply pi ⁇ e37 of the drum filter 27 extends longitudinally of an elongated tank 87 over which the filter drum 28 (shown in dotted outline) is supported for rotation in a similar manner to that described above, the supply pipe 37 having outlets 38 through which water flows for effecting rotation of the drum 28.
  • the intake pipe 34 in this case for supply of water to the supply pipe 37 is provided al one end of the tank 87.
  • the tank 87 contains a suitable biological filter media supporting bacteria for removal of ammonia and/or nitrites from the water filtered through the filter drum 13 and include a series of elevated outlets 88 along one elongated side wall 89.
  • a chamber block 90 is arranged adjacent to the wall 89 of the tank 88, the chamber block 90 containing a series of cylindrical chambers 91 corresponding to the number of outlets 88 and communicating with respective outlets 92.
  • the chamber block 90 may be formed separately from tlie tank 87 or integrally with the tank 87.
  • the chamber block 90 has a series of outlets 93 communicating with the lower ends of the respective chambers 91.
  • the water in the chambers 91 can be exposed to air supplied to the bases of the chambers 91 to bubble through water in the chambers 1 for removal of impurities which are removed by a skimmer at the upper ends of the chambers 91.
  • Water in the chambers 91 may also be subject to ultraviolet light by providing ultraviolet light sources within one or more of the chambers 1. Treated water then flows outwardly of the outlets 93 to return to the body of water being treated.
  • the outlets 93 may be smaller than the inlets to the chambers 91 or the outlets 93 may be varied in size. The water thus flows under the influence of gravity from the tank 87 and through the outlets 93 back to the body of water. Figs.
  • the tank 87 is provided with outlets 95 along one longitudinal wall 96 and adjacent to the base of the tank 87.
  • respective ultraviolet treatment chambers 97 which contain ultraviolet light elements 98 typically elongated tubular ultraviolet lamps.
  • the upper ends of the chamber 97 are connected to respective chambers 91 of the chamber block 90 through outlet/inlets 98. Tn this case, water in the tank 87 flows through the outlets 95 into the ultraviolet treatment chambers 97 to be exposed to ultraviolet light from the lamps 98.
  • FIG. 90 there is illustrated water treatment apparatus 105 according to another embodiment of the invention for treating water such as water in a body of contaminated water.
  • the apparatus 105 comprises a buoyant platform 106 which comprises a frame 107 and a plurality of buoyant bodies 108 which are secured to the frame 107.
  • the frame 107 comprises a plurality of interconnected elements such as steel or aluminium elements and the construction of the frame 107 is such that it may be disassembled for easy transport.
  • Each buoyant body 108 comprises a sealed air containing hollow body in this embodiment of octagonal cross section however the body 108 may be of any cross section. In another arrangement the bodies 108 may be formed of buoyant foam plastics material or any other buoyant material.
  • the frame 107 includes on opposite sides pairs of elongated frame members 109 with which a longitudinal series of bodies 108 are aligned and secured, Further buoyant bodies 108 are provided at the front of the apparatus 105 and arranged transversely of the frame being supported between further pairs of frame members 110 parallel to the frame members 109.
  • the frame 1 7 supports three open topped tanks 111, 112 and 113 with the tank 111 at the front of the apparatus 105 being elevated above the tanks 112 and 113.
  • the tanks 111, 112 and 113 have in their side walls a series of opposed grooves for receiving baffles as described further below.
  • Supported on the platform 106 above the tank 111 are a pair of filter drums 114 which may be of similar configuration to the drum filter disclosed in our international patent application No. PCT/AU02/010745 and which comprise annular end members 115 and a plurality circumferentially spaced horizontal members or ribs 116 extending between the annular end members 115 and supporting a screen or mesh material 117 which extends around the periphery of the drum 114.
  • the annular end members 115 are supported externally on rollers 1 18 mounted on a support frame 119 which is detachably supported over the tank 111.
  • Water is supplied to drum 114 via a supply duct 120 (see Fig. 25) which commuhicates with the water in which the platform 106 is floating.
  • a pump (not shown) such as a submergible pump is connected to the duct 120 and may be powered by a battery pack or other power supply on the platform 106.
  • the intake duct 120 extends in an axial direction into the interior of the drum 114.
  • the duct 120 has outlets 121 through which water may flow radially from the duct 120 to cooperate with the ribs 116 within the drum 114 to effect rotation of the drum 114.
  • a channel 122 (see Fig. 6) for catching debris from the drum screen material 117 also extends longitudinally in to the drum 1 14.
  • a spray bar 123 is provided above the drum 1 14 for spraying water and/or applying a blast of air to the screen material 1 17 of the drum 1 14 to displace materials which are caught by the channel 122.
  • the spray bar 123 is connected to a pump and a supply of water such as water collecting in one of the tanks 111 and/or to an air compressor or air pump.
  • One or more separate floating waste collectors (not shown) arranged adjacent to the platform 106 are provided to collect materials received in the channel 122 which may be extended out of the drum
  • the or each waste collector may comprise a tank similar to a tank 111, 112 or 113 supported by buoyant bodies 108 around its periphery.
  • the tank 1 1 1 receives the liquid filtered by the filter drum 1 14 and in use the lower portion of the tank 1 1 1, is submerged in the body of water being treated.
  • the chamber 125 also carries biological filter media 126 for carrying denitrifying bacteria for biological treatment of water in the chamber 125 for removing phosphates and/or nitrates from the filtered water.
  • the filter media may comprise a plurality of elements for supporting the bacteria.
  • the filter media may comprise plastic elements and/or coke.
  • Water from the chamber 125 flows over the baffle 124 into a second chamber 127 in. the tank 111 and then flows over the side of the tank 111 into the adjacent tank 112.
  • the tank 112 is divided by a series of parallel baffles 128 and 1 9 into a series of chambers 130 to 135 for exposure of the water flowing into the tank.
  • baffles 128 are supported above the base of the tank 112 so that water can flow beneath the lower edges of the baffles 128 whilst the adjacent baffles 129 commence at the base of the tank 112 but do not extend to the full height of the tank 112 so that the upper edges thereof defines a weir over which water can flow,
  • Water flowing into the tank 1 12 undergoes a serpentine path as indicated by the arrows in Figs. 22 and 23.
  • Water flowing into the chamber 130 is subject to exposure to ozone.
  • means are provided for introducing ozone into the water in the chambers 130, 132 and 134.
  • Such means may include one or more ozone outlets 136 for example air stones at a lower portion of the chamber 130 and connected to a source of ozone which bubbles upwardly through the water flowing into the chambers 130, 132 and 134 for sterilizmg the water.
  • air may also be introduced into the chambers 130, 132 and/or 134 to bubble through the water therein so that the chambers 130, 132 and/or 134 act as foam fractionators to remove impurities in the water.
  • those chambers may include a suitable media such as a granular media. This will ensure increased exposure of the water to ozone in its passage through the chambers 130, 132 and/or 134.
  • the chamber 131 (and chambers 132 and 136) includes one or more ultraviolet light sources in the form of UV lamps 137 to which the water in the chambers 131, 132 or 136 is exposed in its flow upwardly through the chambers 130, 132 and 134 and over the upper edges of the baffles 128 into the next chamber.
  • Water from the chamber 1,36 flows into the tank 113 where it is again subject to exposure to ozone and ultraviolet light.
  • further baffles 128 and 129 are provided in the tank 11.3 to define chambers 138, 139 and 140 with water flowing through the chamber 138 being subject to ozone as in the chambers 130, 132 and 134 and water in the chamber 139 being exposed to ultraviolet light.
  • the chamber 140 comprises a further biological filter chamber and contains a further biological filter media 141 for supporting bacteria for subjecting the water flowing into the chamber 139 over the top of the baffle 129 to bacterial treatment in this case to remove ammonia and/or nitrites.
  • the filter media 141 may be similar to the media 126 contained in the chamber 125.
  • the lower portion of the outer wall of the tank 113 in the chamber 140 includes a series of outlets 142 defined by openings in the wall such that water flowing through the chamber 140 and subject to biological filtration therein passes back to the body of water in which the platform is floating.
  • the platform 106 in this case includes an external walkway 143 to enable persons to walk around the platform 106 however the platform 106 may be in any configuration and comprise any form of buoyant structure or body.
  • the platform 106 whist shown as supporting two filter drums 1 14 may include one or more filter drums 114.
  • the tanks 111, 112 and 113 which are all of a similar construction and which thus can be moulded in a single mould have opposite channels or grooves 144 to receive opposite edges of the baffles to support the baffles in the an upright position.
  • Such an arrangement permits repositioning of baffles where required and thus the number of ozone treatment chambers and ultraviolet treaUnent chambers may be varied as required.
  • all baffles may be removed from the tank 113 so that the whole tank 1 13 can act as a biological filter.
  • the type of bacteria in the biological filter chambers 125 and 139 may be reversed so that the filter chamber 125 removes ammonia and/or nitrites and chamber 139 removes phosphates and/or nitrates. Any other type of bacteria may be used depending upon the impurities or contaminants to be removed from the water.
  • the baffles 128 and 129 are arranged as described above so that the water follows a vertical se ⁇ entine path flowing under the lower edge of one baffle and over the upper edge of the adjacent. Baffles however may also be arranged so that the water follows a horizontal se ⁇ entine path.
  • F,ig. 29 illustrates the manner in which a number of separate water treatment apparatus 105 may be combined into a single water treatment apparatus 146.
  • the apparatus 146 includes a central body 147 from which four apparatuses 105 extend at 90 degrees to each other, The apparatuses 105 are connected to the central body 147 by pivot connections 148, The body 147 is a buoyant body and maybe constructed in a similar manner to the platfomi 106.
  • the body 147 supports all components required for operation of each apparatus 105 including ozone generators for supplying ozone to the units and electrical generators for supply of current to the ultraviolet lamps and also for powering the pump or pumps for supplying water to each apparatus 105. Auxiliary power may be provided by a solar panel or solar cells and/or batteries.
  • a water treatment apparatus 150 according to another embodiment of the invention which includes a water treatment unit 151 supported on a floating structure 152 for floating in a body of water to be treated.
  • the water treatment unit 151 includes a one piece tank 153 which may comprise a single plastics moulding and which includes a main tank part 154 and a series of further interconnected tank parts 155. Adjacent end walls of the respective tank parts 154 and 155 are joined at their corresponding upper ends 156, 157, 158, 159 and
  • each end 157, 158, 159 and 160 being successively of a height less the adjacent end 156, 157, 158, and 159 respectively away from the main tank part 154 (see
  • the main tank part 154 defines a main chamber 161 and each tank part 155 defines respective chambers 162, 163, 164, 165 and 166 and a series of transverse channels 167, 168, 169, 170, 171 and 172 are defined between the respective tank parts.
  • a drum filter 173 similar to that previously described is supported over the chamber 161 of the main tank part 154.
  • the chamber 161 contains medium 174 for carrying bacteria for biological treatment of water in the chamber 1 1 and for slowing flow of water through the chamber 161.
  • a transverse baffle 175 is provided in each chamber 1 2, 163, 164, 165 and 166, Thus each chamber for example the chamber 162 is divided into chamber parts 176 and
  • baffles 175 in the other chambers 163, 164, 165, and 166 similar define each chamber into two chamber parts.
  • the lower end of the baffle 175 is provided with a series of cut-out portions 178.
  • the cut-out portions 178 may be replaced by openings.
  • the baffles 175 may be raised above the bottom of each tank part so that water may flow under the edge of the baffle 175.
  • Outlets 178 for water are provided in the outer wall of the last tank part 155, the outlets 178 being beneath the upper end 160 of the last two joined tank parts 155.
  • the unit 151 further includes a removable cover 179 which is shaped to cover encloses the tank part 154 and 155 and the drum filter 173 , As is apparent in Fig. 44, water flowing through the drum filter 173 passes into the main tank part 161 where it is subject to bacteriological treatment. The water then flows over the end 156 down into the chamber part 176, through the cut-out portions
  • the chamber part 176 (and corresponding parts in the other chambers 163, 164, 165 and 166) may have ozone outlets 180 it is lower end through which zone can flow through the water flowing into the chamber part 176.
  • the chamber part 176- may include a media to limit flow so that extended contact time is provided between the ozone flowing upwardly through the chamber 176 and water flowing downwardly through the chamber 176.
  • the ozone outlets 180 may also be connected to an air supply if desired to selectively enable bubbles of air to flow upwardly through the chamber part 176,
  • the chamberparts 177 (and corresponding chamber parts 163, 164, 165 and 166 of the other tank parts 155) may include ultraviolet lamps 181 so that water flowing upwardly through the chamber part 177 is exposed to ultraviolet light.
  • the floating structure 152 includes a pair of elongated floats 182 on each side of a semi-circular cross section and transversely extending support members or rods 183 extend through each channel 167, 168, 169, 170, 171 and 172 and seat within transverse grooves 184 in the top Of the floats 182.
  • An additional float 185 is provided between the floats 182 at the drum filter end
  • a peripheral walkway 186 is additionally provided on top of the floats 182 and 185.
  • the embodiment of water treatment apparatus 186 of Figs, 35 to 39 is similar to the . embodiment of Figs. 31 to 34 however in this case the floats 187 comprise a plurality of individual floats similar to the floats of the embodiment of Fig. 20.
  • the apparatus 186 has a support frame 188 which includes transverse members 1 9 for location in the channels between respective tank parts 154 and 1 5, the floats 187 being secured to the support frame 180.
  • the water treatment apparatus of Fig 20 to 44 is arranged to float in a body of water to be treated and may be self-powered to move around the body of water or moved by other means around the body of liquid. Alternatively the apparatus may be anchored or moored in a fixed position. Water will be continuously treated by the apparatus and treated water flows back to the body of water through the cleaned water outlets.
  • a storage tank 1 1 such as a rain water tank.
  • the water treatment apparatus 1 0 is mounted on or adjacent the tank 1 1 at an elevated position such as on or next to the top of the tank 191 with water for treatment by the water treatment apparatus 190 pumped thereto by a pump 192 within the tank 1 1.
  • the pump 192 may be supported by a float 1 3 to float on top of or adjacent to the level of the water in the tank 191.
  • Power for the pump 192 in this embodiment may be supplied by solar cells or a solar panel 194 directly or via a battery or batteries charged by the solar cells or solar panels.
  • the water treatment apparatus 190 includes an ultraviolet treatment unit 195, foam fractionator and/or ozone treatment unit
  • a screen or drum filter 197 arranged in series and similar to that described above.
  • Power for the ultraviolet lamp/s of the unit 195 and/or ozone unit 196 may also be supplied with power by batteries charged by the panel 194.
  • a return line 1 8 returns the treated water back to the tank 191 under the influence of gravity.
  • water may be continuously cleaned and filtered provided there is sufficient water in the tank 191 to maintain the pump 192 submerged.
  • water treatment apparatus 199 similar to that described above and in Fig. 45 is used for treating water in a swimming pool 200.
  • the inlet to the water treatment apparatus 199 is connected to a pool surface cleaner 201 through a pump 202 which can pump water from the pool 200 to be treated.
  • Treated water is returned to the pool 200 under the influence of gravity through a return line 203.
  • the water treatment apparatus 199 and/or pump 202 may be supplied with power , by batteries charged by solar cells or solar panel in a similar manner to that described with reference to Fig. 45.
  • the apparatus 204 of Fig. 47 is used for the treatment of sewerage.
  • the apparatus 204 includes a screen or drum filter 205 which receives through an inlet 206 sewerage to be treated for removing solids.
  • a pump may be used to supply sewerage to be treated to the inlet 206 or alternatively the screen or drum filter 205 may be gravity fed through the inlet 206.
  • the outlet 207 from the filter 205 is connected to the lower end of an ultraviolet unit 208 which has a chamber housing an ultraviolet light source.
  • the outlet 209 from the unit 208 is connected to the upper end of a foam fractionator chamber 210.
  • An air or gas stone or outlet 21 1 is connected to a supply or ozone to supply ozone into the water in the chamber 210 for passage as bubbles upwardly through water in the chamber 210 to expose the water therein to ozone.
  • a drain cone or funnel 212 is' rovided in the chamber 210 and is connected to a drain pipe 213 which leads outwardly through a wall of the chamber 210.
  • Air for creating bubbles in the chamber 210 is supplied to the lower end of the chamber 210 to air stones or outlets 214 which are connected to and preferably suspended by air supply ducts.
  • air stones or outlets 214 When air is supplied to the air stones or outlets 214, bubbles of air pass upwardly through the chamber 219 and upon reaching the surface of the water will froth up and create foam which flows into the drain funnel 212 carrying the dirt and fat particles through the drain pipe 213.
  • the apparatus 204 also includes a second foam fractionator chamber 215 and ultraviolet unit 216 which are substantially identical to the first foam fractionator chamber 210 and ultraviolet unit 208 and connected thereto in series.
  • outlet from 217 at the lower end of the first foam fractionator chamber 210 is connected to the . inlet of the second ultraviolet unit 216 and the drain outlet 218 of the chamber 215 is connected in series with the drain outlet 213 and to a common drain or outlet pipe 219.
  • the foam fractionator chamber 215 has an outlet 220 providing a treated sewerage outlet, Sewerage to be treated thus passes from the drum filter 205 into the first ultraviolet unit 208 where it is exposed to ultraviolet light as it passes upwardly therethrough to destroy pathogens, The sewerage then passes into the foam fractionator chamber 210 to flow downwardly with ozone and air supplied to the lower end of the chamber 210 exiting through the outlets 211 and 214 as bubbles which pass upwardly through the chamber 210 against the flow circulating downwardly through the chamber 210 in the opposite direction.
  • liquid from the outlet 217 in the base of the first foam fractionator chamber 210 passes upwardly through the second ultraviolet unit 216 and into the second foam fractionator chamber 215 again for exposure to ozone and air in the manner described above with waste materials collecting in foam at the surface level of water in the chamber 215 passing into the funnel 212 for flow through the drain pipe 218 to the common waste line 219.
  • Flow of liquid from the first foam fractionator chamber 21 to the second ultraviolet unit 216 can be assisted by injection of air by an air injector 221 in the outlet 21,7. Further an air injector 222 may be used to assist flow of the treated sewerage from the second foam fractionator outlet 220.
  • FIG. 48 there is illustrated in plan view an alternative configuration of foam fractionator chambers and ultraviolet units 223 and 224.
  • the respective ultraviolet units 224 are provided on opposite sides of aligned foam fractionator chambers 223 to form a compact assembly.
  • Fig. 49 illustrated an alternative embodiment of drum filter 225 for use in the above or other filtration systems. .
  • the filter drum 226 in this case is of similar construction to the filter drums 28 having end annular members 227 which extend radially outwardly of the filter screen 228 to define annular tracks 229.
  • the tracks 229 are supported on rollers 230 (shown in dotted outline) and longitudinal ribs 231 extend between the end annular members 227 and co-act with water supplied to the interior of the drum 226 through supply pipe 232 (shown in dotted outline) having outlets 233 to effect rotation of the drum 226.
  • a spray bar 234 shown in dotted outline is provided above the drum 226 for spraying water and/or applying air against the screen 238.
  • a U- or C-shaped trough 235 is arranged within the drum 226 and extends longitudinally thereof.
  • the trough 235 is supported by respective mobile carriages 236. at opposite ends of the drum 226.
  • carriage 236 includes a pair of grooved rollers 237 which are joined tlirough, and supported rotatably via axles to, an arcuate connecting bar 238.
  • Support arms 239 extend from the axles of the rollers 237 and are connected pivotally via lugs 240 to opposite sides of the trough 235.
  • the arms 239 have an inwardly kicked portion 241 such that the point of connection of the arms 23 to the troughs 235.is aligned with the track 229.
  • the carriages 236 support the trough 235 within the filter drum 226 with the rollers 237 of the carriages 236 rolling along the rotating track 229.
  • the trough 235 extends beyond one or both ends of the drum 226 such that materials collecting in the trough 235 can be conveyed away from the drum 226 such as to the hopper 42 of Fig. 4.
  • Figs. 50 to 52 there is illustrated an alternative embodiment of drum filter 242 for use in the above water treatment system described above of any other water filtration system.
  • the filter drum 242 includes a main filter body 243 and annular members 244 at opposite ends of the main body 243 and which extend radially outwardly of the main body 243 so that the annular end members 244 may be supported on rollers 30 in a similar manner to that shown in Fig. 4.
  • the main body 243 is preferably integrally formed of plastics such as by being moulded in a rotational moulding process.
  • the main body 243 comprises a series of channels 245 arranged at circumferentially spaced positions, the channels 245 being open at their bases to define elongated openings 246 on the radially outer sides of the drum body 243.
  • the openings 246 are covered by a screen or mesh material 247 which is secured to the outer edges of the channels 245,
  • the channels 245 are defined by opposite side walls 248 and 249 which extend parallel to the axis of rotation of the drum 242.
  • the side walls 248 of each channel 245 lie in radially extending planes R whilst the side walls 249 of the channels 245 are angled at an acute angle ⁇ to the radial plane R extending through the side wall 248 of that channel 245,
  • the side walls 249 can thus act as paddles to assist in rotating the drum 242 when water or liquid is introduced into the interior of the drum 242 as described with reference fo example to the drum 28 of Figs. 4 to 6.
  • the ultraviolet lamps used in the water treatment apparatus such as the lamps 137 shown in Fig.
  • an ultraviolet treatment unit 250 includes an elongated float 251 which has spaced openings 252 extending therethrough for receipt of respective ultraviolet lamps 137 which are held frictionally in the openings 252 and extend downwardly from the float 251.
  • the upper ends of the lamps 137 which contain the electrical connections or cables arc arranged on the upper side of the float 251.
  • a cage 253 is also supported Lo the float 251 and surrounds the lamps 137.
  • the ultraviolet treatment unit 250 may be placed in a body of water and the float 251 will support the lamps 137 in a substantially vertical attitude so that the water in which the unit 250 is floating is exposed to ultraviolet light.
  • the float 251 will always ensure that the electrical contacts or terminals of the lamps 137 are above the water level.
  • the cage 253 whilst permitting contact between the lamps 137 and water will protect the lamps 137 from damage.
  • the cage 253 is formed of a wire mesh or plastics mesh.
  • the ultraviolet unit 250 may be used in place of the ultraviolet lamps 137 as
  • the ozone generator 254 which may be used for supplying ozone for the above water treatment apparatus.
  • the ozone generator 254 comprises an elongated hollow tubular housing 255 which is closed or sealed at one end 256 by an integrally formed end wall or a removable cap or plug.
  • the housing 255 further has an air inlet 257 at one end and an outlet 258 at its opposite end for ozone.
  • Supported within the housing 255 is an elongated ultraviolet lamp 259 which emits ultraviolet light at a frequency, typically at a frequency of less than 210 nanometres to convert oxygen in air into ozone within the housing 255 from air flowing into the housing 255.
  • the lamp 259 is supported by one or more disk-like supports 260 which have an outer diameter for neat receipt within the housing 255 and which have a central aperture 261 for receipt of and frictional engagement with the lamp 259.
  • the lamp 259 is supported by and sealed to the end cap 262 and has at least its end terminals 263 projecting through the end cap 262 for connection to an electrical cable 264.
  • power is supplied to the lamp 259 through the cable 24 and air is pumped by any air pump into the inlet 257 as indicated by the arrow in Fig. 55. Air passing along the housing 255 towards the outlet 258 is exposed to the ultraviolet light of the lamp 259.
  • a further ultraviolet lamp 265 may be placed above the chamber 130 (and further lamps (not shown) above the chambers 132, 134 or 138 so that escaping ozone is exposed to ultraviolet light.
  • the lamp 265 emits ultraviolet light at frequency to destroy the generated zone.
  • an outlet 266 may be provided from an ozone treatment chamber such as the chamber 130 through which ozone bubbling through the water in the chamber 130 from an outlet 136 passes.
  • the outlet 266 is connected to a downwardly extending duct 267 in which an ultraviolet lamp 268 is located.
  • an ultraviolet lamp 268 is located.
  • the frequency of the lamp 65 is selected to destroy the ozone.
  • the ozone treatment arrangements described above may of course be used in any application where ozone is used for water treatment and the escape of which to the atmosphere is to be controlled.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biotechnology (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Physical Water Treatments (AREA)

Abstract

L'invention concerne un appareil de traitement de l'eau (105), qui comprend généralement une plate-forme flottante (106) posée sur des flotteurs (108); un filtre à tambour (114) destiné au traitement initial de l'eau et sur laquelle flotte la plate-forme (106); et une série de chambres de traitement (130,131,133,134) dans lesquelles l'eau provenant du filtre à tambour (114) est exposée à l'ozone et aux rayons ultraviolets. Des chicanes (128 et 129) provoquent un écoulement ondulé de l'eau à travers les chambres (130,131,133,134). L'appareil (105) peut aussi comprendre une chambre (125) située sous le filtre à tambour (114) et contenant des bactéries évoluant dans des milieux (126) placés dans la chambre munie d'un filtre biologique. Dans d'autres modes de réalisation, et dans de nombreuses applications différentes, l'appareil peut être posé au sol à des fins de traitement de l'eau.
PCT/AU2005/000878 2004-06-21 2005-06-21 Appareil de traitement de l'eau WO2005123598A1 (fr)

Priority Applications (9)

Application Number Priority Date Filing Date Title
PCT/AU2005/001259 WO2006021028A1 (fr) 2004-08-24 2005-08-24 Générateur d'ozone
CA 2611284 CA2611284A1 (fr) 2005-06-01 2006-06-01 Unite modulaire de traitement de l'eau
EP20060741146 EP1926688A1 (fr) 2005-06-01 2006-06-01 Unite modulaire de traitement de l'eau
KR20077030948A KR20080039351A (ko) 2005-06-01 2006-06-01 모듈식 수처리 유닛
JP2008513865A JP2008542008A (ja) 2005-06-01 2006-06-01 モジュラ型水処理ユニット
EA200702662A EA200702662A1 (ru) 2005-06-01 2006-06-01 Модульный блок обработки воды
US11/921,220 US20090127176A1 (en) 2005-06-01 2006-06-01 Modular Water Treatment Unit
AU2006254716A AU2006254716A1 (en) 2005-06-01 2006-06-01 Modular water treatment unit
PCT/AU2006/000729 WO2006128229A1 (fr) 2005-06-01 2006-06-01 Unite modulaire de traitement de l'eau

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
AU2004903375 2004-06-21
AU2004903375A AU2004903375A0 (en) 2004-06-21 Water treatment apparatus
AU2004904809A AU2004904809A0 (en) 2004-08-24 Floating water treatment apparatus
AU2004904809 2004-08-24
AU2004906493A AU2004906493A0 (en) 2004-11-12 Water treatment apparatus
AU2004906493 2004-11-12

Publications (1)

Publication Number Publication Date
WO2005123598A1 true WO2005123598A1 (fr) 2005-12-29

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Country Status (1)

Country Link
WO (1) WO2005123598A1 (fr)

Cited By (14)

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Publication number Priority date Publication date Assignee Title
GB2467131A (en) * 2009-01-22 2010-07-28 Dean Pimlott Ultra Violet Swimming Pool Filter
EP2324702A1 (fr) * 2009-11-12 2011-05-25 Fountainhead, Llc Lit de traitement flottant
ITNA20100012A1 (it) * 2010-03-15 2011-09-16 Apuleo Manuela Schiumatoio galleggiante per acquario
WO2012000019A1 (fr) 2010-06-30 2012-01-05 Acid Ip Pty. Ltd. Système de traitement de l'eau modulaire
WO2013082716A1 (fr) * 2011-12-08 2013-06-13 Anaergia Inc. Microgrille en tambour rotative pour le traitement primaire de l'eau usée
WO2013096682A1 (fr) * 2011-12-21 2013-06-27 Heliae Development Llc Systèmes et procédés permettant d'éliminer les contaminants présents dans une culture de microalgues
CN105174349A (zh) * 2015-07-16 2015-12-23 常州南夏墅建设有限公司 一种化工污水快速处理装置及处理方法
GB2540678A (en) * 2015-07-22 2017-01-25 Attwell Moorhead David Bioremediation system
CN111467871A (zh) * 2020-03-27 2020-07-31 中国建筑第八工程局有限公司 清淤底泥智能筛分装置
WO2020191446A1 (fr) * 2019-03-26 2020-10-01 Evocra Pty Limited Procédé de traitement des eaux usées
CN114804389A (zh) * 2022-05-12 2022-07-29 江苏大学 一种转筒过滤-多级介质吸附径流雨水净化装置
US20220290393A1 (en) * 2021-03-15 2022-09-15 Clean Waterways, LLC Devices, systems, and methods for removing waste from bodies of water
SE2151575A1 (en) * 2021-12-21 2023-06-22 Arctic Sustainability Group Ab Water treatment system
WO2023168323A3 (fr) * 2022-03-04 2024-01-04 Ohio State Innovation Foundation Véhicule de surface sans pilote (usv) pour le traitement de masses d'eau et de pipelines transportant de l'eau

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Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2467131A (en) * 2009-01-22 2010-07-28 Dean Pimlott Ultra Violet Swimming Pool Filter
EP2324702A1 (fr) * 2009-11-12 2011-05-25 Fountainhead, Llc Lit de traitement flottant
ITNA20100012A1 (it) * 2010-03-15 2011-09-16 Apuleo Manuela Schiumatoio galleggiante per acquario
EP2588417A4 (fr) * 2010-06-30 2014-01-01 Acid Ip Pty Ltd Système de traitement de l'eau modulaire
WO2012000019A1 (fr) 2010-06-30 2012-01-05 Acid Ip Pty. Ltd. Système de traitement de l'eau modulaire
EP2588417A1 (fr) * 2010-06-30 2013-05-08 Acid IP Pty. Ltd. Système de traitement de l'eau modulaire
WO2013082716A1 (fr) * 2011-12-08 2013-06-13 Anaergia Inc. Microgrille en tambour rotative pour le traitement primaire de l'eau usée
US8546133B2 (en) 2011-12-21 2013-10-01 Heliae Development Llc Systems and methods for contaminant removal from a microalgae culture
US8617891B2 (en) 2011-12-21 2013-12-31 Heliae Development, Llc Systems and methods for contaminant removal from a microalgae culture
WO2013096682A1 (fr) * 2011-12-21 2013-06-27 Heliae Development Llc Systèmes et procédés permettant d'éliminer les contaminants présents dans une culture de microalgues
US8501475B2 (en) 2011-12-21 2013-08-06 Heliae Development Llc Systems and methods for contaminant removal from a microalgae culture
CN105174349A (zh) * 2015-07-16 2015-12-23 常州南夏墅建设有限公司 一种化工污水快速处理装置及处理方法
GB2540678B (en) * 2015-07-22 2022-06-08 Atwell Moorhead David Bioremediation system
GB2540678A (en) * 2015-07-22 2017-01-25 Attwell Moorhead David Bioremediation system
WO2020191446A1 (fr) * 2019-03-26 2020-10-01 Evocra Pty Limited Procédé de traitement des eaux usées
CN111467871A (zh) * 2020-03-27 2020-07-31 中国建筑第八工程局有限公司 清淤底泥智能筛分装置
US20220290393A1 (en) * 2021-03-15 2022-09-15 Clean Waterways, LLC Devices, systems, and methods for removing waste from bodies of water
SE2151575A1 (en) * 2021-12-21 2023-06-22 Arctic Sustainability Group Ab Water treatment system
WO2023168323A3 (fr) * 2022-03-04 2024-01-04 Ohio State Innovation Foundation Véhicule de surface sans pilote (usv) pour le traitement de masses d'eau et de pipelines transportant de l'eau
CN114804389A (zh) * 2022-05-12 2022-07-29 江苏大学 一种转筒过滤-多级介质吸附径流雨水净化装置

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