WO2013064742A1 - Water treatment plant - Google Patents
Water treatment plant Download PDFInfo
- Publication number
- WO2013064742A1 WO2013064742A1 PCT/FI2012/051059 FI2012051059W WO2013064742A1 WO 2013064742 A1 WO2013064742 A1 WO 2013064742A1 FI 2012051059 W FI2012051059 W FI 2012051059W WO 2013064742 A1 WO2013064742 A1 WO 2013064742A1
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- WIPO (PCT)
- Prior art keywords
- water
- tank
- bioreactor
- plant
- passage
- Prior art date
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 229910001868 water Inorganic materials 0.000 title claims abstract description 59
- 241000251468 Actinopterygii Species 0.000 claims abstract description 9
- 238000009313 farming Methods 0.000 claims abstract description 4
- 238000000746 purification Methods 0.000 claims description 16
- 239000012495 reaction gas Substances 0.000 claims description 13
- 239000012530 fluid Substances 0.000 claims description 10
- 239000012876 carrier material Substances 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 9
- 238000005086 pumping Methods 0.000 claims description 9
- 239000008213 purified water Substances 0.000 claims description 5
- 230000000630 rising effect Effects 0.000 claims description 3
- 238000009987 spinning Methods 0.000 claims description 3
- 239000002351 wastewater Substances 0.000 claims description 3
- 244000005700 microbiome Species 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 238000009372 pisciculture Methods 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 241000238557 Decapoda Species 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- -1 for example Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000010841 municipal wastewater Substances 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 235000015170 shellfish Nutrition 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- 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
- C02F3/10—Packings; Fillings; Grids
-
- 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
- C02F3/082—Rotating biological contactors
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
-
- 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
- C02F3/10—Packings; Fillings; Grids
- C02F3/101—Arranged-type packing, e.g. stacks, arrays
-
- 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
- C02F3/12—Activated sludge processes
- C02F3/20—Activated sludge processes using diffusers
-
- 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
- C02F3/12—Activated sludge processes
- C02F3/22—Activated sludge processes using circulation pipes
- C02F3/223—Activated sludge processes using circulation pipes using "air-lift"
-
- 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
- C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
-
- 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
- C02F2301/026—Spiral, helicoidal, radial
-
- 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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
- C02F3/303—Nitrification and denitrification treatment characterised by the nitrification
-
- 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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
- C02F3/305—Nitrification and denitrification treatment characterised by the denitrification
-
- 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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/308—Biological phosphorus removal
-
- 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
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
- C02F3/322—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae use of algae
-
- 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
Definitions
- the present invention relates to a water treatment plant comprising at least one bioreactor, the said at least one bioreactor comprising a tank section provided with inlet means for the water to be purified and outlet means for the purified water, inside which tank is carrier material onto which a biofilm may be formed, in which tank are in addition arranged means for supplying a fluid containing a reaction gas required by the purification process, the tank section being essentially circular or elliptical in cross-section, whereupon the water outlet means are provided in the tank section in such a way that the tank section is essentially full of water during the purification process, and which reactor comprises control means for operating the fluid supply means in such a way that a spinning motion of the carrier, the water and the fluid containing reaction gas is effected thereby around a rotation centreline passing essentially through the tank's cross-sectional centre.
- the water is passed through a reactor, wherein micro-organisms are utilised for converting water-borne impurities into harmless end products such as carbon dioxide, minerals and water.
- the micro-organisms may also bind to themselves, that is, to the biomass, non-biodegradable products, for example heavy metals. Purification may be carried out aerobically or anaerobically.
- bioreactors for purifying waste water such as trickling filters, biorotors (rotating biological contactors), fluidized bed reactors, fixed bed reactors and moving bed reactors.
- One prior art bioreactor comprises conveying a carrier material to the process, on the surface of which carrier material micro-organisms may grow in the form of a biofilm.
- the cross-section of the tank section is essentially circular or elliptical, the water outlet means being arranged in the tank section in such a way that the tank section is essentially full of water during the purification process.
- the fluid supply means are disposed on the tank wall and the reactor comprises control means for operating the fluid supply means in such a way that a spinning motion of the carrier, the water and the fluid containing reaction gas is effected thereby around a rotation centreline passing essentially through the tank's cross-sectional centre, whereby the control means are adapted to optionally effect a deactivation of the fluid supply means at desired times.
- plants treating municipal waste waters require substantial amounts of energy for transferring the treated waters from one basin to another.
- the aim of the present invention is to provide a solution by means of which the pumping energy required in the various water treatment plants, where water is purified biologically, can be produced economically and efficiently.
- the water treatment plant according to the invention is characterised in that in the tank section is arranged a downwards directed passage, which passage is connected to the inlet of the water to be treated, and in which passage are arranged supply means for air or other reaction gas at a distance from the level of the lower edge of the passage in such a way that the reaction gas rising upwards in the passage transfers the water in the passage to the reactor, thus bringing about a pumping effect in the water in the bioreactor and transferring it to the next stage at the plant.
- the bioreactor is preferably the rotating-bed bioreactor disclosed in international published application WO2007077298A1.
- Figure 1 shows a diagrammatic view in principle of a bioreactor applicable for use in a plant according to the invention
- Figure 2 shows a diagrammatic view in principle of an embodiment of a fish farm implemented according to the invention
- Figure 3 shows an algae-growing arrangement provided in connection with the fish farm.
- the bioreactor 1 shown in Figure 1 comprises an elongated, tubular tank section 2 which is preferably circular or elliptical in cross-section.
- the tank section 2 is provided with inlet means 7 for the water to be purified and outlet means 6 for the purified water.
- in the lower part of the tank 2 is arranged a downwards directed passage 8 to which the inlet 7 of the water to be treated is connected.
- the water inlet means and outlet means 6 are disposed in such a way that the supply of the water to be purified and the discharge of the purified water can be carried out so that the tank section 2 is essentially full of water during the purification process.
- the water level is designated by the letter W.
- carrier material 3 onto which micro-organisms may be layered as a biofilm.
- the carrier material may consist of, for example, a single carrier element or several carrier elements joined permanently with one another, or of several separate carrier material elements, in which case, when using several carrier material elements, they may be identical to or differ from one another, for example, in terms of their size, shape, density and/or other properties.
- a downwards directed passage 8 which is connected to the inlet 7 of the water to be treated.
- supply means 4 for air or other reaction gas at a distance from the level of the lower edge of the passage in such a way that the reaction gas rising upwards in the passage transfers the water in the passage to the reactor, thus bringing about a pumping effect in the water in the bioreactor and transferring it to the next stage at the plant.
- the means 4 operate both to supply the reaction gas required by the purification process and at the same time to produce the buoyancy bringing about the pumping effect in the water to be treated.
- the supply means may be, for example, about 1/3 of the vertical dimension of the passage extending from the lower edge of the passage 8.
- the farm comprises a fish farming tank 21 and at least one bioreactor 20 in flow connection with the tank, in which the water from the tank is purified biologically before supplying it back to the farming tank 21.
- Reference numeral 23 denotes a drum screen and reference numeral 24 an oxidation column.
- the aeration system is denoted by reference numeral 25.
- bioreactors 20 There are preferably several bioreactors 20 arranged in succession in such a way that aerobic purification takes place in the first bioreactor or group of bioreactors and oxygenous nitrification (NH 3 -> N0 2 " -> N0 3 " ) takes place in the next bioreactor or group of bioreactors, after which the water is conveyed to an oxygen-free denitrification stage taking place in the next bioreactor or group of bioreactors, where the nitrogen in the form of a nitrate is reduced to nitrogen gas (N0 3 " -> N0 2 " -> NO -> N 2 0 -> N 2 ).
- the purified water can be delivered, for example, to a phosphorus precipitation section.
- FIG 3 shows an algae-growing arrangement provided in connection with a fish farm, which comprises at least one algae-growing bioreactor 26, in which, for example, the removal of phosphorus from the water discharged from the tank takes place.
- Algae may be grown, for example, for foodstuff, nutrient or energy purposes.
- a flotation device 27 From the reactor or reactor group 26 the water is conveyed to a flotation device 27 from which a part of the water is conveyed through a pipe 32, for example, to the bioreactor 20 of Figure 2 and a part to the clarifier 28, at the bottom of which is a pipe connection for the recovery 31 of algae and for sampling 30.
- the clarifier is connected through a balancing reservoir 29 in flow connection with the algae- growing bioreactor 26.
- the solution according to the invention makes it possible to recycle the water to be treated with essentially the same reaction gas supply which is already required for the biological purification process; in other words, without separate pumps and the additional costs incurred by them.
- a fish farm can be made into a completely closed system which will not burden the environment.
- the plant can be implemented as a farm for other aquatic species, such as crabs and shellfish.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Environmental Sciences (AREA)
- Health & Medical Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Animal Husbandry (AREA)
- Molecular Biology (AREA)
- Biological Treatment Of Waste Water (AREA)
- Farming Of Fish And Shellfish (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
The invention relates to a water treatment plant comprising at least one bioreactor (20). The said at least one bioreactor (20) is in addition arranged to function as a mass pump which recycles the water treated at the plant. The plant is, for example, a fish farm comprising a farming tank (21), the water of which is recycled through a bioreactor (20) continuously or at regular intervals in such a way that the water in the tank is purified essentially completely within a certain time.
Description
Water treatment plant
The present invention relates to a water treatment plant comprising at least one bioreactor, the said at least one bioreactor comprising a tank section provided with inlet means for the water to be purified and outlet means for the purified water, inside which tank is carrier material onto which a biofilm may be formed, in which tank are in addition arranged means for supplying a fluid containing a reaction gas required by the purification process, the tank section being essentially circular or elliptical in cross-section, whereupon the water outlet means are provided in the tank section in such a way that the tank section is essentially full of water during the purification process, and which reactor comprises control means for operating the fluid supply means in such a way that a spinning motion of the carrier, the water and the fluid containing reaction gas is effected thereby around a rotation centreline passing essentially through the tank's cross-sectional centre.
In the biological purification of water, such as, for example, waste water, the water is passed through a reactor, wherein micro-organisms are utilised for converting water-borne impurities into harmless end products such as carbon dioxide, minerals and water. In biological water purification, the micro-organisms may also bind to themselves, that is, to the biomass, non-biodegradable products, for example heavy metals. Purification may be carried out aerobically or anaerobically. Prior known are various bioreactors for purifying waste water such as trickling filters, biorotors (rotating biological contactors), fluidized bed reactors, fixed bed reactors and moving bed reactors. One prior art bioreactor comprises conveying a carrier material to the process, on the surface of which carrier material micro-organisms may grow in the form of a biofilm.
In an earlier international published application WO2007077298A1 of the present application is disclosed an improved bioreactor by means of which the
disadvantages of both the fixed process and the moving process are eliminated, thus achieving a higher degree of purification of impurities per unit of volume than with other known reactors and, therefore, lower purification costs. In such rotating type of bioreactor, the cross-section of the tank section is essentially circular or elliptical, the water outlet means being arranged in the tank section in such a way that the tank section is essentially full of water during the purification process. The
fluid supply means are disposed on the tank wall and the reactor comprises control means for operating the fluid supply means in such a way that a spinning motion of the carrier, the water and the fluid containing reaction gas is effected thereby around a rotation centreline passing essentially through the tank's cross-sectional centre, whereby the control means are adapted to optionally effect a deactivation of the fluid supply means at desired times.
For example, plants treating municipal waste waters require substantial amounts of energy for transferring the treated waters from one basin to another.
Similarly, for example, in fish farms quite considerable pumping energies are required for changing the water in the fish farming tanks completely sufficiently often, typically about once an hour. The aim of the present invention is to provide a solution by means of which the pumping energy required in the various water treatment plants, where water is purified biologically, can be produced economically and efficiently.
To achieve this aim, the water treatment plant according to the invention is characterised in that in the tank section is arranged a downwards directed passage, which passage is connected to the inlet of the water to be treated, and in which passage are arranged supply means for air or other reaction gas at a distance from the level of the lower edge of the passage in such a way that the reaction gas rising upwards in the passage transfers the water in the passage to the reactor, thus bringing about a pumping effect in the water in the bioreactor and transferring it to the next stage at the plant. The bioreactor is preferably the rotating-bed bioreactor disclosed in international published application WO2007077298A1.
The invention is described in greater detail in the following, with reference to the accompanying drawings, in which:
Figure 1 shows a diagrammatic view in principle of a bioreactor applicable for use in a plant according to the invention,
Figure 2 shows a diagrammatic view in principle of an embodiment of a fish farm implemented according to the invention, and
Figure 3 shows an algae-growing arrangement provided in connection with the fish farm.
The bioreactor 1 shown in Figure 1 comprises an elongated, tubular tank section 2 which is preferably circular or elliptical in cross-section. The tank section 2 is provided with inlet means 7 for the water to be purified and outlet means 6 for the purified water. In the embodiment shown in Figure 1, in the lower part of the tank 2 is arranged a downwards directed passage 8 to which the inlet 7 of the water to be treated is connected. The water inlet means and outlet means 6 are disposed in such a way that the supply of the water to be purified and the discharge of the purified water can be carried out so that the tank section 2 is essentially full of water during the purification process. In Figure 1, the water level is designated by the letter W.
Inside the tank section is provided carrier material 3 onto which micro-organisms may be layered as a biofilm. The carrier material may consist of, for example, a single carrier element or several carrier elements joined permanently with one another, or of several separate carrier material elements, in which case, when using several carrier material elements, they may be identical to or differ from one another, for example, in terms of their size, shape, density and/or other properties. In the lower part of the tank 2 is arranged a downwards directed passage 8 which is connected to the inlet 7 of the water to be treated. In the passage are provided supply means 4 for air or other reaction gas at a distance from the level of the lower edge of the passage in such a way that the reaction gas rising upwards in the passage transfers the water in the passage to the reactor, thus bringing about a pumping effect in the water in the bioreactor and transferring it to the next stage at the plant. The means 4 operate both to supply the reaction gas required by the purification process and at the same time to produce the buoyancy bringing about the pumping effect in the water to be treated. The supply means may be, for example, about 1/3 of the vertical dimension of the passage extending from the lower edge of the passage 8. By means of the length of the passage 8 can be
determined the lifting height of the water and by locating the water outlet means 6 of the bioreactor close to the water level, the effect of buoyancy is converted into a pumping effect which transfers water. In a rotating-bed bioreactor, the rotating motion of the carrier material elements intensifies the pumping effect considerably compared with the pumping effect brought about by buoyancy alone. One or more bioreactors operating as a mass pump can be arranged to carry out the recycling of the water to be treated essentially completely, thereby avoiding the acquisition of separate pumps and the acquisition and operating costs incurred by them. Figure 2 shows diagrammatically a fish farm implemented according to the invention. The farm comprises a fish farming tank 21 and at least one bioreactor 20 in flow connection with the tank, in which the water from the tank is purified biologically before supplying it back to the farming tank 21. Reference numeral 23 denotes a drum screen and reference numeral 24 an oxidation column. The aeration system is denoted by reference numeral 25.
There are preferably several bioreactors 20 arranged in succession in such a way that aerobic purification takes place in the first bioreactor or group of bioreactors and oxygenous nitrification (NH3 -> N02 " -> N03 ") takes place in the next bioreactor or group of bioreactors, after which the water is conveyed to an oxygen-free denitrification stage taking place in the next bioreactor or group of bioreactors, where the nitrogen in the form of a nitrate is reduced to nitrogen gas (N03 " -> N02 " -> NO -> N20 -> N2). Finally, the purified water can be delivered, for example, to a phosphorus precipitation section.
Figure 3 shows an algae-growing arrangement provided in connection with a fish farm, which comprises at least one algae-growing bioreactor 26, in which, for example, the removal of phosphorus from the water discharged from the tank takes place. Algae may be grown, for example, for foodstuff, nutrient or energy purposes. From the reactor or reactor group 26 the water is conveyed to a flotation device 27 from which a part of the water is conveyed through a pipe 32, for example, to the bioreactor 20 of Figure 2 and a part to the clarifier 28, at the bottom of which is a pipe connection for the recovery 31 of algae and for sampling 30. The clarifier is connected through a balancing reservoir 29 in flow connection with the algae- growing bioreactor 26.
The solution according to the invention makes it possible to recycle the water to be treated with essentially the same reaction gas supply which is already required for the biological purification process; in other words, without separate pumps and the additional costs incurred by them. Furthermore, for example, a fish farm can be made into a completely closed system which will not burden the environment. In addition to a fish farm, the plant can be implemented as a farm for other aquatic species, such as crabs and shellfish.
Claims
1. A water treatment plant comprising at least one bioreactor (20), the said at least one bioreactor (20) comprising a tank section (2) provided with inlet means (7) for the water to be purified and outlet means (6) for the purified water, inside which tank is carrier material (3) onto which a biofilm may be formed, in which tank are in addition arranged means (4) for supplying a fluid containing a reaction gas required by the purification process, the tank section (2) being essentially circular or elliptical in cross-section, whereupon the water outlet means (6) are provided in the tank section (2) in such a way that the tank section (2) is essentially full of water during the purification process, and which reactor comprises control means for operating the fluid supply means in such a way that a spinning motion of the carrier, the water and the fluid containing reaction gas is effected thereby around a rotation centreline passing essentially through the tank's cross-sectional centre,
characterised in that in the tank section (2) is arranged a downwards directed passage (8), which passage (8) is connected to the inlet (7) of the water to be treated, and in which passage are arranged supply means (4) for air or other reaction gas at a distance from the level of the lower edge of the passage in such a way that the reaction gas rising upwards in the passage transfers the water in the passage to the reactor, thus bringing about a pumping effect in the water in the bioreactor and transferring it to the next stage at the plant.
2. A plant as claimed in claim 1, characterised in that at the stage (21) following the bioreactor (20), the water level is essentially at the water level of the bioreactor or slightly below it.
3. A plant as claimed in any of the claims 1 to 2, characterised in that the plant is a waste water purification plant comprising several purification stages, from the last stage of which water is recycled to the first stage.
4. A plant as claimed in any of the claims 1 to 2, characterised in that the plant is a fish farm comprising a farming tank (21), the water of which is recycled through a bioreactor (20) continuously or at regular intervals in such a way that the water in the tank is purified essentially completely within a certain time.
5. A plant as claimed in claim 4, characterised in that the farming tank (21) is connected in flow connection with at least one algae-growing bioreactor (22).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI20116093A FI20116093L (en) | 2011-11-04 | 2011-11-04 | Water treatment facility |
FI20116093 | 2011-11-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013064742A1 true WO2013064742A1 (en) | 2013-05-10 |
Family
ID=47428666
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FI2012/051059 WO2013064742A1 (en) | 2011-11-04 | 2012-10-31 | Water treatment plant |
Country Status (3)
Country | Link |
---|---|
AR (1) | AR088623A1 (en) |
FI (1) | FI20116093L (en) |
WO (1) | WO2013064742A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105145461A (en) * | 2015-09-30 | 2015-12-16 | 中国科学院海洋研究所 | Rising and falling flow culture facility suitable for juvenile mollusk culture |
CN105660508A (en) * | 2016-03-11 | 2016-06-15 | 江苏元中直流微电网有限公司 | Home intelligent fish tank capable of being controlled remotely |
RU178125U1 (en) * | 2017-12-18 | 2018-03-23 | Николай Михайлович Белковский | Closed-water hatchery |
CN108203207A (en) * | 2018-01-30 | 2018-06-26 | 苏州农业职业技术学院 | A kind of farm water circulation of culture zone rain dirt separation utilizes system |
US10961140B2 (en) | 2017-04-24 | 2021-03-30 | Clewer Aquaculture Oy | Bioreactor with moving carriers |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5853578A (en) * | 1996-07-10 | 1998-12-29 | Flyaks; Nina | Method for biological purification of liquids and biological filter for purification of liquids |
WO2007077298A1 (en) | 2006-01-04 | 2007-07-12 | Clewer Oy | Bioreactor and method for the biological purification of water |
US7682503B1 (en) * | 2005-11-04 | 2010-03-23 | Joe Norris | Filtration and surge with no moving parts |
-
2011
- 2011-11-04 FI FI20116093A patent/FI20116093L/en not_active IP Right Cessation
-
2012
- 2012-10-31 WO PCT/FI2012/051059 patent/WO2013064742A1/en active Application Filing
- 2012-11-02 AR ARP120104106 patent/AR088623A1/en not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5853578A (en) * | 1996-07-10 | 1998-12-29 | Flyaks; Nina | Method for biological purification of liquids and biological filter for purification of liquids |
US7682503B1 (en) * | 2005-11-04 | 2010-03-23 | Joe Norris | Filtration and surge with no moving parts |
WO2007077298A1 (en) | 2006-01-04 | 2007-07-12 | Clewer Oy | Bioreactor and method for the biological purification of water |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105145461A (en) * | 2015-09-30 | 2015-12-16 | 中国科学院海洋研究所 | Rising and falling flow culture facility suitable for juvenile mollusk culture |
CN105660508A (en) * | 2016-03-11 | 2016-06-15 | 江苏元中直流微电网有限公司 | Home intelligent fish tank capable of being controlled remotely |
US10961140B2 (en) | 2017-04-24 | 2021-03-30 | Clewer Aquaculture Oy | Bioreactor with moving carriers |
RU178125U1 (en) * | 2017-12-18 | 2018-03-23 | Николай Михайлович Белковский | Closed-water hatchery |
CN108203207A (en) * | 2018-01-30 | 2018-06-26 | 苏州农业职业技术学院 | A kind of farm water circulation of culture zone rain dirt separation utilizes system |
Also Published As
Publication number | Publication date |
---|---|
AR088623A1 (en) | 2014-06-25 |
FI20116093L (en) | 2013-05-05 |
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