CN111847669A - Integrated circulating type floating bed fish-vegetable symbiotic system - Google Patents
Integrated circulating type floating bed fish-vegetable symbiotic system Download PDFInfo
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- CN111847669A CN111847669A CN202010788800.XA CN202010788800A CN111847669A CN 111847669 A CN111847669 A CN 111847669A CN 202010788800 A CN202010788800 A CN 202010788800A CN 111847669 A CN111847669 A CN 111847669A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 98
- 241000251468 Actinopterygii Species 0.000 claims abstract description 39
- 235000013311 vegetables Nutrition 0.000 claims abstract description 30
- 239000012528 membrane Substances 0.000 claims abstract description 28
- 239000000945 filler Substances 0.000 claims abstract description 18
- 238000006213 oxygenation reaction Methods 0.000 claims abstract description 14
- 230000001546 nitrifying effect Effects 0.000 claims abstract description 8
- 238000009395 breeding Methods 0.000 claims description 21
- 230000001488 breeding effect Effects 0.000 claims description 21
- 238000005273 aeration Methods 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 238000000746 purification Methods 0.000 claims description 4
- 230000010354 integration Effects 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 11
- 239000001301 oxygen Substances 0.000 abstract description 11
- 229910052760 oxygen Inorganic materials 0.000 abstract description 11
- 239000010865 sewage Substances 0.000 abstract description 10
- 239000008213 purified water Substances 0.000 abstract description 9
- 229910002651 NO3 Inorganic materials 0.000 abstract description 5
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 abstract description 5
- IOVCWXUNBOPUCH-UHFFFAOYSA-N Nitrous acid Chemical compound ON=O IOVCWXUNBOPUCH-UHFFFAOYSA-N 0.000 abstract description 4
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 abstract description 4
- 238000011218 seed culture Methods 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 230000009471 action Effects 0.000 description 9
- 241000196324 Embryophyta Species 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- 238000009360 aquaculture Methods 0.000 description 5
- 244000144974 aquaculture Species 0.000 description 5
- 230000005484 gravity Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 210000003608 fece Anatomy 0.000 description 3
- 235000015097 nutrients Nutrition 0.000 description 3
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 2
- 241000108664 Nitrobacteria Species 0.000 description 2
- 230000033558 biomineral tissue development Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
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- 240000007124 Brassica oleracea Species 0.000 description 1
- 235000003899 Brassica oleracea var acephala Nutrition 0.000 description 1
- 235000011301 Brassica oleracea var capitata Nutrition 0.000 description 1
- 235000001169 Brassica oleracea var oleracea Nutrition 0.000 description 1
- 241000276707 Tilapia Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000005276 aerator Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000001651 autotrophic effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000012258 culturing Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- 230000018109 developmental process Effects 0.000 description 1
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- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000012544 monitoring process Methods 0.000 description 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
- 235000015816 nutrient absorption Nutrition 0.000 description 1
- 235000013348 organic food Nutrition 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
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- 230000004083 survival effect Effects 0.000 description 1
- 230000031068 symbiosis, encompassing mutualism through parasitism Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
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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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G31/00—Soilless cultivation, e.g. hydroponics
- A01G31/02—Special apparatus therefor
-
- 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
- A01K63/003—Aquaria; Terraria
-
- 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
- A01K63/003—Aquaria; Terraria
- A01K63/006—Accessories for aquaria or terraria
-
- 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
-
- 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
- A01K63/042—Introducing gases into the water, e.g. aerators, air pumps
-
- 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
- A01K63/045—Filters for aquaria
-
- 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
- A01K63/047—Liquid pumps for aquaria
-
- 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
- C02F3/102—Permeable membranes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- 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
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Marine Sciences & Fisheries (AREA)
- Animal Husbandry (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention discloses an integrated circulating type floating bed fish and vegetable symbiotic system.A nitrifying device is arranged in a culture pond and comprises a tank body, a supporting net is arranged at the bottom in the tank body, membrane hanging filler is filled in the tank body on the supporting net, an aerating device is arranged in the tank body below the supporting net and is connected with an oxygenation pump, a sewage discharge pipe is arranged at the bottom end of the tank body, a water inlet is arranged at the bottom of the side wall of the tank body and is communicated with the culture pond, a membrane type filter bag is arranged at the top in the tank body and is also filled with the membrane hanging filler, a submersible pump is arranged in the membrane type filter bag, an outlet of the submersible pump is connected with a main purified water outlet pipe, the main purified water outlet pipe extends into the culture pond, and the main purified water outlet pipe. Can realize the conversion of ammonia nitrogen and nitrous acid into nitrate which is easy to be absorbed by plants and has little harm to fishes, further realize the virtuous circle of seed culture, has high oxygen utilization rate, less power consumption and simple equipment, and is suitable for large-scale popularization.
Description
Technical Field
The invention relates to an integrated circulating floating bed fish and vegetable symbiotic system, and belongs to the field of seed culture equipment.
Background
With the development of social economy and the improvement of the living standard of people, the demand of consumers on aquatic products is gradually improved in quality and quantity, and the aquaculture industry in China also tends to develop rapidly, but the traditional aquaculture industry generates a large amount of aquaculture wastewater, the water quality of aquaculture water needs to be ensured by a water changing mode, so that the water resource is wasted, and the water body pollution is caused. The fish and vegetable symbiotic system which is harmless and can self-certify that the fish culture does not change water and plant vegetables, not only solves the problems of culture water pollution and waste of water resources, but also produces a plurality of organic foods such as various ecological fishes and vegetables, enriches the cabbage seeds of people, and ensures the food safety of people.
In order to realize reasonable combination and large-scale planting and breeding of fish and vegetables, it is common practice to separate a fish pond and a cultivation area. The fish-vegetable symbiotic system can be divided into substrate cultivation, floating raft cultivation (or floating bed cultivation), nutrient film pipeline cultivation and air fog cultivation according to the arrangement of a cultivation vegetable planting area, wherein the floating raft cultivation (or floating bed cultivation) is to plant vegetables on the water surface of a culture pond, the vegetables are supported by floating materials such as foam and the like, the roots of the vegetables downwards extend to water through holes of the floating rafts to absorb nutrients, and the fish-vegetable symbiotic system has the advantages of low maintenance cost, sufficient nutrient absorption, good landscape effect and the like, so that the fish-vegetable symbiotic system is concerned.
Patent document No. 201710536202.1 discloses a fish-vegetable symbiotic three-dimensional cultivation system, which effectively increases the unit plantable area by making full use of the position, but does not consider NH in the cultivation water3-N and NO2 -The influence of-N on fish, it is difficult to ensure long-term virtuous cycle of the system. The invention patent with the patent number of 201420855362.4 and the invention patent document with the application number of 201410839131.9 disclose a fish and vegetable symbiotic system and a use control method thereof, and although nitrification of culture water can be better realized through an anaerobic mineralization pond, an aerobic mineralization pond and a mobile biofilm reactor, and water quality is guaranteed to obtain virtuous cycle, the system has the defects of complex composition, low oxygen utilization rate, long flow path, large power consumption and the like.
The invention patent with application number 201910676699.6 discloses a fish-plant symbiotic system, which can ensure the water quality safety through the functional partition of a water quality treatment unit, but has the disadvantages of long sewage treatment flow, more pools and complex composition, and the nitrification function of a nitrification device is difficult to fully exert because the water flow of the nitrification device is from top to bottom, the hydraulic retention time is short, and no filler allows nitrobacteria to be attached and grow.
Some current fish and vegetable symbiotic systems (or devices) focus on improving planting density, but neglect the requirement of water quality treatment; some consider the requirement of water quality treatment, but have the disadvantages of complex system composition, low oxygen utilization rate, long flow, large power consumption and the like. Therefore, a fish and vegetable symbiotic system with simple composition, complete nitrification, high oxygen utilization rate and low power consumption is urgently needed to be developed.
In order to ensure the virtuous cycle of the fish and vegetable symbiosis system, the water treatment device is very important. The ammonia is discharged from the fish through the branchia, the fish feces is discharged through the digestion system, the residual fish feed and the like can deteriorate the water quality, the survival and the propagation of the fish are not facilitated, particularly, pollutant ammonia and nitrite can generate toxic action on the fish, so that a symbiotic system with a nitrification system needs to be developed to convert the ammonia and nitrite in the culture water into nitrate which is easy to be absorbed by plants and has small harm to the fish, and further virtuous cycle is realized.
Disclosure of Invention
In view of the above technical problems, the present invention aims to provide an integrated circulating floating bed fish-vegetable symbiotic system, which can convert ammonia nitrogen and nitrous acid in the aquaculture water into nitrate that is easily absorbed by plants and has little harm to fish, so as to realize virtuous cycle, and has high oxygen utilization rate and low power consumption.
In order to achieve the purpose, the technical scheme of the invention is as follows: the utility model provides a circulating bed fish and vegetable intergrowth system that floats of integration, is including breeding the pond it floats the bed, its characterized in that to be provided with kind of dish in breeding the pond: still be provided with the device of nitrifying in breeding the pond, nitrify the device and include a jar body the internal bottom of jar is provided with the supporting network, the internal membrane filler that hangs that is filled with of jar of supporting network top, the internal aeration equipment that is provided with of jar of supporting network below, aeration equipment links to each other with the oxygenation pump, the bottom of the jar body is provided with the blow off pipe, the lateral wall bottom of the jar body is provided with the water inlet, water inlet and breeding pond UNICOM, the internal top of jar is provided with the membrane type and crosses the filter bag, also fill in the membrane type filter bag and hang the membrane filler, be provided with the immersible pump in the membrane type filter bag, the export of immersible pump is responsible for with the water outlet of water purification and is linked to each other, the water outlet of water is responsible for stretching from.
In the scheme, the method comprises the following steps: and a valve is arranged on the water inlet. When the nitrification device discharges sewage, the valve is closed, and the water in the culture pond is prevented from being discharged.
For preventing NH in the water body of the culture pond3-N and NO2-And (4) accumulating N, arranging a nitrifying device in a culture pond of a fish-vegetable symbiotic system, and filling materials in a nitrifying tank and a membrane type filter bag to ensure the attached growth and interception of autotrophic bacteria-nitrifying bacteria. Under the action of the submersible pump, water in the culture pond enters the nitrification device through the water inlet, is treated by the biofilm culturing filler and the membrane type filter bag, and is discharged from the clean water outlet main pipe, meanwhile, the aeration device aerates the nitrification device, and oxygen which is not fully utilized enters the culture pond along with the outlet water so as to meet the growth requirements of fishes and floating bed plants. By the circulation, the filter-pressing culture wastewater is finally realized, and meanwhile, the ammonia nitrogen and the nitrous acid in the culture water are converted into the nitrate which is easy to be absorbed by plants and has small harm to fishes, so that the virtuous cycle of seed culture is realized, and the oxygen utilization rate is improved. The membrane type filter bag can also prevent falling bodies such as biomembranes and the like from blocking the purification water outlet pipe.
According to the change of the operation power of the submersible pump, sewage is discharged for 1 time approximately every 15d (when the power of the submersible pump is 1.5 times larger than that in normal operation), namely, the submersible pump and the oxygenation pump are closed, and a valve on a water inlet is closed. And opening the sewage discharge pipe, and discharging the biofilm, the residue and the like falling off in the nitrification device under the gravity of water.
In the scheme, the film forming filler is a polyhedral porous hollow sphere plastic filler. The density is small, the weight is light, not only the environment is provided for the growth and interception of nitrobacteria, but also the oxygen bubbles can be cut, the formation of water flow turbulence is facilitated, the mass transfer of oxygen and nutrients is enhanced, and the exertion of the nitrification function is ensured.
In the scheme, the method comprises the following steps: the two water outlet branch pipes are connected to the main water outlet pipe, are parallel to the water surface of the culture pond and are separated by 180 degrees, and extend to the edge of the culture pond. The effluent of the nitrification device enters the culture pond along the tangential direction of the culture pond under the action of the submersible pump to generate swirling flow. The fish manure and the residue in the culture pond enter the nitrification device from the water inlet hole under the action of vortex generated by hydraulic vortex of the culture pond, air flow generated by the oxygenation pump and suction of the submersible pump, are degraded and nitrified under the action of microorganisms, and water in the whole culture pond can move under the inertia generated by the vortex only by using small power, so that dead corners are avoided, and virtuous cycle is realized.
In the scheme, the method comprises the following steps: the two water outlet branch pipes are positioned 0.3-0.5m below the water surface of the culture pond.
In the scheme, the method comprises the following steps: the nitrification device is made of non-light-transmitting materials, and the top end of the tank body is provided with a sealing cover. The nitrifying device is made of non-light-transmitting materials, so that good growth of nitrifying bacteria is guaranteed, and the nitrifying bacteria are prevented from being influenced by light. The sealing cover is added, so that the filler is conveniently filled and the sealing effect is realized.
In the scheme, the method comprises the following steps: the bottom of the culture pond is in a round table shape, the center of the bottom of the culture pond is provided with a hole matched with the tank body of the nitrification device, and the side face of the round table shape is an inclined plane inclined from the edge to the center by a gradient of 0.01-0.02.
Nitrify device's jar body from the top down be jar oral area, the jar shoulder of round platform shape, columniform jar body and conical tank bottoms portion in proper order, the diameter of the jar body matches with the bottom of the pool trompil of breeding the pond, the jar bottom of the jar body stretches to outside breeding the pond from the bottom trompil of breeding the pond, the supporting network sets up in jar body bottom, the water inlet also sets up in jar body bottom. The water in the culture pond can conveniently enter the nitrification device.
In the scheme, the method comprises the following steps: the aeration device is an annular aeration pipe, and the annular aeration pipe is connected with the oxygenation pump.
In the scheme, the height of the membrane type filter bag is not more than 1/2 of the depth of the tank body.
Has the advantages that: the integrated circulating floating bed fish-vegetable symbiotic system can convert ammonia nitrogen and nitrous acid into nitrate which is easy to be absorbed by plants and has small harm to fishes, further realizes virtuous cycle of seed culture, has high oxygen utilization rate, low power consumption and simple equipment, and is suitable for large-scale popularization.
Drawings
Fig. 1 is a top view of the present invention.
Fig. 2 is a vertical sectional view (nitrification apparatus water intake state).
Detailed Description
The invention will be further illustrated by the following examples in conjunction with the accompanying drawings:
in embodiment 1, as shown in fig. 1-2, the integrated circulating floating bed fish-vegetable symbiotic system of the invention comprises a culture pond 1, a seed vegetable floating bed 2, a nitrification device, a tank 3, a support net 4, a membrane-hanging filler 5, an aeration device 6, an oxygenation pump 7, a sewage discharge pipe 8, a membrane type filter bag 9, a main purified water outlet pipe 10, a branch water outlet pipe 11 and a submersible pump 12.
In this embodiment, the culture pond 1 includes a cylindrical pond body, the bottom of which is in a circular truncated cone shape, the center of the bottom of which is provided with a hole matched with the tank body of the nitrification device, and the side surface of the circular truncated cone shape is an inclined surface inclined from the edge to the center at a gradient of 0.01-0.02. Of course, the culture pond can be in other shapes. No matter what the shape is, the bottom surface is designed into an inclined surface inclined from the edge to the middle, and the center of the bottom surface is provided with a hole for installing the nitrification device. A vegetable planting floating bed 2 is arranged in the culture pond 1, and the structure of the vegetable planting floating bed 2 is the prior art.
A nitrification device is arranged in the culture pond 1, a tank body of the nitrification device is made of non-light-transmitting materials, and a sealing cover is arranged at the top end of the tank body. The nitrification device comprises a tank body 3, a supporting net 4 is arranged at the bottom in the tank body 3, a biofilm carrier 5 is filled in the tank body 3 above the supporting net 4, an aeration device 6 is arranged in the tank body 3 below the supporting net 4, the aeration device 6 is an annular aeration pipe, the aeration device 6 is connected with an oxygenation pump 7, a drain pipe 8 is arranged at the bottom end of the tank body 3, and a valve is arranged on the drain pipe 8. The lateral wall bottom of the jar body 3 is provided with the water inlet, installs the valve (not shown in the figure) on the water inlet, and the water inlet is linked together with the breed pond 1, and the top in the jar body 3 is provided with the diaphragm type and crosses filter bag 9, prevents that the stripping body such as biomembrane from blockking up the purification outlet pipe. The membrane filter bag 9 has a height no greater than 1/2 the depth of the can. The film-type filter bag 9 is also filled with a film-forming filler 5, and the film-forming filler 5 is a polyhedral porous hollow sphere plastic filler.
A submersible pump 12 is arranged in the membrane type filter bag 9, the outlet of the submersible pump 12 is connected with a main purified water outlet pipe 10, the main purified water outlet pipe 10 extends into the culture pond 1 from the top end of the membrane type filter bag 9, and the main purified water outlet pipe 10 is positioned below the vegetable growing floating bed 2. Preferably, two water outlet branch pipes 11 are connected to the main purified water outlet pipe 10, the two water outlet branch pipes 11 are parallel to the water surface of the culture pond 1 and are separated by 180 degrees, and the two water outlet branch pipes 11 extend to the edge of the culture pond 1 and are located at a position 0.3-0.5m below the water surface.
For the convenience of breeding the water entering nitrification device in the pond 1, nitrify the jar body from the top down of device and be jar oral area, the jar shoulder of round platform shape, columniform jar body portion and conical tank bottoms portion in proper order, the diameter of the jar body portion of the jar body matches with the bottom of the pool trompil of breeding pond 1, the tank bottoms of the jar body 3 stretches to breeding outside the pond 1 from the bottom trompil of breeding pond 1, the supporting network 4 sets up in jar body bottom, the water inlet also sets up in jar body bottom.
When the device is in normal operation, the water in the culture pond 1 in the nitrification device is filled with water under the action of gravity, the submersible pump 12 and the oxygenation pump 7 in the membrane type filter bag 9 are started, the upper valve of the water inlet is opened, the drain pipe 8 is closed, the outlet water of the nitrification device enters the culture pond 1 along the tangential direction of the culture pond 1 under the action of the submersible pump 12 to generate swirling flow, the fish manure and residues in the culture pond 1 enter the nitrification device from the water inlet hole under the action of the swirl generated by the hydraulic swirling flow of the culture pond 1, the air flow generated by the oxygenation pump 7 and the suction action of the submersible pump 12 to be degraded and nitrified under the action of microorganisms, the oxygen which is not fully utilized enters the culture pond 1 along with the outlet water to meet the requirements of growth of fishes and floating bed plants, and the water in the whole culture pond 1 can move under the inertia generated by swirling flow with small power, so that dead.
And when in pollution discharge, the submersible pump 12, the oxygenation pump 7 and the valves on the water inlet are closed. The sewage discharge pipe 8 is opened, and the biomembrane, the residue and the like falling off in the nitrification device are discharged under the gravity of water.
Experiment: the diameter of the culture pond is 6m, and the height of the culture pond is 1.9 m. The diameter of the nitrification device in the culture pond is 1.07m, and the height of the nitrification device in the culture pond is 1.58 m. And (4) breeding tilapia in the breeding pond. A membrane type filter bag with the diameter of D450mm and the height of 500mm is arranged in the tank body 3, and a submersible pump and a main pipe for purified water outlet are arranged in the membrane type filter bag. PP multi-surface hollow sphere plastic filler with small density, light weight and 50mm diameter is filled in the support net and the membrane type filter bag in the tank body 3, and the nitrification device is sealed by a sealing cover. And (3) manufacturing floating beds in the culture pond 1 by using high-quality greening plastics as carriers, wherein the scale of each floating bed is 1m multiplied by 0.5m multiplied by 0.09m and 24 holes, the number of the floating beds is 25, and the number of the floating beds is 600, and celery is planted. The submersible pump is an ultra-large flow low-lift axial-flow pump MD-40T, and the aerator is a DO-906, and the gas production rate is 50L/min.
The study was conducted for 2 months under the conditions of air temperature of 30. + -. 5 ℃, water temperature of 26. + -. 3 ℃ and pH of 7.5. + -. 0.3. When the nitrification apparatus is in initial operation, the nitrification apparatus is filled with water, the submersible pump and the oxygenation pump in the membrane type filter bag are started, the valve on the water inlet is opened, and the sewage discharge pipe is closed. During the first 1 week, water quality monitoring indicated NH3-N、NO2-N-Some accumulation of NH3the-N concentration is accumulated even to about 0.3mg/L, the feeding of fish food is reduced, the aeration rate is increased for about 1 week, the original feeding and aeration rate is recovered for about 1 week, the DO is always kept at about 3mg/L during the period, the operation is repeated for 3 cycles (total 42 days), and NH in the culture pond3-N、NO2-N-And NO3-N-The concentrations are 0.05-0.1mg/L, 0.05-0.1mg/L and 3-50mg/L respectively, so that the whole fish and vegetable symbiotic system operates normally and reaches a balanced and stable state. According to the change of the operation power of the submersible pump, sewage is discharged for 1 time approximately every 15d (when the power of the submersible pump is 1.5 times larger than that in normal operation), namely, the submersible pump, the oxygenation pump and a valve on a water inlet are closed, a sewage discharge pipe is opened, and the biofilm, the residue and the like falling off in the nitrification device are discharged under the gravity of water.
The present invention is not limited to the above-described embodiments, and those skilled in the art will understand that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. The utility model provides a circulating bed fish and vegetable intergrowth system that floats of integration, is including breeding the pond it floats the bed, its characterized in that to be provided with kind of dish in breeding the pond: still be provided with the device of nitrifying in breeding the pond, nitrify the device and include a jar body the internal bottom of jar is provided with the supporting network, the internal membrane filler that hangs that is filled with of jar of supporting network top, the internal aeration equipment that is provided with of jar of supporting network below, aeration equipment links to each other with the oxygenation pump, the bottom of the jar body is provided with the blow off pipe, the lateral wall bottom of the jar body is provided with the water inlet, water inlet and breeding pond UNICOM, the internal top of jar is provided with the membrane type and crosses the filter bag, also fill in the membrane type filter bag and hang the membrane filler, be provided with the immersible pump in the membrane type filter bag, the export of immersible pump is responsible for with the water outlet of water purification and is linked to each other, the water outlet of water is responsible for stretching from.
2. The integrated circulating type floating bed fish and vegetable symbiotic system according to claim 1, wherein: the film-forming filler is a multi-surface porous hollow sphere plastic filler.
3. The integrated circulating type floating bed fish and vegetable symbiotic system according to claim 2, wherein: and a valve is arranged on the water inlet.
4. The integrated circulating type floating bed fish and vegetable symbiotic system according to claim 3, wherein: the two water outlet branch pipes are connected to the main water outlet pipe, are parallel to the water surface of the culture pond and are separated by 180 degrees, and extend to the edge of the culture pond.
5. The integrated circulating type floating bed fish and vegetable symbiotic system according to claim 4, wherein: the two water outlet branch pipes are positioned 0.3-0.5m below the water surface of the culture pond.
6. The integrated circulating type floating bed fish and vegetable symbiotic system according to any one of claims 1 to 5, wherein: the nitrification device is made of non-light-transmitting materials, and the top end of the tank body is provided with a sealing cover.
7. The integrated circulating type floating bed fish and vegetable symbiotic system according to claim 6, wherein: the bottom of the culture pond is in a round table shape, the center of the bottom of the culture pond is provided with a hole matched with the tank body of the nitrification device, and the side face of the round table shape is an inclined plane inclined from the edge to the center by a gradient of 0.01-0.02.
8. The integrated circulating type floating bed fish and vegetable symbiotic system according to claim 7, wherein: nitrify device's jar body from the top down be jar oral area, the jar shoulder of round platform shape, columniform jar body and conical tank bottoms portion in proper order, the diameter of the jar body matches with the bottom of the pool trompil of breeding the pond, the jar bottom of the jar body stretches to outside breeding the pond from the bottom trompil of breeding the pond, the supporting network sets up in jar body bottom, the water inlet also sets up in jar body bottom.
9. The integrated circulating type floating bed fish and vegetable symbiotic system according to claim 8, wherein: the aeration device is an annular aeration pipe, and the annular aeration pipe is connected with the oxygenation pump.
10. The integrated circulating type floating bed fish and vegetable symbiotic system according to claim 9, wherein: the membrane filter bag has a height no greater than 1/2 the depth of the can.
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