CN113620542B - Eel breeding tail water treatment method and system - Google Patents
Eel breeding tail water treatment method and system Download PDFInfo
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- CN113620542B CN113620542B CN202111056159.1A CN202111056159A CN113620542B CN 113620542 B CN113620542 B CN 113620542B CN 202111056159 A CN202111056159 A CN 202111056159A CN 113620542 B CN113620542 B CN 113620542B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 109
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000009395 breeding Methods 0.000 title description 2
- 230000001488 breeding effect Effects 0.000 title description 2
- 210000003608 fece Anatomy 0.000 claims abstract description 31
- 238000000926 separation method Methods 0.000 claims abstract description 29
- 239000002245 particle Substances 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 239000013618 particulate matter Substances 0.000 claims abstract description 18
- 238000000746 purification Methods 0.000 claims abstract description 14
- 239000008394 flocculating agent Substances 0.000 claims abstract description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 6
- 235000013305 food Nutrition 0.000 claims description 6
- 239000013049 sediment Substances 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 6
- 230000009286 beneficial effect Effects 0.000 claims description 5
- 238000004064 recycling Methods 0.000 claims description 5
- 238000007711 solidification Methods 0.000 claims description 5
- 230000008023 solidification Effects 0.000 claims description 5
- 239000010419 fine particle Substances 0.000 claims description 4
- 241000251468 Actinopterygii Species 0.000 claims description 3
- 241000894006 Bacteria Species 0.000 claims description 3
- 241000195493 Cryptophyta Species 0.000 claims description 3
- 241000282326 Felis catus Species 0.000 claims description 3
- 241000237536 Mytilus edulis Species 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 239000003337 fertilizer Substances 0.000 claims description 3
- 238000005189 flocculation Methods 0.000 claims description 3
- 230000016615 flocculation Effects 0.000 claims description 3
- 230000014759 maintenance of location Effects 0.000 claims description 3
- 235000020638 mussel Nutrition 0.000 claims description 3
- 230000002550 fecal effect Effects 0.000 claims 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 239000013505 freshwater Substances 0.000 claims 1
- -1 quatic Species 0.000 claims 1
- 238000009360 aquaculture Methods 0.000 abstract description 5
- 244000144974 aquaculture Species 0.000 abstract description 5
- 239000000284 extract Substances 0.000 abstract 1
- 239000010802 sludge Substances 0.000 description 5
- 102000004169 proteins and genes Human genes 0.000 description 4
- 108090000623 proteins and genes Proteins 0.000 description 4
- 241000252073 Anguilliformes Species 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- MWKXCSMICWVRGW-UHFFFAOYSA-N calcium;phosphane Chemical compound P.[Ca] MWKXCSMICWVRGW-UHFFFAOYSA-N 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 208000035143 Bacterial infection Diseases 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000006228 supernatant 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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K10/00—Animal feeding-stuffs
- A23K10/20—Animal feeding-stuffs from material of animal origin
- A23K10/26—Animal feeding-stuffs from material of animal origin from waste material, e.g. feathers, bones or skin
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23K—FODDER
- A23K50/00—Feeding-stuffs specially adapted for particular animals
- A23K50/40—Feeding-stuffs specially adapted for particular animals for carnivorous animals, e.g. cats or dogs
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F7/00—Fertilisers from waste water, sewage sludge, sea slime, ooze or similar masses
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/12—Granules or flakes
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5263—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using natural chemical compounds
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- 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
- 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
-
- 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
-
- 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
- C02F3/325—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae use of algae as symbiotic combination of algae and bacteria
-
- 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
- C02F3/327—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae characterised by animals and plants
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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- Pest Control & Pesticides (AREA)
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- Marine Sciences & Fisheries (AREA)
- Biodiversity & Conservation Biology (AREA)
- Birds (AREA)
- Farming Of Fish And Shellfish (AREA)
Abstract
The invention discloses a method and a system for treating tail water of eel culture, wherein the method firstly extracts the tail water into a residual bait and feces collection pool, carries out harmless separation and collection of particulate matters, and finally realizes resource utilization; then, draining tail water after separating particles into a floccule collecting tank for sprinkling a flocculating agent to form floccules, and solidifying and collecting the floccules; finally, the tail water collected by the flocculate is discharged into a biological purifying tank for biological purification until reaching the discharge standard. The system comprises a residual bait and feces collecting tank, a fine particulate matter separating and collecting device, a flocculate collecting tank, a solid-liquid separating tank and a biological purifying tank. The method or the system can ensure that the treated tail water is discharged up to standard, meets the green development concept of the aquaculture industry, is not limited to be used for treating eel culture tail water, and can be widely used for treating other aquatic product culture tail water and treating town rivers and lakes.
Description
Technical Field
The invention relates to the technical field of eel culture tail water purification, in particular to a eel culture tail water treatment method and system.
Background
Eel grows in natural water quality environment of natural sea area, human beings catch eel and concentrate in indoor big-arch shelter bionical attitude high density breed, because eel in the aquaculture variety is relatively high to the demand of calcium phosphorus, and the raiser has added the calcium phosphorus element in the fodder, and the phosphorus content in the eel fodder is more than 0.8mg/L through the detection of aquaculture water body and pushes out. After high-density feeding, a large amount of eel excrement rapidly pollutes the culture water body, and nitrogen and phosphorus substances in the culture residual bait excrement seriously influence the growth of eels, so that bacterial diseases are bred. In order to simulate the natural growth environment of sea eels, farmers can only regularly and quantitatively change water, dilute and aerate, and discharge the residual bait and feces of eels, so that the ecological environment is damaged.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a method and a system for treating eel culture tail water, and the treated tail water can be discharged up to the standard by the method or the system, so that the green development concept of the culture industry is satisfied.
To achieve the above object, as one aspect of the present invention, there is provided:
a eel culture tail water treatment method comprises the following steps:
s1, independently extracting tail water into a residual bait and feces collection pool, and separating and collecting particles in the tail water in the residual bait and feces collection pool;
s2, draining tail water after separating particles into a floccule collecting tank, spraying a flocculating agent to form floccules, and solidifying and collecting the floccules;
s3, discharging the tail water collected by the flocculate into a biological purifying tank for biological purification until reaching the emission standard.
In order to more clearly describe the eel culture tail water treatment method, the following scheme can be adopted:
preferably, the method further comprises the following steps before the tail water after separating the particles is led into a flocculation collection tank for spraying flocculant in the step S2:
s101, performing solidification treatment on the separated particles so as to prepare for recycling.
In order to more clearly describe the eel culture tail water treatment method, the following scheme can be adopted:
the granules after the solidification treatment in S101 are used as fertilizer or cat food and dog food.
In order to more clearly describe the eel culture tail water treatment method, the following scheme can be adopted:
the flocculant in S2 comprises a biological protein flocculant and a polyaluminum chloride flocculant, and the adding sequence is that the biological protein flocculant and the polyaluminum chloride flocculant are added first.
In order to more clearly describe the eel culture tail water treatment method, the following scheme can be adopted:
and S3, putting mussels, fishes, beneficial bacteria and algae and aquatic plants into the biological purifying tank.
In order to more clearly describe the eel culture tail water treatment method, the following scheme can be adopted:
and draining the water reaching the standard after being treated by the biological purification tank into an eel culture tank for recycling.
In order to more clearly describe the eel culture tail water treatment method, the following scheme can be adopted:
the total capacity of the residual bait and feces collection pool and the flocculate collection pool is more than 12 hours of tail water discharge, and the retention time of tail water in the residual bait and feces collection pool and the flocculate collection pool is not less than 1 hour.
As another aspect of the present invention, the following technical solution is further provided:
a eel culture tail water treatment system comprises a residual bait and feces collection tank, a fine particulate matter separation and collection device, a flocculate collection tank, a solid-liquid separation tank and a biological purification tank;
the residual bait and feces collection pool is used for containing tail water; the fine particulate matter separating and collecting device is placed in the residual bait and excrement collecting tank and is used for separating and collecting particulate matters in tail water in the residual bait and excrement collecting tank;
the flocculate collecting pool is communicated with the residual bait and excrement collecting pool and is used for receiving tail water after the particles are separated;
the solid-liquid separation tank is communicated with the floccule collecting tank and is used for solidifying and collecting floccules or separated particles;
the biological purification tank is communicated with the flocculate collecting tank and is used for receiving the tail water collected by the flocculate and/or the tail water separated by the solid-liquid separation tank.
In order to more clearly describe the eel culture tail water treatment method, the following scheme can be adopted:
the fine particulate matter separation and collection device comprises a plurality of collection bins, flow guide water passing windows are formed in the tops of two adjacent collection bins, and a filter screen assembly is arranged on each flow guide water passing window; the filter screen assembly comprises a movable sleeve, a frame and a filter screen; the movable sleeve is sleeved on a hanging rod at the top of the diversion water window and can rotate relative to the hanging rod; the filter screen is arranged on the frame, and the frame is connected to the movable sleeve.
Preferably, the bottom of the filter screen assembly in each collecting bin is connected in series by an elastic rubber strip.
Preferably, the mesh number of the filter screens arranged among the plurality of collecting bins is arranged from small to large according to the water flow direction.
It should be noted that: the fine particle separating and collecting device is used for slowing down the tail water with high flow rate, intercepting the residual bait and feces in the tail water and enabling the residual bait and feces to naturally precipitate in a collecting tank in the shortest time. When tail water overflows the top outer frame of the collecting tank quickly, the filter screen assembly rotates by an angle to achieve a quick decompression effect, residual bait and feces which are not completely precipitated are distributed to the next collecting bin for continuous precipitation, and when the mesh number of the filter screen is set from small to large according to the water flow direction, the residual bait and feces with large particles are precipitated firstly, and the granularity is gradually reduced according to the water flow direction.
Preferably, the mesh size of the filter screen is between 50 mesh and 300 mesh.
In order to more clearly describe the eel culture tail water treatment method, the following scheme can be adopted:
the solid-liquid separation tank comprises a tank body, wherein the tank body comprises a cylinder part and a cone part; the cone-shaped parts are arranged at the bottom of the cylinder part and are communicated with each other; one side of drum portion or cone portion is provided with a plurality of drain pipes, along the direction of height interval distribution between the plurality of drain pipes, all has the difference in height between the adjacent drain pipe, and all is provided with the drain valve on every drain pipe.
Preferably, a water level sensor is arranged in the solid-liquid separation tank.
Preferably, a sediment discharge valve is arranged at the bottom outlet of the cone-shaped part.
In order to more clearly describe the eel culture tail water treatment method, the following scheme can be adopted:
the bottom of the fine particulate matter separation and collection device is provided with a suction sludge pump, and the precipitated fine particulate matters are sucked into the solid-liquid separation tank through the suction sludge pump.
The beneficial effects of the invention are as follows: the method and the system can ensure that the treated tail water reaches the discharge standard, thereby meeting the green development concept of the aquaculture; the method and the system of the invention have the advantages of simple flow, low operation cost, low cost, small occupied area, easy operation and low operation cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.
FIG. 1 is a flow chart of a method for treating eel culture tail water according to an embodiment of the invention;
FIG. 2 is a schematic diagram of an eel culture tail water treatment system according to an embodiment of the invention;
FIG. 3 is a schematic diagram of a fine particulate matter separating and collecting apparatus according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a solid-liquid separation tank according to an embodiment of the present invention;
fig. 5 is a schematic view showing a structure of a fine particulate matter separating and collecting device according to an embodiment of the present invention placed in a residual bait and feces collection tank.
The reference numerals are explained as follows:
1. a residual bait and feces collection pool; 2. a fine particulate matter separation and collection device; 3. a floc collection tank; 4. A solid-liquid separation tank; 5. a biological purification tank; 6. a collecting bin; 7. a diversion water window; 8. a movable sleeve; 9. A frame; 10. a filter screen; 11. a hanging rod; 12. an elastic rubber strip; 13. a cylindrical portion; 14. a taper portion; 15. A drain pipe; 16. a drain valve; 17. a water level sensor; 18. a sediment discharge valve; 19. and sucking the sludge pump.
Detailed Description
Embodiments of the technical scheme of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present invention, and thus are merely examples, and are not intended to limit the scope of the present invention.
It is noted that unless otherwise indicated, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.
Referring to fig. 1, as an aspect of the present invention, there is provided a method for treating tail water of eel culture, comprising the steps of:
s1, independently extracting tail water into a residual bait and feces collection pool, and separating and collecting particles in the tail water in the residual bait and feces collection pool;
s2, draining tail water after separating particles into a floccule collecting tank, spraying a flocculating agent to form floccules, and solidifying and collecting the floccules;
s3, discharging the tail water collected by the flocculate into a biological purifying tank for biological purification until reaching the emission standard.
Alternative embodiments may also be:
preferably, the method further comprises the following steps before the tail water after separating the particles is led into a flocculation collection tank for spraying flocculant in the step S2:
s101, performing solidification treatment on the separated particles so as to prepare for recycling.
Alternative embodiments may also be:
the granules after the solidification treatment in S101 are used as fertilizer or cat food and dog food.
Alternative embodiments may also be:
the flocculant in S2 comprises a biological protein flocculant and a polyaluminum chloride flocculant, and the adding sequence is that the biological protein flocculant and the polyaluminum chloride flocculant are added first.
Alternative embodiments may also be:
and S3, putting mussels, fishes, beneficial bacteria and algae and aquatic plants into the biological purifying tank.
Alternative embodiments may also be:
and draining the water reaching the standard after being treated by the biological purification tank into an eel culture tank for recycling.
Alternative embodiments may also be:
the total capacity of the residual bait and feces collection pool and the flocculate collection pool is more than 12 hours of tail water discharge, and the retention time of tail water in the residual bait and feces collection pool and the flocculate collection pool is not less than 1 hour.
As another aspect of the present invention, the following technical solution is further provided:
as shown in fig. 2, the eel culture tail water treatment system comprises a residual bait and feces collection tank 1, a fine particulate matter separation and collection device 2, a flocculate collection tank 3, a solid-liquid separation tank 4 and a biological purification tank 5;
the residual bait and feces collection pool 1 is used for containing tail water; the fine particle separating and collecting device 2 is placed in the residual bait and feces collecting tank 1 and is used for separating and collecting particles in tail water in the residual bait and feces collecting tank 1;
the flocculate collecting pool 3 is communicated with the residual bait and excrement collecting pool 1 and is used for receiving tail water after separating particles;
the solid-liquid separation tank 4 is communicated with the floccule collecting tank 3 and is used for solidifying and collecting floccules or separated particles;
and the biological purifying tank 5 is communicated with the flocculate collecting tank 3 and is used for receiving the tail water after flocculate collection and/or the tail water separated by the solid-liquid separation tank 4.
Alternative embodiments may also be:
as shown in fig. 3, the fine particulate matter separating and collecting device 2 comprises a plurality of collecting bins 6, the tops of two adjacent collecting bins 6 are provided with flow guiding water passing windows 7, and the flow guiding water passing windows 7 are provided with filter screen 10 components; the filter screen 10 assembly comprises a movable sleeve 8, a frame 9 and a filter screen 10; the movable sleeve 8 is sleeved on the hanging rod 11 at the top of the diversion water window 7 and can rotate relative to the hanging rod 11; the filter screen 10 is arranged on the frame 9, and the frame 9 is connected to the movable sleeve 8.
Preferably, the bottom of the screen 10 assembly in each collection bin 6 is connected in series by a resilient rubber strip 12.
Preferably, the number of the filter screens 10 arranged among the plurality of collecting bins 6 is from small to large according to the water flow direction.
It should be noted that: the fine particulate matter separating and collecting device 2 is used for slowing down the tail water with high flow rate, intercepting the residual bait and feces in the tail water and enabling the residual bait and feces to naturally precipitate in a collecting tank in the shortest time. When tail water overflows the outer frame at the top of the collecting tank quickly, the filter screen 10 assembly rotates by an angle to achieve a quick decompression effect, residual bait and feces which are not completely precipitated are distributed to the next collecting bin 6 for continuous precipitation, and when the number of the filter screen 10 meshes is set from small to large according to the water flow direction, the residual bait and feces with large particles are precipitated firstly, and the granularity is gradually reduced according to the water flow direction.
Preferably, the mesh size of the screen 10 is between 50 mesh and 300 mesh.
Alternative embodiments may also be:
as shown in fig. 4, the solid-liquid separation tank 4 includes a tank body including a cylindrical portion 13 and a tapered portion 14; the tapered portions 14 are provided at the bottom of the cylindrical portion 13 and communicate with each other; a plurality of drain pipes 15 are arranged on one side of the cylinder part 13 or the cone part 14, the plurality of drain pipes 15 are distributed at intervals along the height direction, the adjacent drain pipes 15 have height differences, and each drain pipe 15 is provided with a drain valve 16.
It should be noted that, the main purpose of designing multiple drain valves 16 at multiple heights is to detect, find accurate sediment deposition points, drain the supernatant in time, and obtain higher quality sediment dry matter.
Preferably, a water level sensor 17 is provided in the solid-liquid separation tank 4.
Preferably, the bottom outlet of the cone 14 is provided with a sediment discharge valve 18.
Alternative embodiments may also be:
as shown in fig. 5, the fine particulate matter separating and collecting apparatus 2 is placed in the residual bait and stool collecting tank 1, and a suction sludge pump 19 is provided at the bottom of the fine particulate matter separating and collecting apparatus 2, and the precipitated fine particulate matter is sucked into the solid-liquid separation tank 4 by the suction sludge pump 19.
The beneficial effects of the invention are as follows: by the method and the system, the treated tail water can reach the standard and be discharged, and the green development concept of the aquaculture is satisfied.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention, and are intended to be included within the scope of the appended claims and description.
Claims (8)
1. The eel culture tail water treatment method is characterized by comprising the following steps of:
s1, independently extracting tail water into a residual bait and feces collection pool, and separating and collecting particles in the tail water in the residual bait and feces collection pool;
s2, draining tail water after separating particles into a floccule collecting tank, spraying a flocculating agent to form floccules, and solidifying and collecting the floccules;
s3, discharging the tail water collected by the flocculate into a biological purifying tank for biological purification until reaching the emission standard;
the method further comprises the following steps before S2, the tail water after separating the particles is led into a flocculation collection tank for spraying flocculant:
s101, performing solidification treatment on the separated particles so as to prepare for recycling;
the solidified particles are used as cat food and dog food;
the total capacity of the residual bait and fecal collecting tank and the flocculate collecting tank is more than 12 hours of tail water discharge, and the retention time of tail water in the residual bait and fecal collecting tank and the flocculate collecting tank is not less than 1 hour;
wherein, the separation and collection of the particles in the tail water are completed by a fine particle separation and collection device, the fine particle separation and collection device comprises a plurality of collection bins, the top parts of two adjacent collecting bins are provided with flow guiding water passing windows, and the flow guiding water passing windows are provided with filter screen components; the filter screen component comprises a movable sleeve, a frame and a filter screen; the movable sleeve is sleeved on the hanging rod at the top of the diversion water window and can rotate relative to the hanging rod; the filter screen sets up on the frame, and the frame coupling is on movable sleeve, and wherein the mesh number of the filter screen that sets up between a plurality of collection storehouse is from small to big setting according to the rivers direction.
2. The method for treating tail water of eel culture according to claim 1, wherein the particulate matter solidified in S101 is used as a fertilizer.
3. The method for treating tail water of eel culture according to claim 1, wherein the flocculant in S2 comprises a bioprotein flocculant and a polyaluminum chloride flocculant, and the order of addition is to add the bioprotein flocculant and then add the polyaluminum chloride flocculant.
4. The method for treating tail water of eel culture according to claim 1, wherein the freshwater mussel, fish, beneficial bacteria algae and aquatic plants are put into the biological purification tank in the step S3.
5. An eel culture tail water treatment system according to the eel culture tail water treatment method of claim 1, which comprises a residual bait and feces collection tank, a fine particulate matter separation and collection device, a flocculate collection tank, a solid-liquid separation tank and a biological purification tank;
the residual bait and feces collection pool is used for containing tail water; the fine particulate matter separating and collecting device is placed in the residual bait and excrement collecting tank and is used for separating and collecting particulate matters in tail water in the residual bait and excrement collecting tank;
the flocculate collecting pool is communicated with the residual bait and excrement collecting pool and is used for receiving tail water after the particles are separated;
the solid-liquid separation tank is communicated with the floccule collecting tank and is used for solidifying and collecting floccules or separated particles;
the biological purification tank is communicated with the flocculate collecting tank and is used for receiving the tail water collected by the flocculate and/or the tail water separated by the solid-liquid separation tank.
6. The eel culture tail water treatment system according to claim 5, wherein the fine particulate matter separation and collection device comprises a plurality of collection bins, a diversion water window is formed in the tops of two adjacent collection bins, and a filter screen assembly is arranged on the diversion water window; the filter screen assembly comprises a movable sleeve, a frame and a filter screen; the movable sleeve is sleeved on a hanging rod at the top of the diversion water window and can rotate relative to the hanging rod; the filter screen is arranged on the frame, and the frame is connected to the movable sleeve.
7. The eel culture tail water treatment system according to claim 5, wherein the solid-liquid separation tank comprises a tank body comprising a cylindrical portion and a conical portion; the cone-shaped parts are arranged at the bottom of the cylinder part and are communicated with each other; one side of drum portion or cone portion is provided with a plurality of drain pipes, along the direction of height interval distribution between the plurality of drain pipes, all has the difference in height between the adjacent drain pipe, and all is provided with the drain valve on every drain pipe.
8. The eel culture tail water treatment system according to claim 7, wherein a sediment discharge valve is provided at the bottom outlet of the cone portion.
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