CN111135625B - A method for treating wastewater discharged from aquaculture - Google Patents
A method for treating wastewater discharged from aquaculture Download PDFInfo
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- CN111135625B CN111135625B CN202010047087.3A CN202010047087A CN111135625B CN 111135625 B CN111135625 B CN 111135625B CN 202010047087 A CN202010047087 A CN 202010047087A CN 111135625 B CN111135625 B CN 111135625B
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- belt
- organic particles
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- 238000009360 aquaculture Methods 0.000 title claims abstract description 50
- 244000144974 aquaculture Species 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 42
- 239000002351 wastewater Substances 0.000 title 1
- 239000010865 sewage Substances 0.000 claims abstract description 61
- 239000011146 organic particle Substances 0.000 claims abstract description 53
- 239000005416 organic matter Substances 0.000 claims abstract description 28
- 239000002245 particle Substances 0.000 claims abstract description 26
- 238000007664 blowing Methods 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 13
- 230000018044 dehydration Effects 0.000 claims abstract description 12
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 107
- 230000000903 blocking effect Effects 0.000 claims description 12
- 238000003825 pressing Methods 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000007423 decrease Effects 0.000 claims description 2
- 230000004308 accommodation Effects 0.000 claims 1
- 238000001914 filtration Methods 0.000 abstract description 48
- 238000001125 extrusion Methods 0.000 abstract description 4
- 239000003344 environmental pollutant Substances 0.000 abstract 1
- 231100000719 pollutant Toxicity 0.000 abstract 1
- 230000008569 process Effects 0.000 description 19
- 230000006835 compression Effects 0.000 description 18
- 238000007906 compression Methods 0.000 description 18
- 238000007790 scraping Methods 0.000 description 14
- 238000001035 drying Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 230000033001 locomotion Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 238000009395 breeding Methods 0.000 description 3
- 230000001488 breeding effect Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000010828 animal waste Substances 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 238000009313 farming Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- -1 organic matters Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/056—Construction of filtering bands or supporting belts, e.g. devices for centering, mounting or sealing the filtering bands or the supporting belts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/04—Filters with filtering elements which move during the filtering operation with filtering bands or the like supported on cylinders which are impervious for filtering
- B01D33/042—Filters with filtering elements which move during the filtering operation with filtering bands or the like supported on cylinders which are impervious for filtering whereby the filtration and squeezing-out take place between at least two filtering bands
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/44—Regenerating the filter material in the filter
- B01D33/46—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element
- B01D33/461—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element brushes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/44—Regenerating the filter material in the filter
- B01D33/46—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element
- B01D33/466—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element scrapers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/58—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element
- B01D33/62—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying
- B01D33/64—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying by compression
- B01D33/646—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying by compression by pressure rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/70—Filters with filtering elements which move during the filtering operation having feed or discharge devices
- B01D33/76—Filters with filtering elements which move during the filtering operation having feed or discharge devices for discharging the filter cake, e.g. chutes
-
- 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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Farming Of Fish And Shellfish (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention belongs to the technical field of aquaculture pollutant treatment, and particularly relates to a treatment method of aquaculture discharged sewage, which is completed by matching an aquaculture discharged sewage treatment device and comprises the following steps: step one, filtering organic particles: conveying the sewage into a filter box; filtering the organic particles and then keeping the filtered organic particles in the filter box; step two, transferring organic particles: the blowing pump provides power to send the organic particles into a gap between the parallel parts of the first filter belt and the second filter belt; step three, organic matter particle dehydration: the press roller is driven to rotate by a rotating motor, so that the first filter belt and the second filter belt are driven to move, and organic particles are extruded; the dehydrated organic particles fall into a dry material box. When the invention is used for treating the aquaculture sewage, the rigid straight rod drives the brush to clean the filter holes, so that the filter holes are prevented from being blocked; and the requirements on the environment such as temperature, humidity and the like are reduced through extrusion dehydration, and the dehydration efficiency is higher.
Description
Technical Field
The invention belongs to the technical field of aquaculture sewage treatment, and particularly relates to a treatment method of aquaculture sewage.
Background
The sewage of the breeding industry contains a large amount of animal wastes including organic matters, nitrogen, phosphorus, suspended matters and pathogenic bacteria and generates foul smell, and the direct discharge into rivers or surface water can seriously pollute water sources and soil environments, destroy the original functions of water bodies, harm human health and agricultural and fishery production, such as eutrophication, and cause fatal damage to the water quality of water areas. In order to reduce the influence of the aquaculture sewage on the ecological water body, the aquaculture sewage needs to be treated and then discharged. The treatment of the aquaculture sewage mainly comprises the steps of filtering organic solid garbage in the aquaculture sewage and separating the organic solid garbage from water.
At present, the treatment of the sewage of the breeding industry is mainly through sedimentation in a sedimentation tank and natural drying of the organic solid garbage. This approach has the following problems: (1) organic particles are attached to the filtering holes in the filtering process, so that the filtering holes are easily blocked, and the filtering efficiency is seriously reduced; (2) the natural drying has higher requirements on the environment such as temperature, humidity and the like, and the dehydration efficiency is lower.
Disclosure of Invention
Technical problem to be solved
The invention provides a treatment method of aquaculture sewage, aiming at solving the following problems in the prior art when the aquaculture sewage is treated: (1) organic particles are attached to the filtering holes in the filtering process, so that the filtering holes are easily blocked, and the filtering efficiency is seriously reduced; (2) the natural drying has higher requirements on the environment such as temperature, humidity and the like, and the dehydration efficiency is lower.
(II) technical scheme
In order to solve the technical problems, the invention adopts the following technical scheme:
the treatment method of the sewage discharged by the aquaculture industry is completed by matching the sewage treatment device discharged by the aquaculture industry, wherein the sewage treatment device discharged by the aquaculture industry comprises a water tank and a dry material tank which are fixedly connected together, and a shell and two groups of supporting rods are vertically and fixedly arranged on the upper surfaces of the water tank and the dry material tank. Each group of the supporting rods is provided with four supporting rods. The outside of the supporting rod is rotatably provided with a guide roller. The two groups of guide rollers are externally connected with a first filter belt and a second filter belt which are in a tensioning state. The first filter belt and the second filter belt are uniformly provided with micropores allowing water to pass through. The first filter belt and the second filter belt are partially parallel to each other with a gap between the portions parallel to each other. The top horizontal fixed mounting of bracing piece has the roof, and vertical rotation installs two sets of compression rollers between roof and water tank and the dry material case top surface, and two sets of compression rollers are located the region that first cassette tape and second cassette tape enclose respectively and the position one-to-one, and two sets of compression rollers cooperate with the lateral surface of the mutual parallel part of first cassette tape and second cassette tape respectively. The top of the top plate is vertically and fixedly provided with two rotating motors, and the output ends of the rotating motors are respectively fixedly connected with one of the compression rollers of each group and are connected together through a transmission belt between the compression rollers of the same group. One of them rotation in every group compression roller is driven through rotating electrical machines to drive belt and other compression rollers and rotate, the compression roller rotates the in-process and drives the first filtering belt and the second filtering belt motion that are in the tensioning state.
The top plate is fixedly provided with a water inlet pipe penetrating through the top plate, and the bottom end of the water inlet pipe extends to a position between the parts, parallel to each other, of the first filter belt and the second filter belt. The filter box is installed in the area between the parallel parts of the first filter belt and the second filter belt on the top of the water tank, the top of the filter box is communicated with the water inlet pipe, and the bottom of the filter box is communicated with the water tank. The outer side surface of the filter box is provided with an air blowing pump communicated with the interior of the filter box, the inner side surface of the filter box forms an opening communicated with a gap between the parallel parts of the first filter belt and the second filter belt, and the bottom of the inner side surface is horizontally and fixedly provided with a bearing plate. The water tank upper surface is located the below of compression roller and first filter belt and second filter belt contact position and has seted up into water seam. After sewage enters the filter box through the water inlet pipe, organic matter particles are filtered and reserved in the filter box, and filtered sewage enters the water tank. Organic matter particles with high water content in the filter box are blown into a gap between the parallel parts of the first filter belt and the second filter belt through a blowing pump, part of the organic matter particles are adhered to the first filter belt and the second filter belt, and part of the organic matter particles naturally fall onto the bearing plate. In the motion process of the first filter belt and the second filter belt, organic matter particles are driven to move, after the organic matter particles are subjected to the extrusion action of the compression roller, the internal water is extruded, and the extruded water passes through the micropores in the first filter belt and the second filter belt and drops to the water inlet seam along the first filter belt and the second filter belt and finally enters the water tank. The organic matter particles after extrusion dehydration are still positioned in a gap between the first filter belt and the second filter belt and move along with the first filter belt and the second filter belt until the organic matter particles are separated from the gap between the parallel parts of the first filter belt and the second filter belt and then fall into the dry material box.
The treatment method of the sewage discharged by the aquaculture industry comprises the following steps:
step one, filtering organic particles: and conveying the sewage containing organic particles into the filter box through the water inlet pipe. The organic particles are filtered and then left in the filter box, and water flows into the water tank after passing through the filter box.
Step two, transferring organic particles: the blowing pump provides power to send the organic particles in the filter box into the gap between the parallel parts of the first filter belt and the second filter belt and fall onto the bearing plate.
Step three, organic matter particle dehydration: the press roller is driven to rotate by the rotary motor, so that the first filter belt and the second filter belt are driven to move. The first filter belt and the second filter belt clamp the organic particles on the bearing plate in the gap and extrude the organic particles. The organic matter particles are extruded, moisture in the organic matter particles seeps out, and water penetrates through the first filter belt and the second filter belt and then drops into the water tank through the water inlet seam. The dehydrated organic particles are continuously clamped between the first filter belt and the second filter belt to move until the organic particles are separated from a gap between the parallel parts of the first filter belt and the second filter belt and then fall into the drying box.
As a preferred technical scheme of the invention, in the aquaculture sewage treatment device, the filter box comprises a support platform which is concave downwards, and the middle position of the bottom of the support platform is provided with a filter hole. A rigid straight rod coaxial with the filtering hole vertically penetrates through the filtering hole, a brush is arranged in the middle of the rigid straight rod, and a water retaining sheet is horizontally and fixedly arranged at the bottom of the rigid straight rod. The top of the water retaining sheet is vertically and fixedly provided with a first spring, and the top of the first spring is abutted against the lower bottom surface of the bearing platform. The sewage passes through the filter holes and then impacts the upper surface of the water retaining sheet to drive the water retaining sheet, the rigid straight rod and the hairbrush to move downwards, and the water retaining sheet, the rigid straight rod and the hairbrush can move upwards under the action of the elastic force of the first spring to return to the original position because the impact force of the water flow is not constant. The brush reciprocates up and down in the filtering hole under the impact force of water flow and the elastic force of the first spring to clean the organic matter particles attached to the filtering hole.
As a preferable technical scheme of the invention, three supporting platforms are distributed along the vertical direction, and the diameters of the filtering holes are gradually reduced. The number of the air blowing pumps is three, and each air blowing pump is communicated with the space between the lower layer bearing platform and the upper layer bearing platform. The filtering effect is improved through multi-stage filtering, and meanwhile, the situation of filter hole blockage is reduced.
As a preferred technical scheme of the invention, the number of the first springs arranged on the water retaining sheet is three, and the first springs are uniformly distributed along the circumferential direction of the water retaining sheet so as to ensure that the water retaining sheet is in a horizontal state, and the rigid straight rod is in a vertical state, so that the brush can be always kept in contact with the surface of the filter hole.
As a preferred technical scheme of the invention, in the aquaculture sewage treatment device, the lower surface of the supporting platform is horizontally and rotatably matched with the mounting ring by taking the rigid straight rod as a central shaft, and the top of the first spring is connected to the mounting ring, so that the water blocking sheet, the rigid straight rod and the hairbrush can rotate.
As a preferable technical scheme of the invention, the outer surface of the rigid straight rod is vertically and uniformly fixedly provided with a plurality of blades above the bearing platform. In the process that sewage flows downwards from the filtering holes, because the filtering holes are small, eddy currents can be generated above the supporting platform and located near the filtering holes, the blades are pushed by rotating water flow, the rigid straight rods and the brushes are driven to rotate, the brushes can clean all the directions of the filtering holes, and the dredging effect is improved.
As a preferred technical scheme, the upper surface of the bearing platform is radially provided with a containing groove along the filtering hole, the surface of the rigid straight rod is provided with a vertical sliding groove, and the sliding groove is internally provided with a scraping strip matched with the upper surface of the bearing platform in a sliding manner. And a second spring is vertically arranged in the sliding groove and is used for pressing the scraping strip against the upper surface of the bearing platform. In the rotating process of the rigid straight rod, the scraping strip is driven to cling to the upper surface of the bearing platform to rotate, and organic matter particles attached to the upper surface of the bearing platform are pushed into the accommodating groove.
As a preferred technical scheme, a limit groove in the vertical direction is formed in the side wall of the filter box, the limit groove is in rotating fit with an impeller located in the filter box, and the impeller is matched with the accommodating groove. And a third spring is vertically arranged in the limiting groove. In the filtering process, the impeller is upwards pulled through the air cylinder arranged outside the filtering box, the third spring is compressed, and the impeller and the scraping strip are prevented from interfering with each other. After the filtering is finished, the impeller is loosened, and the third spring pushes the impeller to the lower part of the most limited groove. The air is blown through the air blowing pump to drive the impeller to rotate, and the impeller pushes the accommodating groove to be sent between the first filter belt and the second filter belt.
As a preferred technical scheme of the invention, the upper surface of the bearing platform is horizontally and fixedly provided with a gear ring, the scraping strip is internally and rotatably provided with a rotating shaft, the rotating shaft is fixedly provided with a blade, and the end part of the rotating shaft is fixedly provided with a gear which is mutually meshed with the gear ring. Scrape the strip and rotate the in-process, because ring gear and gear are in the engaged state, so the gear can drive pivot and blade and take place to rotate, and then carries out the brute force to the organic matter granule of adhesion at the cushion cap upper surface and strike off, ensures that the organic matter granule can both get into in the holding tank.
As a preferable technical scheme of the invention, in the aquaculture discharge sewage treatment device, the lower surface of the top plate is vertically and rotatably provided with the brush rollers matched with the surfaces of the first filter belt and the second filter belt above the drying box. The first filter belt and the second filter belt are driven to rotate in the movement process, the brush roller cleans the residual organic particles of the first filter belt and the second filter belt in the rotation process, and the residual organic particles fall into the dry box after being cleaned. A cam shaft is vertically and rotatably arranged between the top plate and the top surface of the drying box through a torsion spring, and semicircular convex blocks matched with the cam shaft are uniformly arranged on the outer side surfaces of the first filter belt and the second filter belt. In the motion process of the first filter belt and the second filter belt, the cam shaft and the cam shaft are impacted to drive the cam shaft to rotate, and after the cam shaft is separated from the cam shaft, the cam shaft is restored to the initial position under the action of the torsion spring to impact the next cam shaft, so that a continuous vibration effect is generated on the first filter belt and the second filter belt, and organic matter particles after dehydration are prevented from being attached to the first filter belt and the second filter belt.
(III) advantageous effects
The invention has the following beneficial effects:
(1) when the aquaculture sewage treatment device is used for treating aquaculture sewage, the impact force provided by the natural falling of water flow and the elastic force of the first spring interact, so that the rigid straight rod drives the hairbrush to vertically reciprocate in the filter hole, organic matter particles attached to the filter hole are cleaned, and the filter hole is prevented from being blocked.
(2) In the filter box, the blades on the rigid straight rod are pushed by the vortex generated above the filter hole before water flow enters the filter hole, so that the rigid straight rod and the brush are driven to rotate, and the filter hole is fully cleaned on one hand; on the other hand drives the scraping strip and rotates, and organic matter particles on the upper surface of the bearing platform are pushed into the accommodating groove, so that the impeller can conveniently send the organic matter particles into the space between the first filter belt and the second filter belt.
(3) In the filter box, the gear and the gear ring are in a meshed state in the rotating process of the scraping strip, so that the gear can drive the rotating shaft and the blade to rotate, organic matter particles adhered to the upper surface of the supporting platform are scraped, and the organic matter particles can enter the accommodating groove.
(4) When the aquaculture sewage treatment device is used for treating aquaculture sewage, the organic matter particles between the first filter belt and the second filter belt are extruded through the compression roller, moisture contained in the organic matter particles is extruded out, the requirements on environments such as temperature and humidity are reduced compared with the traditional natural drying, and the dehydration efficiency is high.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a step diagram of a method for treating sewage discharged from a farming industry according to an embodiment of the present invention;
FIG. 2 is a schematic external perspective view of an example of an apparatus for treating sewage discharged from aquaculture in accordance with the present invention;
FIG. 3 is a schematic view showing a first structure of an interior of the sewage treatment apparatus for aquaculture according to the embodiment of the present invention;
FIG. 4 is a second schematic structural view of the interior of the sewage treatment apparatus for aquaculture in the embodiment of the present invention;
FIG. 5 is a schematic view showing the internal structure of a filtration tank of the aquaculture wastewater treatment apparatus according to the embodiment of the present invention;
FIG. 6 is an enlarged view of a portion A of the effluent water treatment apparatus for aquaculture in accordance with the embodiment of the present invention;
fig. 7 is a top view of parallel portions of a first filter belt and a second filter belt in an embodiment of the invention.
In the figure: 1-water tank, 2-dry box, 3-shell, 4-support rod, 5-guide roller, 6-first filter belt, 7-second filter belt, 8-top plate, 9-press roller, 10-rotating motor, 11-transmission belt, 12-water inlet pipe, 13-filter box, 131-supporting table, 132-filter hole, 133-rigid straight rod, 134-brush, 135-water retaining sheet, 136-first spring, 137-mounting ring, 138-blade, 14-air blowing pump, 15-supporting plate, 16-water inlet seam, 17-accommodating groove, 18-sliding groove, 19-scraping strip, 20-second spring, 21-limiting groove, 22-impeller, 23-third spring, 24-gear ring, 25-rotating shaft, 26-blade, 27-gear, 28-brush roller, 29-cam shaft, 30-lug.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
As shown in fig. 2 to 7, the present embodiment provides a sewage treatment device for aquaculture, which comprises a water tank 1 and a dry material tank 2 fixedly connected together, wherein a housing 3 and two sets of support rods 4 are vertically and fixedly installed on the upper surfaces of the water tank 1 and the dry material tank 2. Four support rods 4 per set. A guide roller 5 is rotatably arranged outside the support rod 4. The two groups of guide rollers 5 are externally connected with a first filter belt 6 and a second filter belt 7 which are in a tensioning state. The first filter belt 6 and the second filter belt 7 are uniformly provided with micropores for allowing water to pass through. The first filter belt 6 and the second filter belt 7 are partly parallel to each other with a gap between the parts parallel to each other. The top horizontal fixed mounting of bracing piece 4 has roof 8, and vertical rotation installs two sets of compression rollers 9 between roof 8 and water tank 1 and the 2 top surfaces of dry box, and two sets of compression rollers 9 are located the region that first cassette 6 and second cassette 7 enclose respectively and the position one-to-one, and two sets of compression rollers 9 cooperate with the lateral surface of the mutual parallel portion of first cassette 6 and second cassette 7 respectively. Two rotating motors 10 are vertically and fixedly mounted at the top of the top plate 8, the output ends of the rotating motors 10 are respectively and fixedly connected with one of the pressing rollers 9 of each group, and the pressing rollers 9 of the same group are connected together through a driving belt 11. One of the compression rollers 9 in each group is driven to rotate through the rotating motor 10, so that the driving belt 11 and other compression rollers 9 are driven to rotate, and the first filter belt 6 and the second filter belt 7 which are in a tensioning state are driven to move in the rotation process of the compression rollers 9.
A water inlet pipe 12 penetrating through the top plate 8 is fixedly arranged on the top plate 8, and the bottom end of the water inlet pipe 12 extends to a position between the mutually parallel parts of the first filter belt 6 and the second filter belt 7. The area of the top of the water tank 1 between the parallel parts of the first filter belt 6 and the second filter belt 7 is provided with a filter tank 13, the top of the filter tank 13 is communicated with a water inlet pipe 12, and the bottom of the filter tank 13 is communicated with the water tank 1. An air blowing pump 14 communicated with the interior of the filter box 13 is arranged on the outer side surface of the filter box 13, an opening communicated with a gap between the mutually parallel parts of the first filter belt 6 and the second filter belt 7 is formed on the inner side surface of the filter box 13, and a bearing plate 15 is horizontally and fixedly arranged at the bottom of the inner side surface. The upper surface of the water tank 1 is provided with a water inlet seam 16 below the contact position of the press roller 9 and the first filter belt 6 and the second filter belt 7. After sewage enters the filter box 13 through the water inlet pipe 12, organic particles are filtered and stored in the filter box 13, and the filtered sewage enters the water tank 1. Organic particles with high water content in the filter box 13 are sent to a gap between the parallel parts of the first filter belt 6 and the second filter belt 7 through the blowing pump 14, part of the organic particles are adhered to the first filter belt 6 and the second filter belt 7, and part of the organic particles naturally fall onto the supporting plate 15. In the movement process of the first filter belt 6 and the second filter belt 7, organic particles are driven to move, after the organic particles are squeezed by the pressing roller 9, the inside water is squeezed out, and the squeezed water passes through the micropores in the first filter belt 6 and the second filter belt 7 and drops to the water inlet seam 16 along the first filter belt 6 and the second filter belt 7 and finally enters the water tank 1. The organic particles dehydrated by extrusion are still positioned in the gap between the first filter belt 6 and the second filter belt 7 and move along with the first filter belt 6 and the second filter belt 7 until the organic particles are separated from the gap between the parallel parts of the first filter belt 6 and the second filter belt 7 and then fall into the drier tank 2.
In this embodiment, the filtering box 13 includes a supporting platform 131 recessed downwards, and a filtering hole 132 is opened at a middle position of the bottom of the supporting platform 131. A rigid straight rod 133 coaxial with the filtering hole 132 vertically penetrates through the filtering hole 132, a brush 134 is arranged in the middle of the rigid straight rod 133, and a water retaining sheet 135 is horizontally and fixedly arranged at the bottom of the rigid straight rod 133. The top of the water blocking sheet 135 is vertically and fixedly provided with a first spring 136, and the top of the first spring 136 is abutted against the lower bottom surface of the supporting platform 131. The sewage passes through the filtering holes 132 and then impacts the upper surface of the water blocking sheet 135 to drive the water blocking sheet 135, the rigid straight rod 133 and the brush 134 to move downwards, and because the impact force of the water flow is not constant, the water blocking sheet 135, the rigid straight rod 133 and the brush 134 can move upwards to return to the original position under the action of the elastic force of the first spring 136. The brush 134 reciprocates up and down in the filter hole 132 by the impact force of the water flow and the elastic force of the first spring 136, and cleans the organic matter particles attached to the filter hole 132.
In this embodiment, three supporting platforms 131 are distributed along the vertical direction, and the diameter of the filtering holes 132 gradually decreases. The number of the blower pumps 14 is three, and each blower pump 14 communicates with a space between the lower stage bearing table 131 and the upper stage bearing table 131. The filtering effect is improved by the multi-stage filtering, and the blocking of the filtering holes 132 is reduced.
In this embodiment, the number of the first springs 136 installed on the water guard 135 is three, and the first springs are uniformly distributed along the circumferential direction of the water guard 135 to ensure that the water guard 135 is in a horizontal state, and the rigid straight rod 133 is in a vertical state, so that the brush 134 can be always kept in contact with the surface of the filter hole 132.
In this embodiment, in the sewage treatment device for aquaculture, the mounting ring 137 is horizontally and rotatably fitted to the lower surface of the supporting platform 131 around the rigid straight rod 133, and the top of the first spring 136 is connected to the mounting ring 137, so that the water blocking sheet 135, the rigid straight rod 133 and the brush 134 can rotate.
In this embodiment, a plurality of blades 138 are vertically and uniformly fixed on the outer surface of the rigid straight rod 133 above the supporting platform 131. In the process that sewage flows downwards from the filtering holes 132, because the filtering holes 132 are smaller, eddy currents can be generated above the supporting platform 131 and are located near the filtering holes 132, the blades 138 are pushed by rotating water flow, the rigid straight rods 133 and the brushes 134 are driven to rotate, and therefore the brushes 134 can clean all directions of the filtering holes 132, and the dredging effect is improved.
In this embodiment, the upper surface of the supporting platform 131 is radially provided with a receiving groove 17 along the filtering hole 132, the surface of the rigid straight rod 133 is provided with a sliding groove 18 in the vertical direction, and the sliding groove 18 is slidably provided with a scraping strip 19 matched with the upper surface of the supporting platform 131. A second spring 20 is vertically arranged in the sliding groove 18, and the second spring 20 presses the scraping strip 19 against the upper surface of the supporting platform 131. In the rotating process of the rigid straight rod 133, the scraping strip 19 is driven to cling to the upper surface of the supporting platform 131 to rotate, and organic particles attached to the upper surface of the supporting platform 131 are pushed into the accommodating groove 17.
In this embodiment, the lateral wall of the filter box 13 is provided with a vertical limiting groove 21, the limiting groove 21 is rotatably matched with an impeller 22 located in the filter box 13, and the impeller 22 is matched with the accommodating groove 17. A third spring 23 is vertically installed in the limiting groove 21. During the filtering process, the impeller 22 is lifted upwards by the air cylinder arranged outside the filtering box 13, and the third spring 23 is compressed, so that the impeller 22 and the scraping strip 19 are prevented from interfering with each other. After the filtration is finished, the impeller 22 is loosened, and the third spring 23 pushes the impeller 22 to the lower part of the most limited groove 21. The impeller 22 is driven to rotate by blowing air through the air blowing pump 14, and the impeller 22 pushes the accommodating groove 17 into the space between the first filter belt 6 and the second filter belt 7.
In this embodiment, a gear ring 24 is horizontally and fixedly mounted on the upper surface of the supporting platform 131, a rotating shaft 25 is rotatably mounted in the scraping bar 19, a blade 26 is fixedly mounted on the rotating shaft 25, and a gear 27 meshed with the gear ring 24 is fixedly mounted at the end of the rotating shaft 25. In the rotating process of the scraping strip 19, the gear ring 24 and the gear 27 are in a meshed state, so that the gear 27 can drive the rotating shaft 25 and the blade 26 to rotate, organic particles adhered to the upper surface of the supporting platform 131 are strongly scraped, and the organic particles can enter the accommodating groove 17.
In this embodiment, in the aquaculture wastewater treatment apparatus, a brush roller 28 is vertically rotatably mounted on the lower surface of the top plate 8 above the dry tank 2 to be surface-fitted to the first filter belt 6 and the second filter belt 7. The first filter belt 6 and the second filter belt 7 drive the brush roller 28 to rotate in the movement process, the brush roller 28 cleans the residual organic particles of the first filter belt 6 and the second filter belt 7 in the rotation process, and the residual organic particles fall into the drying box 2 after being cleaned. A cam shaft 29 is vertically and rotatably arranged between the top plate 8 and the top surface of the dry material box 2 through a torsion spring, and semicircular convex blocks 30 matched with the cam shaft 29 are uniformly arranged on the outer side surfaces of the first filter belt 6 and the second filter belt 7. In the process of moving the first filter belt 6 and the second filter belt 7, the cam shaft 29 is driven to rotate by the bump 30 and the cam shaft 29, after the bump 30 is separated from the cam shaft 29, the cam shaft 29 is restored to the initial position under the action of the torsion spring and then collides with the next bump 30, so that a continuous vibration effect is generated on the first filter belt 6 and the second filter belt 7, and organic matter particles after dehydration are prevented from being attached to the first filter belt 6 and the second filter belt 7.
As shown in fig. 1, the present embodiment provides a method for treating sewage discharged from aquaculture, comprising the following steps:
step one, filtering organic particles: conveying the sewage containing organic particles into a filter box 13 through a water inlet pipe 12; the organic particles are filtered and then left in the filter tank 13, and water flows into the water tank 1 after passing through the filter tank 13;
step two, transferring organic particles: the impeller 22 sends the organic particles in the filter box 13 into a gap between the parallel parts of the first filter belt 6 and the second filter belt 7 by the power provided by the blowing pump 14, and the organic particles fall onto the bearing plate 15;
step three, organic matter particle dehydration: the compression roller 9 is driven to rotate by the rotating motor 10, so that the first filter belt 6 and the second filter belt 7 are driven to move; the first filter belt 6 and the second filter belt 7 clamp the organic particles on the bearing plate 15 in the gap and extrude the organic particles; the water in the organic particles after being extruded seeps out, and the water drops into the water tank 1 through the water inlet seam 16 after passing through the first filter belt 6 and the second filter belt 7; the dehydrated organic particles continue to be clamped between the first filter belt 6 and the second filter belt 7 to move until the dehydrated organic particles fall into the dry material box 2 after being separated from the gaps between the parallel parts of the first filter belt 6 and the second filter belt 7.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
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| CN113248099A (en) * | 2021-05-20 | 2021-08-13 | 霍邱县昌荣鹅业养殖有限公司 | Waste treatment equipment for poultry house in household farm |
| CN113754037A (en) * | 2021-09-28 | 2021-12-07 | 安徽四邦环境科技有限公司 | Mechanical filtering device for environmental wastewater treatment |
| CN115477416A (en) * | 2022-10-12 | 2022-12-16 | 贵州农业职业学院 | Farm sewage disposal system and method |
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