CN219136573U - Breed tail water processing system - Google Patents
Breed tail water processing system Download PDFInfo
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- CN219136573U CN219136573U CN202222997735.9U CN202222997735U CN219136573U CN 219136573 U CN219136573 U CN 219136573U CN 202222997735 U CN202222997735 U CN 202222997735U CN 219136573 U CN219136573 U CN 219136573U
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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
- 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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Abstract
The utility model discloses a culture tail water treatment system which comprises a microfiltration device, a protein separation device, a biological aerated filter, a denitrification device and an activated carbon filter, wherein the water inlet end of the microfiltration device is used for receiving culture tail water, the water inlet end of the protein separation device is connected with the water outlet end of the microfiltration device, the water inlet end of the biological aerated filter is connected with the water outlet end of the protein separation device, the water inlet end of the denitrification device is connected with the water outlet end of the biological aerated filter, the water inlet end of the activated carbon filter is connected with the water outlet end of the denitrification device, and the water outlet end of the activated carbon filter outputs reuse water. The aquaculture tail water treatment system can effectively treat various pollutants in the seawater aquaculture tail water, improves the treatment efficiency of the seawater aquaculture tail water, and has the advantages of small occupied area, convenience in maintenance and high automation degree. The recycling of the culture tail water can also improve the utilization rate of seawater resources, reduce emission and avoid damage to marine environment.
Description
Technical Field
The utility model relates to the technical field of mariculture tail water treatment, in particular to a culture tail water treatment system.
Background
The culture tail water produced by the circulating water culture system contains high-concentration pollutants such as residual baits, fish manure, nitrate, ammonia nitrogen, organic matters, microorganisms and the like, so that the recycling of the tail water is influenced. The treatment of the cultivation tail water is characterized in that the process core is biological treatment, and pollutants such as nitrate, ammonia nitrogen, organic matters and the like in the cultivation tail water are removed through the actions of nitrification, denitrification, aerobic respiration and the like of microorganisms, and the treatment of physical filtration, disinfection and the like is assisted, so that the recycling rate of the tail water can reach more than 90% under the condition of good treatment effect. The existing mariculture tail water treatment process mostly adopts the forms of ecological ponds and artificial wetlands for treatment, and the mode has large occupied area and low treatment load, is not suitable for a culture work ship mode, and facilities such as a multi-medium filter, a sedimentation tank and the like adopted by a land facility treatment system also do not meet the on-board intensive requirements.
Accordingly, there is a need for a aquaculture tail water treatment system that at least partially addresses the above issues.
Disclosure of Invention
In the summary, a series of concepts in a simplified form are introduced, which will be further described in detail in the detailed description. The summary of the utility model is not intended to define the key features and essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
To at least partially solve the above problems, the present utility model provides a cultivation tail water treatment system, comprising:
the water inlet end of the micro-filtration device is used for receiving the culture tail water;
the protein separation device comprises a protein separator, and the water inlet end of the protein separation device is connected with the water outlet end of the microfiltration device through a pipeline;
the water inlet end of the biological aerated filter is connected with the water outlet end of the protein separation device through a pipeline;
the water inlet end of the denitrification device is connected with the water outlet end of the biological aerated filter through a pipeline; and
the water inlet end of the activated carbon filter is connected with the water outlet end of the denitrification device through a pipeline, and the water outlet end of the activated carbon filter is used for outputting reuse water.
Optionally, at least one of the biological aerated filter, the denitrification device and the activated carbon filter is connected with a backwash water inlet pipeline for receiving the reuse water.
Optionally, the culture tail water treatment system further comprises a regulating tank for regulating the pH value of the culture tail water and homogenizing the quality of the culture tail water, the regulating tank is connected with the water inlet end of the micro-filtration device through a pipeline,
the at least one of the biological aerated filter, the denitrification device and the activated carbon filter is connected with the regulating tank through a backwash drainage pipeline.
Optionally, the culture tail water treatment system further comprises a reuse water tank, wherein the water inlet end of the reuse water tank is connected with the water outlet end of the activated carbon filter tank through a pipeline, and the reuse water tank is connected with at least one of the biological aerated filter tank, the denitrification device and the activated carbon filter tank through a backwash water inlet pipeline.
Optionally, the culture tail water treatment system further comprises an air compressor connected to at least one of the biological aerated filter, the denitrification device and the activated carbon filter via a pipeline; and/or
The denitrification device comprises at least one of a denitrification filter, a strong oxidation tank and a nitrification filter.
Optionally, the water outlet end of the microfiltration device is equal to or higher than the water inlet end of the protein separation device, the water outlet end of the protein separation device is equal to or higher than the water inlet end of the biological aerated filter, and the water outlet end of the biological aerated filter is equal to or higher than the water inlet end of the denitrification device.
Optionally, the aquaculture tail water treatment system further comprises an ozone generator, an ORP sensor and a control unit, wherein the ozone generator is connected with the protein separation device through a pipeline, the ORP sensor is arranged on the pipeline at the water outlet end of the protein separation device, and the control unit controls the start and stop of the ozone generator according to the signal of the ORP sensor.
Optionally, the culture tail water treatment system further comprises an air compressor, wherein the air compressor is connected with the bottom of the protein separation device through a pipeline, and an overflow pipeline for discharging pollutants is arranged at the top of the protein separation device.
Optionally, the microfiltration device comprises a rotary drum microfiltration machine, the culture tail water treatment system further comprises a sludge treatment device, and the rotary drum microfiltration machine is connected with the sludge treatment device through a pipeline so as to convey backwash wastewater to the sludge treatment device.
Optionally, the sludge treatment device comprises a concentration tank, a screw pump and a plate-and-frame filter press, wherein the concentration tank is arranged at the upstream of the plate-and-frame filter press and is connected with the upstream of the plate-and-frame filter press through pipelines, the screw pump is arranged on the pipeline between the concentration tank and the plate-and-frame filter press, and the concentration tank and the plate-and-frame filter press are respectively connected with a return pipeline.
The culture tail water treatment system provided by the utility model can effectively treat various pollutants in the seawater culture tail water by arranging the microfiltration device, the protein separation device, the biological aerated filter, the denitrification device and the activated carbon filter, and improves the treatment efficiency of the seawater culture tail water, and has the advantages of small occupied area, convenience in maintenance and high degree of automation. The recycling of the culture tail water can also improve the utilization rate of seawater resources, reduce emission and avoid damage to marine environment.
Drawings
The following drawings are included to provide an understanding of the utility model and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the utility model and their description to explain the principles of the utility model.
In the accompanying drawings:
FIG. 1 is a schematic process flow diagram of a aquaculture tail water treatment system according to a preferred embodiment of the present utility model;
FIG. 2 is a schematic plan view of the aquaculture tail water treatment system shown in FIG. 1.
Reference numerals illustrate:
1: and (2) an adjusting tank: microfiltration device 3: protein separation device
4: aeration biological filter 5: denitrification device 6: denitrification filter tank
7: strong oxidation cell 8: activated carbon filter 9: reuse pool
10: concentration tank 11: screw pump 12: plate-and-frame filter press
13: ozone generator 14: an air compressor 15: medicine pot and medicine adding pump
16: lift pump 17: backwash water inlet line 18: backwash drainage pipeline
19: overflow line 20: return line 21: control unit
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present utility model. It will be apparent, however, to one skilled in the art that the utility model may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the utility model.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is intended to include the plural unless the context clearly indicates otherwise. Furthermore, it will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
Ordinal numbers such as "first" and "second" cited in the present utility model are merely identifiers and do not have any other meaning, such as a particular order or the like. Also, for example, the term "first component" does not itself connote the presence of "second component" and the term "second component" does not itself connote the presence of "first component". It should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", and the like are used herein for illustrative purposes only and are not limiting.
Exemplary embodiments according to the present utility model will now be described in more detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, a cultivation tail water treatment system according to a preferred embodiment of the present utility model includes an adjusting tank 1, a micro-filtration device 2, a protein separation device 3, a biological aerated filter 4 (BAF filter), a denitrification device 5, an activated carbon filter 8, and a reuse water tank 9.
The water inlet end of the regulating tank 1 is used for receiving the culture tail water, and the water outlet end of the regulating tank 1 is connected with the water inlet end of the micro-filtration device 2 through a pipeline. The water outlet end of the micro-filtration device 2 is connected with the water inlet end of the protein separation device 3 through a pipeline. The water outlet end of the protein separation device 3 is connected with the water inlet end of the biological aerated filter 4 through a pipeline. The water outlet end of the biological aerated filter 4 is connected with the water inlet end of the denitrification device 5 through a pipeline. The water outlet end of the denitrification device 5 is connected with the water inlet end of the activated carbon filter 8. The water outlet end of the activated carbon filter 8 is connected with the water inlet end of the reuse water tank 9 through a pipeline so as to collect reuse water output by the water outlet end of the activated carbon filter 8 to the reuse water tank 9.
Preferably, the water outlet end of the microfiltration device 2 is higher or higher than the water inlet end of the protein separation device 3, the water outlet end of the protein separation device 3 is higher or higher than the water inlet end of the biological aerated filter 4, and the water outlet end of the biological aerated filter 4 is higher or higher than the water inlet end of the denitrification device 5. Therefore, the culture tail water can automatically flow to the next process flow by gravity, the cost can be reduced, and the flow is simplified.
In the cultivation tail water treatment system, the cultivation tail water firstly enters the regulating tank 1, and the regulating tank 1 is used for regulating the water quality and the water quantity of the cultivation tail water, namely regulating the pH value of the cultivation tail water and the water quality of the homogeneous cultivation tail water, so that the subsequent treatment is ensured to be uniform and stable. The regulating reservoir 1 may also serve as a temporary reservoir. Because the respiration of the fish high-density culture is strong, the pH sensor is arranged in the regulating tank 1 and is provided with a medicine tank and a medicine adding pump 15 (alkali), and the pH value of the water body can be regulated by combining with the pH sensor. The conditioning tank 1 is also equipped with a level sensor and a lift pump 16, which pumps the nutrient tail water into the microfiltration device 2 according to the water level.
The microfiltration device 2 comprises a rotary drum microfiltration machine, the rotary drum microfiltration machine adopts a gravity flow center water inlet filtration mode, large-particle suspended matters such as residual baits, fish dung and the like in the culture tail water are trapped by a 316 stainless steel filter screen (200 meshes), and filtrate automatically flows into the protein separation device 3. When the surface of the filter screen is seriously blocked, the rotary drum micro-filter driving motor backflushes, a part of filtrate is used for backflushing, the filter screen slowly rotates and is continuously cleaned by a backflushing nozzle, and backflushing drainage and solid suspended matters are discharged through a sewage discharge pipeline.
The aquaculture tail water treatment system may also include an air compressor. An air compressor is connected to the bottom of the protein separation device via a pipe to deliver compressed air to the protein separation device. The top of the protein separation device may be provided with an overflow line for discharging contaminants. Specifically, the protein separation device 3 includes a protein separator, the air compressor 14 (including standby) sends compressed air from the bottom via a pipeline into the protein separation device 3, the compressed air forms tiny bubbles, fine suspended matters and proteins in the culture tail water are removed through air floatation, and pollutants collected on the water surface are discharged through the overflow pipeline 19 and then are intensively treated.
Preferably, the protein separation device 3 is also equipped with an ozone generator 13 and an ORP sensor (oxidation-reduction reaction potential sensor). Ozone is used for killing bacteria and pathogens, oxidizing non-biodegradable organic molecules, nitrite and the like, and can improve the treatment load of the subsequent process. The ORP sensor is arranged on a pipeline at the water outlet end of the protein separation device 3 and is used for monitoring the water body, so that the influence of residual ozone on fish life can be prevented. The treated culture tail water automatically flows to the aeration biological filter 4 through a pipeline.
An air compressor may be connected to at least one of the biological aerated filter 4, the denitrification device 5, and the activated carbon filter 8 via piping to deliver compressed air to at least one of these devices. In the illustrated embodiment, the air compressors are connected to the biological aerated filter 4, the denitrification device 5, and the activated carbon filter 8, respectively, via pipes. At least one of the aeration biological filter 4, the denitrification device 5, and the activated carbon filter 8 may be connected with a backwash water inlet line 17 for receiving backwash water to send backwash water to these devices via the backwash water inlet line 17 for backwash. In the illustrated embodiment, the aeration biological filter 4, the denitrification device 5, and the activated carbon filter 8 are connected to a backwash water inlet line 17 for receiving reuse water. At least one of the aeration biological filter 4, the denitrification device 5 and the activated carbon filter 8 can be connected with the regulating tank 1 through a backwash drain pipeline 18 to convey drain to the regulating tank 1. In the illustrated embodiment, the biological aerated filter 4, the denitrification device 5 and the activated carbon filter 8 are all connected to the conditioning tank 1 through a backwash drain line 18.
The aeration biological filter 4 comprises a filter material, preferably quartz sand with the particle size of 2-4 mm can be used as the filter material, the filling rate is 30%, and other fillers with larger specific surface area can also be used. The aeration biological filter 4 integrates biological oxidation and suspended solid interception functions, suspended solids are intercepted after the culture tail water passes through a filter material layer, and pollutants in the water are continuously degraded and converted by microorganisms attached to the filter material in an aeration environment, so that SS (suspended substances), COD (chemical oxygen demand), BOD (biochemical oxygen demand), ammonia nitrogen, nitrite, phosphorus and the like in the water can be removed. Backwash of the biological aerated filter 4 comprises air washing and water washing, wherein the air compressor 14 is used for feeding compressed air through a pipeline, and the discharged water flows back to the regulating tank 1 through a backwash drain pipeline 18. The treated culture tail water automatically flows to the denitrification device 5 through a pipeline.
The denitrification device 5 comprises at least one of a denitrification filter, a strong oxidation tank and a nitrification filter. In this embodiment, the denitrification apparatus 5 includes a denitrification filter 6 and a strong oxidation tank 7. The culture tail water firstly enters a denitrification filter tank 6. The denitrification filter 6 comprises a filler, preferably quartz sand with the particle size of 2-4 mm can be used as the filler, the filling rate is 40%, and other fillers with larger specific surface areas can be used. The denitrification filter 6 can convert nitrate nitrogen in the tail water into nitrogen by denitrification, so that nitrogen-containing pollutants are removed, and phosphate and organic matters in the water can be effectively removed by matching the denitrification filter with the biological aerated filter 4. Backwash of the denitrification filter 6 comprises air washing and water washing, wherein the air compressor 14 is used for feeding compressed air through a pipeline, and the discharged water is returned to the regulating tank 1 through a backwash drain pipeline 18. The treated culture tail water automatically flows to the strong oxidation pond 7 through a pipeline.
The strong oxidation cell 7 is equipped with a canister and a dosing pump 15 for adding a strong oxidizing agent, such as NaClO. Ammonia nitrogen, nitrite and the like in the water can be effectively removed through the strong oxidation pond 7. The strong oxidation pond 7 is provided with a lift pump 16, and the treated culture tail water can be pumped into the activated carbon filter 8.
The activated carbon filter 8 is filled with activated carbon with an iodine value of 600mg/g and a filling rate of 40%, so that residual NaClO can be removed, and residual organic matters and halogen-containing substances can be adsorbed. The treated culture tail water automatically flows to the reuse water pool 9 through a pipeline. Preferably, the activated carbon filter tank 8 backwash includes air washing and water washing, wherein the air compressor 14 sends compressed air through a pipeline and the drain water flows back to the conditioning tank 1 through the backwash drain pipeline 18.
The reuse water tank 9 is used for collecting and treating the up-to-standard cultivation tail water, and also can be used for temporarily storing water, and the up-to-standard water flows back to the regulating tank 1 through a pipeline (not shown). The reuse water tank 9 is equipped with a lift pump 16 and a liquid level sensor, and can pump reuse water into the fish circulating water culture system according to the water level. Preferably, the reuse water tank is connected with at least one of the biological aerated filter, the denitrification device and the activated carbon filter through a backwash water inlet pipeline, and in the illustrated embodiment, the reuse water tank 9 is connected with the biological aerated filter 4, the denitrification device 5 and the activated carbon filter 8 through backwash water inlet pipelines 18. Therefore, the reuse water tank 9 can convey backwash water for the biological aerated filter 4, the denitrification device 5 and the activated carbon filter 8 through the backwash water inlet pipeline 17, and a part of the reuse water is pumped into the backwash water inlet pipeline 17 through the lift pump 16, so that the equipment backwash water requirement is met.
Preferably, the cultivation tail water treatment system further comprises a sludge treatment device, and the rotary drum micro-filter can be connected with the sludge treatment device through a pipeline so as to convey backwash wastewater to the sludge treatment device. Specifically, the sludge treatment apparatus includes a concentration tank 10, a screw pump 11, and a plate and frame filter press 12, and the concentration tank 10 is disposed upstream of the plate and frame filter press 12 and both are connected via piping. The screw pump 11 is provided in a pipeline between the concentration tank 10 and the plate and frame filter press 12. The concentration tank 10 is connected with the rotary drum micro-filter through a sewage discharge pipeline and is used for receiving the solid pollutants filtered by the micro-filtration device 2. The concentration tank 10 is allowed to stand by gravity to perform sedimentation separation of contaminants. The concentration tank 10 and the plate-and-frame filter press 12 are connected with return pipes, respectively. The supernatant of the concentration tank 10 is refluxed to the regulating tank 1 through a reflux pipeline 20, and the lower precipitate is conveyed to a plate-and-frame filter press 12 through a screw pump 11. After the plate-and-frame filter press 12 performs filter pressing, supernatant flows back to the regulating tank 1 through the return pipeline 20, and solid pollutants are transported outwards, so that pollution is avoided.
Preferably, the aquaculture tail water treatment system comprises a control unit 21, wherein the control unit 21 takes a PLC as a core control unit, is in online communication with a liquid level sensor, a flowmeter, a pH sensor and an ORP sensor, and is in linkage with a lift pump 16 and an ozone generator 13. Specifically, the control unit may control the flow rate and the like of the lift pump 16 according to signals of at least one of the liquid level sensor, the flow meter, and the pH sensor; the control unit can control the start and stop of the ozone generator according to the signal of the ORP sensor. The control unit 21 has the functions of monitoring and displaying, parameter setting, fault alarming and controlling, and can realize automatic operation and remote control of the system through collecting the running state of the system and also can carry out linkage control with the fish circulating water culture system.
Through the treatment of the culture tail water, the treatment efficiency of the culture tail water can be effectively improved, and the culture tail water treatment system provided by the utility model has the advantages that all devices are independently arranged, the occupied area is small, and the maintenance is convenient. The recycling of the culture tail water can improve the utilization rate of resources and reduce the adverse effect of emission on the marine environment.
Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model pertains. The terminology used herein is for the purpose of describing particular implementations only and is not intended to be limiting of the utility model. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features unless the features are not applicable or otherwise indicated in the other embodiment.
The present utility model has been described by way of the above embodiments, but it should be understood that the above embodiments are for illustrative and explanatory purposes only and that the utility model is not limited to the above embodiments, but is capable of numerous variations and modifications in accordance with the teachings of the utility model, all of which fall within the scope of the utility model as claimed.
Claims (10)
1. A kind of cultivation tail water treatment system, characterized by, include
The water inlet end of the micro-filtration device is used for receiving the culture tail water;
the protein separation device comprises a protein separator, and the water inlet end of the protein separation device is connected with the water outlet end of the microfiltration device through a pipeline;
the water inlet end of the biological aerated filter is connected with the water outlet end of the protein separation device through a pipeline;
the water inlet end of the denitrification device is connected with the water outlet end of the biological aerated filter through a pipeline; and
the water inlet end of the activated carbon filter is connected with the water outlet end of the denitrification device through a pipeline, and the water outlet end of the activated carbon filter is used for outputting reuse water.
2. The aquaculture tail water treatment system according to claim 1 wherein at least one of said biological aerated filter, said denitrification device and said activated carbon filter is connected with a backwash water inlet line for receiving said reuse water.
3. The aquaculture tail water treatment system according to claim 2 wherein,
the device also comprises an adjusting tank for adjusting the pH value of the culture tail water and homogenizing the quality of the culture tail water, the adjusting tank is connected with the water inlet end of the micro-filtration device through a pipeline,
the at least one of the biological aerated filter, the denitrification device and the activated carbon filter is connected with the regulating tank through a backwash drainage pipeline.
4. The aquaculture tail water treatment system according to claim 2 further comprising a reuse pond, the water inlet end of the reuse pond being connected to the water outlet end of the activated carbon filter by a pipeline, the reuse pond being connected to the at least one of the biological aerated filter, the denitrification device and the activated carbon filter by the backwash water inlet pipeline.
5. The aquaculture tail water treatment system according to claim 1 to 4 wherein,
the air compressor is connected to at least one of the biological aerated filter, the denitrification device and the activated carbon filter through pipelines; and/or
The denitrification device comprises at least one of a denitrification filter, a strong oxidation tank and a nitrification filter.
6. The aquaculture tail water treatment system according to any one of claims 1 to 4, wherein the water outlet end of the microfiltration device is equal to or higher than the water inlet end of the protein separation device, the water outlet end of the protein separation device is equal to or higher than the water inlet end of the biological aerated filter, and the water outlet end of the biological aerated filter is equal to or higher than the water inlet end of the denitrification device.
7. The aquaculture tail water treatment system of any one of claims 1-4 further comprising an ozone generator connected to said protein separation device via a pipeline, an ORP sensor disposed in the pipeline at the water outlet end of said protein separation device, and a control unit controlling the start and stop of said ozone generator in accordance with the signals of said ORP sensor.
8. A aquaculture tail water treatment system according to any one of claims 1 to 4 further comprising an air compressor connected via piping to the bottom of the protein separation device, the top of which is provided with an overflow piping for discharging contaminants.
9. A aquaculture tail water treatment system according to any one of claims 1 to 4 wherein the microfiltration device comprises a rotary drum microfiltration machine, the aquaculture tail water treatment system further comprising a sludge treatment device, the rotary drum microfiltration machine being connected to the sludge treatment device via a pipeline to deliver backwash drainage to the sludge treatment device.
10. The aquaculture tail water treatment system according to claim 9 wherein the sludge treatment device comprises a concentration tank, a screw pump and a plate and frame filter press, the concentration tank being disposed upstream of the plate and frame filter press and connected via piping, the screw pump being disposed on the piping between the concentration tank and the plate and frame filter press, the concentration tank and the plate and frame filter press being connected with return piping, respectively.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117645389A (en) * | 2024-01-19 | 2024-03-05 | 广东巨邦生态环境科技有限公司 | Aquaculture tail water treatment system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117645389A (en) * | 2024-01-19 | 2024-03-05 | 广东巨邦生态环境科技有限公司 | Aquaculture tail water treatment system |
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