CN116081899A - Seawater culture tail water treatment device and method - Google Patents
Seawater culture tail water treatment device and method Download PDFInfo
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- CN116081899A CN116081899A CN202310271898.5A CN202310271898A CN116081899A CN 116081899 A CN116081899 A CN 116081899A CN 202310271898 A CN202310271898 A CN 202310271898A CN 116081899 A CN116081899 A CN 116081899A
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Images
Classifications
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- 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
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
- C02F1/325—Irradiation devices or lamp constructions
-
- 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
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- 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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal 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
- C02F2103/08—Seawater, e.g. for desalination
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
- C02F3/307—Nitrification and denitrification treatment characterised by direct conversion of nitrite to molecular nitrogen, e.g. by using the Anammox process
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention provides a mariculture tail water treatment device and a mariculture tail water treatment method, wherein the mariculture tail water treatment device comprises a mariculture pond and a purification box body, a first baffle plate, a second baffle plate and a third baffle plate are sequentially arranged in the purification box body along the flowing direction of waste liquid, the first baffle plate, the second baffle plate and the third baffle plate divide the interior of the purification box body into a sedimentation area, a filtering area, an aerobic area and an anaerobic area, the sedimentation area is connected with the outlet end of the mariculture pond, and the outlet end of the anaerobic area is connected with the mariculture pond through a water return pipeline so as to circulate the purified waste liquid to the mariculture pond. The invention integrates various processes such as precipitation, filtration, aerobic purification, anaerobic purification and the like, realizes the purification of the waste liquid discharged from the mariculture pond, and has simple equipment, good purification effect and strong stability.
Description
Technical Field
The invention belongs to the technical field of seawater aquiculture, relates to tail water treatment, and particularly relates to a seawater aquiculture tail water treatment device and method.
Background
Mariculture is a production activity of cultivating marine aquatic economic animals and plants by using coastal shoal beach, intensively cultivating fishes, shrimps, shellfishes, echinoderms (such as stichopus japonicus) and the like, and has shorter production period and higher yield per unit area, and the classification (1) can be divided into: fish, shrimp, crab, shellfish, algae, sea delite, etc.; (2) according to the degree of intensification, it can be divided into: coarse and semi-fine nourishment and fine nourishment; (3) can be divided into: singly (e.g., fish and shrimp) and intercropping (kelp and mussel).
However, the marine aquaculture causes serious offshore water pollution, such as water eutrophication, sediment environment change, antibiotic use pollution and the like, causes the decrease of the DO content of regional water, massive death of cultured organisms, massive propagation of anaerobic bacteria and marine ecological environment destruction, causes great economic loss to the aquaculture, and needs to timely purify the aquaculture wastewater to meet the emission requirement.
The existing mariculture wastewater treatment equipment has some defects, such as that floaters and impurities in wastewater easily cause blockage of filtering equipment to affect the subsequent treatment process, and when the wastewater is purified by using a biochemical treatment process, the organic matters, total nitrogen, ammonia nitrogen and total phosphorus are incompletely removed, so that water eutrophication is caused, and the wastewater cannot be recycled.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a mariculture tail water treatment device and method, which integrate various processes such as precipitation, filtration, aerobic purification, anaerobic purification and the like, realize purification of waste liquid discharged from a mariculture pond, and have the advantages of simple equipment, good purification effect and strong stability.
To achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the invention provides a mariculture tail water treatment device, which comprises a mariculture pond, and further comprises a purification box body, wherein a first baffle plate, a second baffle plate and a third baffle plate are sequentially arranged in the purification box body along the flow direction of waste liquid, the first baffle plate, the second baffle plate and the third baffle plate divide the interior of the purification box body into a sedimentation area, a filtering area, an aerobic area and an anaerobic area, the sedimentation area is connected with the outlet end of the mariculture pond, and the outlet end of the anaerobic area is connected with the mariculture pond through a water return pipeline so as to circulate purified waste liquid to the mariculture pond.
According to the mariculture tail water treatment device provided by the invention, the waste liquid generated by the mariculture pond is treated by the purification box body, the treatment capacity is high, the sedimentation area performs preliminary sedimentation of the waste liquid, so that large-particle pollutants in the waste liquid are settled to the bottom of the purification box body, and the waste liquid smoothly flows into the filtering area; the filtering area can filter out particles, suspended matters and aggregates in the waste liquid, and then the filtered waste liquid is sequentially sent into the aerobic area and the anaerobic area, and the physical interception of bacterial colonies, the biochemical actions of adsorption, absorption, oxidization and the like are utilized to intercept suspended matters in the waste liquid, so that pollutants such as organic matters, ammonia nitrogen, total nitrogen and the like are decomposed and removed, the waste water purifying effect is improved, and the recycling requirement is met.
As a preferable technical scheme of the invention, a first liquid outlet is reserved at the top of the inner cavity of the first partition plate and the inner cavity of the purifying box body, a second liquid outlet is reserved at the bottom of the inner cavity of the second partition plate and the inner cavity of the purifying box body, and a third liquid outlet is reserved at the top of the inner cavity of the third partition plate and the inner cavity of the purifying box body.
The waste liquid in the sedimentation zone flows into the filtering zone from the first liquid outlet for filtering, the filtered waste liquid flows into the aerobic zone from the second liquid outlet for aerobic purification treatment, and the waste liquid after the aerobic purification treatment flows into the anaerobic zone from the third liquid outlet for anaerobic purification treatment.
As a preferable technical scheme of the invention, a plurality of baffle plates are obliquely arranged in the sedimentation zone upwards, and the baffle plates are alternately arranged on the inner cavity wall of the purifying box body and the first baffle plates at intervals.
According to the invention, the flow time of the waste liquid in the sedimentation zone is prolonged by arranging the baffle plates, so that a curved flow line is formed, and the sedimentation effect is improved.
Preferably, an incubator is further arranged outside the purifying box body, the incubator is connected with the sedimentation zone and the aerobic zone through a sewage discharge pipeline and a feeding pipeline respectively, and the incubator is used for performing the domestication of activated sludge zoogloea on sediment discharged from the sedimentation zone and feeding the sediment into the aerobic zone.
Preferably, a water inlet is arranged at the bottom of the sedimentation zone and is used for being connected with a mariculture pond.
The invention utilizes sediment discharged from the sedimentation zone as raw material by arranging the incubator, and adds auxiliary materials (including but not limited to nutrient substances, accelerators or microelements) into the incubator to cultivate and domesticate activated sludge zoogloea, and sends the zoogloea into the aerobic zone, thereby being beneficial to decomposing organic matters and improving the purifying effect.
As a preferable technical scheme of the invention, a filter screen assembly is arranged in the filter area, and the filter screen assembly is suspended in the purifying box body through a lifting mechanism.
Preferably, the lifting mechanism comprises a driving piece, a telescopic rod, a connecting rod and a lifting rope, wherein the driving piece is fixed on the top of an inner cavity of the purifying box body, two ends of the telescopic rod are respectively connected with the driving piece and the connecting rod, the driving piece is used for driving the telescopic rod to stretch and retract, and the connecting rod is connected with the filter screen assembly through the lifting rope.
Preferably, the periphery of the telescopic rod is also sleeved with a telescopic spring, one end of the telescopic spring is fixed on the top surface of the inner cavity of the purifying box body, and the other end of the telescopic spring is connected with the connecting rod.
Preferably, two ends of the filter screen assembly are respectively and slidably connected with the first partition board and the second partition board.
It should be noted that, the sliding connection manner of the present invention is not particularly limited, and any manner known to those skilled in the art may be adopted, for example, a sliding groove may be independently formed on a side surface of the first partition plate and a side surface of the second partition plate, which are close to each other, rollers may be disposed at both ends of the filter screen assembly, so that the rollers slide in the sliding groove, and sliding rails may also be independently disposed on a side surface of the first partition plate and a side surface of the second partition plate, which are close to each other, and sliding blocks may be disposed at both ends of the filter screen assembly, so that the sliding blocks slide on the sliding rails.
The lifting mechanism is used for replacing the filter screen assembly, can provide vibration for the filter screen assembly and avoids mesh blockage. In the use, the driving piece drives the telescopic link and stretches out and draws back, and the flexible of telescopic link passes through the stay cord and transmits to the filter screen subassembly, makes it reciprocate along the upper and lower to through setting up telescopic spring, make its automatic reciprocating vibration, avoid blockking up the filter screen mesh.
Preferably, at least two V-shaped slag discharging plates are arranged in the filtering area, and the V-shaped slag discharging plates are positioned below the filter screen assembly.
Preferably, the top end of the V-shaped slag discharging plate is higher than the second liquid outlet.
As a preferable technical scheme of the invention, at least one biological filter material disc is arranged in the aerobic zone, and an aerobic bacteria attachment layer is arranged in the biological filter material disc.
Preferably, the bacterial in the aerobic bacterial attachment layer comprises nitrites and/or nitroses.
Preferably, a filler matrix is further arranged at the bottom of the biological filter material tray, and activated sludge zoogloea is filled in the filler matrix.
As a preferable technical scheme of the invention, an aeration mechanism is further arranged below the biological filter material disc, the aeration mechanism comprises an oxygen supply assembly, a guide rod and an aeration cylinder, two ends of the guide rod are respectively connected with the second partition plate and the third partition plate, the aeration cylinder is rotatably sleeved on the periphery of the guide rod, and the oxygen supply assembly is used for supplying oxygen into the aeration cylinder.
Preferably, a plurality of oxygen supply through holes are formed along the peripheral wall of the aeration cylinder, and oxygen in the aeration cylinder enters the aerobic zone through the oxygen supply through holes.
Preferably, the aerobic zone is further rotatably provided with a supporting rod, one end of the supporting rod is provided with a first bevel gear, the other end of the supporting rod is rotatably connected with the top of the purifying box body through a driving motor, the periphery of the aeration cylinder is sleeved with a second bevel gear, and the first bevel gear and the second bevel gear are meshed with each other.
The dissolved oxygen content in the water body in the aerobic zone has a great influence on the aerobic bacteria attachment layer and the bacterial colony in the activated sludge zoogloea, so that the invention continuously aerates the water body in the aerobic zone by arranging the aeration mechanism, ensures the oxygen content in the water body, meets the oxygen content required by the normal growth activity of the bacterial colony and improves the metabolic capacity of the bacterial colony. According to the invention, the driving motor drives the supporting rod to rotate, so that the first bevel gear rotates, the first bevel gear is meshed with the second bevel gear, and the aeration barrel is driven to rotate, so that oxygen is uniformly distributed in a water body.
Preferably, the biological filter disc is suspended on the support rod.
As a preferable technical scheme of the invention, at least two biological filter cartridges are sequentially arranged side by side from top to bottom in the anaerobic zone, and anaerobic bacteria attachment layers are arranged in the biological filter cartridges.
Preferably, two ends of the biological filter cylinder are respectively connected with the second partition board and the third partition board through foam sleeves.
Preferably, the bacterial species within the anaerobic bacterial attachment layer comprise denitrifying bacteria and/or anammox bacteria.
As a preferable technical scheme of the invention, the water return pipeline is also respectively communicated with the tops of the sedimentation zone and the aerobic zone through a first backflushing branch pipe, and is also respectively communicated with the bottoms of the filtration zone and the anaerobic zone through a second backflushing branch pipe so as to backflush the sedimentation zone, the filtration zone, the aerobic zone and the anaerobic zone.
Preferably, the water return pipeline is further provided with a disinfection mechanism, and the disinfection mechanism is used for disinfecting the effluent of the anaerobic zone.
Preferably, the disinfecting means comprises an ultraviolet disinfecting means and/or an ozone disinfecting means.
In a second aspect, the present invention provides a method for treating a mariculture tail water, wherein the method adopts the mariculture tail water treatment device of the first aspect to purify waste liquid discharged from a mariculture pond, and the method comprises the following steps:
delivering the waste liquid in the mariculture pond into a purifying box body, sequentially performing primary precipitation, filtering treatment, aerobic purification treatment and anaerobic purification treatment, and refluxing the purified waste liquid into the mariculture pond.
According to the mariculture tail water treatment method provided by the invention, the waste water of the mariculture pond is sequentially subjected to precipitation, filtration, aerobic purification treatment and anaerobic purification treatment, so that particles, aggregates, suspended matters and the like in the waste water are effectively removed, pollutants such as organic matters, ammonia nitrogen, total nitrogen and the like are decomposed and removed, and the water outlet effect is improved.
As a preferred embodiment of the present invention, the preliminary precipitation includes:
and discharging waste liquid in the mariculture pond from the bottom of the sedimentation area, under the action of the baffle plate, obtaining first effluent and slag, wherein the first effluent flows to the filtering area from a first liquid outlet at the top of the first baffle plate, and the slag is discharged through a sewage discharge pipeline.
Preferably, the filtering process includes: the first effluent flows in from the top of the filtering area, fine filtration is carried out under the action of the filter screen assembly to obtain second effluent, and the second effluent flows to the aerobic area from a second liquid outlet at the bottom of the second partition plate.
Preferably, the aerobic purification treatment comprises: the second effluent flows in from the bottom of the aerobic zone, passes through an aerobic bacteria attachment layer arranged in the biological filter material disc to remove pollutants to obtain third effluent, and flows to the anaerobic zone from a third liquid outlet at the top of the third partition plate;
preferably, the anaerobic purification treatment comprises: and the third effluent flows in from the top of the anaerobic zone, sequentially passes through at least two biological filter cartridges to remove pollutants to finish purification, and flows back into the mariculture pond through a water return pipeline.
Preferably, the processing method further comprises: and (3) sending the slag in the precipitation area into an incubator through a sewage pipeline for domestication of activated sludge zoogloea, and sending the obtained activated sludge zoogloea into an aerobic area for aerobic purification treatment.
Compared with the prior art, the invention has the beneficial effects that:
according to the mariculture tail water treatment device and method provided by the invention, the waste liquid generated by the mariculture pond is treated by the purification box body, the treatment capacity is high, the sedimentation area carries out preliminary sedimentation of the waste liquid, so that large-particle pollutants in the waste liquid are settled to the bottom of the purification box body, and the waste liquid smoothly flows into the filtering area; the filter screen assembly filters particles, suspended matters and agglomerates in the waste liquid, and then the filtered waste liquid is sequentially sent into an aerobic zone and an anaerobic zone, and physical interception of bacterial colonies, adsorption, absorption, oxidization and other biochemical actions are utilized to intercept suspended matters in the waste liquid, decompose and remove pollutants such as organic matters, ammonia nitrogen, total nitrogen and the like, so that the waste water purifying effect is improved, and the recycling requirement is met.
Drawings
FIG. 1 is a schematic diagram of a mariculture tail water treatment device according to an embodiment of the present invention;
FIG. 2 is a schematic view of a filtration zone according to an embodiment of the present invention;
fig. 3 is a schematic structural view of an aerobic zone according to an embodiment of the present invention.
Wherein, the seawater is 1-cultured in a pond; 2-purifying the box body; 3-a first separator; 4-a second separator; 5-a third separator; a 6-precipitation zone; 7-a filtration zone; 8-an aerobic zone; 9-an anaerobic zone; 10-baffle plate; 11-a sewage pipeline; 12-incubator; 13-a feeding pipeline; 14-a filter screen assembly; 15-a lifting mechanism; 151-driving member; 152-connecting rods; 153-telescoping rod; 154-lifting rope; 155-a telescopic spring; 16- "V" type slag discharging plate; 17-an aeration cylinder; 18-a guide rod; 19-supporting rods; 20-a biological filter disc; 21-a filler matrix; 22-a first bevel gear; 23-a second bevel gear; 24-biological filter cartridges; 25-foam sleeve; 26-a water return pipeline; 27-a first recoil branch pipe; 28-a second recoil branch pipe; 29-a sterilizing mechanism; 30-a first liquid outlet; 31-a second liquid outlet; 32-a third liquid outlet.
Detailed Description
It is to be understood that in the description of the present invention, the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus are not to be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
It should be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "disposed," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
It will be appreciated by those skilled in the art that the present invention necessarily includes the necessary piping, conventional valves and general pumping equipment for achieving the process integrity, but the foregoing is not a major inventive aspect of the present invention, and that the present invention is not particularly limited thereto as the layout may be added by themselves based on the process flow and the equipment configuration options.
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
In a specific embodiment, the invention provides a mariculture tail water treatment device, which comprises a mariculture pond 1 and a purification box body 2, wherein a first baffle plate 3, a second baffle plate 4 and a third baffle plate 5 are sequentially arranged in the purification box body 2 along the flowing direction of waste liquid, the first baffle plate 3, the second baffle plate 4 and the third baffle plate 5 divide the interior of the purification box body 2 into a sedimentation zone 6, a filtering zone 7, an aerobic zone 8 and an anaerobic zone 9, the sedimentation zone 6 is connected with the outlet end of the mariculture pond 1, and the outlet end of the anaerobic zone 9 is connected with the mariculture pond 1 through a water return pipeline 26 so as to circulate purified waste liquid to the mariculture pond 1.
In some embodiments, the first partition 3 and the top of the inner cavity of the purifying box 2 leave a first liquid outlet 30, the second partition 4 and the bottom of the inner cavity of the purifying box 2 leave a second liquid outlet 32, and the third partition 5 and the top of the inner cavity of the purifying box 2 leave a third liquid outlet 33. The waste liquid in the sedimentation zone 6 flows into the filtering zone 7 from the first liquid outlet 30 for filtering, the filtered waste liquid flows into the aerobic zone 8 from the second liquid outlet 32 for aerobic purification treatment, and the waste liquid after the aerobic purification treatment flows into the anaerobic zone 9 from the third liquid outlet 33 for anaerobic purification treatment. The bottom of the sedimentation zone 6 is provided with a water inlet which is used for being connected with the mariculture pond 1. In the invention, waste liquid flows in from the bottom of a sedimentation zone 6, particles, suspended matters, agglomerates and the like in the waste liquid naturally settle to the bottom of the sedimentation zone 6, the settled waste liquid flows in the filtration zone 7 from the top of the filtration zone 7 for filtration, the filtered waste water flows in the aerobic zone 8 from the bottom of the aerobic zone 8 for aerobic purification treatment, and then flows in the anaerobic zone 9 from the top of the anaerobic zone 9.
In some embodiments, a plurality of baffles 10 are obliquely arranged in the settling zone 6, and the baffles 10 are alternately arranged on the inner cavity wall of the purifying box 2 and the first partition plate 3 at intervals. According to the invention, the baffle plates 10 are arranged to prolong the residence time of the waste liquid in the sedimentation zone 6, so that a curved flow line is formed, and the sedimentation effect is improved.
In some embodiments, an incubator 12 is further disposed outside the purifying box 2, the incubator 12 is connected to the settling zone 6 and the aerobic zone 8 through a sewage drain pipe 11 and a feeding pipe 13, and the incubator 12 is used for performing activated sludge zoogloea training on the sediment discharged from the settling zone 6 and feeding the sediment into the aerobic zone 8. According to the invention, the throwing port is arranged on the incubator 12, sediment discharged from the sedimentation zone 6 is used as a raw material, and auxiliary materials (including but not limited to nutrients, accelerators or microelements) are thrown into the incubator 12 to culture and domesticate activated sludge zoogloea and send the activated sludge zoogloea into the aerobic zone 8, so that the organic matters are decomposed, and the purifying effect is improved.
In some embodiments, as shown in fig. 2, a filter screen assembly 14 is disposed in the filter area 7, and the filter screen assembly 14 is suspended in the purifying tank 2 by a lifting mechanism 15. The lifting mechanism 15 comprises a driving piece 151, a telescopic rod 153, a connecting rod 152 and a lifting rope 154, wherein the driving piece 151 is fixed on the top of an inner cavity of the purifying box body 2, two ends of the telescopic rod 153 are respectively connected with the driving piece 151 and the connecting rod 152, the driving piece 151 is used for driving the telescopic rod 153 to stretch and retract, and the connecting rod 152 is connected with the filter screen assembly 14 through the lifting rope 154. The outer periphery of the telescopic rod 153 is further sleeved with a telescopic spring 155, one end of the telescopic spring 155 is fixed on the top surface of the inner cavity of the purifying box body 2, and the other end of the telescopic spring is connected with the connecting rod 152. The two ends of the filter screen assembly 14 are respectively and slidably connected with the first partition board 3 and the second partition board 4, a sliding groove can be independently formed in one side surface of the first partition board 3 and one side surface of the second partition board 4, which are close to each other, and rollers are arranged at the two ends of the filter screen assembly 14, so that the rollers slide in the sliding groove, or sliding rails can be independently arranged in one side surface of the first partition board 3 and one side surface of the second partition board 4, which are close to each other, and sliding blocks are arranged at the two ends of the filter screen assembly 14, so that the sliding blocks slide on the sliding rails. The lifting mechanism 15 is used for replacing the filter screen assembly 14, and can provide vibration for the filter screen assembly 14 to avoid mesh blockage. In the use, the driving piece 151 drives the telescopic link 153 to stretch out and draw back, and the telescopic link 153 stretches out and draws back and passes through the stay cord 154 and transmit to filter screen subassembly 14, makes it reciprocate along the axial of first baffle 3 and second baffle 4 to through setting up telescopic spring 155, make its automatic reciprocating vibration, avoid blockking up the filter screen mesh.
In some embodiments, at least two "V" shaped slag discharging plates 16 are also disposed in the filtering section 7, and the "V" shaped slag discharging plates 16 are located below the filtering screen assembly 14. The top end of the V-shaped slag discharging plate 16 is higher than the second liquid outlet 32. Slag or aggregate which is not thoroughly filtered still exists in the filtered waste liquid, and filter residues are prevented from entering a subsequent treatment area from the second liquid outlet 32 under the blocking effect of the V-shaped slag discharging plate 16, so that the treatment effect is prevented from being influenced.
In some embodiments, as shown in fig. 3, at least one biological filter tray 20 is disposed in the aerobic zone 8, and an aerobic bacteria attachment layer is disposed in the biological filter tray 20. The strain in the aerobic bacteria attachment layer comprises nitrifying bacteria and/or nitrosating bacteria. The invention utilizes the biochemical actions of decomposing, adsorbing, oxidizing and the like of pollutants such as organic matters, nitrate, total nitrogen and the like in the waste liquid by utilizing the aerobic bacterial colony, reduces the concentration of the pollutants and obtains good degradation effect.
In some embodiments, the bottom of the biological filter tray 20 is further provided with a filler matrix 21, and the filler matrix 21 is filled with activated sludge zoogloea. The activated sludge zoogloea filled with the filler matrix 21 is prepared by domesticating slag materials after sludge-water separation in the precipitation zone 6, and organic pollutants in sewage are decomposed and removed by utilizing the biological aggregation, adsorption and oxidation effects of the slag materials, so that the purification effect and the economic benefit of wastewater treatment are improved.
In some embodiments, an aeration mechanism is further disposed below the biological filter tray 20, the aeration mechanism includes an oxygen supply assembly, a guide rod 18 and an aeration cylinder 17, two ends of the guide rod 18 are respectively connected with the second partition plate 4 and the third partition plate 5, the aeration cylinder 17 is rotatably sleeved on the periphery of the guide rod 18, and the oxygen supply assembly is used for providing oxygen into the aeration cylinder 17. A plurality of oxygen supply through holes are formed along the peripheral wall of the aeration cylinder 17, and oxygen in the aeration cylinder 17 enters the aerobic zone 8 from the oxygen supply through holes. A supporting rod 19 is further rotatably arranged in the aerobic zone 8, and the biological filter material disc 20 is suspended on the supporting rod 19. One end of the supporting rod 19 is provided with a first bevel gear 22, the other end of the supporting rod is rotatably connected with the top of the purifying box body 2 through a driving motor, a second bevel gear 23 is sleeved on the periphery of the aeration cylinder 17, and the first bevel gear 22 and the second bevel gear 23 are meshed with each other.
The dissolved oxygen content in the water body in the aerobic zone 8 has a great influence on the aerobic bacteria attachment layer and bacterial colonies in the activated sludge zoogloea, so that the oxygen-containing bacteria in the water body can be continuously aerated by arranging the aeration mechanism in the aerobic zone 8, the oxygen content in the water body can be ensured, the oxygen content required by the normal growth activity of the bacterial colonies can be met, and the metabolic capacity of the bacterial colonies can be improved. According to the invention, the driving motor drives the supporting rod 19 to rotate, so that the first bevel gear 22 rotates, the first bevel gear 22 is meshed with the second bevel gear 23, and the aeration cylinder 17 is driven to rotate, so that oxygen is uniformly distributed in a water body. In addition, the biological filter material tray 20 can rotate along with the rotation of the support rod 19, the rotation speed of the biological filter material tray 20 is adjusted according to actual conditions, and the phenomenon that residues in waste liquid are accumulated or bacterial colonies are agglomerated to cause blockage is avoided, so that the biodegradability is reduced.
In some embodiments, at least two biological filter cartridges 24 are disposed side by side in the anaerobic zone 9 sequentially from top to bottom, and an anaerobic bacteria attachment layer is disposed in the biological filter cartridges 24. The two ends of the biological filter cylinder 24 are respectively connected with the second partition board 4 and the third partition board 5 through foam sleeves 25. The bacteria in the anaerobic bacteria attachment layer comprise denitrifying bacteria and/or anaerobic ammonia oxidizing bacteria. The invention removes organic matters, ammonia nitrogen, total nitrogen and other pollutants in the waste liquid through the physical interception effect, adsorption, oxidation, synthesis and other biochemical effects of the anaerobic bacteria attachment layer, thereby meeting the recycling requirement. The foam sleeves 25 are prevented from floating at both ends of the bio-filter under the buoyancy of water, so that not only can the pollutants in the water be effectively contacted, but also the bio-filter 24 can be prevented from falling off.
In some embodiments, the water return pipeline 26 is further respectively connected to the tops of the settling zone 6 and the aerobic zone 8 through a first back flushing branch pipe 27, and the water return pipeline 26 is further respectively connected to the bottoms of the filtering zone 7 and the anaerobic zone 9 through a second back flushing branch pipe 28, so as to back flush the settling zone 6, the filtering zone 7, the aerobic zone 8 and the anaerobic zone 9. The invention respectively backflushes the sedimentation zone 6, the filtering zone 7, the aerobic zone 8 and the anaerobic zone 9 through the first backflushing branch pipe 27 and the second backflushing branch pipe 28, agitates suspended matters, microorganisms or aggregates and the like trapped on the bottom of the sedimentation zone 6, the filter screen assembly 14, the slag discharging plate, the biological filter material tray 20 and the raw filter cartridge, and mixes the suspended matters, microorganisms or aggregates in the water body after the suspended matters, the microorganisms or the aggregates fall off.
In some embodiments, a disinfection mechanism 29 is further disposed on the water return pipeline 26, and the disinfection mechanism 29 is used for disinfecting the effluent of the anaerobic zone 9. The sterilizing mechanism 29 includes an ultraviolet sterilizing mechanism 29 and/or an ozone sterilizing mechanism 29. The invention adopts the disinfection mechanism 29 to disinfect the effluent, thereby avoiding adverse effects on the seed breeding in the mariculture pond 1.
In another embodiment, the invention provides a method for treating seawater culture tail water, wherein the method adopts the seawater culture tail water treatment device in one embodiment to purify waste liquid discharged from a seawater culture pond 1, and the treatment method comprises the following steps:
delivering the waste liquid in the mariculture pond 1 into the purifying box body 2, sequentially performing primary precipitation, filtering treatment, aerobic purification treatment and anaerobic purification treatment, and refluxing the purified waste liquid into the mariculture pond 1.
According to the mariculture tail water treatment method provided by the invention, the waste water of the mariculture pond 1 is sequentially subjected to precipitation, filtration, aerobic purification treatment and anaerobic purification treatment, so that particles, aggregates, suspended matters and the like in the waste water are effectively removed, pollutants such as organic matters, ammonia nitrogen, total nitrogen and the like are decomposed and removed, and the water outlet effect is improved.
In some embodiments, the treatment method specifically includes the steps of:
(1) Discharging waste liquid in the mariculture pond 1 from the bottom of a sedimentation zone 6, settling suspended matters in the waste liquid under the action of a baffle plate 10, separating the suspended matters from the waste liquid to obtain first effluent and slag, wherein the first effluent flows to a filtering zone 7 from a first liquid outlet 30 at the top of a first baffle plate 3, and the slag is discharged into an incubator 12 through a sewage discharge pipeline 11;
(2) The first effluent flows in from the top of the filtering area 7, fine filtration is carried out under the action of the filter screen assembly 14 to obtain second effluent, slag or aggregate which is not thoroughly filtered is removed by the second effluent through the V-shaped slag discharging plate 16, and the second effluent flows into the aerobic area 8 from the second liquid outlet 32 at the bottom of the second partition plate 4;
(3) After filtering for a period of time, the driving part 151 is started to drive the telescopic rod 153 to stretch, and the stretching of the telescopic rod 153 is transmitted to the filter screen assembly 14 through the lifting rope 154 so as to enable the filter screen assembly to move up and down along the axial directions of the first partition plate 3 and the second partition plate 4, and the filter screen assembly automatically vibrates in a reciprocating mode through the telescopic spring 155, so that the filter screen meshes are prevented from being blocked;
(4) The second effluent flows in from the bottom of the aerobic zone 8, a driving motor is started to drive a supporting rod 19 to rotate, so that a first bevel gear 22 rotates, the first bevel gear 22 is meshed with a second bevel gear 23, and further an aeration cylinder 17 is driven to rotate, so that oxygen is uniformly distributed in a water body to be aerated, the second effluent passes through an aerobic bacteria attachment layer arranged in a biological filter material disc 20 and activated sludge zoogloea in a filler matrix 21, organic pollutants are removed, and third effluent is obtained, and flows into the anaerobic zone 9 from a third liquid outlet 33 at the top of a third partition plate 5;
(5) The third effluent flows in from the top of the anaerobic zone 9, sequentially passes through at least two biological filter cartridges 24 to remove pollutants for purification, and flows back into the mariculture pond 1 through a water return pipeline 26;
(6) Taking slag materials fed into the incubator 12 as raw materials, adding auxiliary agents such as nutrient substances, accelerators, trace elements and the like into the incubator 12, performing domestication on activated sludge zoogloea, and feeding the obtained activated sludge zoogloea into an aerobic zone 8 for aerobic purification treatment;
(7) The clean effluent in the water return pipeline 26 is backwashed in the sedimentation zone 6, the filtering zone 7, the aerobic zone 8 and the anaerobic zone 9 through the first backwashing branch pipe 27 and the second backwashing branch pipe 28 respectively, and suspended matters, microorganisms or aggregates and the like trapped on the bottom of the sedimentation zone 6, the filter screen assembly 14, the slag discharging plate, the biological filter material disc 20 and the raw filter cartridge are stirred so as to be fallen off and then mixed in the water body for the next purification treatment.
The applicant declares that the above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be apparent to those skilled in the art that any changes or substitutions that are easily conceivable within the technical scope of the present invention disclosed by the present invention fall within the scope of the present invention and the disclosure.
The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the scope of the technical concept of the present invention, and all the simple modifications belong to the protection scope of the present invention.
Claims (10)
1. The utility model provides a mariculture tail water treatment facilities, includes the mariculture pond, its characterized in that, processing apparatus still includes the purification box, first baffle, second baffle and third baffle have been set gradually along waste liquid flow direction in the purification box, first baffle, second baffle and third baffle will the internal separation of purification box is sedimentation zone, filtration zone, good oxygen district and anaerobism district, the sedimentation zone is connected the exit end in mariculture pond, the exit end in anaerobism district is passed through the return water piping connection the mariculture pond to with the waste liquid circulation after purifying to the mariculture pond.
2. The mariculture tail water treatment device according to claim 1, wherein a first liquid outlet is formed in the top of the inner cavity of the first partition plate and the inner cavity of the purifying box body, a second liquid outlet is formed in the bottom of the inner cavity of the second partition plate and the inner cavity of the purifying box body, and a third liquid outlet is formed in the top of the inner cavity of the third partition plate and the inner cavity of the purifying box body;
the waste liquid in the sedimentation zone flows into the filtering zone from the first liquid outlet for filtering, the filtered waste liquid flows into the aerobic zone from the second liquid outlet for aerobic purification treatment, and the waste liquid after the aerobic purification treatment flows into the anaerobic zone from the third liquid outlet for anaerobic purification treatment.
3. The mariculture tail water treatment device according to claim 1 or 2, wherein a plurality of baffle plates are obliquely arranged upwards in the sedimentation zone, and the baffle plates are alternately arranged on the inner cavity wall of the purifying box body and the first baffle plates at intervals;
preferably, an incubator is further arranged outside the purifying box body, the incubator is connected with the sedimentation zone and the aerobic zone through a sewage discharge pipeline and a feeding pipeline respectively, and the incubator is used for performing the domestication of activated sludge zoogloea on sediment discharged from the sedimentation zone and feeding the sediment into the aerobic zone;
preferably, a water inlet is arranged at the bottom of the sedimentation zone and is used for being connected with a mariculture pond.
4. A mariculture tail water treatment device according to any one of claims 1-3, wherein a filter screen assembly is arranged in the filter area, and the filter screen assembly is suspended in the purification box body through a lifting mechanism;
preferably, the lifting mechanism comprises a driving piece, a telescopic rod, a connecting rod and a lifting rope, wherein the driving piece is fixed at the top of an inner cavity of the purifying box body, two ends of the telescopic rod are respectively connected with the driving piece and the connecting rod, the driving piece is used for driving the telescopic rod to stretch and retract, and the connecting rod is connected with the filter screen assembly through the lifting rope;
preferably, the periphery of the telescopic rod is also sleeved with a telescopic spring, one end of the telescopic spring is fixed on the top surface of the inner cavity of the purifying box body, and the other end of the telescopic spring is connected with the connecting rod;
preferably, two ends of the filter screen assembly are respectively and slidably connected with the first partition board and the second partition board;
preferably, at least two V-shaped slag discharging plates are arranged in the filtering area, and the V-shaped slag discharging plates are positioned below the filter screen assembly;
preferably, the top end of the V-shaped slag discharging plate is higher than the second liquid outlet.
5. The mariculture tail water treatment device according to any one of claims 1-4, wherein at least one biological filter disc is arranged in the aerobic zone, and an aerobic bacteria attachment layer is arranged in the biological filter disc;
preferably, the strain in the aerobic bacteria attachment layer comprises nitrifying bacteria and/or nitrosating bacteria;
preferably, a filler matrix is further arranged at the bottom of the biological filter material tray, and activated sludge zoogloea is filled in the filler matrix.
6. The mariculture tail water treatment device according to claim 5, wherein an aeration mechanism is further arranged below the biological filter material disc, the aeration mechanism comprises an oxygen supply assembly, a guide rod and an aeration cylinder, two ends of the guide rod are respectively connected with the second partition plate and the third partition plate, the aeration cylinder is rotatably sleeved on the periphery of the guide rod, and the oxygen supply assembly is used for supplying oxygen into the aeration cylinder;
preferably, a plurality of oxygen supply through holes are formed along the peripheral wall of the aeration cylinder, and oxygen in the aeration cylinder enters the aerobic zone through the oxygen supply through holes;
preferably, a supporting rod is further rotatably arranged in the aerobic zone, one end of the supporting rod is provided with a first bevel gear, the other end of the supporting rod is rotatably connected with the top of the purifying box body through a driving motor, a second bevel gear is sleeved on the periphery of the aeration cylinder, and the first bevel gear is meshed with the second bevel gear;
preferably, the biological filter disc is suspended on the support rod.
7. The mariculture tail water treatment device according to any one of claims 1-6, wherein at least two biological filter cartridges are sequentially arranged side by side from top to bottom in the anaerobic zone, and an anaerobic bacteria attachment layer is arranged in each biological filter cartridge;
preferably, two ends of the biological filter cylinder are respectively connected with the second partition board and the third partition board through foam sleeves;
preferably, the bacterial species within the anaerobic bacterial attachment layer comprise denitrifying bacteria and/or anammox bacteria.
8. The mariculture tail water treatment device according to any one of claims 1 to 7, wherein the water return pipeline is further communicated with the tops of the sedimentation zone and the aerobic zone through a first backflushing branch pipe respectively, and the water return pipeline is further communicated with the bottoms of the filtration zone and the anaerobic zone through a second backflushing branch pipe respectively, so as to backflush the sedimentation zone, the filtration zone, the aerobic zone and the anaerobic zone;
preferably, the water return pipeline is further provided with a disinfection mechanism, and the disinfection mechanism is used for disinfecting the effluent of the anaerobic zone;
preferably, the disinfecting means comprises an ultraviolet disinfecting means and/or an ozone disinfecting means.
9. A method for treating mariculture tail water, characterized in that the method adopts the mariculture tail water treatment device as claimed in any one of claims 1-8 to purify waste liquid discharged from a mariculture pond, and the method comprises the following steps:
delivering the waste liquid in the mariculture pond into a purifying box body, sequentially performing primary precipitation, filtering treatment, aerobic purification treatment and anaerobic purification treatment, and refluxing the purified waste liquid into the mariculture pond.
10. A method of treating mariculture tail water according to claim 9, wherein the preliminary precipitation comprises:
discharging waste liquid in the mariculture pond from the bottom of the sedimentation area, under the action of a baffle plate, obtaining first effluent and slag, wherein the first effluent flows to the filtering area from a first liquid outlet at the top of a first baffle plate, and the slag is discharged through a sewage discharge pipeline;
preferably, the filtering process includes: the first effluent flows in from the top of the filtering area, fine filtration is carried out under the action of the filter screen assembly to obtain second effluent, and the second effluent flows to the aerobic area from a second liquid outlet at the bottom of the second partition plate;
preferably, the aerobic purification treatment comprises: the second effluent flows in from the bottom of the aerobic zone, passes through an aerobic bacteria attachment layer arranged in the biological filter material disc to remove pollutants to obtain third effluent, and flows to the anaerobic zone from a third liquid outlet at the top of the third partition plate;
preferably, the anaerobic purification treatment comprises: the third effluent flows in from the top of the anaerobic zone, sequentially passes through at least two biological filter cartridges to remove pollutants to finish purification, and flows back into the mariculture pond through a water return pipeline;
preferably, the processing method further comprises: and (3) sending the slag in the precipitation area into an incubator through a sewage pipeline for domestication of activated sludge zoogloea, and sending the obtained activated sludge zoogloea into an aerobic area for aerobic purification treatment.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117303544A (en) * | 2023-10-20 | 2023-12-29 | 老河口市天和科技有限公司 | 2-chloronicotinic acid waste water treatment device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117303544A (en) * | 2023-10-20 | 2023-12-29 | 老河口市天和科技有限公司 | 2-chloronicotinic acid waste water treatment device |
| CN117303544B (en) * | 2023-10-20 | 2024-05-07 | 老河口市天和科技有限公司 | 2-Chloronicotinic acid waste water treatment device |
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