CN117502360B - Ecological cycle system is bred to little algae in pond combination - Google Patents
Ecological cycle system is bred to little algae in pond combination Download PDFInfo
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Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/003—Aquaria; Terraria
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
-
- 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
-
- 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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/06—Nutrients for stimulating the growth of microorganisms
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
- C02F3/322—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae use of algae
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention relates to the technical field of microalgae cultivation, in particular to a fish pond combined microalgae cultivation ecological circulation system, which comprises a fish pond, a sedimentation tank, a biological aeration tank, a balance water control tank, a microalgae cultivation tank, a microalgae collection and filtration module and a circulating water system; the microalgae cultivation pond is used for intelligently cultivating microalgae; the microalgae collecting and filtering module is used for filtering and collecting microalgae; the circulating water system is used for extracting tail water in the fishpond, filtering and performing innocent treatment, and then feeding the tail water into a microalgae culture pond to provide nutrition for microalgae; collecting microalgae through a microalgae collecting and filtering module, and circulating filtered purified water containing a small amount of microalgae into a fish pond; or the algae-rich liquid in the microalgae culture pond is sent to a fish pond to provide foodstuff for fish; the method aims at solving the problem that an effective microalgae cultivation ecological circulation system is lacked in the existing fishpond cultivation process so as to pertinently and circularly cultivate, utilize and produce microalgae in the fishpond, and achieves the reciprocal symbiosis of fishpond cultivation and microalgae production.
Description
Technical Field
The invention relates to the technical field of aquaculture, in particular to a fish pond combined microalgae culture ecological cycle system.
Background
Microalgae in a fish pond are produced mainly through microalgae spores or cells in nature entering the fish pond along with water and are propagated under proper environmental conditions, moderate microalgae growth is beneficial to water quality in fish pond culture, natural foods of fishes can be provided, oxygen is produced through photosynthesis, water quality is improved, and reasonable control and management of microalgae growth in the fish pond are important links in aquaculture.
In existing fish pond culture, management of microalgae is often regarded as a secondary problem, and an effective ecological circulation system for microalgae culture is lacked to treat microalgae in a fish pond in a targeted manner, so that the problems are caused: firstly, microalgae in a fish pond are not effectively recycled, and water quality is deteriorated due to growth runaway, so that the health and growth of fishes are affected; secondly, the failure to effectively utilize the characteristics of microalgae means that resources for improving the overall production efficiency of the fishpond are missed; finally, no reasonable microalgae cultivation ecological circulation system exists, and the rest microalgae are easy to cause environmental pollution during the cleaning of the fishpond.
For this reason, there is an urgent need for a pond combined microalgae cultivation ecological cycle system that can incorporate microalgae in a pond into a system for circulating cultivation, utilization and production. The system not only can improve the production efficiency of microalgae and reduce the cost, but also can furthest reduce the environmental impact and realize economic and ecological multiple benefits.
Disclosure of Invention
The application mainly aims to provide a combined microalgae cultivation ecological cycle system for a fish pond, which aims to solve the problem that an effective microalgae cultivation ecological cycle system is lacked in the existing fish pond cultivation process so as to pertinently and circularly cultivate, utilize and produce microalgae in the fish pond, thereby fully utilizing the characteristics of the microalgae in the aspects of water quality purification, cultivation efficiency improvement and environmental protection and realizing the reciprocal symbiosis of fish pond cultivation and microalgae production.
In order to achieve the technical aim, the application provides a fish pond combined microalgae cultivation ecological circulation system, which comprises a fish pond, a sedimentation tank, a biological aeration tank, a balance water control tank, a microalgae cultivation tank, a microalgae collection and filtration module, a monitoring system and a circulating water system; the method is characterized in that:
The fishpond comprises a freshwater aquaculture pond or a mariculture pond;
The sedimentation tank is used for receiving the tail water of the fish pond, carrying out sedimentation filtration on solid wastes in the tail water of the fish pond and carrying out sterilization treatment on the tail water;
the biological aeration tank is added with probiotics, and the probiotics are used for absorbing nutrient substances which cannot be treated by algae;
The balance water control tank is used for adjusting the balance water quantity and the concentration of microalgae nutrients;
the microalgae culture pond is used for carrying out intelligent culture on microalgae;
the microalgae collecting and filtering module is used for receiving the microalgae culture liquid in the microalgae culture pond and filtering and collecting microalgae in the microalgae culture liquid;
the monitoring system is used for monitoring the water environment in the microalgae culture pond;
the circulating water system is used for extracting tail water in the fishpond, filtering and performing innocent treatment, and then feeding the tail water into a microalgae culture pond to provide nutrient solution for microalgae; collecting microalgae through a microalgae collecting and filtering module, and circulating filtered purified water containing a small amount of microalgae into a fish pond; or the algae-rich liquid in the microalgae culture pond is sent to a fish pond to provide foodstuff for fish.
As a preferable technical scheme of the application, the bottom of the sedimentation tank is provided with a sewage outlet; one or more UV lamps are arranged in the sedimentation tank.
As a preferable technical scheme of the application, the biological aeration tank comprises one or more of nitrogen-immobilized bacteria, phosphate-dissolving bacteria and beneficial symbiotic bacteria.
As a preferable technical scheme of the application, the algae cultivated in the microalgae cultivation pond is one or more of chlorella, chlamydomonas, blue algae, scenedesmus and haematococcus.
As a preferable technical scheme of the application, the water inlet end of the balance water control tank is connected with the biological aeration tank through a connecting pipe, the water outlet end of the balance water control tank is connected with the microalgae culture pond through a connecting pipe, and the balance water control tank is provided with a water level sensor and a water level control system.
As a preferable technical scheme of the application, the microalgae culture pond comprises an environment detection module, an illumination module, a water circulation module and an air pump; the environment detection module is used for monitoring illumination, water temperature, PH value, plant growth promoting flora and nutrient solution concentration in the microalgae culture pond; the illumination module is used for illuminating the microalgae in the microalgae culture pond; the water circulation module is used for flowing the algae liquid in the microalgae culture pond, so that the microalgae at different positions can receive nutrition and illumination of the microalgae culture system in a balanced manner; the air pump is used for pumping carbon dioxide gas into the microalgae culture pond.
As a preferable technical scheme of the application, the water circulation module comprises a water inlet, a water outlet and a pipeline, wherein the water inlet and the water outlet are of a horn mouth structure, a rotary impeller is arranged in the middle of the pipeline and used for pushing algae liquid in the pipeline to flow, an inclined hole groove is arranged in the direction of the pipeline, which is close to the water inlet, the inclined hole groove is used for enabling external algae liquid to circularly move with the algae liquid in the pipeline, the water circulation module is vertically arranged in the microalgae culture pond, and the rotary impeller is used for driving the algae liquid on the upper layer and the lower layer in the culture pond to circularly exchange positions.
As a preferable technical scheme of the application, the illumination module is a suspension illumination system; the illumination module comprises an LED lamp, a light guide piece and a buoyancy component, wherein the light guide piece is in sealing connection with the LED lamp, and the buoyancy component enables the LED lamp to suspend in microalgae liquid.
As a preferable technical scheme, the microalgae collecting and filtering module adopts vacuum adsorption filtration and comprises a flow divider, a water purifying collecting box, a algae liquid filtering belt, a scraping module and an algae liquid separating box, wherein the flow divider is arranged above the feeding end of the algae liquid filtering belt, the water purifying collecting box is arranged below the algae liquid filtering belt, the scraping module is arranged at the discharging end of the algae liquid filtering belt, and the algae liquid separating box is arranged below the scraping module; the algae-liquid separation box comprises an algae filtering layer, a drain pipe and a vacuum pipe, wherein the algae filtering layer is arranged at the upper part of the algae-liquid separation box, the vacuum pipe is arranged on the side wall of the algae-liquid separation box, and the vacuum pipe is externally connected with a vacuum pumping machine.
As a preferable technical scheme of the application, the microalgae collecting and filtering module adopts gravity multilayer filtering and comprises a filtering cylinder, a flow dividing cavity, partition parts, a fixed seat and an alga body filtering layer, wherein the inside of the filtering cylinder is provided with a containing cavity, the top of the containing cavity is provided with the flow dividing cavity, the upper part of the flow dividing cavity is communicated with a water inlet, the lower part of the flow dividing cavity is provided with a flow dividing pipe, the middle part of the containing cavity is provided with the partition parts, the containing cavity is divided into a first filtering cavity and a second filtering cavity by the partition parts, two sides of the partition parts are provided with a plurality of fixed seats, the outer surface of the filtering cylinder is provided with a drawing part, the drawing part and the position of the fixed seat are correspondingly arranged, one end of the alga body filtering layer is in butt joint with the fixed seat, and the other end of the alga body filtering layer penetrates through the inner wall of the filtering cylinder body and is fixedly connected with the drawing part.
As a preferred technical scheme of the application, the ecological cycle system is further provided with a photovoltaic power generation system, the photovoltaic power generation system is used for supplying power to the ecological cycle system, the photovoltaic power generation system comprises a solar panel, an inverter, a direct current breaker box and an energy storage module, and the energy storage module comprises the solar panel arranged on the fish pond and an energy storage element electrically connected with the solar panel.
Compared with the prior art, the application has the following beneficial effects:
1. According to the application, the fishpond, the sedimentation tank, the biological aeration tank, the balance water control tank, the microalgae culture tank, the microalgae collecting and filtering module and the circulating water system are arranged to form a closed-loop microalgae culture ecological circulating system, so that the efficient recycling of water resources can be realized, microalgae in the fishpond can be circularly cultured and produced, the water quality is improved to a great extent, the fish fries in the fishpond can be efficiently cultured by utilizing the characteristics of the microalgae, and the reciprocal symbiosis between the fishpond culture and microalgae production can be realized.
2. The microalgae collecting and filtering module adopts vacuum adsorption filtration or gravity multilayer filtration, and when the vacuum adsorption filtration is adopted, microalgae and algae liquid are filtered and collected for multiple times through an algae liquid filtering belt and an algae liquid separating box; when gravity is adopted for multiple times of filtration, microalgae with different specifications are filtered and collected in a layered manner, so that the filtration efficiency of the microalgae is effectively improved.
3. The water inlet and the water outlet of the water circulation module are arranged in a horn shape, and are matched with the rotary impeller arranged in the middle of the pipeline to rotate, so that the algae liquid in the nearby range is absorbed into the pipeline by the large horn-shaped water inlet arranged above, after stirring in the pipeline, the algae liquid flows out along the small horn-shaped water outlet below, and as the small horn-shaped structure of the water outlet is arranged with the outer wall curvature being greater than the inner wall curvature, the algae liquid flowing out of the water outlet circularly flows upwards, and the algae liquid flowing upwards from the water outlet flows into the pipeline again along the inclined hole groove to form an algae liquid circulation flow area, thereby improving the water body mobility of microalgae cultivation water in the range of the water circulation module, improving the mixing degree of the algae liquid and promoting the growth and nutrient absorption of microalgae.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow diagram of a preferred embodiment of the present invention;
FIG. 2 is a flow chart of a second embodiment of the present invention;
FIG. 3 is a flow chart of a third embodiment of the present invention;
FIG. 4 is a flow chart of a fourth embodiment of the present invention;
FIG. 5 is a flow chart of a fifth embodiment of the present invention;
FIG. 6 is a schematic view of a partial structure of a microalgae culture pond according to the invention;
FIG. 7 is a schematic view of the internal structure of the water circulation module according to the present invention;
FIG. 8 is a schematic diagram of a microalgae collection and filtration module employing vacuum adsorption filtration in accordance with the present invention;
FIG. 9 is a schematic view showing the internal structure of the algae-laden liquid separation tank of the present invention;
FIG. 10 is a schematic diagram of a microalgae collection filtration module employing gravity multi-layer filtration according to the invention.
In the figure: 1. a fish pond; 2. a sedimentation tank; 21. a sewage outlet; 22. a UV lamp; 3. a biological aeration tank; 4. balance water control tank; 5. a microalgae culture pond; 51. an environmental monitoring module; 52. an illumination module; 53. a water circulation module; 531. rotating the impeller; 532. a large bell mouth; 533. a small horn mouth; 534. inclined hole grooves; 6. a microalgae collecting and filtering module; 601. a shunt; 602. a purified water collection tank; 603. an algae liquid filtering belt; 604. a scraping module; 605. an algae liquid separation box; 6051. a vacuum tube; 611. a filter cylinder; 612. a shunt cavity; 613. a partition portion; 614. a fixing seat; 615. a drawing part; 7. a circulating water system; 8. a solar panel; 9. a water purification collection device; 10. a fry pool; 11. fixing the height of the filtering cylinder.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described with reference to the accompanying drawings.
The terms first and second and the like in the description, the claims and the drawings of the present application are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprising," "including," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion. Such as a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to the list of steps or elements but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those skilled in the art will appreciate explicitly and implicitly that the described embodiments of the application may be combined with other embodiments.
As shown in fig. 1 to 10, the present invention provides an ecological cycle system for combined microalgae cultivation in a fish pond, the ecological cycle system comprising: the device comprises a fishpond 1, a sedimentation tank 2, a biological aeration tank 3, a balance water control tank 4, a microalgae culture pond 5, a microalgae collection and filtration module 6 and a circulating water system 7;
the fishpond 1 comprises a freshwater aquaculture pond or a mariculture pond;
The sedimentation tank 2 is used for receiving the tail water of the fishpond 1, carrying out sedimentation filtration on solid wastes in the tail water of the fishpond 1 and carrying out sterilization treatment on the tail water;
the biological aeration tank 3 is added with probiotics, and the probiotics are used for absorbing nutrient substances which cannot be treated by algae;
The balance water control tank 4 is used for balancing the water quantity and the concentration of microalgae nutrients;
The microalgae cultivation pond 5 is used for intelligently cultivating microalgae;
the microalgae collecting and filtering module 6 is used for receiving the microalgae culture liquid in the microalgae culture pond 5 and filtering and collecting microalgae in the microalgae culture liquid;
The circulating water system 7 is used for extracting tail water in the fishpond 1, filtering and performing innocent treatment, and then feeding the tail water into the microalgae culture pond 5 to provide nutrient solution for microalgae; the microalgae is collected through a microalgae collection and filtration module 6, and the filtered purified water containing a small amount of microalgae is circulated into the fishpond 1; or the algae-rich liquid in the microalgae culture pond 5 is sent to the fishpond 1 to provide foodstuff for fishes.
Further, a drain outlet 21 is arranged at the bottom of the sedimentation tank 2; the sedimentation tank 2 is provided with one or more UV lamps 22, and the sedimentation tank 2 serves as a primary separation facility, mainly for removing suspended solids and sediments existing in the water body introduced by the fishpond 1.
Further, the algae cultured in the microalgae culture pond 5 is one or more of chlorella, chlamydomonas, blue algae, scenedesmus and haematococcus.
Specifically, the mixed culture of algae can be roughly classified into the following conditions: cultivation environment conditions, the effect of removing certain nutrients and algae powder derived products; the cultivation environment condition means that some heat-resistant algae, such as chlorella, can be selected when the summer weather is hot. The cold-resistant algae are chlamydomonas; the effect of removing a nutrient is to select algae with a higher removal capacity for a nutrient. For example: the COD of the scenedesmus can be removed by 61.58 percent, and the TN of the chlorella can be removed by 96.6 percent; the chlorella oil derived from the algae powder is high, can be used as biodiesel, the spirulina contains high protein, can be used as feed or health care products, and the haematococcus pluvialis mainly produces natural astaxanthin.
Bacteria and algae have symbiotic effects, and bacteria can utilize organic substances to produce ammonia nitrogen, phosphate, and carbon dioxide, while algae can utilize these substances. Bacteria break down the organic matter into mineral matter, secreting extracellular metabolites such as auxin and vitamin B12, which are necessary for microalgae growth. But also can remove some organic pollutants which are difficult to degrade, such as crude oil and antibiotics; the chlorella can select bacillus licheniformis, so that the NH4 < + > and the total phosphorus removal rate are improved; the cell wall of cyanobacteria consists of polysaccharides and carbohydrates with negatively charged groups. Most metals and negative charges effectively remove heavy metals, specific bacterial colonies and algae are matched and symbiotic, and different algae species and matched bacterial colonies are selected under different conditions.
Further, the water inlet end of the balance water control tank 4 is connected with the biological aeration tank 3 through a connecting pipe, the water outlet end is connected with the microalgae culture pond 5 through a connecting pipe, and the balance water control tank 4 is provided with a water level sensor and a water level control system. Specifically, the balance water control tank 4 is connected with the biological aeration tank 3 and the microalgae cultivation tank 5, and is used for adjusting water flow to maintain constant water level and flow rate, providing a uniform and proper growth environment for microalgae, and the balance water control tank 4 serves as a buffer zone, reducing water flow fluctuation, helping to precipitate impurities, protecting the microalgae from severe environmental changes, ensuring effective operation of water treatment equipment, and improving the stability of the whole cultivation system and the production efficiency of the microalgae.
Further, as shown in fig. 6 and 7, the microalgae culture pond 5 receives the microalgae liquid processed by the biological aeration pond 3, and the microalgae culture pond 5 comprises an environment monitoring module 51, an illumination module 52, a water circulation module 53 and an air pump; the environment monitoring module 51 is used for monitoring illumination, water temperature, pH value, plant growth promoting flora and nutrient solution concentration in the microalgae culture pond 5; the illumination module 52 is used for illuminating the microalgae in the microalgae culture pond 5; the water circulation module 53 is configured to flow the algae liquid in the microalgae cultivation pond 5, so that the microalgae at different positions can receive nutrition and illumination in a balanced manner; the air pump is used for pumping carbon dioxide gas into the microalgae culture pond 5;
Further, the water circulation module 53 includes a water inlet, a water outlet and a pipe, the water inlet and the water outlet are in a bell mouth structure, a rotating impeller 531 is arranged in the middle of the pipe for pushing algae liquid in the pipe to flow, and the bell mouth structure is made by installing the rotating impeller 531 and then connecting the large bell mouth 532 and the small bell mouth 533 through threads; the water inlet and the water outlet of the water circulation module 53 are arranged to be horn-shaped, the water inlet is designed to be an upper big horn opening 532 in the vertical direction, the water outlet is designed to be a lower small horn opening 533, the small horn opening 533 is arranged with the outer wall curvature being larger than the inner wall curvature, so that algae liquid circulation at the water outlet has certain regular circulation characteristics, the water inlet of the upper big horn opening 532 absorbs algae liquid in a nearby range into a pipeline in cooperation with rotation of a rotating impeller 531 arranged in the middle of the pipeline, after stirring in the pipeline, the algae liquid flows out along the water outlet of the lower small horn opening 533 to the periphery, the algae liquid flowing out from the water outlet circulates upwards due to the large horn curvature of the water outlet and the upward opening, thereby improving the water body fluidity of microalgae cultivation water in the range of the water circulation module 53, carrying out regional layout on the microalgae cultivation pond 5 according to the cultivation scale of the microalgae cultivation pond 5, ensuring that the distribution of probiotic communities with different depths is more uniform, improving the mixing degree of the algae liquid, and promoting the growth and absorption of microalgae;
Further, a connection part is arranged on the outer convex surface of the bottom of the small horn 533 of the water circulation module 53, and the connection part is used for being connected with an air pump, so that the air pump can be fully contacted with algae liquid when pumping gas, and microalgae can be conveniently absorbed.
Further, an inclined hole slot 534 is arranged in the direction that the pipeline is close to the water inlet, the inclined hole slot 534 is used for circulating movement of external algae liquid and the algae liquid in the pipeline, the inclined hole slot 534 is arranged in the direction that the pipeline is close to the water inlet, the inclined hole slot 534 is composed of inclined through holes, the algae liquid flowing upwards from the water outlet flows into the pipe again along the through holes of the inclined hole slot 534, an algae liquid circulating flow area is formed, and meanwhile, the inclined hole slot 534 can be used for distributing the algae liquid, so that the flow of the liquid in the pipeline is more uniform.
Further, the illumination module 52 is a floating illumination system; the illumination module 52 comprises an LED lamp, a light guide member connected with the LED lamp in a sealing way and a buoyancy member for suspending the LED lamp in microalgae liquid, and the illumination system and the water circulation module 53 are arranged in the microalgae culture pond 5 in 1 or more; the illumination system is arranged in close proximity to the water circulation module 53 and is connected by a flexible traction member; the illumination system and the water circulation module 53 are electrically connected to an external power source. The light guide pieces are arranged on two sides of the light guide piece, light rays emitted by the LED lamps are uniformly radiated through the light guide piece and guided to the periphery of the water circulation module 53, and microalgae around the water circulation module 53 are illuminated; the buoyancy component is arranged, the LED light guide piece is suspended in water, the LED lamp irradiates to provide illumination energy, photosynthesis of microalgae is promoted, and growth rate and yield of the microalgae in the microalgae culture pond 5 are increased.
Further, the microalgae collecting and filtering module 6 is configured to receive the microalgae liquid processed by the microalgae culturing pond 5, the microalgae collecting and filtering module 6 has two collecting and filtering modes, according to fig. 8 and 9, one of the microalgae collecting and filtering modules 6 adopts vacuum adsorption filtration, and includes a diverter 601, a water purifying and collecting box 602, a microalgae liquid filtering belt 603, a scraping module 604 and a microalgae liquid separating box 605, the diverter 601 is disposed above the feeding end of the microalgae liquid filtering belt 603, the water purifying and collecting box 602 is disposed below the microalgae liquid filtering belt 603, the scraping module 604 is disposed at the discharging end of the microalgae liquid filtering belt 603, and the microalgae liquid separating box 605 is disposed below the scraping module 604; the algae-liquid separation tank 605 includes algae filter layer, drain pipe and vacuum tube 6051, the upper portion of algae-liquid separation tank 605 is provided with the algae filter layer, the lateral wall of algae-liquid separation tank 605 is provided with vacuum tube 6051, vacuum tube 6051 external connection has the vacuum pump.
Specifically, the filter screen provided on the algae liquid filtering belt 603 is in a sine wave shape, and includes a plurality of concave portions and convex portions formed on the surface thereof, the two side end portions of the filter screen incline towards the middle portion, the middle portion of the filter screen is provided with water storage tanks, the water storage tanks are arranged at intervals along the travelling direction of the conveyor belt, when the algae liquid is filtered, purified water flows downwards from the filtering holes of the filter screen into the purified water collecting box 602, and microalgae are filtered and accumulated on the concave portions between the two adjacent convex portions, as the two side end portions of the filter screen incline towards the middle portion, the algae liquid is gathered towards the water storage tanks which slowly towards the middle portion when being filtered, a certain amount of algae liquid is accumulated in the water storage tanks and then is conveyed to the adjacent filter screen downwards, and the water storage tanks are arranged at intervals along the travelling direction of the conveyor belt, so that the algae liquid is gradually transferred; through setting the filter screen to sine wave shape to set up to the middle part slope form, effectively slow down algae liquid flow rate, the cooperation the aqua storage tank that the aqua storage tank middle part set up carries out the secondary and slows down, reduces the quick problem that flows of unfiltered complete algae liquid on the conveyer belt, makes the algae liquid obtain fully filtering simultaneously, and the microalgae of filtering out is deposited in the concave part, along with the conveyer belt's tape carrier, when arriving the discharge end, scrape material module 604 and scrape the microalgae into algae liquid separation tank 605, discharge and carry out the secondary filtration to the unfiltered complete algae liquid that is deposited in the concave part microalgae on the conveyer belt through algae liquid separation tank 605.
Specifically, the algae-liquid separation tank 605 comprises an algae filtering layer, a drain pipe, a vacuum pipe 6051 and a water level detector, the upper part of the algae-liquid separation tank 605 is provided with an algae filtering layer, the algae filtering layer is provided with a plurality of layers, the side wall of the algae-liquid separation tank 605 is provided with the vacuum pipe 6051, the vacuum pipe 6051 is externally connected with a vacuum pumping machine, the water level detector is arranged below the vacuum pipe 6051, the bottom of the algae-liquid separation tank 605 is communicated with the drain pipe, the pipe orifice of the drain pipe is provided with a switch valve, the algae liquid which is not completely filtered on the algae-liquid filtering belt 603 is subjected to secondary filtration, specifically, the algae liquid which is not completely filtered passes through the plurality of layers of microalgae filtering layers, the microalgae with different sizes are filtered to the corresponding microalgae filter layer, the filtered clean water flows and gathers to the bottom of the microalgae liquid separation tank 605 rapidly by matching with the vacuum tube 6051 arranged on the side wall, when the water level detector detects that the accumulated water amount reaches the preset amount, the vacuum tube 6051 is closed, the water draining pipe orifice at the bottom is opened by controlling the switch valve to drain the clean water to the outside along the water draining pipe orifice, and when the water level detector detects that the clean water at the bottom of the microalgae liquid separation tank 605 is completely drained, the switch valve is controlled to be closed, the vacuum tube 6051 is opened again to suck vacuum, thereby repeatedly performing vacuum adsorption filtering operation on the microalgae liquid.
According to fig. 10, the microalgae collecting and filtering module 6 can also adopt gravity multi-layer filtration, which comprises a filtering cylinder 611, a diversion cavity 612, a partition 613, a fixed seat 614 and a alga filter layer, wherein the inside of the filtering cylinder 611 is provided with a containing cavity, the top of the containing cavity is provided with the diversion cavity 612, the upper part of the diversion cavity 612 is communicated with a water inlet, the lower part of the diversion cavity 612 is provided with a diversion pipe, the middle part of the containing cavity is provided with the partition 613, the partition 613 partitions the containing cavity into a first filtering cavity and a second filtering cavity, two sides of the partition 613 are provided with a plurality of fixed seats 614, the outer surface of the filtering cylinder 611 is provided with a drawing part 615, the drawing part 615 is correspondingly arranged with the position of the fixed seat 614, one end of the alga filter layer is abutted to the fixed seat 614, and the other end of the alga filter layer penetrates through the inner wall of the filtering cylinder 611 and is fixedly connected with the drawing part 615.
Specifically, a diversion cavity 612 is arranged to divert a large flow of microalgae liquid, a partition part 613 is arranged in a containing cavity in the filtering cylinder 611, and the microalgae liquid after diversion is respectively filtered; through setting up fixing base 614, pull portion 615 and multilayer algae body filter layer, filter the little algae liquid through the algae body filter layer upon layer, when the algae body piles up on the algae body filter layer, close the shunt tubes that this algae body filter layer corresponds, take out and change the algae body filter layer of this layer through pull portion 615, and opposite side filter chamber still can continue to work, effectively improves the filtration efficiency of little algae. The algae filter screens are arranged in four, and the algae filter screens with 300-350 meshes, 500-550 meshes, 600-650 meshes and 800-850 meshes are sequentially used for filtering along the vertical direction from top to bottom, so that microalgae with different specifications can be filtered in a layered manner, and meanwhile, the distribution arrangement that the pore diameters are sequentially reduced from top to bottom is adopted, so that the microalgae filtering effect is ensured.
Further, the ecological cycle system is further provided with a photovoltaic power generation system, the photovoltaic power generation system is used for supplying power to the ecological cycle system, the photovoltaic power generation system comprises a solar panel 8, an inverter, a direct current breaker box and an energy storage module, and the energy storage module comprises the solar panel 8 arranged on the pond 1 and an energy storage element electrically connected with the solar panel 8.
According to the preferred embodiment of the application, as shown in fig. 1, the fish pond combined microalgae cultivation ecological circulation system comprises a fish pond 1, a fish fry pond 10, a sedimentation tank 2, a biological aeration tank 3, a balance hole water tank, a microalgae cultivation pond 5, a microalgae collection filtration module 6, a circulating water system 7 and a photovoltaic power generation system, so as to form a closed loop circulation ecological system;
Specifically, the water in the fishpond 1 flows into the sedimentation tank 2 at first, the sedimentation tank 2 performs preliminary filtration, and solid wastes such as fish excreta, sand and stone in the water sink into the bottom and are discharged from the sewage outlet 21; after suspended solids in the water are reduced, the water flows into the biological aeration tank 3 to provide oxygen for microalgae, so that ammonia and nitrite in the water are decomposed by the microalgae, the ammonia and nitrite are converted into nitrate, the water quality is further purified, and the growth of the microalgae is promoted through a specific microorganism group; the water treated by the biological aeration tank 3 then flows into the balance water control tank 4, the continuity and stability of the tail water are maintained by adjusting the water flow and the water level, the water in the balance water tank flows into the microalgae culture tank 5, the microalgae grows by utilizing nutrient substances in the water, especially nitrate and phosphate, and oxygen is released through photosynthesis, the water quality is further improved, after the microalgae grows to a certain density, part of the water containing the microalgae is input into the fry pond 10, the fries in the fry pond 10 grow rapidly through proteins provided by the microalgae, the other part of the fry is subjected to vacuum adsorption separation through the microalgae collecting and filtering module 6, the pollution-free water and the microalgae are separated, the microalgae are filtered and collected, the pollution-free water is collected intensively by the water purifying and collecting equipment 9, and then discharged into the fish pond 1 again through the circulating water system 7, the treated water is rich in oxygen and the harmful substances are removed in a large amount and flow back to the fish pond 1 again, and the whole closed-loop ecological circulation system is completed for providing clean living environment for the fishes.
According to the second embodiment of the application, as shown in fig. 2, the fish pond combined microalgae cultivation ecological circulation system comprises a fish pond 1, a sedimentation tank 2, a biological aeration tank 3, a balance hole water tank, a microalgae cultivation tank 5, a microalgae collection and filtration module 6 and a photovoltaic power generation system, wherein the preferred embodiment is based on the preferred embodiment; specifically, the water in the fishpond 1 firstly flows into the sedimentation tank 2, after preliminary filtration is carried out in the sedimentation tank 2, the water flows into the biological aeration tank 3, the balance water control tank 4 and the microalgae culture tank 5 in sequence, after the microalgae further improves the water quality by utilizing the microalgae culture tank 5, the water is directly discharged into the fishpond 1 again through the circulating water system 7, and a clean living environment is provided for fishes, so that the whole closed-loop ecological circulation system is completed.
According to fig. 3, as a third embodiment of the present application, the combined microalgae cultivation ecological circulation system for a fish pond is mainly used for treating tail water of the fish pond 1, specifically, the combined microalgae cultivation ecological circulation system for a fish pond 1, a sedimentation tank 2, a biological aeration tank 3, a balance water control tank 4, a microalgae cultivation tank 5 and a microalgae collection and filtration module 6 are formed, wherein the microalgae collection and filtration module 6 adopts gravity multi-layer filtration, water in the fish pond 1 carries solid particles such as fish excreta and sand, and after flowing into the sedimentation tank 2, the solid particles in the tail water of the fish pond 1 are settled under the action of gravity and discharged along the sewage outlet 21, and a UV lamp 22 arranged in the sedimentation tank 2 is used for sterilizing and disinfecting the tail water, so that harmful microorganisms are reduced; introducing tail water treated by the sedimentation tank 2 into a biological aeration tank 3, wherein the biological aeration tank 3 is used for adding dissolved oxygen into the tail water to promote the propagation of beneficial microorganisms, the microorganisms help to decompose organic matters in the water, improve the water quality, promote the growth of microalgae by a specific microorganism group in the biological aeration tank 3, and absorb heavy metals and other pollutants in the water by the microalgae; the tail water treated by the biological aeration tank 3 then flows into the balance water control tank 4, the continuity and stability of the tail water are maintained by adjusting the water flow and the water level, and then the tail water enters the microalgae culture tank 5, wherein microalgae perform photosynthesis by using nutrient substances in the water, and simultaneously absorb nutrient salts such as nitrogen, phosphorus and the like in the water, so that the growth of the microalgae is promoted, and the absorption of pollutants by the microalgae is accelerated; finally, the tail water flows through the microalgae collecting and filtering module 6, microalgae are collected after being subjected to multi-layer filtration by the filtering cylinder 611, and the filtered water is discharged, so that the tail water treatment of the fishpond 1 is completed.
According to the fourth embodiment of the present application shown in fig. 4, according to the third embodiment of the present application, the tail water of the fishpond 1 is more effectively treated, that is, a solid high-speed filter with a cylinder shape is arranged between the sedimentation tank 2 and the biological aeration tank 3, and the solid high-speed filter 11 is a cylinder shape solid high-speed filter for removing suspended solids in the culture water body, including dead microalgae cells, feed residues, excrement and other organic or inorganic substances, so as to reduce the content of the suspended solids in the water body, thereby reducing the possible negative influence on the growth of microalgae and improving the quality of the culture water body.
According to fig. 5, as a fifth embodiment of the present application, the combined microalgae cultivation ecological circulation system for a fishpond is used for collecting microalgae, specifically, is composed of a fishpond 1, a sedimentation tank 2, a biological aeration tank 3, a balance water control tank 4, a microalgae cultivation tank 5 and a microalgae collection filtration module 6, wherein the microalgae collection filtration module 6 adopts vacuum adsorption filtration; after being preliminarily filtered by the sedimentation tank 2, the water in the fishpond 1 flows into the biological aeration tank 3, the balance water control tank 4 and the microalgae culture pond 5 in sequence, and is filtered and collected for a plurality of times by the microalgae liquid filtering belt 603 and the microalgae liquid separating tank 605 which are arranged by the microalgae collecting and filtering module 6.
The units described as separate parts may or may not be physically separate, and the parts displayed as units may be one physical unit or a plurality of physical units, may be located in one place, or may be distributed in a plurality of different places. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
Finally, it should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present application and not for limiting the same, and although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made to the technical solution of the present application without departing from the spirit and scope of the technical solution of the present application.
Claims (6)
1. The ecological circulation system comprises a fishpond (1), a sedimentation tank (2), a biological aeration tank (3), a balance water control tank (4), a microalgae culture pond (5), a microalgae collection and filtration module (6) and a circulating water system (7); the method is characterized in that:
The fishpond (1) comprises a freshwater aquaculture pond or a mariculture pond;
the sedimentation tank (2) is used for receiving tail water of the fishpond (1), carrying out sedimentation filtration on solid wastes in the tail water of the fishpond (1) and carrying out sterilization treatment on the tail water;
The biological aeration tank (3) is added with probiotics, and the probiotics are used for absorbing nutrient substances which cannot be treated by algae;
the balance water control tank (4) is used for balancing the water quantity and the concentration of microalgae nutrients;
the microalgae cultivation pond (5) is used for intelligently cultivating microalgae;
the microalgae collecting and filtering module (6) is used for receiving the microalgae culture liquid in the microalgae culture pond (5) and filtering and collecting microalgae in the microalgae culture liquid;
the circulating water system (7) is used for extracting tail water in the fishpond (1), filtering and performing innocent treatment, and then feeding the tail water into the microalgae culture pond (5) to provide nutrient solution for microalgae; the microalgae is collected through a microalgae collection and filtration module (6), and the filtered purified water containing a small amount of microalgae is circulated into the fishpond (1); or the algae-rich liquid in the microalgae culture pond (5) is sent to the fishpond (1) to provide foodstuff for fishes;
The microalgae culture pond (5) comprises an environment detection module (51), an illumination module (52), a water circulation module (53) and an air pump; the environment detection module (51) is used for monitoring illumination, water temperature, PH value, plant growth promoting flora and nutrient solution concentration in the microalgae culture pond (5); the illumination module (52) is used for illuminating microalgae in the microalgae culture pond (5); the water circulation module (53) is used for flowing the algae liquid in the microalgae culture pond (5) so that the microalgae at different positions can receive nutrition and illumination in a balanced manner; the air pump is used for pumping carbon dioxide gas into the microalgae culture pond (5);
The water circulation module (53) comprises a water inlet, a water outlet and a pipeline, wherein the water inlet and the water outlet are of a horn mouth structure, a rotary impeller (531) is arranged in the middle of the pipeline and used for pushing algae liquid in the pipeline to flow, an inclined hole groove (534) is arranged in the direction of the pipeline, which is close to the water inlet, the inclined hole groove (534) is used for enabling external algae liquid to circularly move with the algae liquid in the pipeline, the water circulation module (53) is vertically arranged in the microalgae culture pond (5), and the rotary impeller (531) drives the algae liquid at the upper layer and the lower layer in the culture pond to circularly exchange positions;
the microalgae collection and filtration module (6) adopts vacuum adsorption filtration and comprises a diverter (601), a water purification collection box (602), a algae liquid filtration belt (603), a scraping module (604) and an algae liquid separation box (605), wherein the diverter (601) is arranged above the feeding end of the algae liquid filtration belt (603), the water purification collection box (602) is arranged below the algae liquid filtration belt (603), the scraping module (604) is arranged at the discharging end of the algae liquid filtration belt (603), and the algae liquid separation box (605) is arranged below the scraping module (604); the algae-liquid separation box (605) comprises an algae filtering layer, a drain pipe and a vacuum pipe, wherein the algae filtering layer is arranged at the upper part of the algae-liquid separation box (605), the vacuum pipe (6051) is arranged on the side wall of the algae-liquid separation box (605), and the vacuum pipe (6051) is externally connected with a vacuum pumping machine;
the filter screen arranged on the algae liquid filter belt (603) is in a sine wave shape and comprises a plurality of concave parts and convex parts formed on the surface of the filter screen, the end parts of the two sides of the filter screen incline towards the middle part, water storage tanks are arranged in the middle of the filter screen and are arranged at intervals along the tape running direction of the conveyor belt.
2. The ecological cycle system for combined microalgae cultivation in a fish pond according to claim 1, wherein a drain outlet (21) is arranged at the bottom of the sedimentation tank (2); one or more UV lamps (22) are arranged in the sedimentation tank (2).
3. The ecological cycle system for combined microalgae cultivation in a fish pond according to claim 1, wherein the algae cultivated in the microalgae cultivation pond (5) is one or more of chlorella, chlamydomonas, blue algae, scenedesmus and haematococcus.
4. The ecological cycle system for combined microalgae cultivation in a fish pond according to claim 1, wherein a water inlet end of the balance water control tank (4) is connected with the biological aeration tank (3) through a connecting pipe, a water outlet end of the balance water control tank is connected with the microalgae cultivation pond (5) through a connecting pipe, and the balance water control tank (4) is provided with a water level sensor and a water level control system.
5. The pond in combination with microalgae cultivation ecological cycle system of claim 1, characterized in that the illumination module (52) is a suspension illumination system; the illumination module (52) comprises an LED lamp, a light guide piece connected with the LED lamp in a sealing mode and a buoyancy component for enabling the LED lamp to be suspended in microalgae liquid.
6. The fish pond combined microalgae cultivation ecological cycle system as claimed in claim 1, wherein the ecological cycle system is further provided with a photovoltaic power generation system, the photovoltaic power generation system is used for supplying power to the ecological cycle system, the photovoltaic power generation system comprises a solar panel (8), an inverter, a direct current breaker box and an energy storage module, and the energy storage module comprises the solar panel (8) arranged on the fish pond (1) and an energy storage element electrically connected with the solar panel (8).
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| CN1718722A (en) * | 2004-07-07 | 2006-01-11 | 郭劲 | Method of outdoor industrial production of algae and its device |
| CN203878147U (en) * | 2013-12-11 | 2014-10-15 | 大丰市佳丰油脂有限责任公司 | Microalgae integration device |
| CN105794706A (en) * | 2014-12-31 | 2016-07-27 | 付顺林 | Ecological-type closed-water-recycling aquaculture system |
| CN207567220U (en) * | 2017-11-29 | 2018-07-03 | 河西学院 | A kind of recovering device of split type both culturing microalgae bioreactor |
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| AT503083B1 (en) * | 2006-01-05 | 2014-06-15 | Wolfgang Dipl Ing Mag Wesner | PROCESS FOR THE PREPARATION OF SALT WATER AND APPARATUS FOR IMPLEMENTING THE PROCESS |
| CN101294132B (en) * | 2008-06-19 | 2011-04-13 | 蔡志武 | Gas push type photobioreactor |
| CN112239717B (en) * | 2019-07-19 | 2022-08-26 | 国投生物科技投资有限公司 | Microalgae harvesting device and microalgae harvesting method |
| CN212141614U (en) * | 2020-03-17 | 2020-12-15 | 南京卓蓝生物有限公司 | Algae cultivation sewage collection and treatment device |
| CN116076425A (en) * | 2023-02-08 | 2023-05-09 | 广东海洋大学 | Fully-closed circulating water intensive culture system for prawns and culture method thereof |
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| CN1718722A (en) * | 2004-07-07 | 2006-01-11 | 郭劲 | Method of outdoor industrial production of algae and its device |
| CN203878147U (en) * | 2013-12-11 | 2014-10-15 | 大丰市佳丰油脂有限责任公司 | Microalgae integration device |
| CN105794706A (en) * | 2014-12-31 | 2016-07-27 | 付顺林 | Ecological-type closed-water-recycling aquaculture system |
| CN207567220U (en) * | 2017-11-29 | 2018-07-03 | 河西学院 | A kind of recovering device of split type both culturing microalgae bioreactor |
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