Aquaculture wastewater treatment device based on magnetic charcoal-based immobilized microbial agent

Abstract

The utility model discloses a culture wastewater treatment device based on magnetic biochar-based immobilized inoculant, which comprises a flocculent precipitation tank, a biological reaction tank and an ultraviolet sterilization component which are communicated in sequence, a flocculant feeding port is arranged on the flocculent precipitation tank, and a magnetic biochar-based immobilized inoculant feeding port is arranged on the biological reaction tank. By designing the device integrating three-stage treatment of precipitation and flocculation, biological immobilized microbial inoculum treatment and ultraviolet sterilization, pollutants such as heavy metals, ammonia nitrogen and antibiotics contained in the breeding wastewater can be effectively removed after the breeding wastewater is subjected to flocculation and precipitation, biochar adsorption, degradation bacterium biochemical reaction and ultraviolet sterilization and disinfection; the rotating speed of a rotating driving motor can be adjusted in the flocculation and precipitation stage, the time length and effect of flocculation and precipitation are reasonably controlled, and solid-liquid separation is effectively achieved; the magnetic biochar-based immobilized fungicide added in the biological fungicide treatment stage can be separated from the wastewater through an electromagnetic adsorption part, and the fungicide can be recycled for multiple times.

Description

Technical Field

[0001] The utility model relates to a device for treating and recycling wastewater, in particular to a device for treating aquaculture wastewater based on a magnetic biochar-based immobilized bacterial agent. Background Art

[0002] The current aquaculture wastewater treatment mainly considers the control of conventional pollution indicators such as chemical oxygen demand, biochemical oxygen demand, ammonia nitrogen and total phosphorus, but pays less attention to the removal of other pollutants such as antibiotics and heavy metals in the wastewater.

[0003] Magnetic biochar-based immobilized bacterial agent is a composite material obtained by mixing rice straw with iron salt solution as biomass material and using magnetic biochar as carrier to load antibiotic efficient degradation bacteria screened from aquaculture wastewater onto the surface and inside of biochar. Biochar has the characteristics of complex pore structure, large specific surface area, stable physical and chemical properties, and strong adsorption capacity. It can adsorb nitrogen, phosphorus and heavy metal elements in aquaculture wastewater. In addition, biochar raw materials are widely available and can be made from agricultural solid waste, which is economical and practical. Loading antibiotic degradation bacteria on biochar can protect the degradation bacteria, reduce the damage caused by heavy metal stress and competition from indigenous microorganisms in the complex pollution system, and achieve heavy metal removal and antibiotic degradation at the same time by giving full play to the advantages of biochar and degradation bacteria.

[0004] However, the existing aquaculture wastewater treatment equipment has the following disadvantages:

[0005] (1) Small-scale aquaculture wastewater treatment equipment is simple and has a single structure. It is only equipped with simple sedimentation and biological fermentation devices. The solid-liquid separation is not thorough, the pollutant treatment effect is poor, and there is no control for heavy metal and antibiotic pollution, which cannot achieve effective purification and recycling of aquaculture wastewater.

[0006] (2) There is no magnetic separation device specifically designed for magnetic agents, making it difficult to separate and recycle magnetic agents from wastewater.

[0007] (3) The existing equipment fails to realize the integrated process processing of the device, and the operation is cumbersome, time-consuming and labor-intensive. Utility Model Content

[0008] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an aquaculture wastewater treatment device based on a magnetic biochar-based immobilized bacterial agent, which can effectively remove pollutants such as heavy metals, ammonia nitrogen, and antibiotics contained in wastewater and can be recycled after wastewater treatment.

[0009] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0010] A breeding wastewater treatment device based on magnetic biochar-based immobilized bacteria agent comprises a flocculation sedimentation box, a biological reaction box and an ultraviolet sterilization component which are connected in sequence. The flocculation sedimentation box is provided with a flocculant delivery port, and the biological reaction box is provided with a magnetic biochar-based immobilized bacteria agent delivery port.

[0011] As a further improvement of the above technical solution: the flocculation sedimentation box is provided with a rotary drive motor, the flocculation sedimentation box is provided with a stirring blade, and the rotary drive motor is connected to the stirring blade through a main shaft.

[0012] As a further improvement of the above technical solution: the rotation speed of the rotary drive motor is adjustable.

[0013] As a further improvement of the above technical solution: an electromagnetic adsorption component for adsorbing the magnetic biochar-based immobilized bacterial agent is provided in the bioreactor.

[0014] As a further improvement of the above technical solution: the aquaculture wastewater treatment device based on magnetic biochar-based immobilized bacteria agent also includes a fan, a main aeration pipe and an aeration pipe rack arranged in the bioreactor, and the fan is connected to the aeration pipe rack through the main aeration pipe.

[0015] As a further improvement of the above technical solution: the electromagnetic adsorption component is arranged on the aeration tube rack.

[0016] As a further improvement of the above technical solution: a water level sensor and a water level indicator are provided on the bioreactor, and the water level sensor is connected to the water level indicator.

[0017] As a further improvement of the above technical solution: the biological reaction box is connected to the ultraviolet sterilization component through a water outlet pipe 1, and the water outlet pipe 1 is a siphon water outlet pipe.

[0018] As a further improvement of the above technical solution: the ultraviolet sterilization component is connected to a second water outlet pipe, and a flow regulating valve is provided on the second water outlet pipe.

[0019] As a further improvement of the above technical solution: the flocculation sedimentation tank is provided with a water inlet pipe 1, the water inlet pipe 1 is provided with a water pump 1, the flocculation sedimentation tank is connected with the biological reaction tank through a water inlet pipe 2, the water inlet pipe 2 is provided with a water pump 2.

[0020] Compared with the prior art, the advantages of the utility model are:

[0021] (1) The aquaculture wastewater treatment device based on magnetic biochar-based immobilized bacteria disclosed in the utility model is designed to integrate three-stage treatment of sedimentation and flocculation, biological immobilized bacteria treatment, and ultraviolet sterilization. After the aquaculture wastewater is subjected to flocculation and sedimentation, biochar adsorption, biochemical reaction of degradation bacteria, and ultraviolet sterilization and disinfection, the pollutants such as heavy metals, ammonia nitrogen, and antibiotics contained in the wastewater can be effectively removed, and the effluent from the device can be recycled, such as for cleaning pig houses or irrigating farmland.

[0022] (2) The aquaculture wastewater treatment device based on magnetic biochar-based immobilized bacterial agent disclosed in the utility model can adjust the speed of the rotary drive motor in the flocculation and sedimentation stage, reasonably control the duration and effect of flocculation and sedimentation, effectively realize solid-liquid separation, and facilitate the next stage of biological treatment.

[0023] (3) The aquaculture wastewater treatment device based on magnetic biochar-based immobilized bacteria agent disclosed by the utility model can separate the magnetic biochar-based immobilized bacteria agent from the wastewater through an electromagnetic adsorption component during the biological bacteria agent treatment stage. The bacteria agent can be recycled multiple times, which is economical, practical and easy to operate.

[0024] (4) The aquaculture wastewater treatment device based on magnetic biochar-based immobilized bacterial agent disclosed by the utility model is provided with a water level sensor and a water level indicator on the biological reaction box, which can realize active control of the water level. The outlet pipe 1 utilizes the siphon principle to facilitate the discharge of wastewater. The outlet pipe 2 is provided with a flow regulating valve to control the wastewater discharge flow rate, thereby facilitating the resource utilization of wastewater. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the utility model.

[0026] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0027] Figure 3 It is a structural schematic diagram of the stirring blade in the utility model.

[0028] Figure 4 It is a structural schematic diagram of the aeration pipe rack in the utility model.

[0029] The symbols in the figure represent:

[0030] 1. Flocculation sedimentation tank; 2. Biological reaction tank; 3. Ultraviolet sterilization component; 4. Water inlet pipe 1; 5. Water pump 1; 6. Water inlet pipe 2; 7. Water pump 2; 8. Water outlet pipe 1; 9. Water outlet pipe 2; 10. Flocculant delivery port; 11. Magnetic biochar-based immobilized bacterial agent delivery port; 12. Rotary drive motor; 13. Main shaft; 14. Stirring blades; 15. Water level indicator; 16. Water level sensor; 17. Aeration pipe rack; 18. Electromagnetic adsorption component; 19. Main aeration pipe; 20. Fan; 21. Flow control valve. DETAILED DESCRIPTION

[0031] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "assemble", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0035] Figures 1 to 4An embodiment of the aquaculture wastewater treatment device based on magnetic biochar-based immobilized bacteria agent of the utility model is shown. The aquaculture wastewater treatment device based on magnetic biochar-based immobilized bacteria agent of the utility model comprises a flocculation sedimentation tank 1, a bioreactor tank 2 and an ultraviolet sterilization component 3 which are connected in sequence. The flocculation sedimentation tank 1 is provided with a flocculant delivery port 10, and the bioreactor tank 2 is provided with a magnetic biochar-based immobilized bacteria agent delivery port 11. Preferably, the flocculation sedimentation tank 1 and the bioreactor tank 2 adopt a cylindrical barrel structure, and the flocculant delivery port 10 and the magnetic biochar-based immobilized bacteria agent delivery port 11 are arranged at the top of the barrel; the flocculant delivery port 10 and the magnetic biochar-based immobilized bacteria agent delivery port 11 adopt a funnel structure, which is convenient for delivering flocculants and bacteria agents.

[0036] Furthermore, in this embodiment, a rotary drive motor 12 is provided on the flocculation sedimentation tank 1, and a stirring blade 14 is provided in the flocculation sedimentation tank 1. The rotary drive motor 12 is connected to the stirring blade 14 through a main shaft 13. Preferably, the speed of the rotary drive motor 12 is adjustable. After the flocculant is added, the rotary drive motor 12 is energized to drive the main shaft 13 and the stirring blade 14 to rotate for stirring. The speed of the rotary drive motor 12 is regulated to reasonably control the duration and effect of flocculation and sedimentation, effectively realize solid-liquid separation, and facilitate the next stage of biological treatment.

[0037] Furthermore, in this embodiment, an electromagnetic adsorption component 18 for adsorbing the magnetic biochar-based immobilized bacterial agent is provided in the bioreactor 2. The magnetic biochar-based immobilized bacterial agent added in the biological bacterial agent treatment stage can be separated from the wastewater by the electromagnetic adsorption component 18, and the bacterial agent can be recycled for multiple times, which is economical, practical and easy to operate.

[0038] Furthermore, in this embodiment, the aquaculture wastewater treatment device based on magnetic biochar-based immobilized bacterial agent also includes a fan 20, a main aeration pipe 19 and an aeration pipe rack 17 arranged in the bioreactor 2. The fan 20 is connected to the aeration pipe rack 17 through the main aeration pipe 19. Preferably, there are multiple microporous aeration pipes at the bottom of the aeration pipe rack 17 to ensure sufficient aeration; the electromagnetic adsorption component 18 can be installed on the aeration pipe rack 17.

[0039] Furthermore, in this embodiment, a water level sensor 16 and a water level indicator 15 are provided on the bioreactor 2, and the water level sensor 16 is connected to the water level indicator 15. The water level sensor 16 and the water level indicator 15 cooperate to indicate the water level in the bioreactor 2, so as to realize intelligent and automatic control of water in and out of the device.

[0040] Furthermore, in this embodiment, the bioreactor box 2 is connected to the ultraviolet sterilization component 3 through a water outlet pipe 8, and the water outlet pipe 8 is a siphon water outlet pipe with a simple structure and convenient and fast water outlet.

[0041] Furthermore, in this embodiment, the ultraviolet sterilization component 3 is connected to a water outlet pipe 2 9, and a flow regulating valve 21 is provided on the water outlet pipe 2 9. The flow regulating valve 21 can be used to control the flow rate of wastewater discharge, which is convenient for resource utilization of wastewater.

[0042] In this embodiment, the flocculation sedimentation tank 1 is provided with a water inlet pipe 4 , on which a water pump 5 is provided. The flocculation sedimentation tank 1 is connected to the biological reaction tank 2 through a water inlet pipe 6 , on which a water pump 7 is provided.

[0043] The working principle of the utility model is as follows:

[0044] The wastewater enters the flocculation sedimentation tank 1 through the water inlet pipe 4 driven by the water pump 5, and a proper amount of flocculant is added at the flocculant delivery port 10, and the rotary drive motor 12 is turned on to drive the main shaft 13 and the stirring blade 14 to stir and accelerate the flocculation sedimentation process. During the process, the actual power of the rotary drive motor 12 can be adjusted according to the actual flocculation effect. After the flocculation sedimentation is completed, the wastewater enters the bioreactor 2 through the water inlet pipe 6 driven by the water pump 27, and the water level sensor 16 detects the change of the water level height, and the water level indicator 15 displays the liquid level height. After reaching a certain height, the water pump 27 stops working, and at this time, the magnetic biochar-based immobilized bacteria agent is added at the magnetic biochar-based immobilized bacteria agent delivery port 11. The blower 20 is started, and oxygen is added to the bioreactor 2 through the main aeration pipe 19 and the aeration pipe rack 17 to meet the aerobic reaction requirements of the degradation bacteria. After a period of reaction, the electromagnetic adsorption component 18 is energized to adsorb the magnetic biochar-based immobilized bacterial agent. By using the siphon principle, the wastewater enters the ultraviolet sterilization component 3 through the outlet pipe 1 8, and after ultraviolet sterilization and disinfection, it enters the outlet pipe 2 9. The flow regulating valve 21 in the outlet pipe 2 9 is adjusted to control the wastewater discharge flow rate. After the wastewater is discharged, the electromagnetic adsorption component 18 is powered off, and the magnetic biochar-based immobilized magnetic bacterial agent remains in the bioreactor 2, which is convenient for the next recycling. The discharged wastewater can be recycled, such as flushing pig houses or irrigating farmland.

[0045] Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with the art can use the above disclosed technical content to make many possible changes and modifications to the technical solution of the present invention without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A breeding wastewater treatment device based on magnetic biochar-based immobilized bacterial agent, characterized in that: The invention comprises a flocculation sedimentation box (1), a bioreactor box (2) and an ultraviolet sterilization component (3) which are connected in sequence. The flocculation sedimentation box (1) is provided with a flocculant introduction port (10), and the bioreactor box (2) is provided with a magnetic biochar-based immobilized bacterial agent introduction port (11).

2. The aquaculture wastewater treatment device based on magnetic biochar-based immobilized bacterial agent according to claim 1 is characterized in that: The flocculation sedimentation box (1) is provided with a rotary drive motor (12), and a stirring blade (14) is provided inside the flocculation sedimentation box (1). The rotary drive motor (12) is connected to the stirring blade (14) via a main shaft (13).

3. The aquaculture wastewater treatment device based on magnetic biochar-based immobilized bacterial agent according to claim 2 is characterized in that: The rotation speed of the rotary drive motor (12) is adjustable.

4. The aquaculture wastewater treatment device based on magnetic biochar-based immobilized bacterial agent according to claim 1 is characterized in that: An electromagnetic adsorption component (18) for adsorbing the magnetic biochar-based immobilized bacterial agent is provided in the bioreactor (2).

5. The aquaculture wastewater treatment device based on magnetic biochar-based immobilized bacterial agent according to claim 4 is characterized in that: It also comprises a fan (20), a main aeration pipe (19) and an aeration pipe rack (17) arranged in the biological reaction box (2); the fan (20) is connected to the aeration pipe rack (17) via the main aeration pipe (19).

6. The aquaculture wastewater treatment device based on magnetic biochar-based immobilized bacterial agent according to claim 5 is characterized in that: The electromagnetic adsorption component (18) is arranged on the aeration pipe frame (17).

7. The aquaculture wastewater treatment device based on magnetic biochar-based immobilized bacterial agent according to claim 1 is characterized in that: The bioreactor box (2) is provided with a water level sensor (16) and a water level indicator (15), and the water level sensor (16) is connected to the water level indicator (15).

8. The aquaculture wastewater treatment device based on magnetic biochar-based immobilized bacterial agent according to any one of claims 1 to 7, characterized in that: The biological reaction box (2) is connected to the ultraviolet sterilization component (3) through a water outlet pipe (8), and the water outlet pipe (8) is a siphon water outlet pipe.

9. The aquaculture wastewater treatment device based on magnetic biochar-based immobilized bacterial agent according to any one of claims 1 to 7, characterized in that: The ultraviolet sterilization component (3) is connected to a second water outlet pipe (9), and a flow regulating valve (21) is provided on the second water outlet pipe (9).

10. The aquaculture wastewater treatment device based on magnetic biochar-based immobilized bacterial agent according to any one of claims 1 to 7, characterized in that: The flocculation sedimentation tank (1) is provided with a water inlet pipe (4), and a water pump (5) is provided on the water inlet pipe (4). The flocculation sedimentation tank (1) is connected to the biological reaction tank (2) through a water inlet pipe (6), and a water pump (7) is provided on the water inlet pipe (6).

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