Floating algae culture device

Abstract

The utility model discloses a floating algae culture device, which belongs to the technical field of microalgae biology and comprises a floating component floating on a water body, a microalgae fixing part used for fixing microalgae is arranged in the floating component, a feed port is arranged on one side of the floating component and connected with a feed pump through a feed pipe, and a discharge port is arranged on the other side of the floating component and connected with the feed pump through a discharge pipe. The discharging port is connected with a discharging pipe, and a transparent protective film is arranged above the floating assembly. The floating assembly is placed in a water body, microalgae are attached to the microalgae fixing piece before production, then the feeding pump is started, waste water rich in nitrogen and phosphorus enters the floating assembly sequentially through the feeding pump, the feeding pipe and the feeding port, and the waste water is discharged back to the water body again through the discharging port and the discharging pipe after passing through the microalgae fixing piece attached with the microalgae. Nitrogen and phosphorus in the wastewater are absorbed by the microalgae, so that the production requirements of the microalgae can be met, and the wastewater can be treated; the device has the advantages that the occupied area is not wasted, the equipment investment is reduced and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of microalgae biotechnology, and in particular relates to a floating algae cultivation device. Background Art

[0002] Microalgae can efficiently utilize light energy, carbon dioxide and water for photosynthesis, produce oxygen and synthesize a variety of biologically active substances (such as polysaccharides, proteins, oils, unsaturated fatty acids, natural pigments, vitamins and minerals, etc.), and have the advantages of fast growth rate, short cultivation cycle, sustainable regeneration, and no occupation of arable land. They are considered to be an important source of raw materials for new biomass energy and can be widely used in food feed, medical care, cosmetics, aquatic animals and poultry and livestock farming, etc., and have very broad application prospects.

[0003] Photobioreactors are the core of the entire microalgae industry chain. At present, large-scale cultivation of microalgae for commercial applications is mostly carried out in open culture systems and closed photobioreactors indoors and outdoors. Open pools have the advantages of being more economical, easier to establish and operate, and have become the most commonly used culture system in large-scale cultivation of microalgae. However, this open culture system is greatly affected by the environment and is easily contaminated. In addition, the culture conditions are uncontrollable, the water evaporation is large, and the effective light utilization rate is low. Relatively speaking, closed photobioreactors are highly controllable for various culture parameters, making microalgae culture less likely to be contaminated, with high light energy utilization efficiency and high biomass concentration, but the main body cost is expensive, and the operation and maintenance costs are high. At present, microalgae photobioreactors are all land-based, and large-scale industrialized microalgae cultivation photobioreactors suitable for marine environments have not yet been developed. For land-based photobioreactors, there are mainly the following technical problems: ① The open runway pool occupies a large area, has a low culture density, high energy consumption for culture fluid circulation, and is easily contaminated by the outside world. ② The cost of closed light-transmitting containers is high, especially glass containers. Due to the particularity and limitations of glass processing technology, they cannot be formed in one go, and the manufacturing cost, installation and maintenance cost are very high. There are also problems such as low cell culture density, insufficient space utilization and high energy consumption. ③ Solid-state culture photobioreactors are highly dependent on the material itself and have low light utilization efficiency. Moreover, their applicability is also relatively limited, and their liquid supply device is also an energy-consuming device, which cannot further reduce the culture cost. At present, these mainstream microalgae culture systems are mainly operated on land, occupying a large amount of land area. At the same time, equipment depreciation and energy consumption increase the cost of microalgae culture, which seriously restricts the rapid development of microalgae industrialization.

[0004] Although my country has a vast sea area and abundant marine resources, due to the limitation of land and coastal aquaculture area, the aquaculture of biomass energy and aquatic organisms is also expanding to the ocean. Therefore, the development of a low-cost, high-efficiency, multi-purpose new marine photobioreactor has important practical significance and great application prospects.

[0005] At present, the microalgae cultivation devices used in outdoor open waters mainly include floating breeding rafts and water-enclosed microalgae cultivation devices, as well as a semi-submersible cage LED submerged light cultivation device. In addition, the transparent film bags floating on the water are easily broken by the impact of wind and waves. These devices have simple structures, small cultivation volumes, insufficient or no light at the bottom of the water, low light energy utilization, and structures that are easily destroyed by fish schools. The microalgae in cultivation are easily preyed on by zooplankton and some fish; and they are difficult to manage and maintain. Up to now, there is still a lack of photobioreactors that can be stably used for large-scale cultivation of microalgae in open waters, especially in the ocean. Utility Model Content

[0006] The utility model aims to solve the problems of the prior art and provides a floating algae cultivation device. A floating component is placed in a water body. Before production, microalgae are first attached to a microalgae fixing part, and then a feed pump is started. Wastewater rich in nitrogen and phosphorus enters the interior of the floating component through the feed pump, the feed pipe and the feed port in sequence. The wastewater passes through the microalgae fixing part to which the microalgae are attached and is finally discharged back into the water body from the discharge port and the discharge pipe. Nitrogen and phosphorus in the wastewater are absorbed by the microalgae, which can meet the production needs of microalgae and treat wastewater. The microalgae fixing part is arranged to prevent the microalgae from falling off the microalgae fixing part, and compared with conventional microalgae cultivation devices, no additional microalgae separation device is required. The utility model has the advantages of not wasting space and reducing equipment investment.

[0007] The utility model is realized by the following technical solutions:

[0008] A floating algae cultivation device comprises a floating component floating on a water body, wherein a microalgae fixing member for fixing microalgae is arranged inside the floating component, a feed port is arranged on one side of the floating component, the feed port is connected to a feed pump through a feed pipe, a discharge port is arranged on the other side of the floating component, the discharge port is connected to the discharge pipe, and a transparent protective film is arranged above the floating component.

[0009] Preferably, the floating assembly comprises a rectangular box with an open upper end, and a plurality of floating members are evenly arranged below the rectangular box. The floating members are buoys made of high molecular polyethylene (HDPE) through a blow molding process.

[0010] Preferably, the microalgae fixing member is fixedly arranged at the lower end of the inner wall of the rectangular box.

[0011] Preferably, the length of the microalgae fixing member is smaller than the length of the rectangular box.

[0012] Preferably, the microalgae fixing component adopts a filter paper layer, a filter cloth layer, a sponge layer, a plastic foam layer, a fiber fabric layer or a porous carrier layer.

[0013] Preferably, a discharge valve is provided on the discharge pipe.

[0014] Preferably, the feed pump is arranged in the water body.

[0015] Preferably, the feed pump is arranged in the floating assembly.

[0016] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0017] 1. The utility model provides a floating algae cultivation device, in which a floating component is placed in a water body, microalgae are first attached to a microalgae fixing part before production, and then a feed pump is started, and wastewater rich in nitrogen and phosphorus enters the interior of the floating component through the feed pump, the feed pipe and the feed port in sequence, and the wastewater is finally discharged back into the water body from the discharge port and the discharge pipe through the microalgae fixing part attached with the microalgae, and the nitrogen and phosphorus in the wastewater are absorbed by the microalgae, which can not only meet the production needs of microalgae, but also treat the wastewater; the provision of the microalgae fixing part prevents the microalgae from falling off the microalgae fixing part, and compared with conventional microalgae cultivation devices, no additional microalgae separation device is required; the utility model has the advantages of not wasting space and reducing equipment investment.

[0018] 2. The utility model provides a floating algae cultivation device, in which evenly distributed floating parts ensure the stability of the floating assembly, so that the floating assembly floats normally above the water body.

[0019] 3. The utility model provides a floating algae cultivation device, in which a buffer area is provided between the feed port, the discharge port and the microalgae fixing member, so as to effectively prevent wastewater from scouring the microalgae fixing member and reduce the possibility of microalgae falling off the microalgae fixing member.

[0020] 4. The utility model provides a floating algae cultivation device, which can open the discharge valve and start the feed pump according to actual needs to ensure the effect of wastewater treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 It is a structural schematic diagram of the floating assembly in the utility model;

[0023] Wherein: 100, floating component; 101, rectangular box; 102, floating part; 103, feed port; 104, discharge port; 200, microalgae fixing part; 300, feed pipe; 400, feed pump; 500, discharge pipe; 600, discharge valve; 700, transparent protective film. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the embodiments, but the implementation manner of the present invention is not limited thereto.

[0025] Example 1

[0026] like Figure 1 As shown, the present embodiment provides a floating algae cultivation device, including a floating component 100 floating on a water body, wherein a microalgae fixing member 200 for fixing microalgae is arranged in the floating component 100, a feed port 103 is arranged on one side of the floating component 100, and the feed port 103 is connected to a feed pump 400 through a feed pipe 300, and a discharge port 104 is arranged on the other side of the floating component 100, and the discharge port 104 is connected to a discharge pipe 500, and a transparent protective film 700 is arranged above the floating component 100.

[0027] The floating component 100 is placed in a water body, and the microalgae are first attached to the microalgae fixing part 200 before production, and then the feed pump 400 is started, and the wastewater rich in nitrogen and phosphorus enters the interior of the floating component 100 through the feed pump 400, the feed pipe 300 and the feed port 103 in sequence, and the wastewater is finally discharged back into the water body from the discharge port 104 and the discharge pipe 500 through the microalgae fixing part 200 attached with the microalgae, and the nitrogen and phosphorus in the wastewater are absorbed by the microalgae, which can not only meet the production needs of microalgae, but also treat the wastewater; the setting of the microalgae fixing part 200 prevents the microalgae from falling off the microalgae fixing part 200, and compared with the conventional microalgae cultivation device, no additional microalgae separation device is required; the utility model has the advantages of not wasting space and reducing equipment investment.

[0028] Example 2

[0029] like Figure 2 As shown, the difference between this embodiment and embodiment 1 is that: wherein the floating assembly 100 includes a rectangular box 101 with an upper end opening, and a plurality of floating members 102 are evenly arranged below the rectangular box 101. The floating members 102 are buoys made of high molecular polyethylene (HDPE) through a blow molding process. The evenly distributed floating members 102 ensure the stability of the floating assembly 100, so that the floating assembly 100 floats normally above the water body.

[0030] The microalgae fixing member 200 is fixedly disposed at the lower end of the inner wall of the rectangular box 101 .

[0031] The length of the microalgae fixing member 200 is less than that of the rectangular box 101. A buffer area is provided between the feed port 103 and the discharge port 104 and the microalgae fixing member 200, which effectively prevents wastewater from scouring the microalgae fixing member 200 and reduces the possibility of microalgae falling off the microalgae fixing member 200.

[0032] Wherein, the microalgae fixing component adopts a filter paper layer, a filter cloth layer, a sponge layer, a plastic foam layer, a fiber fabric layer or a porous carrier layer.

[0033] The discharge pipe 500 is provided with a discharge valve 600. The discharge valve 600 can be opened and the feed pump 400 can be started according to actual needs to ensure the effect of wastewater treatment.

[0034] Wherein, the feed pump 400 is arranged in the water body.

[0035] The feed pump 400 is disposed in the floating assembly 100. The feed pump 400 can be placed according to actual needs.

[0036] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent changes made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A floating algae cultivation device, characterized in that: The invention comprises a floating component (100) floating on a water body, wherein a microalgae fixing member (200) for fixing microalgae is arranged inside the floating component (100), a feed port (103) is arranged on one side of the floating component (100), the feed port (103) is connected to a feed pump (400) via a feed pipe (300), a discharge port (104) is arranged on the other side of the floating component (100), the discharge port (104) is connected to a discharge pipe (500), and a transparent protective film (700) is arranged above the floating component (100).

2. A floating algae cultivation device according to claim 1, characterized in that: The floating assembly (100) comprises a rectangular box (101) with an open upper end, and a plurality of floating members (102) are evenly arranged below the rectangular box (101).

3. A floating algae cultivation device according to claim 1, characterized in that: The microalgae fixing member (200) is fixedly arranged at the lower end of the inner wall of the rectangular box (101).

4. The floating algae cultivation device according to claim 1, characterized in that: The length of the microalgae fixing element (200) is smaller than the length of the rectangular box (101).

5. The floating algae cultivation device according to claim 1, characterized in that: The microalgae fixing component adopts a filter paper layer, a filter cloth layer, a sponge layer, a plastic foam layer, a fiber fabric layer or a porous carrier layer.

6. The floating algae cultivation device according to claim 1, characterized in that: The discharge pipe (500) is provided with a discharge valve (600).

7. The floating algae cultivation device according to claim 1, characterized in that: The feed pump (400) is arranged in a body of water.

8. The floating algae cultivation device according to claim 1, characterized in that: The feed pump (400) is arranged in the floating assembly (100).

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