CN215161927U - Microalgae photobioreactor for treating biogas slurry in pig farm - Google Patents
Microalgae photobioreactor for treating biogas slurry in pig farm Download PDFInfo
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- CN215161927U CN215161927U CN202120544763.8U CN202120544763U CN215161927U CN 215161927 U CN215161927 U CN 215161927U CN 202120544763 U CN202120544763 U CN 202120544763U CN 215161927 U CN215161927 U CN 215161927U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The utility model discloses a microalgae photobioreactor for treating biogas slurry in a pig farm, which comprises an illumination module and a reactor main body for holding microalgae; the reactor main body is of a groove structure with an open upper part, a transparent arc-shaped reactor top cover is arranged above the reactor main body at intervals, and an illumination module is arranged above the reactor top cover; a first guide plate and a second guide plate are sequentially arranged in the reactor main body along the water flow direction, and the plate surfaces of the first guide plate and the second guide plate are vertical to the water flow direction; the water flow in the reactor main body can flow in an up-and-down arc shape through the first channel and the second channel under the guidance of the first guide plate and the second guide plate; the reactor main body is internally provided with a micropore aeration device communicated with an external blower, and the micropore aeration device is positioned at the bottom in the reactor main body and close to the water inlet. The utility model discloses an utilize the guide plate, prevent the sewage short circuit, guarantee sewage route of marcing and water conservancy dwell time, improve the pollutant removal ability.
Description
Technical Field
The utility model relates to a little algae reactor field, in particular to a little algae photobioreactor for handling pig farm natural pond liquid.
Background
With the rapid development of the pig raising industry, the production amount of wastewater in a pig farm is huge, anaerobic fermentation is a main treatment mode of pig raising sewage, and the biogas slurry of the product of the anaerobic fermentation in the pig farm still contains a large amount of nutrient substances such as nitrogen, phosphorus and the like. The microalgae is used for treating sewage, which is a novel sewage treatment mode, can not only utilize nutrient substances in the sewage to purify the sewage, but also produce biomass products with high added values, such as feed, biomass diesel oil and the like.
Common microalgae photobioreactor can be divided into an open type and a closed type. There are four main types of open systems: shallow water pools, circulation pools, raceway pool types, ponds. The closed type photobioreactor comprises: pipeline type, flat plate type, column shaped air lift type, stirring typeFermentors, floating membrane bags, etc. The following disadvantages still exist in the open photobioreactor: (1) the temperature and the illumination are easy to be influenced by the external environment, and the proper temperature and illumination are difficult to maintain; (2) can be polluted by dust, insects and other bacteria, and is not easy to maintain high-quality single algae culture; (3) light energy and CO2The utilization rate is not high, and high-density culture cannot be realized; these factors all result in low cell culture density, so that the harvesting cost is high, the microalgae species suitable for large pond culture must be the species capable of rapidly growing in extreme environment, and only can be used for culturing a small number of microalgae such as spirulina, chlorella and dunaliella which can tolerate extreme environment.
The flat plate type reactor is one of closed reactors, and has the advantages of high light utilization rate, simple structure and easy cleaning. The existing flat plate type photobioreactor has the following defects: (1) the solubility of carbon dioxide in sewage is low, the volume of bubbles is large in a conventional aeration mode, the retention time is short, and the absorption of microalgae is not facilitated; (2) the utilization rate of the light source is low, the illumination intensity cannot be adjusted in time, and the proper illumination intensity is difficult to adjust according to the species of the microalgae; (3) the hydraulic retention time is short, and the sewage treatment effect is general.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provide a microalgae photobioreactor for treating piggery biogas slurry.
The utility model discloses the concrete technical scheme who adopts as follows:
a microalgae photobioreactor for treating biogas slurry in a pig farm comprises an illumination module and a reactor main body for containing microalgae.
The reactor main body is of a groove structure with an open upper part, the lower part of one side wall is provided with a water inlet, and the upper part of the other side wall opposite to the position of the water inlet is provided with a water outlet; the water inlet is communicated with a sewage tank positioned outside the reactor main body through a water inlet pipeline provided with a sewage inlet pump, and the water outlet is communicated with the water collecting device through a guide pipe; a transparent reactor top cover is arranged above the reactor main body at intervals; the reactor top cover is of a concave arc structure and completely covers the upper opening of the reactor main body; the reactor top cover is provided with an illumination module for providing a light source for the inside of the reactor main body, and the distance between the illumination module and the reactor main body is adjustable.
A first guide plate and a second guide plate are sequentially arranged in the reactor main body along the water flow direction, and the plate surfaces of the first guide plate and the second guide plate are vertical to the water flow direction; the bottom of the first guide plate is fixed at the bottom in the reactor main body, two vertical side edges are respectively fixed on two opposite inner side walls of the reactor main body, the top of the first guide plate is lower than the top of the reactor main body, and a first channel for water flow circulation is formed between the first guide plate and the reactor top cover; the top of the second guide plate is flush with the top of the reactor main body, two vertical side edges are respectively fixed on two opposite inner side walls of the reactor main body, and a gap is formed between the bottom of the second guide plate and the inner bottom of the reactor main body to form a second channel for water flow circulation; the water flow in the reactor main body can flow in an up-and-down arc shape through the first channel and the second channel under the guidance of the first guide plate and the second guide plate; the reactor main body is internally provided with a micropore aeration device communicated with an external blower, and the micropore aeration device is positioned at the bottom in the reactor main body and close to the water inlet.
Preferably, the vertical projection of the lighting module in the vertical direction completely covers the vertical projection of the reactor body in the vertical direction.
Preferably, the illumination module comprises a lamp holder and a plurality of lamps, and the lamps are fixed on the lamp holder.
Furthermore, the lamp tubes are LED lamp tubes, and each lamp tube is provided with an independent switch device.
Preferably, the reactor main body, the reactor top cover, the first guide plate and the second guide plate are all made of organic glass materials.
Preferably, the water collecting device is a conical flask, and the conduit is a rubber tube.
Preferably, the micropore aeration device is a rubber micropore aeration head.
Furthermore, the micropore aeration device is of a hollow hemispherical structure, and a plurality of air holes are uniformly distributed on the arc surface.
Preferably, a flow meter is arranged on the water inlet pipeline.
Preferably, the lamp holder is made of an aluminum pipe.
Compared with the prior art, the utility model, following beneficial effect has:
1) the utility model prevents sewage short circuit by utilizing the guide plate, ensures the sewage advancing route and hydraulic retention time, and improves the pollutant removal capacity;
2) the utility model utilizes the liftable LED lamp tube frame, and each LED lamp tube is provided with an independent switch, thereby being convenient for adjusting the illumination intensity and improving the utilization rate of light energy;
3) the utility model discloses an utilize rubber micropore aeration head, compare in ordinary aeration head, the bubble is even more fine and close, increase gas-liquid area of contact.
Drawings
FIG. 1 is a schematic diagram of the structure of a reactor;
the reference numbers in the figures include: 1-a lamp holder; 2-lamp tube; 3-reactor head cover; 4-a water outlet; 5-a catheter; 6-a water collecting device; 7-a reactor body; 81-a first baffle; 82-a second baffle; 9-a microporous aeration device; 10-a blower; 11-a sewage tank; 12-sewage intake pump; 13-air holes; 14-water inlet.
Detailed Description
The invention will be further elucidated and described with reference to the drawings and embodiments. The utility model discloses in the technical characteristics of each embodiment under the prerequisite that does not conflict each other, all can carry out corresponding combination.
As shown in FIG. 1, for the utility model provides a microalgae photobioreactor for treating biogas slurry in a pig farm, the microalgae photobioreactor comprises a reactor main body 7 and an illumination module, and the connection mode and structure of each component will be specifically explained below.
The reactor body 7 has a groove-shaped structure, and the upper portion thereof is open and communicates with the outside air. A water inlet 14 is arranged at the lower part of one side wall of the reactor main body 7, a water outlet 4 is arranged at the upper part of the other side wall, and the side wall where the water inlet 14 is arranged and the side wall where the water outlet 4 is arranged are arranged oppositely, so that waste water enters the reactor main body 7 from the water inlet 14 and is discharged out of the reactor main body 7 through the water outlet 4 after full reaction treatment. The water inlet 14 is communicated with a sewage tank 11 positioned outside the reactor main body 7 through a water inlet pipeline, a sewage inlet pump 12 is arranged on the water inlet pipeline, power can be provided for sewage to enter the reactor main body 7 through the sewage inlet pump 12, and meanwhile, the flow of the sewage can be controlled. In practical application, the working and closing states of the sewage inlet pump 12 are alternately performed, and sewage is pumped into the reactor main body 7 at regular time, so that the sewage in the reactor main body 7 forms a continuous flow.
The sewage tank 11 is filled with sewage to be treated, the water outlet 4 is positioned at the upper part of the reactor main body 7, the sewage is discharged from the water outlet 4 under the action of water flow thrust and aeration after the sewage is fully reacted in the reactor main body 7, so that the energy consumption for pumping the sewage is saved, the sewage guide pipe 5 is connected with the water collecting device 6 and can be used for detecting the content of pollutants in the treated sewage, continuously adjusting the operation conditions of the reactor main body 7 and optimizing the removal efficiency of the reactor main body 7 on the pollutants. In practical application, the water inlet pipeline can be provided with the flowmeter for monitoring the flow of sewage led into the reactor main body 7, so that the flow speed and flow of sewage can be adjusted conveniently. The water discharge port 4 communicates with a water collecting device 6 located outside the reactor main body 7 through a pipe 5. The water collecting device 6 may be a common water collecting barrel, a water collecting bottle, etc., and in this embodiment, the water collecting device 6 is a conical bottle. The bottle mouth of the conical bottle is plugged with a rubber plug which is provided with two holes, one hole is connected with the rubber tube of the water outlet, and the other hole is used for maintaining the air pressure in the bottle.
A transparent reactor top cover 3 is arranged above the reactor main body 7 and can completely cover the upper opening of the reactor main body 7. The reactor top cover 3 is a concave arc-shaped structure, and a certain interval is arranged between the reactor top cover and the reactor main body 7, so that a semi-closed system is formed together. The reactor head 3 can be used to prevent impurities from falling into the reactor, and the arc-shaped structure facilitates the escape of gas in the reactor body 7 from the top gap, so that the reactor body 7 can stably operate. The top of the reactor top cover 3 is provided with an illumination module for providing a light source for the inside of the reactor main body 7, and the distance between the illumination module and the reactor main body 7 is adjustable. By adjusting the distance between the illumination module and the reactor body 7, the illumination intensity inside the reactor body 7 can be changed. In the present embodiment, the vertical projection of the lighting module in the vertical direction completely covers the vertical projection of the reactor main body 7 in the vertical direction, so that the lighting module can sufficiently provide a light source for the inside of the reactor main body 7. The illumination module comprises a lamp holder 1 and a plurality of lamp tubes 2, wherein the lamp tubes 2 are fixed on the lamp holder 1, and the vertical height of the lamp holder can be freely adjusted. The lamp holder 1 can be made of light aluminum tubes, the lamp tubes 2 can be LED lamp tubes, and each lamp tube 2 is provided with an independent switch device. In order to enable the microalgae in the reactor main body 7 to better treat sewage, the height of the lamp holder and the number of the LED lamp tubes can be adjusted, so that the illumination in the reactor main body 7 is kept at 4000 lx.
The reactor main body 7 is internally provided with a first guide plate 81 and a second guide plate 82 in sequence along the water flow direction, and the surfaces of the first guide plate 81 and the second guide plate 82 are perpendicular to the water flow direction. The bottom of the first guide plate 81 is fixed at the bottom in the reactor main body 7, two vertical side edges are respectively fixed at two opposite inner side walls of the reactor main body 7, the top part is lower than the top part of the reactor main body 7, and a first channel for water flow circulation is formed between the first guide plate 81 and the reactor top cover 3. The top of the second guide plate 82 is flush with the top of the reactor main body 7, two vertical side edges are respectively fixed on two opposite inner side walls of the reactor main body 7, and a gap is formed between the bottom of the second guide plate and the inner bottom of the reactor main body 7 to form a second channel for water flow circulation. The water flow inside the reactor main body 7 can be guided by the first guide plate 81 and the second guide plate 82 to flow in an up-and-down arcuate shape through the first passage and the second passage.
The first guide plate 81 and the second guide plate 82 are used for improving the hydraulic retention time of the sewage in the reactor main body 7, the reactor main body 7 is divided into three relatively independent reaction chambers by the first guide plate 81 and the second guide plate 82, so that the sewage is fully contacted with the microalgae under the condition of improving the hydraulic retention time of the sewage, and the removal rate of pollutants in the sewage is improved. In this embodiment, the reactor main body 7, the reactor top cover 3, the first guide plate 81 and the second guide plate 82 may all be made of organic glass. The conduit 5 is a rubber tube.
The reactor main body 7 is internally provided with a micropore aeration device 9 communicated with an external blower 10, and the micropore aeration device 9 is positioned at the bottom in the reactor main body 7 and close to a water inlet 14. In this embodiment, the micro-aeration device 9 may be a rubber micro-aeration head. The rubber micropore aeration head is of a hollow hemispherical structure and comprises a straight chassis and an arc-shaped rubber diaphragm, and a plurality of air holes 13 are uniformly distributed in the rubber diaphragm by forming a cavity between the rubber diaphragm and the chassis. The utility model discloses a rubber micropore aeration head compare with conventional quartz aeration head, and the bubble of production is even more fine and close, can improve the air content in the natural pond liquid, increases little algae utilization ratio to gas to improve little algae's growth rate, little algae concentration in the reactor, finally improve the treatment effeciency of sewage.
Above-mentioned little algae photobioreactor is in the use, aerates pending sewage and little algae of reactor main part 7 through micropore aeration device 9, and adjustment illumination module shines reactor main part 7, makes sewage handle under little algae effect, and concrete process is as follows:
by means of aeration, the oxygen in the air is utilized to decompose the organic COD into CO under the action of aerobic microorganisms2，CO2The substrate is absorbed and utilized as the substrate of the photosynthesis of the microalgae, and simultaneously, a large amount of nutrient elements such as nitrogen, phosphorus and the like in the sewage are consumed in the synthesis process, so that the aim of removing the nitrogen and phosphorus in the culture wastewater is fulfilled, and O generated by the photosynthesis2But also can promote the degradation of COD and degrade CO needed by producing microalgae2The relationship of algae bacteria for purifying sewage in a mutual assistance way is formed, in addition, the biogas slurry in the pig farm contains abundant organic matters and is used as an effective carbon source for the growth of the microalgae, so that the cost of supplying external carbon can be saved, and the content of the organic matters can be reduced. The pig farm biogas slurry is rich in nitrogen and phosphorus elements, which are nutrient substances required by the growth of microalgae. The microalgae can utilize the pollutants in the sewage to grow and reproduce, and can produce high added value while purifying the sewageThe biomass product of (1). Through the utility model discloses little algae photobioreactor can effectively reduce COD, NH in the sewage to the processing of sewage4 +TN and TP, the removal of pollutants can reach more than 90 percent.
The above-mentioned embodiments are merely a preferred embodiment of the present invention, but it is not intended to limit the present invention. Various changes and modifications can be made by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present invention. Therefore, all the technical schemes obtained by adopting the mode of equivalent replacement or equivalent transformation fall within the protection scope of the utility model.
Claims (10)
1. A microalgae photobioreactor for treating biogas slurry in a pig farm is characterized by comprising an illumination module and a reactor main body (7) for containing microalgae;
the reactor main body (7) is of a groove structure with an open upper part, the lower part of one side wall is provided with a water inlet (14), and the upper part of the other side wall opposite to the water inlet (14) is provided with a water outlet (4); the water inlet (14) is communicated with a sewage tank (11) positioned outside the reactor main body (7) through a water inlet pipeline provided with a sewage inlet pump (12), and the water outlet (4) is communicated with the water collecting device (6) through a guide pipe (5); a transparent reactor top cover (3) is arranged above the reactor main body (7) at intervals; the reactor top cover (3) is of a concave arc structure and completely covers the upper opening of the reactor main body (7); an illumination module used for providing a light source for the interior of the reactor main body (7) is arranged above the reactor top cover (3), and the distance between the illumination module and the reactor main body (7) is adjustable;
a first guide plate (81) and a second guide plate (82) are sequentially arranged in the reactor main body (7) along the water flow direction, and the surfaces of the first guide plate (81) and the second guide plate (82) are vertical to the water flow direction; the bottom of the first guide plate (81) is fixed at the bottom in the reactor main body (7), two vertical side edges are respectively fixed on two opposite inner side walls of the reactor main body (7), the top of the first guide plate is lower than that of the reactor main body (7), and a first channel for water flow circulation is formed between the first guide plate (81) and the reactor top cover (3); the top of the second guide plate (82) is flush with the top of the reactor main body (7), two vertical side edges of the second guide plate are respectively fixed on two opposite inner side walls of the reactor main body (7), and a gap is formed between the bottom of the second guide plate and the inner bottom of the reactor main body (7) to form a second channel for water flow circulation; the water flow in the reactor main body (7) can flow in an up-and-down arc shape through the first channel and the second channel under the guidance of the first guide plate (81) and the second guide plate (82); the reactor main body (7) is internally provided with a micropore aeration device (9) communicated with an external blower (10), and the micropore aeration device (9) is positioned at the bottom in the reactor main body (7) and close to the water inlet (14).
2. The microalgae photobioreactor according to claim 1, characterized in that the vertical projection of the lighting module in the vertical direction completely covers the vertical projection of the reactor body (7) in the vertical direction.
3. The microalgae photobioreactor according to claim 1, characterized in that the lighting module comprises a lamp holder (1) and a plurality of lamps (2), the lamps (2) being fixed to the lamp holder (1).
4. A microalgae photobioreactor according to claim 3, characterized in that the tubes (2) are LED tubes, each tube (2) being provided with an independent switch device.
5. The microalgae photobioreactor according to claim 1, wherein the reactor body (7), the reactor top cover (3), the first flow guide plate (81) and the second flow guide plate (82) are all made of organic glass.
6. The microalgae photobioreactor according to claim 1, characterized in that the water collecting device (6) is a conical flask and the conduit (5) is a rubber tube.
7. The microalgae photobioreactor according to claim 1, characterized in that the micro-porous aeration device (9) is a rubber micro-porous aeration head.
8. The microalgae photobioreactor according to claim 7, wherein the micro-porous aeration device (9) has a hollow hemispherical structure, and a plurality of air holes (13) are uniformly distributed on the circular arc surface.
9. The microalgae photobioreactor as claimed in claim 1, wherein a flow meter is provided on the water inlet pipeline.
10. A microalgae photobioreactor according to claim 1, characterized in that the lamp holder (1) is made of aluminium tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120544763.8U CN215161927U (en) | 2021-03-16 | 2021-03-16 | Microalgae photobioreactor for treating biogas slurry in pig farm |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120544763.8U CN215161927U (en) | 2021-03-16 | 2021-03-16 | Microalgae photobioreactor for treating biogas slurry in pig farm |
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| CN215161927U true CN215161927U (en) | 2021-12-14 |
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| CN202120544763.8U Active CN215161927U (en) | 2021-03-16 | 2021-03-16 | Microalgae photobioreactor for treating biogas slurry in pig farm |
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