Marine organism comprehensive culture device for culturing plant biological bait by using biogas slurry

Abstract

The utility model relates to a marine organism comprehensive culture device for culturing plant biological bait by utilizing biogas slurry, and belongs to the field of mariculture. A liquid outlet of the biogas slurry storage area is communicated with the plant bait culture area through a biogas slurry main liquid outlet pipe, the plant bait culture area is connected with a plant bait water inlet pipe through a filter pump, a slag outlet of the biogas slurry storage area is communicated with the bottom slag treatment area through a slag discharge main pipe, and an inflation stone is arranged at the bottom of the bottom slag treatment area and connected with an inflation pipe. The biogas slurry storage area is higher than the bottom residue treatment area and the plant bait culture area, a residue outlet of the bottom residue treatment area is communicated with the comprehensive culture area through a bottom residue feeding pipe, the bottom residue treatment area and the plant bait culture area are higher than the comprehensive culture area, and the plant bait culture area is communicated with the comprehensive culture area through a total algae feeding pipe. The comprehensive breeding area is provided with an intertidal zone water changing gate, continuous use of biogas slurry can be achieved, biological diversity is achieved through space isolation of animals of different feeding habits, food competition is effectively avoided, and the stability of the whole breeding system is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of seawater aquaculture, in particular to a marine biological comprehensive aquaculture device which utilizes biogas slurry to cultivate plant biological bait. Background Art

[0002] As we all know, biogas slurry is a high-concentration organic wastewater produced by anaerobic fermentation of organic matter such as livestock and poultry manure. It not only contains rich nutrients such as nitrogen, phosphorus and potassium, but also contains active substances such as humic acid, amino acids and vitamins that can promote crop growth. It is a good field liquid fertilizer. The resource utilization of biogas slurry can save irrigation water and reduce the use of chemical fertilizers. It is in line with the concept of circular economy and green agriculture in today's society and has great promotion and application value. Land consumption is the main method of biogas slurry treatment in my country, but my country's arable land area is limited, and there has long been a contradiction between the continuity of biogas slurry production and the seasonality of crop fertilizer demand. At the same time, different crop-soil systems have different absorption capacities for biogas slurry. Overloaded application of biogas slurry on site can cause problems such as seedling burning, soil compaction and groundwater pollution. Therefore, the extensive and reasonable use of biogas digester residual liquid is a comprehensive topic, which is not only beneficial to agricultural production, but also has a significant positive effect on the improvement of the ecological environment.

[0003] In current marine aquaculture, farmed animals are usually fed with artificial feed. The poor palatability of the feed and the impact of residual feed on the aquaculture water environment result in low aquaculture density and the inability to improve production efficiency. Unicellular algae, large algae, bacteria, and fungi are high-quality biological feed and probiotics for many marine aquaculture species (oysters, abalone and other shellfish and filter-feeding fish). They have strong palatability, and residual feed, especially plant residual feed, is environmentally friendly, which can not only purify the aquaculture water environment but also provide oxygen. The biogas slurry treated and proportioned to a suitable concentration is a good culture medium for these plant biological feeds and probiotics. The small and medium organic particles in the biogas slurry are also a good food source for benthic organisms such as sea cucumbers. Therefore, using biogas slurry to cultivate plant biological feed and probiotics and carry out scientific multi-variety comprehensive aquaculture can not only improve production efficiency, but also continuously obtain high-quality marine aquaculture protein. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a marine organism integrated breeding device for cultivating plant biological bait using biogas slurry, which can realize the continuous use of biogas slurry and ensure the stability of the entire breeding system.

[0005] The utility model adopts the following technical scheme to solve the technical problems: a marine biological comprehensive breeding device for cultivating plant biological bait by utilizing biogas slurry, which is provided with a biogas slurry storage area, and is characterized in that a liquid outlet of the biogas slurry storage area is connected with the plant bait cultivation area through a biogas slurry total liquid outlet pipe, the plant bait cultivation area is connected with a plant bait water inlet pipe through a filter pump, a slag outlet of the biogas slurry storage area is connected with a bottom residue treatment area through a slag discharge total pipe, an aeration stone is provided at the bottom of the bottom residue treatment area, the aeration stone is connected with the aeration pipe, the biogas slurry storage area is higher than the bottom residue treatment area and the plant bait cultivation area, a slag outlet of the bottom residue treatment area is connected with the comprehensive breeding area through a bottom residue feeding pipe, the bottom residue treatment area and the plant bait cultivation area are higher than the comprehensive breeding area, the plant bait cultivation area is connected with the comprehensive breeding area through an algae total feeding pipe, and an intertidal zone water exchange gate is installed in the comprehensive breeding area.

[0006] The utility model can also be achieved by the following measures:

[0007] The biogas slurry storage area includes three biogas slurry storage tanks, each of which is respectively equipped with a first metering valve, a second metering valve, a third metering valve and a fourth metering valve from top to bottom. The first metering valve, the second metering valve, the third metering valve and the fourth metering valve converge into a biogas slurry main outlet pipe, and a biogas slurry main outlet valve is installed on the biogas slurry main outlet pipe.

[0008] The bottom of the biogas slurry storage tank is designed with a gentle slope, and a slag discharge pipe is provided at the lowest point. A valve is provided on the slag discharge pipe, and the slag discharge pipes converge into a slag discharge main pipe.

[0009] The bottom slag treatment area is provided with a bottom slag treatment pool, the slag discharge main pipe is connected to the bottom slag treatment pool, an inflatable stone is provided at the bottom of the bottom slag treatment pool, and the inflatable stone is connected to the inflatable pipe.

[0010] The bottom of the bottom slag treatment pool is designed with a gentle slope, and an opening is provided at the lowest point thereof to connect a bottom slag feeding pipe, on which a bottom slag control valve is installed.

[0011] The plant bait cultivation area includes five plant bait cultivation pools, each of which is provided with an air stone at the bottom, the air stone is connected to an inflation tube, a waterproof LED light source is provided at the bottom of the plant bait cultivation pool, and a biogas slurry total outlet pipe is provided with a biogas slurry spray pipe above each plant bait cultivation pool, and each biogas slurry spray pipe is provided with a biogas slurry control valve.

[0012] The bottom of the plant bait culture pool is designed with a gentle slope, and the lowest point has an opening connected to an algae liquid outlet pipe, on which an algae liquid control valve is provided. The algae liquid outlet pipe of the plant bait culture pool is connected to the algae liquid main feeding pipe.

[0013] The integrated breeding area is provided with an integrated breeding pond, which is an intertidal breeding pond. The bottom residue feeding pipe enters along the bottom of the integrated breeding pond and branches out into a plurality of parallel branch pipes. The branch pipes are provided with spray holes. The branch pipes are distributed throughout the bottom of the integrated breeding pond. Breeding cages and breeding boxes are distributed together in the upper and middle part of the integrated breeding pond and are fixed on the floating pipe.

[0014] The beneficial effects of the utility model are that it can realize the continuous use of biogas slurry, completely solve the problem of resource utilization of biogas slurry, and the spatial isolation of animals with different feeding habits realizes biodiversity and effectively avoids food competition, thereby ensuring the stability of the entire breeding system. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 A schematic structural diagram of the utility model.

[0017] Figure 2 This is a schematic diagram of the structure of the biogas slurry storage area.

[0018] Figure 3 This is a schematic diagram of the structure of the bottom slag treatment pool.

[0019] Figure 4 This is a schematic diagram of the structure of the plant bait cultivation area.

[0020] Figure 5 This is a schematic diagram of the structure of a comprehensive breeding pond.

[0021] In the figure, I. Biogas slurry storage area, II. Plant feed cultivation area, III. Bottom residue treatment area, IV. Comprehensive breeding area, 1. Biogas slurry main outlet pipe, 2. Main slag discharge pipe, 3. Main algae feeding pipe, 4. Bottom residue feeding pipe, 5. Biogas slurry storage tank, 6. Biogas slurry outlet, 7. First metering valve, 8. Second metering valve, 9. Third metering valve, 10. Fourth metering valve, 11. Biogas slurry main outlet valve, 12. Slag discharge pipe, 13. valve, 14. bottom slag treatment pool, 15. aeration stone, 16. bottom slag control valve, 17. plant feed culture pool, 18. air stone, 19. waterproof LED light source, 20. biogas slurry spray pipe, 21. biogas slurry control valve, 22. algae liquid outlet pipe, 23. algae liquid control valve, 24. integrated breeding pool, 25. branch pipe, 26. breeding cage, 27. breeding box, 28. intertidal zone water exchange gate, 29. filter pump, 30. floating tube. DETAILED DESCRIPTION

[0022] Figure 1The liquid outlet of the middle biogas slurry storage area I is connected with the plant bait cultivation area II through the biogas slurry main liquid outlet pipe 1, the plant bait cultivation area II is connected with the plant bait inlet pipe through the filter pump 29, the slag outlet of the biogas slurry storage area I is connected with the bottom residue treatment area III through the slag discharge main pipe 2, the biogas slurry storage area I is higher than the bottom residue treatment area III and the plant bait cultivation area II, the slag outlet of the bottom residue treatment area III is connected with the comprehensive breeding area IV through the bottom residue feeding pipe 4, the bottom residue treatment area III and the plant bait cultivation area II are higher than the comprehensive breeding area IV, the plant bait cultivation area II is connected with the comprehensive breeding area IV through the algae main feeding pipe 3, and the intertidal zone water exchange gate 28 is installed on the comprehensive breeding area IV.

[0023] Figure 2 There are three biogas slurry storage tanks 5 in the biogas slurry storage area 1, the bottom of the biogas slurry storage tank 5 is 1.2m above the ground, the height in the tank is 2.0m, the length is 4m, and the width is 2m. Each biogas slurry storage tank 5 is distributed with four biogas slurry outlets 6 from top to bottom, and the heights of the four biogas slurry outlets 6 from the bottom of the tank are 150cm, 105cm, 60cm, and 8cm respectively. The four biogas slurry outlets 6 are connected to the first metering valve 7, the second metering valve 8, the third metering valve 9, and the fourth metering valve 10 through the biogas slurry outlet pipe, and the biogas slurry outlets of the first metering valve 7, the second metering valve 8, the third metering valve 9, and the fourth metering valve 10 are respectively connected to the biogas slurry main outlet pipe 1, and the biogas slurry main outlet pipe 1 is equipped with a biogas slurry main outlet valve 11. The bottom of the biogas slurry storage tank 5 is designed with a gentle slope, and a slag discharge pipe 12 is provided at the lowest point, and a valve 13 is provided on the slag discharge pipe 12, and the slag discharge pipes 12 of the three biogas slurry storage tanks 5 converge to the slag discharge main pipe 2.

[0024] Figure 3 The bottom slag treatment area III is provided with a bottom slag treatment pool 14, which is 0.8m above the ground. The slag discharge main pipe 2 is connected to the bottom slag treatment pool 14. The bottom of the bottom slag treatment pool 14 is provided with an inflatable stone 15, and the distribution density of the inflatable stone 15 is 1 / m 2 The bottom of the bottom slag treatment pool 14 is designed with a gentle slope, and an opening is provided at the lowest point to connect the bottom slag feeding pipe 4 , and a bottom slag control valve 16 is installed on the bottom slag feeding pipe 4 .

[0025] Figure 4 Plant feed culture area II is equipped with five plant feed culture pools 17, each of which is 1m high, 15m long and 10m wide. Each plant feed culture pool 17 is equipped with air bubbles 18 at the bottom, and the distribution density of the air bubbles 18 is 0.2 / m 2A waterproof LED light source 19 is provided at the bottom of the plant bait culture pool 17, a biogas slurry main outlet pipe 1 is provided with a biogas slurry spray pipe 20 above each plant bait culture pool 17, each biogas slurry spray pipe 20 is provided with a biogas slurry control valve 21, and a biogas slurry spray hole is processed on the biogas slurry spray pipe 20. The bottom of the plant bait culture pool 17 is designed with a gentle slope, and an opening is provided at the lowest point to connect the algae liquid outlet pipe 22. Each algae liquid outlet pipe 22 is provided with an algae liquid control valve 23, and the algae liquid outlet pipes 22 of the five plant bait culture pools 17 are connected to the algae liquid main feeding pipe 3.

[0026] Figure 5 The integrated breeding pond 24 of the integrated breeding area IV is 3.5m deep, 300m long and 200m wide. The integrated breeding pond 24 is an intertidal breeding pond. The bottom residue feeding pipe 4 enters along the bottom of the integrated breeding pond 24 and branches out into a plurality of parallel branch pipes 25. The branch pipes 25 are provided with spray holes. The branch pipes 25 are distributed throughout the bottom of the integrated breeding pond 24 with a spacing of 3 meters. The breeding cages 26 for filter-feeding animals and the breeding boxes 27 for scraping animals are distributed in the upper and middle part of the integrated breeding pond 24 and are fixed on the floating pipe.

[0027] When the utility model is used, the biogas slurry is firstly input into the three biogas slurry storage tanks 5 for precipitation 24 hours in advance, and then on the first day, the filtered seawater is injected into the first plant bait culture tank 17 through the filter pump 29, and the air bubble stone 18 is inflated, and the first metering valve 7 and the biogas slurry total outlet valve 11 of the highest biogas slurry outlet 6 of the first biogas slurry storage tank 5 are opened to allow the biogas slurry to pass through the biogas slurry control valve 21 to the biogas slurry spray pipe 20 so that the biogas slurry is sprayed into the first plant bait culture tank 17 for cultivation, and the amount of biogas slurry added is 2.4m 3 When the nitrogen concentration reaches 30 ppm, the first metering valve 7 is closed, and high-concentration Chlorella algae are added to the first plant feed culture pool 17 for cultivation, so that the initial density of the algae is 50×10 5 / ml, turn on the waterproof LED light source 19 at the bottom of the pool, and continue to inflate through the air stone 18; on the second day, the filtered seawater is injected into the second plant bait culture pool 17 through the filter pump 29, the air stone 18 is inflated, and the first metering valve 7 and the total outlet valve 11 of the first biogas slurry storage pool 5 at the highest biogas slurry outlet 6 are opened, and the biogas slurry passes through the biogas slurry control valve 21 to the biogas slurry spray pipe 20 so that the biogas slurry is sprayed into the second plant bait culture pool 17 for cultivation. When no biogas slurry flows out of the first metering valve 7, the second metering valve 8 is opened. When the amount of biogas slurry added reaches 2.4m 3 When the nitrogen concentration reaches 30 ppm, the second metering valve 8 and the total slurry outlet valve 11 are closed, and high-concentration Chlorella algae are added to the second plant feed culture pool 17 to make the initial density of the algae to be 50×10 5 / ml, turn on the waterproof LED light source 19 at the bottom of the pool, and keep the air stone 18 inflated; on the third day, the filtered seawater is injected into the third plant bait culture pool 17 through the filter pump 29, the air stone 18 is inflated, the second metering valve 8 and the total outlet valve 11 of the biogas slurry outlet 6 of the first biogas slurry storage pool 5 are opened, and the biogas slurry passes through the biogas slurry control valve 21 to the biogas slurry spray pipe 20 so that the biogas slurry is sprayed into the third plant bait culture pool 17. When the amount of biogas slurry added reaches 2.4m 3 When the nitrogen concentration reaches 30 ppm, the second metering valve 8 and the total slurry outlet valve 11 are closed, and high-concentration Chlorella algae are added to the third plant feed culture pool 17 to make the initial density of the algae to be 50×10 5 / ml, turn on the waterproof LED light source 19 at the bottom of the pool, and keep the air stone 18 inflated; on the fourth day, the filtered seawater is injected into the fourth plant bait culture pool 17 through the filter pump 29, the air stone 18 is inflated, the second metering valve 8 and the total liquid outlet valve 11 of the biogas slurry outlet 6 of the first biogas slurry storage pool 5 are opened, and the biogas slurry passes through the biogas slurry control valve 21 to the biogas slurry spray pipe 20 so that the biogas slurry is sprayed into the fourth plant bait culture pool 17, and when no biogas slurry flows out of the second metering valve 8, the third metering valve 9 is opened, and when the amount of biogas slurry added reaches 2.4m 3 When the nitrogen concentration reaches 30 ppm, the third metering valve 9 and the total liquid outlet valve 11 are closed, and the high-concentration Chlorella algae are added to the fourth plant feed culture pool 17 so that the initial density of the algae is 50×10 5 / ml, turn on the waterproof LED light source 19 at the bottom of the pool, and keep the air stone 18 inflated; on the fifth day, inject filtered seawater into the fifth plant bait culture pool 17 through the filter pump 29, inflate the air stone 18, open the third metering valve 9 and the total outlet valve 11 of the biogas slurry outlet 6 of the first biogas slurry storage pool 5, and the biogas slurry flows through the biogas slurry control valve 21 to the biogas slurry spray pipe 20, and the biogas slurry is sprayed into the fifth plant bait culture pool 17. When the amount of biogas slurry added reaches 2.4m 3 When the nitrogen concentration reaches 30 ppm, the third metering valve 9 and the total slurry outlet valve 11 are closed, and high-concentration Chlorella algae are added to the fifth plant feed culture pool 17 to make the initial density of the algae to be 50×10 5 / ml, turn on the waterproof LED light source 19 at the bottom of the pool, and keep the air stone 18 inflated; the first plant bait culture pool 17 is cultured for 5 days to reach the feeding density, and the algae liquid control valve 23 on the algae liquid outlet pipe 22 at the bottom of the first plant bait culture pool 17 is opened to allow the unicellular algae to flow into the integrated culture pool 24 through the algae total feeding pipe 3. On the sixth day, filtered seawater is injected into the first plant bait culture pool 17 through the filter pump 29, the air stone 18 is inflated, and the third metering valve 9 and the total outlet valve 11 of the biogas liquid at the biogas liquid outlet 6 of the first biogas liquid storage pool 5 are opened, and the biogas liquid passes through the biogas liquid control valve 21 to the biogas liquid spray pipe 20 so that the biogas liquid is sprayed into the first plant bait culture pool 17. When there is no biogas liquid flowing out of the third metering valve 9, the fourth metering valve 10 is opened, and the amount of biogas liquid added is 2.4m 3 When the nitrogen concentration reaches 30 ppm, the fourth metering valve 10 and the total slurry outlet valve 11 are closed, and high-concentration Chlorella algae are added to the first plant feed culture pool 17. The initial density of the algae is 50×10 5 / ml, turn on the waterproof LED light source 19 at the bottom of the pool, and keep the bubble stone 18 inflated; after 5 days of cultivation in the second plant bait cultivation pool to reach the feeding density, open the algae liquid control valve 23 on the algae liquid outlet pipe 22 at the bottom of the second plant bait cultivation pool 17 to allow the unicellular algae to flow into the integrated breeding pool 24. On the seventh day, filtered seawater is injected into the second plant bait culture pool 17 through the filter pump 29, the air stone 18 is inflated, the fourth metering valve 10 and the total outlet valve 11 of the first biogas storage pool 5 are opened, and the biogas flows through the biogas control valve 21 to the biogas spray pipe 20 so that the biogas is sprayed into the second plant bait culture pool 17. When there is no biogas flowing out of the fourth metering valve 10, the fourth metering valve 10 is closed, the first metering valve 7 at the highest position of the second biogas storage pool 5 is opened, and the valve 13 on the slag discharge pipe 12 of the biogas storage pool 5 is opened at the same time, so that the bottom residue flows into the bottom residue treatment pool 14, and probiotics are added to the bottom residue treatment pool 14. After aeration treatment by the air stone 15 for 24 hours, the bottom residue control valve 16 of the bottom residue feeding pipe 4 is opened to make the bottom residue flow into the bottom of the comprehensive breeding pool 24, and dispersed to the licking animal breeding area through the branch pipe 25 with a liquid spray hole. And so on, the cycle is repeated, and the biogas in the second and third biogas storage pools 5 are used for comprehensive breeding.

[0028] The integrated culture pond 24 receives water through the intertidal zone water exchange gate 28 on the day of high tide, and 1132 kg of sea cucumber seedlings are scattered at the bottom. The filter-feeding animal oysters are raised in the pond using culture cages 26. The culture cages 2 are hooked on tubular floats, and the tubular floats are 4 meters long. Each float hangs 6 culture cages 26, and 4 tubular floats are connected in series, with a total of 300 strings. Each culture cage 26 is put into 1.0 kg of oyster seedlings, and a total of 7200 kg of oyster seedlings are put. The water temperature is 20-30℃, the salinity is 29-32, and the pH is 7.8-8.1. The water is changed once every half month on the day of high tide. After 30 days of culture, a total of 2523 kg of sea cucumbers are harvested, and the average oyster per cage is 9.3 kg, and the total harvest is about 66960 kg.

[0029] The system can also be used for integrated breeding of scraping animals and licking animals. After adding seawater to the plant bait culture pool 17, the air stone is inflated, and the metering valve of the first biogas slurry storage pool 5 is opened in sequence to inject an appropriate amount of biogas slurry. When no biogas slurry flows out of the fourth metering valve 10, the fourth metering valve 10 is closed, and the first metering valve 7 at the highest position of the second biogas slurry storage pool 5 is opened. At the same time, the valve 13 on the slag discharge pipe 12 of the biogas slurry storage pool 5 is opened to allow the bottom slag to flow into the bottom slag treatment pool 14. When the nitrogen concentration in the plant bait culture pool 17 reaches 20ppm, large algae are added, the waterproof LED light source 19 at the bottom of the pool is turned on, probiotics are added to the bottom slag treatment pool 14, and aeration is carried out through the air stone 15. After 24 hours of treatment, the bottom slag control valve 16 of the bottom slag feeding pipe 4 is opened to allow the bottom slag to flow into the bottom of the comprehensive breeding pool 24. The large algae in the plant bait culture pool 17 are cultured for 3-5 days, and then some are selected and fished out to feed the scraping animals suspended in the culture box 27 in the comprehensive breeding pool 24. At the same time, the algae liquid control valve 23 on the algae liquid outlet pipe 22 at the bottom of the plant bait culture pool 17 is opened to allow the seawater for culturing the large algae to flow into the comprehensive breeding pool 24, and then the filter pump 29 is opened to inject filtered seawater into the plant bait culture pool 17 and add biogas slurry to continue culturing the remaining large algae. This method cultivates the finished products of Ulva comprehensive culture, sea urchins and sea cucumbers for 60 days, and the weight of sea urchins and sea cucumbers increases by 32% and 21%, respectively.

[0030] The utility model uses concentrated biogas slurry as fertilizer raw material, avoids pollution caused by biogas slurry discharge, realizes resource recycling, and has high ecological value; the characteristic drop design of each functional area is energy-saving, efficient, easy to operate and manage; the biogas slurry is pre-precipitated in the biogas slurry storage tank, and the biogas slurry flows out step by step from top to bottom to avoid the suspension of biogas residue caused by strong water flow and thus being brought into the plant bait cultivation tank. More than two biogas slurry storage tanks are set to ensure the continuous storage time and recycling of biogas slurry. Biogas residue can be used as nutrient particles for benthic licking animals as probiotic groups after aeration treatment to avoid waste and environmental pollution. An artificial light source is designed at the bottom of the plant bait cultivation tank to overcome the disadvantage that plants cannot grow due to cloudy days, dark nights and the shielding effect of upper plants, greatly improve the growth efficiency of plant bait, improve the conversion efficiency of various nutrients in biogas slurry, and well solve the contradiction between the supply of plant bait and the feeding of farmed animals. The plant bait culture pond is suitable for the cultivation of both unicellular algae and large algae. Different types of plant bait can be cultivated according to the season, environmental conditions and needs of farmed animals to ensure the continuity of sludge treatment and the continuous supply of plant bait. In the integrated breeding pond, the spatial isolation of different feeding animals realizes biodiversity and effectively avoids food competition, ensuring the stability of the entire breeding system. The integrated breeding pond is an intertidal pond, and water can be changed during high tide according to the rise and fall of the tide. The filter-feeding animal breeding cages use tubular floats in series for easy harvesting at a later time. The scraper-feeding animal breeding cages use two tubular floats in parallel for the feeding of large seaweed bait.

Claims

1. A marine biological integrated breeding device for cultivating plant biological bait using biogas slurry, provided with a biogas slurry storage area, characterized in that: The liquid outlet of the biogas slurry storage area is connected with the plant bait cultivation area through the biogas slurry main liquid outlet pipe, the plant bait cultivation area is connected with the plant bait inlet pipe through the filter pump, the slag outlet of the biogas slurry storage area is connected with the bottom residue treatment area through the slag discharge main pipe, an aeration stone is provided at the bottom of the bottom residue treatment area, the aeration stone is connected with the aeration pipe, the biogas slurry storage area is higher than the bottom residue treatment area and the plant bait cultivation area, the slag outlet of the bottom residue treatment area is connected with the comprehensive breeding area through the bottom residue feeding pipe, the bottom residue treatment area and the plant bait cultivation area are higher than the comprehensive breeding area, the plant bait cultivation area is connected with the comprehensive breeding area through the algae main feeding pipe, and the comprehensive breeding area is equipped with an intertidal water exchange gate.

2. The integrated marine biological breeding device for cultivating plant biological bait using biogas slurry according to claim 1, characterized in that The biogas slurry storage area includes three biogas slurry storage tanks, each of which is respectively equipped with a first metering valve, a second metering valve, a third metering valve and a fourth metering valve from top to bottom. The first metering valve, the second metering valve, the third metering valve and the fourth metering valve converge into a biogas slurry main outlet pipe, and a biogas slurry main outlet valve is installed on the biogas slurry main outlet pipe.

3. The integrated marine biological breeding device for cultivating plant biological bait using biogas slurry according to claim 2, characterized in that The bottom of the biogas slurry storage tank is designed with a gentle slope, and a slag discharge pipe is provided at the lowest point. A valve is provided on the slag discharge pipe, and the slag discharge pipes converge into a slag discharge main pipe.

4. The integrated marine biological breeding device for cultivating plant biological bait using biogas slurry according to claim 1, characterized in that The bottom slag treatment area is provided with a bottom slag treatment pool, the slag discharge main pipe is connected to the bottom slag treatment pool, an inflatable stone is provided at the bottom of the bottom slag treatment pool, and the inflatable stone is connected to the inflatable pipe.

5. The integrated marine biological breeding device for cultivating plant biological bait using biogas slurry according to claim 4, characterized in that The bottom of the bottom slag treatment pool is designed with a gentle slope, and an opening is provided at the lowest point thereof to connect a bottom slag feeding pipe, on which a bottom slag control valve is installed.

6. The integrated marine biological breeding device for cultivating plant biological bait using biogas slurry according to claim 1, characterized in that The plant bait cultivation area includes five plant bait cultivation pools, each of which is provided with an air stone at the bottom, the air stone is connected to an inflation tube, a waterproof LED light source is provided at the bottom of the plant bait cultivation pool, and a biogas slurry total outlet pipe is provided with a biogas slurry spray pipe above each plant bait cultivation pool, and each biogas slurry spray pipe is provided with a biogas slurry control valve.

7. The integrated marine biological breeding device for cultivating plant biological bait using biogas slurry according to claim 6, characterized in that The bottom of the plant bait culture pool is designed with a gentle slope, and the lowest point has an opening connected to an algae liquid outlet pipe, on which an algae liquid control valve is provided. The algae liquid outlet pipe of the plant bait culture pool is connected to the algae liquid main feeding pipe.

8. The integrated marine biological breeding device for cultivating plant biological bait using biogas slurry according to claim 1, characterized in that The integrated breeding area is provided with an integrated breeding pond, which is an intertidal breeding pond. The bottom residue feeding pipe enters along the bottom of the integrated breeding pond and branches out into a plurality of parallel branch pipes. The branch pipes are provided with spray holes. The branch pipes are distributed throughout the bottom of the integrated breeding pond. Breeding cages and breeding boxes are distributed together in the upper and middle part of the integrated breeding pond and are fixed on the floating pipe.

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