A long-acting targeted algae cultivation high-density complex in water body and a preparation method thereof

Abstract

The application discloses a kind of long-acting targeted cultivation alga high-density complex of water body and preparation method thereof, it is related to aquaculture field, the high-density complex includes the following weight parts components: small material premix 3-5 parts, sodium chloride 35-40 parts, gelatinized starch 1-3 parts, attapulgite 40-50 parts, cement 3-7 parts, titanate coupling agent 1-3 parts, molasses 2-4 parts and purified water 1-5 parts.The preparation method of the high-density complex includes the following steps: small material premix is subpackaged, is stirred uniformly with other components and adds molasses to carry out humidity control, then subpackaging and compression molding are formed, in turn plastic envelope, package and film winding.The long-acting targeted cultivation alga high-density complex of water body provided in the application can directional cultivation diatom and chlorella, and continuously release functional material, stabilize the abundance of beneficial algae, effectively solve the problem that directional cultivation beneficial organism cannot be carried out and functional material release speed is too fast.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of aquaculture, in particular to a long-acting targeted algae cultivation high-density complex in water body and a preparation method thereof. BACKGROUND

[0002] With the rapid development of China's economy and the continuous improvement of urbanization level, human activities interfere with the water environment more and more frequently. When the water environment exceeds its own carrying capacity, the aquatic ecosystem will be difficult to maintain, and eventually the water body will deteriorate and aquatic organisms will die. Microalgae in water body is a very important part of ecological environment protection and management. Cultivating and maintaining sufficient functional microalgae concentration is an important factor for efficient water purification and stable maintenance. However, due to the complexity of the water environment, the harsh environmental conditions, or the water quality characteristics of the wastewater, functional microalgae cannot exist stably for a long time, which brings great challenges to the stability of water quality. For ecological restoration of water environment, modern technology has formed a variety of technologies, such as ecological microorganism technology, which introduces high-efficiency metabolic probiotics to inhibit the growth of harmful microorganisms in water, and inhibits the content of toxic and harmful heavy metals, organic matter and other substances in water body, so as to improve the stability of the ecological system. In addition, diatom and chlorella products have also appeared, which can be used for short-term and rapid restoration of water environment and can achieve certain effect.

[0003] However, adding functional bacteria and algae can only ensure high concentration in the short term and cannot achieve long-term and sustained effect. It is difficult to maintain the concentration of functional microorganisms in a certain range for a long time. Therefore, it is necessary to seek a way to cultivate beneficial microorganisms and release functional substances in water to maintain a certain concentration for a long time and stabilize the ecological system in water. At present, mature products about slow-release technology mainly come from the United States and Australia. Domestic slow-release technology is still in the laboratory research stage, and there is a lack of mature products. The main technical bottleneck is that it is difficult to cultivate specific beneficial organisms. The existing technology is mainly broad-spectrum algae cultivation, and it is difficult to cultivate diatoms and chlorella stably and directionally. The release rate is difficult to control, and the release speed of functional substances cannot be controlled. If the release speed is too fast, the effective substances will be wasted, and the algae will die due to lack of nutrients, which will affect the water quality. The preparation method is complex, the production cost is high, and it is difficult to realize large-scale production. SUMMARY

[0004] In view of the above problems in the prior art, the present application provides a long-acting targeted algae cultivation high-density complex in water body, which can cultivate diatoms and chlorella directionally and release functional substances continuously, so as to stabilize the abundance of beneficial algae and effectively solve the problems of being unable to cultivate beneficial organisms directionally and the release speed of functional substances being too fast.

[0005] To achieve the above object, the technical scheme adopted by the present application to solve its technical problem is to provide a long-acting targeted algae cultivation high-density complex in water body, comprising the following components by weight: 3-5 parts of small material premix, 35-40 parts of sodium chloride, 1-3 parts of gelatinized starch, 40-50 parts of attapulgite, 3-7 parts of cement, 1-3 parts of titanate coupling agent, 2-4 parts of molasses and 1-5 parts of purified water.

[0006] Further, the long-acting targeted algae cultivation high-density complex in water body comprises the following components by weight: 4 parts of small material premix, 39 parts of sodium chloride, 2 parts of gelatinized starch, 45 parts of attapulgite, 5 parts of cement, 2 parts of titanate coupling agent and 3 parts of purified water.

[0007] Further, the small material premix comprises the following components by weight: 8-12 parts of sodium monosilicate, 1-5 parts of urea, 3-7 parts of potassium dihydrogen phosphate, 1-3 parts of calcium oxide, 40-50 parts of trace element premix, 3-7 parts of plant growth hormone and 30-45 parts of adhesive.

[0008] Further, the trace element premix comprises the following components by weight: 3-6 parts of copper sulfate pentahydrate, 23-30 parts of ferrous sulfate monohydrate, 30-40 parts of zinc sulfate monohydrate, 16-22 parts of manganese sulfate monohydrate, 0.5-1.6 parts of cobalt chloride, 1-2 parts of sodium selenite and 3-6 parts of potassium iodide.

[0009] Further, the plant growth hormone comprises the following components by weight: 8-12 parts of gibberellin, 40-48 parts of indole acetic acid and 33-36 parts of brassinolide.

[0010] Further, the adhesive comprises the following components by weight: 10-12 parts of dextrin, 7-10 parts of alpha starch, 4-6 parts of anionic starch, 7-9 parts of sodium cellulose, 50-60 parts of bentonite powder and 5-8 parts of polyvinyl alcohol.

[0011] The present application also provides a preparation method of the long-acting targeted algae cultivation high-density complex in water body, comprising the following steps:

[0012] S1, the small material premix is divided into small packages, and then the small material premix, sodium chloride, gelatinized starch, attapulgite, cement, titanate coupling agent and purified water are stirred uniformly, and then molasses is added by spraying to obtain a mixture I;

[0013] S2, the mixture I obtained in step S2 is divided into small packages, and then is pressed and formed into a mold, and then cracks and hardness are detected, and then is sequentially plastic-wrapped, packaged and film-wrapped to obtain the long-acting targeted algae cultivation high-density complex in water body.

[0014] Further, in step S1, the small material premix is put into a 25kg mixer and mixed evenly, with a mixing error less than 5%, and then packed into 0.5-1.5kg per bag.

[0015] Further, the small material premix, sodium chloride, gelatinized starch, attapulgite, cement, titanate coupling agent and purified water are put into a 500kg mixer and mixed evenly, and then molasses is added in a spraying manner, with a mixing error less than 5%.

[0016] The beneficial effect of the above further scheme is that: the sodium chloride is used as a main carrier to regulate the release speed of the low-density composite, the attapulgite is used as a porous carrier to assist in regulating the release speed and adjusting the osmotic pressure to assist in releasing the functional material, and the gelatinized starch, the titanate coupling agent and the cement are used as adhesives to assist in regulating the speed.

[0017] Further, the above molasses comprises the following components by weight: 7 parts of water and 3 parts of sugar.

[0018] The beneficial effect of the above further scheme is that: the molasses is added to regulate the humidity, so that the humidity is controlled at 3-5%.

[0019] Further, in step S2, the packing is 3.5-4.5kg per bag.

[0020] Further, in step S2, the mold with a height of 450-500mm is used.

[0021] Further, a 1000-ton press is used.

[0022] Further, the extrusion is performed under the compression constant force of 3-5MPa for 3-4s, then the extrusion is maintained under the pressure of 16-18MPa for 16-20s to form, and finally the pressure is released for 2-5s.

[0023] Further, the volume of the high-density composite for long-acting target cultivation of algae is 15*15*12cm. 3 .

[0024] Further, the automatic crack monitoring system is used to monitor the crack, and the hardness tester is used to measure the hardness, and the pressure is 8-10MPa.

[0025] In summary, the present application has the following beneficial effects:

[0026] 1. This invention is highly effective and applicable. Its main targeted benefits are the rapid growth of beneficial algae such as diatoms and chlorella in aquaculture water, reducing organic matter in the water, and preventing frequent outbreaks of algae and blue-green algae that deteriorate water quality. Its applicability is enhanced by improving the precision and timeliness of nutrient delivery on the basis of effectiveness. It can rapidly cultivate beneficial algae within 3 days, slowly maintain the concentration of nutrients, and release effective nutrients within 15-30 days. This overcomes the short-term effect of traditional delivery methods and achieves the goal of slow-release nutrients to improve water quality in the long term.

[0027] 2. The monosilicic acid used in this invention has excellent water solubility and stability. It does not decompose or precipitate in water, making it a very safe water treatment agent. Monosilicic acid can adsorb harmful substances and heavy metal ions in water, reduce the pH and ammonia nitrogen content, and improve water transparency and stability, thereby promoting the growth and reproduction of beneficial bacteria and improving the water quality environment. Effective monosilicic acid can penetrate cell walls and be directly absorbed by algal cells, promoting the rapid growth and reproduction of algae, especially beneficial diatoms, thereby inhibiting the excessive reproduction of cyanobacteria, thus balancing the algal community and preventing algal blooms. At the same time, diatoms synthesize stress proteins and peroxidases, strengthening the algae's ability to adapt to external changes. As a highly active soluble silicate, monosilicic acid enables heavy metal ions in water to be rapidly adsorbed onto the surface of bottom sediment particles, playing a role in solidifying heavy metals. Monosilicic acid can also reduce the risk of dinoflagellate blooms in seawater ponds by inhibiting the content of iron ions. Gram-negative bacteria in the water produce a mucopolysaccharide layer, causing anaerobic biochemical reactions at the bottom and resulting in the accumulation of large amounts of black sludge. Monosilicic acid can destroy the mucopolysaccharides produced by Gram-negative bacteria. The mucopolysaccharides create a physical barrier to oxygen at the bottom of the tank, leading to anaerobic reactions. This forms a substrate structure suitable for the survival of beneficial bacteria, effectively improving the bottom environment.

[0028] 3. Supplementing nitrogen, phosphorus, potassium, calcium and various trace elements helps replenish water nutrients, making the water quality closer to that of natural water bodies. It can also promote the rapid growth of beneficial algae at low temperatures, maintain the clarity and transparency of the water, and reduce eutrophication of the water area.

[0029] 4. Adding certain plant growth hormones, such as gibberellin, indoleacetic acid, and brassinolide, can promote the growth of single-celled algae, such as benthic diatoms. Single-celled algae are the main primary producers in aquatic bodies. In aquaculture, they serve as the foundation of the food chain for farmed animals and can also be directly consumed by them. In the seedling stage of many farmed animals, especially crustaceans and shellfish, single-celled algae serve as the main initial feed and can even determine the success or failure of seedling cultivation. Therefore, stimulating the production of live single-celled algae feed can not only meet the nutritional needs of aquatic animals but also increase dissolved oxygen levels in the water, reduce ammonia nitrogen, balance water quality, inhibit the growth and reproduction of certain pathogens, and reduce the occurrence of diseases. Attached Figure Description

[0030] Fig. 1Water quality picture before using the high-density complex for long-term targeted cultivation of algae in water body;

[0031] Fig. 2 Water quality picture after using the high-density complex for long-term targeted cultivation of algae in water body. DETAILED DESCRIPTION

[0032] The application will be further described below in conjunction with the embodiments and drawings, but it does not constitute a limitation to the application.

[0033] Embodiment 1

[0034] A high-density complex for long-term targeted cultivation of algae in water body, comprising the following components by weight: 4 parts of small material premix (the mass ratio of sodium monosilicate, urea, potassium dihydrogen phosphate, calcium oxide, trace element premix, plant growth hormone and adhesive is 10:3:5:2:45:5:40), 39 parts of sodium chloride, 2 parts of gelatinized starch, 45 parts of attapulgite, 5 parts of cement, 2 parts of titanate coupling agent, 3 parts of molasses and 3 parts of purified water.

[0035] The trace element premix comprises the following components by weight: 4 parts of copper sulfate pentahydrate, 25 parts of ferrous sulfate monohydrate, 35 parts of zinc sulfate monohydrate, 20 parts of manganese sulfate monohydrate, 1 part of cobalt chloride, 1 part of sodium selenite and 5 parts of potassium iodide.

[0036] The plant growth hormone comprises the following components by weight: 10 parts of gibberellin, 45 parts of indole acetic acid and 35 parts of brassinolide.

[0037] The adhesive comprises the following components by weight: 11 parts of dextrin, 8 parts of alpha starch, 5 parts of anionic starch, 8 parts of sodium cellulose, 55 parts of bentonite powder and 6 parts of polyvinyl alcohol.

[0038] The preparation method of the above-mentioned high-density complex for long-term targeted cultivation of algae in water body, comprising the following steps:

[0039] S1, put sodium monosilicate, urea, potassium dihydrogen phosphate, calcium oxide, copper sulfate pentahydrate, ferrous sulfate monohydrate, zinc sulfate monohydrate, manganese sulfate monohydrate, cobalt chloride, sodium selenite, potassium iodide, gibberellin, indole acetic acid, brassinolide, dextrin, alpha starch, anionic starch, sodium cellulose, bentonite powder and polyvinyl alcohol into a 25kg stirrer to stir uniformly, the mixing error is less than 5%, and then automatically package into 1kg / pack small material premix, and then send sodium chloride, gelatinized starch, attapulgite, cement, titanate coupling agent and purified water to the third floor through the elevator and stir uniformly in a 500kg stirrer, the mixing error is less than 5%, and then deliver through the pipeline, and add molasses in the form of spraying when it reaches the second floor, to obtain the mixture one;

[0040] S2, the mixture obtained in step S1 is delivered through a pipeline to the first layer for packaging, and is packaged into 4 kg per package with an error less than 0.1%, and the packaged mixture is put into a mold with a height of 480 mm through a pipeline, and a 1000-ton press is used to extrude the mixture under a constant force of 4 MPa for 3 s, and then the mixture is extruded under a pressure of 17 MPa for 18 s for molding, and then the pressure is released for 3 s to form a product with a volume of 15x15x12 cm 3 After completion, the cracks are monitored by an automatic crack monitoring system, the hardness is measured by a hardness tester, the pressure is 11 MPa, and finally the finished product is sequentially plastic-wrapped, packaged and film-wrapped to obtain the high-density complex for long-acting targeted cultivation of algae in water bodies.

[0041] Example 2

[0042] A high-density complex for long-acting targeted cultivation of algae in water bodies comprises the following components by weight: 3 parts of a premix of small materials (mass ratio of sodium monosilicate, urea, potassium dihydrogen phosphate, calcium oxide, a premix of trace elements, a plant growth regulator and a binder: 8:1:3:1:40:3:30), 35 parts of sodium chloride, 1 part of gelatinized starch, 40 parts of attapulgite, 3 parts of cement, 1 part of a titanate coupling agent, 2 parts of molasses and 1 part of purified water.

[0043] The premix of trace elements comprises the following components by weight: 3 parts of copper sulfate pentahydrate, 23 parts of ferrous sulfate monohydrate, 30 parts of zinc sulfate monohydrate, 16 parts of manganese sulfate monohydrate, 0.5 parts of cobalt chloride, 1 part of sodium selenite and 3 parts of potassium iodide.

[0044] The plant growth regulator comprises the following components by weight: 8 parts of gibberellin, 40 parts of indole acetic acid and 33 parts of brassinolide.

[0045] The binder comprises the following components by weight: 10 parts of dextrin, 7 parts of alpha starch, 4 parts of anionic starch, 7 parts of sodium cellulose, 50 parts of bentonite powder and 5 parts of polypropylene glycol.

[0046] The preparation method of the above-mentioned high-density complex for long-acting targeted cultivation of algae in water bodies comprises the following steps:

[0047] S1, put sodium monosilicate, urea, potassium dihydrogen phosphate, calcium oxide, copper sulfate pentahydrate, ferrous sulfate monohydrate, zinc sulfate monohydrate, manganese sulfate monohydrate, cobalt chloride, sodium selenite, potassium iodide, gibberellin, indole acetic acid, brassinolide, dextrin, alpha starch, anionic starch, sodium cellulose, bentonite powder and polypropylene alcohol into a 25kg stirrer to stir evenly, the mixing error is less than 5%, and then it is automatically packaged into 1kg / pack small material premix, then sodium chloride, gelatinized starch, attapulgite, cement, titanate coupling agent and purified water are transported to the third floor by elevator and stirred in a 500kg stirrer to stir evenly, the mixing error is less than 5%, and then the mixture is transported to the second floor by pipeline, and molasses is added in a spraying manner to obtain mixture one;

[0048] S2, the mixture two obtained in step S1 is transported to the first floor by pipeline for packaging, and the packaging error is less than 0.1%, the packaged mixture is put into a mold with a height of 450mm through a pipeline, a 1000-ton press is used, first, the mixture is extruded under the upper and lower compression constant force of 3MPa for 3s, then the extrusion is maintained under the pressure of 16MPa for 16s, and then the pressure is released for 2s to form a product with a volume of 15*15*12cm 3 After completion, the crack is monitored by an automatic crack monitoring system, the hardness is measured by a hardness tester, the pressure is 10MPa, and finally the finished product is sequentially plastic-wrapped, packaged and film-wrapped to obtain a high-density complex for long-acting and targeted cultivation of algae in water.

[0049] Example 3

[0050] A high-density complex for long-acting and targeted cultivation of algae in water, comprising the following components by weight: small material premix (mass ratio of sodium monosilicate, urea, potassium dihydrogen phosphate, calcium oxide, trace element premix, plant growth regulator and binder: 12:5:7:3:50:7:45) 5 parts, sodium chloride 40 parts, gelatinized starch 3 parts, attapulgite 50 parts, cement 7 parts, titanate coupling agent 3 parts, molasses 4 parts and purified water 5 parts.

[0051] The trace element premix comprises the following components by weight: copper sulfate pentahydrate 6 parts, ferrous sulfate monohydrate 30 parts, zinc sulfate monohydrate 40 parts, manganese sulfate monohydrate 22 parts, cobalt chloride 1.6 parts, sodium selenite 2 parts and potassium iodide 6 parts.

[0052] The plant growth regulator comprises the following components by weight: gibberellin 12 parts, indole acetic acid 48 parts and brassinolide 36 parts.

[0053] The binder comprises the following components by weight: dextrin 12 parts, alpha starch 10 parts, anionic starch 6 parts, sodium cellulose 9 parts, bentonite powder 60 parts and polypropylene alcohol 8 parts.

[0054] The preparation method of the water body long-acting targeted algae cultivation high-density complex comprises the following steps:

[0055] S1, put sodium monosilicate, urea, potassium dihydrogen phosphate, calcium oxide, copper sulfate pentahydrate, ferrous sulfate monohydrate, zinc sulfate monohydrate, manganese sulfate monohydrate, cobalt chloride, sodium selenite, potassium iodide, gibberellin, indole acetic acid, brassinolide, dextrin, alpha starch, anionic starch, sodium cellulose, bentonite powder and polypropylene alcohol into a 25kg stirrer, stir uniformly, the mixing error is less than 5%, automatically sub-pack into 1kg / bag of small material premix, then put sodium chloride, gelatinized starch, attapulgite, cement, titanate coupling agent and purified water into a 500kg stirrer on the third floor through the elevator, stir uniformly, the mixing error is less than 5%, transported to the second floor through the pipeline, and the molasses is added in the form of spraying to obtain mixture one;

[0056] S2, the mixture one obtained in step S1 is transported to the first layer through the pipeline for sub-packaging, and the sub-packaging error is less than 0.1%, the sub-packaged mixture is put into a mold with a height of 500mm through the pipeline, a 1000ton press is used, first extruded under the upper and lower compression constant force of 5MPa for 4s, then extruded under the pressure of 18MPa for 20s for molding, and then the pressure is released for 5s to form a product with a volume of 15*15*12cm 3 ; after completion, the crack is monitored by an automatic crack monitoring system, the hardness is measured by a hardness tester, the pressure is 12.5MPa, and finally the finished product is sequentially plastic-wrapped, packed and film-wrapped to obtain the water body long-acting targeted algae cultivation high-density complex.

[0057] Comparative example 1

[0058] A water body long-acting targeted algae cultivation solid comprises the following components by weight: 3 parts of small material premix (the mass ratio of sodium monosilicate, urea, potassium dihydrogen phosphate, calcium oxide, trace element premix, plant growth hormone and adhesive is 10:3:5:2:45:5:40), 3 parts of gelatinized starch, 85 parts of attapulgite, 3 parts of cement, 2 parts of titanate coupling agent, 3 parts of molasses and 3 parts of purified water.

[0059] The trace element premix comprises the following components by weight: 4 parts of copper sulfate pentahydrate, 25 parts of ferrous sulfate monohydrate, 35 parts of zinc sulfate monohydrate, 20 parts of manganese sulfate monohydrate, 1 part of cobalt chloride, 1 part of sodium selenite and 5 parts of potassium iodide.

[0060] The plant growth hormone comprises the following components by weight: 10 parts of gibberellin, 45 parts of indole acetic acid and 35 parts of brassinolide.

[0061] The adhesive comprises the following components by weight: 11 parts of dextrin, 8 parts of alpha starch, 5 parts of anionic starch, 8 parts of sodium cellulose, 55 parts of bentonite powder and 6 parts of polypropylene alcohol.

[0062] The preparation method of the solid for long-acting targeted cultivation of algae in water bodies comprises the following steps:

[0063] S1, put sodium monosilicate, urea, potassium dihydrogen phosphate, calcium oxide, copper sulfate pentahydrate, ferrous sulfate monohydrate, zinc sulfate monohydrate, manganese sulfate monohydrate, cobalt chloride, sodium selenite, potassium iodide, gibberellin, indole acetic acid, brassinolide, dextrin, alpha starch, anionic starch, sodium cellulose, bentonite powder and polyacrylic alcohol into a 25 kg stirrer to stir uniformly, the mixing error is less than 5%, and then automatically package into 1 kg / pack small material premix, and then put gelatinized starch, attapulgite, cement, titanate coupling agent and purified water into a 500 kg stirrer on the third floor through the elevator to stir uniformly, the mixing error is less than 5%, and then the mixture is transported to the second floor through the pipeline, and molasses is added in a spraying manner to obtain a mixture I;

[0064] S2, the mixture I obtained in step S1 is transported to the first floor through the pipeline for packaging, and the packaging error is less than 0.1%, and then the packaged mixture is put into a mold with a height of 480 mm through the pipeline, a 1000 ton press is used, first, the mixture is extruded under the upper and lower compression constant force of 4 MPa for 3 s, then the mixture is extruded under the pressure of 17 MPa for 18 s, and then the pressure is released for 3 s to form a product with a volume of 15*15*12 cm 3 ; after completion, the cracks are monitored by an automatic crack monitoring system, the hardness is measured by a hardness tester, the pressure is 11 MPa, and finally the finished product is sequentially plastic-wrapped, packaged and film-wrapped to obtain the high-density composite for long-acting targeted cultivation of algae in water bodies.

[0065] Comparative example 2

[0066] A solid for long-acting targeted cultivation of algae in water bodies comprises the following components by weight: 3 parts of small material premix (sodium monosilicate, urea, potassium dihydrogen phosphate, calcium oxide, trace element premix, plant growth regulator and binder in a mass ratio of 10:3:5:2:45:5:40), 85 parts of sodium chloride, 3 parts of gelatinized starch, 3 parts of cement, 3 parts of titanate coupling agent, 3 parts of molasses and 3 parts of purified water.

[0067] The trace element premix comprises the following components by weight: 4 parts of copper sulfate pentahydrate, 25 parts of ferrous sulfate monohydrate, 35 parts of zinc sulfate monohydrate, 20 parts of manganese sulfate monohydrate, 1 part of cobalt chloride, 1 part of sodium selenite and 5 parts of potassium iodide.

[0068] The plant growth regulator comprises the following components by weight: 10 parts of gibberellin, 45 parts of indole acetic acid and 35 parts of brassinolide.

[0069] The adhesive comprises the following components by weight: 11 parts of dextrin, 8 parts of alpha starch, 5 parts of anionic starch, 8 parts of sodium cellulose, 55 parts of bentonite powder, and 6 parts of polyacrylic alcohol.

[0070] The preparation method of the solid for long-acting targeted cultivation of algae in water bodies comprises the following steps:

[0071] S1, put sodium monosilicate, urea, potassium dihydrogen phosphate, calcium oxide, copper sulfate pentahydrate, ferrous sulfate monohydrate, zinc sulfate monohydrate, manganese sulfate monohydrate, cobalt chloride, sodium selenite, potassium iodide, gibberellin, indole acetic acid, brassinolide, dextrin, alpha starch, anionic starch, sodium cellulose, bentonite powder and polyacrylic alcohol into a 25 kg stirrer, stir uniformly, the mixing error is less than 5%, automatically sub-packaged into 1 kg / bag of small material premix, then sodium chloride, gelatinized starch, cement, titanate coupling agent and purified water are transported to the third floor by elevator and stirred uniformly in a 500 kg stirrer, the mixing error is less than 5%, and the mixture is transported to the second floor by pipeline, and molasses is added in a spraying manner to obtain mixture one;

[0072] S2, the mixture one obtained in step S1 is transported to the first floor by pipeline for sub-packaging, sub-packaged into 4 kg / bag, the error is less than 0.1%, and the sub-packaged mixture is put into a mold with a height of 480 mm by pipeline, a 1000 ton press is used, first extruded under the upper and lower compression constant force of 4 MPa for 3 s, then extruded under the pressure of 17 MPa for 18 s, and then released for 3 s to form a product with a volume of 15x15x12cm 3 ; after completion, the crack is monitored by an automatic crack monitoring system, the hardness is measured by a hardness tester, the pressure is 11 MPa, and finally the finished product is sequentially plastic-wrapped, packaged and film-wrapped to obtain the solid for long-acting targeted cultivation of algae in water bodies.

[0073] Test Example 1

[0074] The high-density complex for long-acting targeted cultivation of algae in water bodies prepared in Examples 1-3 and the solid for long-acting targeted cultivation of algae in water bodies prepared in Comparative Examples 1-2 are put into water, and the weight change from the 1st day to the 42nd day is observed, and the results are shown in Table 1.

[0075] Table 1 Weight change

[0076]

[0077]

[0078] Note: not shaped means that cracks occur immediately after production.

[0079] As shown in Table 1, the water long-term targeted cultivated algal high-density complex prepared by the method provided by the present application can last for 41-45 days in water, while the water long-term targeted cultivated algal solid prepared by the comparative example can only last for 1-2 days in water.

[0080] Test Example 2

[0081] The water long-term targeted cultivated algal high-density complex prepared in Example 1 was put into water to observe the effect of the functional substance therein, and the effect in water is shown in Figs. 1-2 .

[0082] As shown in Table 1, the water long-term targeted cultivated algal high-density complex prepared by the method provided by the present application can last for 41-45 days in water, while the water long-term targeted cultivated algal solid prepared by the comparative example can only last for 1-2 days in water. Figs. 1-2 It can be seen that after the water long-term targeted cultivated algal high-density complex provided by the present application is used, the water quality changes from clear to turbid, which shows that the water long-term targeted cultivated algal high-density complex can release the functional substance sustainably and stably, keep the water clear and transparent, and reduce the eutrophication of water area.

[0083] Although the specific embodiments of the present application are described in detail with reference to the accompanying drawings, it should not be understood as limiting the protection scope of the present patent. Various modifications and changes made by those skilled in the art within the scope described in the claims are still within the protection scope of the present patent.

Claims

1. A long-term targeted cultivation of algal high-density complex in water body, characterized in that, The small material premix agent comprises the following components in parts by weight: sodium monosilicate 8-12 parts, urea 1-5 parts, potassium dihydrogen phosphate 3-7 parts, calcium oxide 1-3 parts, trace element premix agent 40-50 parts, plant growth hormone 3-7 parts, and adhesive 30-45 parts; the trace element premix agent comprises the following components in parts by weight: copper sulfate pentahydrate 3-6 parts, ferrous sulfate monohydrate 23-30 parts, zinc sulfate monohydrate 30-40 parts, manganese sulfate monohydrate 16-22 parts, cobalt chloride 0.5-1.6 parts, sodium selenite 1-2 parts, and potassium iodide 3-6 parts.

2. The high-density complex for long-term targeted cultivation of algae in water as described in claim 1, characterized in that, The small material premix agent comprises the following components in parts by weight: sodium monosilicate 8-12 parts, urea 1-5 parts, potassium dihydrogen phosphate 3-7 parts, calcium oxide 1-3 parts, trace element premix agent 40-50 parts, plant growth hormone 3-7 parts, and adhesive 30-45 parts; the trace element premix agent comprises the following components in parts by weight: copper sulfate pentahydrate 3-6 parts, ferrous sulfate monohydrate 23-30 parts, zinc sulfate monohydrate 30-40 parts, manganese sulfate monohydrate 16-22 parts, cobalt chloride 0.5-1.6 parts, sodium selenite 1-2 parts, and potassium iodide 3-6 parts.

3. The high-density complex for long-term targeted cultivation of algae in water as described in claim 1, characterized in that, The plant growth hormone comprises the following components in parts by weight: gibberellin 8-12 parts, indole acetic acid 40-48 parts, and brassinolide 33-36 parts.

4. The high-density complex for long-term targeted cultivation of algae in water as described in claim 1, characterized in that, The adhesive comprises the following components in parts by weight: dextrin 10-12 parts, alpha starch 7-10 parts, anionic starch 4-6 parts, sodium cellulose 7-9 parts, bentonite powder 50-60 parts, and polypropylene glycol 5-8 parts.

5. The method for preparing a long-term targeted algal cultivation complex of high density in a water body according to any one of claims 1-4, characterized in that, The method comprises the following steps: S1, the small material premix agent is divided into packages, and then the small material premix agent, sodium chloride, gelatinized starch, attapulgite, cement, titanate coupling agent and purified water are stirred uniformly, and then molasses is added by spraying to obtain a mixture I; S2, the mixture I obtained in step S1 is divided into packages, and then is pressed into a shape, and cracks and hardness are detected, and then is sequentially plastic-wrapped, packaged and film-wrapped to obtain a high-density composite for long-acting target cultivation of algae in water.

6. The method for preparing a high-density complex for long-term targeted cultivation of algae in water as described in claim 5, characterized in that, In step S1, the small material premix agent is divided into 0.5-1.5 kg per package.

7. The method for preparing a high-density complex for long-term targeted cultivation of algae in water as described in claim 5, characterized in that, In step S2, the mixture obtained in step S2 is divided into 3.5-4.5 kg per package, and then put into a mold with a height of 450-500 mm, extruded under a constant force of 3-5 MPa for 3-4 s, and then kept extruding under a pressure of 16-18 MPa for 16-20 s to form a high-density composite body with a volume of 15 x 15 x 12 cm 3 .

8. The method for preparing a high-density complex for long-term targeted cultivation of algae in water as described in claim 5, characterized in that, In step S2, an automatic crack monitoring system is used to monitor cracks, and a hardness tester is used to determine hardness, and the pressure is 10-12.5 MPa.

Images