A long-acting oxygenating agent for aquaculture water, its preparation method and application

Abstract

This invention provides a long-acting oxygenating agent for aquaculture water, its preparation method, and its application, belonging to the field of aquaculture technology. It comprises the following weight components: 5-20 parts sodium percarbonate, 65-85 parts sodium perborate, 5-15 parts sodium tetraborate pentahydrate, 0.5-2 parts polyethylene glycol, and 0.2-0.5 parts magnesium stearate. After the oxygenating agent is added to the water, sodium percarbonate rapidly dissolves and releases oxygen, achieving a rapid oxygenation effect. Sodium tetraborate pentahydrate has a higher solubility than sodium perborate, rapidly dissolving and hydrolyzing in water to form a certain concentration of boric acid. This inhibits the dissolution and hydrolysis process of sodium perborate to some extent, slowing down the oxygen release rate and significantly increasing the oxygenation time and effectiveness of the oxygenating agent. The oxygenation time is extended to 16-36 hours, eliminating the need for workers to add oxygenating agent again at night, reducing aquaculture costs, improving the stability and sustainability of the aquaculture system, and increasing the economic benefits of aquaculture.

Description

Technical Field

[0001] This invention belongs to the field of aquaculture technology, specifically relating to a long-acting oxygenating agent for aquaculture water, its preparation method, and its application. Background Technology

[0002] Under extreme high temperatures in summer, the dissolved oxygen content in aquaculture water decreases, and the microorganisms at the bottom of the water become more active, increasing oxygen consumption and making the ponds prone to oxygen deficiency and fish kill. This is especially true at night, when patrolling the ponds becomes more difficult. Stable and long-lasting oxygenating agents can release oxygen in the water and maintain their effect for a longer period of time. This not only prevents fish from suffocating and dying due to insufficient oxygen, but also reduces the need for frequent manual operations, improves the stability and sustainability of the aquaculture system, lowers the operating costs of aquaculture, and increases the economic benefits of the aquaculture industry.

[0003] Currently, commonly used chemical oxygenators in aquaculture are mainly sodium percarbonate, percarbonamide, and calcium peroxide. Sodium percarbonate and percarbonamide typically release oxygen for 0.5-2 hours, and even those with slow-release technology only last 5-8 hours. Calcium peroxide releases oxygen slowly and ineffectively in dealing with acute hypoxia. Existing chemical oxygenators are generally divided into three types: the first is fast-acting oxygenators, which can be used for emergency hypoxia, with a duration of 0.5-4 hours, and a few reaching 5-8 hours, but cannot guarantee oxygen-free ponds overnight, requiring frequent pond inspections; the second is long-acting oxygenators, mainly calcium peroxide products, with an oxygen release time of 48-72 hours, but a small oxygen release, only suitable for preventing hypoxia; the third is oxygenation aids, using surfactants, water treatment agents, organic acids, and bacteria, which can enhance oxygenation but cannot directly solve hypoxia caused by extreme weather. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a long-lasting oxygenating agent for aquaculture water, its preparation method, and its application. Utilizing the different solubilities of sodium perborate (NaBO3·4H2O) and sodium tetraborate pentahydrate (Na2B4O7·5H2O), sodium tetraborate pentahydrate inhibits the hydrolysis reaction of sodium perborate, thereby further extending the oxygen release rate of sodium perborate. This agent can not only be used for emergency oxygen depletion but also continuously release oxygen for 16-36 hours, eliminating the need for workers to add oxygenating agents again at night, thus improving the stability and sustainability of the aquaculture system.

[0005] To achieve the above objectives, this solution first provides a long-lasting oxygenating agent for aquaculture water, including sodium percarbonate, sodium perborate, sodium tetraborate pentahydrate polyethylene glycol, and magnesium stearate.

[0006] Preferably, the weight components of sodium percarbonate, sodium perborate, sodium tetraborate pentahydrate, polyethylene glycol, and magnesium stearate are 5-20 parts, 65-85 parts, 5-15 parts, 0.5-2 parts, and 0.2-0.5 parts, respectively.

[0007] Based on a general inventive concept, this solution also provides a method for preparing a long-acting oxygenating agent for aquaculture water, comprising the following steps:

[0008] S1. Take sodium percarbonate, sodium perborate, sodium tetraborate pentahydrate, polyethylene glycol and magnesium stearate, and put them into a two-dimensional mixer in proportion and mix them evenly to obtain a mixture.

[0009] S2. The mixture obtained in S1 is sieved and compressed into tablets to obtain granular long-acting oxygenating agent.

[0010] Preferably, the sieve aperture size in step S2 is 40 mesh.

[0011] Based on a general inventive concept, this solution also provides an application of a long-acting oxygenating agent for aquaculture water in the long-term oxygenation of aquaculture water.

[0012] Preferably, the dosage of the long-acting oxygenating agent used in aquaculture water is 5 kg / mu.

[0013] The working mechanism of the long-acting oxygenating agent in this solution is as follows:

[0014] Sodium percarbonate primarily functions to rapidly release oxygen in the initial stage of oxygenation by oxygen-enhancing tablets. After being introduced into the water, sodium percarbonate quickly dissolves and releases oxygen, achieving a rapid oxygenation effect. It is used for emergency treatment of oxygen deficiency in aquaculture water. Sodium perborate primarily functions to slowly and steadily release oxygen through hydrolysis in the middle and later stages of oxygenation by oxygen-enhancing tablets, maintaining dissolved oxygen in the aquaculture water. Sodium perborate is slightly soluble in water, and its aqueous solution readily releases active oxygen. The byproduct sodium metasilicate further decomposes into boric acid, which has a disinfecting and bactericidal effect, inhibits the growth of microorganisms at the bottom of the pond, and improves the bottom environment of the aquaculture water.

[0015] Sodium tetraborate pentahydrate has a higher solubility than sodium perborate. It dissolves rapidly in water and hydrolyzes to form a certain concentration of boric acid, which inhibits the hydrolysis reaction of sodium perborate, controls the rate at which sodium perborate releases oxygen, and also inhibits the water absorption and swelling of sodium perborate that leads to the disintegration of oxygen-enhancing particles. It can also act as a stabilizer for sodium perborate, maintaining the stability of sodium perborate in oxygen-enhancing agents. It effectively inhibits the dissolution and hydrolysis process of sodium perborate, slows down the rate of oxygen release from sodium perborate, and greatly improves the oxygen release time and effectiveness of oxygen-enhancing agents, extending the oxygen release time to 16-36 hours.

[0016] The reaction formula for the hydrolysis of sodium perborate is: 2NaBO3·4H2O→NaBO2+O2↑+3H2O;

[0017] The hydrolysis reaction of sodium tetraborate pentahydrate is: B4O7 2- +5H₂O=2H₃BO₃+2H₂BO₃ - Borax dissolves in water to produce equal amounts of conjugate acid (H3BO3) and conjugate base (H2BO3). - ), forming a buffer solution.

[0018] Polyethylene glycol is used as a binder in the granulation of oxygenating agents, while magnesium stearate is used as a release agent in the granulation of oxygenating agents.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) This solution uses a compound oxygenation formula, fast-acting oxygenation component sodium percarbonate and slow-release oxygen components (sodium perborate and sodium tetraborate pentahydrate) in combination. It can not only be used for emergency oxygen deficiency, but also continuously release oxygen for 16-36 hours. There is no need for workers to add oxygenation agent again at night, which reduces breeding costs, improves the stability and sustainability of the breeding system, and improves the economic benefits of the breeding industry.

[0021] (2) The oxygen release rate of sodium perborate can be further extended by taking advantage of the different solubilities of sodium perborate and sodium tetraborate pentahydrate, as well as the fact that sodium tetraborate pentahydrate can inhibit the hydrolysis reaction of sodium perborate. Detailed Implementation

[0022] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the invention. Any modifications or substitutions made to the methods, steps, or conditions of the present invention without departing from the spirit and essence of the invention are within the scope of the invention.

[0023] Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art; unless otherwise specified, the reagents used in the embodiments are all commercially available.

[0024] Example 1

[0025] Preparation of long-acting oxygenating agents for aquaculture water

[0026] S1. 20 parts of sodium percarbonate; 65 parts of sodium perborate; 13 parts of sodium tetraborate pentahydrate; 1.8 parts of polyethylene glycol; and 0.2 parts of magnesium stearate are added to a two-dimensional mixer and mixed evenly to obtain a mixture.

[0027] S2. Pass the above mixture through a 40-mesh sieve and compress it into tablets to obtain granular long-acting oxygenating agent.

[0028] Example 2

[0029] Preparation of long-acting oxygenating agents for aquaculture water

[0030] S1. 20 parts of sodium percarbonate; 70 parts of sodium perborate; 8 parts of sodium tetraborate pentahydrate; 1.8 parts of polyethylene glycol; and 0.2 parts of magnesium stearate are added to a two-dimensional mixer and mixed evenly to obtain a mixture.

[0031] S2. Pass the above mixture through a 40-mesh sieve and compress it into tablets to obtain granular long-acting oxygenating agent.

[0032] Example 3

[0033] Preparation of long-acting oxygenating agents for aquaculture water

[0034] S1. 10 parts sodium percarbonate; 75 parts sodium perborate; 13.5 parts sodium tetraborate pentahydrate; 1.2 parts polyethylene glycol; and 0.3 parts magnesium stearate are added to a two-dimensional mixer and mixed evenly to obtain a mixture.

[0035] S2. Pass the above mixture through a 40-mesh sieve and compress it into tablets to obtain granular long-acting oxygenating agent.

[0036] Example 4

[0037] Preparation of long-acting oxygenating agents for aquaculture water

[0038] S1. 10 parts sodium percarbonate; 80 parts sodium perborate; 8.5 parts sodium tetraborate pentahydrate; 1.2 parts polyethylene glycol; and 0.3 parts magnesium stearate are added to a two-dimensional mixer and mixed evenly to obtain a mixture.

[0039] S2. Pass the above mixture through a 40-mesh sieve and compress it into tablets to obtain granular long-acting oxygenating agent.

[0040] Example 5

[0041] Preparation of long-acting oxygenating agents for aquaculture water

[0042] S1. Sodium percarbonate 5 parts; sodium perborate 80 parts; sodium tetraborate pentahydrate 14 parts; polyethylene glycol 0.6 parts; magnesium stearate 0.4 parts are added into a two-dimensional mixer and mixed evenly to obtain a mixture.

[0043] S2. Pass the above mixture through a 40-mesh sieve and compress it into tablets to obtain granular long-acting oxygenating agent.

[0044] Comparative Example 1

[0045] S1. Add 85% sodium percarbonate, 12.8% sodium sulfate, 2% polyethylene glycol, and 0.2% magnesium stearate by weight into a two-dimensional mixer and mix evenly to obtain a mixture.

[0046] S2. Pass the above mixture through a 40-mesh sieve and compress it into tablets to obtain granular long-acting oxygenating agent.

[0047] Comparative Example 2

[0048] S1. Add 85% sodium perborate, 12.8% sodium sulfate, 2% polyethylene glycol, and 0.2% magnesium stearate by weight into a two-dimensional mixer and mix evenly to obtain a mixture.

[0049] S2. Pass the above mixture through a 40-mesh sieve and compress it into tablets to obtain granular long-acting oxygenating agent.

[0050] Comparative Example 3

[0051] S1. 20 parts of sodium percarbonate, 65 parts of sodium perborate, 1.8 parts of polyethylene glycol, and 0.2 parts of magnesium stearate are added to a two-dimensional mixer and mixed evenly to obtain a mixture.

[0052] S2. Pass the above mixture through a 40-mesh sieve and compress it into tablets to obtain granular long-acting oxygenating agent.

[0053] Comparative Example 4

[0054] Preparation of long-acting oxygenating agents for aquaculture water

[0055] S1. 20 parts of sodium percarbonate, 13 parts of sodium tetraborate pentahydrate, 1.8 parts of polyethylene glycol, and 0.2 parts of magnesium stearate are added into a two-dimensional mixer and mixed evenly to obtain a mixture.

[0056] S2. Pass the above mixture through a 40-mesh sieve and compress it into tablets to obtain granular long-acting oxygenating agent.

[0057] Experimental Example 1

[0058] The oxygenating agents prepared in the examples and comparative examples were investigated to assess their oxygenation effects in simulated ponds.

[0059] One granule (approximately 2g) of the oxygenating agent prepared in each of Examples 1-5 and Comparative Examples 1-2 was added to a glass tank containing 20L of pond water. The water temperature was controlled at 27℃. A small aeration device was added to the tank to simulate flowing water. The dissolved oxygen in the water was observed, tested, and recorded at 0, 1, 2, 4, 8, 16, 24, and 36 hours. The specific experimental data are shown in Table 1 below.

[0060] Table 1. Oxygenation effect of oxygenating agents prepared in Examples 1-5 and Comparative Examples 1-2

[0061]

[0062] The results showed that, compared with Comparative Examples 1 and 2, Examples 1, 2, 3, 4, and 5 combined the ability to rapidly increase oxygen in the early stage with stable oxygen release in the middle and late stages, while also prolonging the oxygen release time of the oxygenating agent.

[0063] Experimental Example 2

[0064] The oxygenating effects of the oxygenating agents prepared in the examples and comparative examples were investigated in actual ponds.

[0065] During the sustained high temperatures of summer, an experiment was conducted in densely populated fishponds, with an application rate of 5 kg / mu. The specific experimental results are shown in Figure 2 below:

[0066] Table 2. Effects of oxygenating agents prepared in the examples and comparative examples on fish populations.

[0067]

[0068]

[0069] The results showed that, compared with Comparative Example 1, the formulations of Examples 1, 3, and 5 added slow-release oxygenating components, which greatly increased the oxygen release time of the oxygenating agent, reduced the frequency of worker pond inspections and oxygenating agent use, and lowered aquaculture costs.

[0070] Furthermore, the slow-release effect of the oxygenating agent prepared in this scheme cannot be achieved without the absence of sodium tetraborate pentahydrate or sodium perborate. Sodium tetraborate pentahydrate and sodium perborate have a synergistic oxygenating effect.

[0071] The above description is merely a preferred embodiment of the present invention, and the scope of protection of the present invention is not limited to the above embodiments. For those skilled in the art, any improvements and modifications obtained without departing from the technical concept of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A long-acting oxygenating agent for aquaculture water, characterized in that, By weight, it includes 5-20 parts sodium percarbonate, 65-85 parts sodium perborate, 5-15 parts sodium tetraborate pentahydrate, 0.5-2 parts polyethylene glycol, and 0.2-0.5 parts magnesium stearate.

2. A method for preparing a long-acting oxygenating agent for aquaculture water as described in claim 1, characterized in that, Includes the following steps: S1. Take sodium percarbonate, sodium perborate, sodium tetraborate pentahydrate, polyethylene glycol and magnesium stearate, and put them into a two-dimensional mixer in proportion and mix them evenly to obtain a mixture. S2. The mixture obtained in S1 is sieved and compressed into tablets to obtain granular long-acting oxygenating agent.

3. The method for preparing the long-acting oxygenating agent for aquaculture water according to claim 2, characterized in that, The sieve aperture size in step S2 is 40 mesh.

4. The application of a long-acting oxygenating agent for aquaculture water as described in claim 1, or a long-acting oxygenating agent for aquaculture water prepared by any one of the preparation methods described in claims 2-3, in the long-term oxygenation of aquaculture water.

5. The application according to claim 4, characterized in that, The dosage of the long-acting oxygenating agent used in aquaculture water is 5 kg / mu.

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