Hydrodynamic element for improving water quality
Hydraulic agents, through the synergistic effect of compound substances, have solved the problem of water quality deterioration in aquaculture, achieving low-cost, eco-friendly water quality improvement and promoting the healthy growth of aquatic products.
Patent Information
- Application Number
- CN202610143949.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-02
- Publication Date
- 2026-04-21
AI Technical Summary
In existing aquaculture, the deterioration of water quality in aquaculture ponds leads to slow growth and decreased immunity of aquatic products. Furthermore, traditional physical water exchange and chemical disinfection methods are costly or disrupt the ecological balance.
Hydraulic acid, which uses compound oligosaccharide preparations, compound enzyme preparations, compound bacterial agents, modified nano-sized titanium dioxide, zeolite, activated carbon, attapulgite, calcium carbonate and magnesium carbonate, improves water quality through the synergistic effect of physical adsorption and biodegradation.
It effectively improves the water quality of aquaculture ponds, reduces costs, does not disrupt the ecological balance, increases the yield and survival rate of aquatic products, and promotes healthy growth.
Smart Images
Figure CN121894836A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of aquaculture water quality improvement, specifically a water-based agent for water quality improvement. Background Technology
[0002] Aquaculture is an important way to obtain aquatic products. Currently, freshwater aquaculture is mostly carried out in natural or artificial ponds. In order to improve the yield and quality of aquatic products, a large amount of feed, nutritional fortifiers, and other auxiliary agents are added to the ponds. During the growth process, the excrement of aquatic products also accumulates continuously. Although farmers clean the pond water regularly, some fine particulate matter remains, leading to the gradual deterioration of water quality, resulting in problems such as eutrophication, reduced dissolved oxygen, and the proliferation of harmful microorganisms. These problems not only affect the normal growth and development of aquatic products, causing slowed growth, decreased immunity, and increased risk of disease, but in severe cases, they can even cause large-scale mortality, resulting in significant economic losses for farmers. Existing water quality improvement methods mostly rely on physical water exchange and chemical disinfection. However, physical water exchange is costly and easily limited by water source conditions. Although chemical agents can play a certain role in purification in the short term, long-term use will disrupt the ecological balance of the water body, leading to a reduction in beneficial microorganisms and affecting the quality of aquatic products. Summary of the Invention
[0003] This invention provides a water quality improvement agent to address the deficiencies in the prior art.
[0004] This invention is achieved through the following technical solution: A water quality improvement agent comprises the following substances in parts by weight: 8-10 parts of compound oligosaccharide preparation, 4-6 parts of compound enzyme preparation, 3-6 parts of compound bacterial agent, 4-6 parts of modified nano-sized titanium dioxide, 15-20 parts of zeolite, 6-10 parts of activated carbon, 12-15 parts of attapulgite, 2-4 parts of calcium carbonate, and 2-4 parts of magnesium carbonate.
[0005] The water quality improvement agent described above, comprising the following components in parts by weight: 8-10 parts of chlorophyll oligosaccharide, 4-6 parts of mannan oligosaccharide, and 4-6 parts of xylooligosaccharide.
[0006] The water quality improvement agent described above, comprising the following components by weight: 5-6 parts laccase, 6-8 parts phospholipase, 3-5 parts lipase, 4-5 parts cellulase, and 2-3 parts protease.
[0007] The above-mentioned water quality improvement agent, a compound microbial agent, comprises the following components in parts by weight: 4-6 parts of Aspergillus niger, 3-5 parts of Candida albicans, 2-3 parts of Pseudomonas, and 4-6 parts of Lactobacillus.
[0008] The modified nano-sized titanium dioxide preparation method of the above-mentioned water quality improvement agent is as follows: adding nano-sized titanium dioxide powder into an ethanol solution of silane coupling agent, heating and stirring to react, centrifuging after the reaction is completed, washing the solid obtained after separation with ethanol and drying to obtain modified nano-sized titanium dioxide.
[0009] The above-mentioned water quality improvement agent, a hydro-enhancing agent, has a silane coupling agent ethanol solution concentration of 0.5-1.0 mol / L, the silane coupling agent is 3-aminopropyltriethoxysilane, and the mass ratio of nano-sized titanium dioxide to the silane coupling agent is 10-15:1.
[0010] As described above, a water quality improvement agent, nano-sized titanium dioxide powder, is added to an ethanol solution of a silane coupling agent and reacted in a sealed reactor at a temperature of 60-70°C. During the reaction, ethanol is cooled and vaporized by reflux condensation. The stirring speed is 150-200 r / min, and the reaction time is 2-3 h. Nitrogen gas is introduced for protection during the reaction. The solid obtained after centrifugation is washed with ethanol 3-4 times and then dried at a drying temperature of 60-70°C for 1.5-2 h.
[0011] The preparation method of the water quality improvement agent described above includes the following steps: Step 1: Weigh out the following ingredients according to the specified proportions: compound oligosaccharide preparation, compound enzyme preparation, compound microbial agent, modified nano-sized titanium dioxide, zeolite, activated carbon, attapulgite, calcium carbonate, and magnesium carbonate. Step 2: Mix the compound oligosaccharide preparation, compound enzyme preparation, compound bacterial agent, zeolite, activated carbon, attapulgite, calcium carbonate, and magnesium carbonate, then pulverize them and add modified nano-sized titanium dioxide. After mixing, package the mixture to obtain the water-enhancing agent for water quality improvement.
[0012] As described above, the water-enhancing agent used for water quality improvement is pulverized and passed through a 200-mesh sieve in step two for later use. If there are still residual substances on the sieve, pulverization continues until all substances pass through the sieve.
[0013] As described above, the water-enhancing agent used for water quality improvement should be applied at a dosage of 100-250 g / m3. Before application, it should be added to 10 times its weight of water, mixed and stirred at a speed of 50-100 r / min for 2-3 hours, and then evenly sprayed into the aquaculture pond.
[0014] The advantages of this invention are: This invention utilizes multiple substances in synergy to improve the water quality of aquaculture ponds through physical adsorption, biodegradation, and other combined effects. Compared with traditional physical water exchange and chemical disinfection methods, this invention has lower operating costs, does not disrupt the ecological balance of the water body, and can stably improve water quality, thereby increasing the yield of aquatic products. It provides a safe and reliable water-enhancing agent for aquaculture. The compound oligosaccharide formulation of this invention uses a combination of chlorophyll oligosaccharides, mannan oligosaccharides, and xylooligosaccharides. Chlorophyll oligosaccharides, as a natural marine bioactive substance, not only have good biocompatibility but also efficiently promote the growth and reproduction of beneficial microorganisms in water, providing high-quality carbon and energy sources for the microorganisms in the compound microbial agent, enhancing their metabolic activity, and thus accelerating the decomposition and transformation of organic matter in water. Mannan oligosaccharides can specifically bind to certain pathogenic microorganisms in water, such as Escherichia coli and Salmonella, preventing them from colonizing the intestines of aquatic organisms, reducing the occurrence of diseases, and also regulating the microecological environment of the water body, improving the self-purification capacity of the water body. Xylooligosaccharides, as a functional oligosaccharide, have the effect of promoting growth. The long-term effects of these oligosaccharides stimulate the proliferation of beneficial bacteria. During their growth, these bacteria produce a large amount of organic acids, antimicrobial peptides, and other substances, effectively inhibiting the growth of harmful bacteria in the water. Furthermore, xylooligosaccharides can promote the establishment of beneficial intestinal flora in aquatic animals, indirectly improving the aquaculture environment. The synergistic effect of these three oligosaccharides can also adsorb some suspended particulate matter and toxic and harmful substances in the water, such as heavy metal ions, through the active groups on their molecular surface, further enhancing the water purification effect. At the same time, they can also promote the rapid proliferation of Aspergillus niger, Candida albicans, Pseudomonas aeruginosa, and Lactobacillus in the compound bacterial agent, enhancing the activity and competitiveness of the bacterial flora, thereby effectively inhibiting the growth and reproduction of harmful microorganisms in the water and maintaining the microecological balance of the water. The compound enzyme preparation of this invention uses laccase, phospholipase, lipase, cellulase, and protease in combination. Laccase, as a polyphenol oxidase, can efficiently catalyze the oxidative decomposition of recalcitrant organic pollutants such as phenols and aromatic amines in water, converting them into harmless small molecules and reducing the chemical oxygen demand (COD) of the water. Phospholipase can specifically hydrolyze phospholipids contained in animal and plant remains, feed residues, etc., in water, releasing fatty acids and glycerol. These decomposition products can be further utilized by the microorganisms in the compound bacterial agent, reducing the accumulation of lipids in the water and preventing the aggravation of eutrophication. Lipase targets fatty pollutants in the water, decomposing them into glycerol and free fatty acids, providing a carbon source for microbial metabolism, and effectively reducing... The five enzymes work synergistically to decompose complex organic matter in water, such as dead branches and leaves, and algal cell walls, into fermentable sugars. This not only provides nutrients for the microbial community in the compound microbial agent but also reduces the content of cellulose suspended solids in the water. Protease can decompose protein pollutants in the water, such as fish and shrimp excrement and dead biological remains, into amino acids and small peptides. These substances are both nitrogen sources for microbial growth and can be absorbed and utilized by aquatic organisms, achieving the recycling of materials. These five enzyme preparations work together to decompose complex organic matter in the water from different angles, forming a highly efficient enzymatic hydrolysis system. This provides sufficient nutrient substrates for the subsequent biodegradation process of the compound microbial agent, improving the treatment efficiency of water purification. The modified nano-sized titanium dioxide in this invention has excellent photocatalytic performance under light irradiation, and can convert some organic pollutants and ammonia nitrogen in water into harmless carbon dioxide and water. At the same time, after being modified by silane coupling agent, it has better compatibility and dispersibility with other components, and can give full play to its photocatalytic oxidation effect, further improving the water purification effect. In this invention, the three mineral materials zeolite, activated carbon, and attapulgite exhibit strong physical adsorption capacity due to their rich pore structure and large specific surface area. They can quickly adsorb suspended particulate matter, pigments, odor substances, and some heavy metal ions in water, reduce water turbidity, and improve water transparency. Furthermore, when the various substances are mixed before use, they can play a certain role in carrying and protecting the components such as compound bacterial agents, compound enzyme preparations, and compound oligosaccharide preparations, providing a good carrier for their slow release and continuous effect in water. In this invention, calcium carbonate and magnesium carbonate can adjust the pH value of the water body, keeping it in a slightly alkaline range suitable for the growth of aquatic products, while supplementing the water body with calcium and magnesium elements to promote the growth and development of aquatic products. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the survival rate in the verification test of the present invention; Figure 2 This is a schematic diagram of the average weight of a single tail in the verification test of this invention. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0018] A water quality improvement agent comprises the following substances in parts by weight: 8-10 parts of compound oligosaccharide preparation, 4-6 parts of compound enzyme preparation, 3-6 parts of compound bacterial agent, 4-6 parts of modified nano-sized titanium dioxide, 15-20 parts of zeolite, 6-10 parts of activated carbon, 12-15 parts of attapulgite, 2-4 parts of calcium carbonate, and 2-4 parts of magnesium carbonate.
[0019] Specifically, the compound oligosaccharide preparation described in this embodiment includes the following substances in parts by weight: 8-10 parts of chlorophyll oligosaccharide, 4-6 parts of mannan oligosaccharide, and 4-6 parts of xylooligosaccharide.
[0020] Specifically, the compound enzyme preparation described in this embodiment includes the following components in parts by weight: 5-6 parts laccase, 6-8 parts phospholipase, 3-5 parts lipase, 4-5 parts cellulase, and 2-3 parts protease.
[0021] More specifically, the compound microbial agent described in this embodiment includes the following substances in parts by weight: 4-6 parts of Aspergillus niger, 3-5 parts of Candida albicans, 2-3 parts of Pseudomonas, and 4-6 parts of Lactobacillus.
[0022] More specifically, the modified nano-sized titanium dioxide preparation method described in this embodiment is as follows: nano-sized titanium dioxide powder is added to an ethanol solution of silane coupling agent, heated and stirred to react, centrifuged after the reaction is completed, and the solid obtained after separation is washed with ethanol and dried to obtain modified nano-sized titanium dioxide.
[0023] More specifically, in this embodiment, the concentration of the silane coupling agent ethanol solution is 0.5-1.0 mol / L, the silane coupling agent is 3-aminopropyltriethoxysilane, and the mass ratio of nano-sized titanium dioxide to the silane coupling agent is 10-15:1.
[0024] Furthermore, in this embodiment, the nano-sized titanium dioxide powder with ethanol solution of silane coupling agent is added to a sealed reactor for reaction at a temperature of 60-70°C. During the reaction, ethanol is cooled and vaporized by reflux condensation. The stirring speed is 150-200 r / min, and the reaction time is 2-3 h. Nitrogen gas is introduced for protection during the reaction. The solid obtained after centrifugation is washed with ethanol 3-4 times and then dried at a drying temperature of 60-70°C for 1.5-2 h.
[0025] Furthermore, the preparation method of this embodiment includes the following steps: Step 1: Weigh out the following ingredients according to the specified proportions: compound oligosaccharide preparation, compound enzyme preparation, compound microbial agent, modified nano-sized titanium dioxide, zeolite, activated carbon, attapulgite, calcium carbonate, and magnesium carbonate. Step 2: Mix the compound oligosaccharide preparation, compound enzyme preparation, compound bacterial agent, zeolite, activated carbon, attapulgite, calcium carbonate, and magnesium carbonate, then pulverize them and add modified nano-sized titanium dioxide. After mixing, package the mixture to obtain the water-enhancing agent for water quality improvement.
[0026] Furthermore, in step two of this embodiment, the pulverized material is passed through a 200-mesh sieve for later use. If there is still residual material on the sieve, pulverization continues until all the material passes through the sieve.
[0027] Furthermore, in this embodiment, the dosage is 100-250 g / m³. Before application, it is added to 10 times its weight of water and mixed at 50-100 rpm for 2-3 hours before being evenly sprayed into the aquaculture pond. The dosage is selected based on the water quality of the aquaculture pond. For lightly polluted water, a dosage of 100-150 g / m³ is used; for moderately polluted water, the dosage is controlled at 150-200 g / m³; and for severely polluted water, a dosage of 200-250 g / m³ is chosen to achieve targeted improvement.
[0028] Example 1 Step 1: Weigh out 8 parts of compound oligosaccharide preparation, 4 parts of compound enzyme preparation, 3 parts of compound bacterial agent, 4 parts of modified nano-sized titanium dioxide, 15 parts of zeolite, 6 parts of activated carbon, 12 parts of attapulgite, 2 parts of calcium carbonate, and 2 parts of magnesium carbonate according to the specified ratio. The compound oligosaccharide preparation includes the following substances in parts by weight: 8 parts of chlorella oligosaccharide, 4 parts of mannan oligosaccharide, and 4 parts of xylooligosaccharide; The compound enzyme preparation includes the following components in parts by weight: 5 parts laccase, 6 parts phospholipase, 3 parts lipase, 4 parts cellulase, and 2 parts protease. The compound microbial agent includes the following components in parts by weight: 4 parts Aspergillus niger, 3 parts Candida albicans, 2 parts Pseudomonas, and 4 parts Lactobacillus. The modified nano-sized titanium dioxide preparation method is as follows: nano-sized titanium dioxide powder is added to an ethanol solution of silane coupling agent with a concentration of 0.5 mol / L and heated to 60°C. The mass ratio of nano-sized titanium dioxide to silane coupling agent is 15:1. During the reaction, ethanol is vaporized by reflux cooling. The stirring speed is 150 r / min and the reaction time is 3 h. Nitrogen gas is introduced for protection during the reaction. After the reaction is completed, the solid is separated by centrifugation. The solid obtained after centrifugation is washed three times with ethanol and then dried at a drying temperature of 60°C for 2 h to obtain modified nano-sized titanium dioxide. Step 2: Mix the compound oligosaccharide preparation, compound enzyme preparation, compound bacterial agent, zeolite, activated carbon, attapulgite, calcium carbonate, and magnesium carbonate, then pulverize and pass through a 200-mesh sieve for later use. If there are still residual substances on the sieve, continue pulverizing until all substances pass through the sieve. Then add modified nano-sized titanium dioxide and stir and mix at 100 r / min for 30 min before dispensing to obtain the water-enhancing agent for water quality improvement.
[0029] Example 2 Step 1: Weigh out 10 parts of compound oligosaccharide preparation, 6 parts of compound enzyme preparation, 6 parts of compound bacterial agent, 6 parts of modified nano-sized titanium dioxide, 20 parts of zeolite, 10 parts of activated carbon, 15 parts of attapulgite, 4 parts of calcium carbonate, and 4 parts of magnesium carbonate according to the specified ratio. The compound oligosaccharide preparation includes the following substances in parts by weight: 10 parts of chlorella oligosaccharide, 6 parts of mannan oligosaccharide, and 6 parts of xylooligosaccharide; The compound enzyme preparation includes the following components in parts by weight: 6 parts laccase, 8 parts phospholipase, 5 parts lipase, 5 parts cellulase, and 3 parts protease. The compound microbial agent includes the following substances in parts by weight: 6 parts Aspergillus niger, 5 parts Candida albicans, 3 parts Pseudomonas, and 6 parts Lactobacillus. The modified nano-sized titanium dioxide preparation method is as follows: nano-sized titanium dioxide powder is added to an ethanol solution of silane coupling agent with a concentration of 0.1.0 mol / L and heated to 70°C. The mass ratio of nano-sized titanium dioxide to silane coupling agent is 10:1. During the reaction, ethanol is cooled by reflux and vaporized. The stirring speed is 200 r / min and the reaction time is 2 h. Nitrogen gas is introduced for protection during the reaction. After the reaction is completed, the solid is centrifuged and washed with ethanol 4 times. Then, it is dried at a drying temperature of 70°C for 1.5 h to obtain modified nano-sized titanium dioxide. Step 2: Mix the compound oligosaccharide preparation, compound enzyme preparation, compound bacterial agent, zeolite, activated carbon, attapulgite, calcium carbonate, and magnesium carbonate, then pulverize and pass through a 200-mesh sieve for later use. If there are still residual substances on the sieve, continue pulverizing until all substances pass through the sieve. Then add modified nano-sized titanium dioxide and stir and mix at a speed of 200 r / min for 20 min before dispensing to obtain the water-enhancing agent for water quality improvement.
[0030] Example 3 Step 1: Weigh out 9 parts of compound oligosaccharide preparation, 5 parts of compound enzyme preparation, 4.5 parts of compound bacterial agent, 5 parts of modified nano-sized titanium dioxide, 18 parts of zeolite, 8 parts of activated carbon, 14 parts of attapulgite, 3 parts of calcium carbonate, and 3 parts of magnesium carbonate according to the specified ratio. The compound oligosaccharide preparation includes the following substances in parts by weight: 9 parts of chlorella oligosaccharide, 5 parts of mannan oligosaccharide, and 5 parts of xylooligosaccharide; The compound enzyme preparation includes the following components in parts by weight: laccase 5.5 parts, phospholipase 7 parts, lipase 4 parts, cellulase 4.5 parts, and protease 2.5 parts. The compound microbial agent includes the following components in parts by weight: 5 parts Aspergillus niger, 4 parts Candida albicans, 2.5 parts Pseudomonas, and 5 parts Lactobacillus. The modified nano-sized titanium dioxide is prepared as follows: nano-sized titanium dioxide powder is added to an ethanol solution of silane coupling agent with a concentration of 0.8 mol / L and heated to 65°C. The mass ratio of nano-sized titanium dioxide to silane coupling agent is 12:1. During the reaction, ethanol is vaporized by reflux cooling. The stirring speed is 180 r / min and the reaction time is 2.5 h. Nitrogen gas is introduced for protection during the reaction. After the reaction is completed, the solid is centrifuged and washed four times with ethanol. Then it is dried at 65°C for 1.7 h to obtain modified nano-sized titanium dioxide. Step 2: Mix the compound oligosaccharide preparation, compound enzyme preparation, compound bacterial agent, zeolite, activated carbon, attapulgite, calcium carbonate, and magnesium carbonate, then pulverize and pass through a 200-mesh sieve for later use. If there are still residual substances on the sieve, continue pulverizing until all substances pass through the sieve. Then add modified nano-sized titanium dioxide and stir at 150 r / min for 25 min before dispensing to obtain the water quality improvement agent.
[0031] Verification test Twenty-five artificial cement ponds of the same volume in a mandarin fish farm in Sanshui District, Foshan City, with moderate water pollution, were selected as experimental ponds. These ponds were divided into three groups: Example 1, Example 2, Example 3, a comparative group, and a control group. All mandarin fish were harvested from the ponds, and debris was removed. After cleaning, Example 1 group received 180 g / m³ of the water-improving agent prepared in Example 1; Example 2 group received 180 g / m³ of the water-improving agent prepared in Example 2; Example 3 group received 180 g / m³ of the water-improving agent prepared in Example 3; and the comparative group received 180 g / m³ of the water-improving agent prepared in Example 3. In the control group, existing water purification agent polyaluminum chloride was added at a dosage of 3. After one day, mandarin fish fry with a body length of 1±0.3cm were stocked in all artificial aquaculture cement ponds at a dosage of 30 fry per cubic meter. The aquaculture operations, such as feed addition amount, feed addition cycle, oxygenation amount, and aquaculture water temperature, were identical. During the aquaculture period, every month, the corresponding water-improving agents (such as hydrochloric acid or polyaluminum chloride) for Groups 1-3 and the comparative group were added at the same dosage. After 6 months of aquaculture, all mandarin fish in the artificial aquaculture cement ponds were harvested, and the number of surviving fish and the average weight per fish were counted. The survival rate was calculated based on the initial stocking number of mandarin fish fry. The results are as follows: Figure 1 and Figure 2 As shown.
[0032] Depend on Figure 1 and Figure 2 Data shows that the groups of Examples 1-3 using the water-enhancing agent prepared in Examples 1-3 of this invention for water quality improvement have better survival rates and average weight per fish than the comparative group and the blank group. The above data proves that the water-enhancing agent prepared in this invention for water quality improvement is superior to existing water purifiers in terms of water purification effect. It can effectively improve the quality of aquaculture water, provide a more suitable environment for the growth of aquatic products, promote the healthy growth of aquatic products, and improve the survival rate and growth rate of aquatic products.
[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A hydraulic agent for water quality improvement, characterized in that: The substance comprises the following components in parts by weight: 8-10 parts of compound oligosaccharide preparation, 4-6 parts of compound enzyme preparation, 3-6 parts of compound bacterial agent, 4-6 parts of modified nano-sized titanium dioxide, 15-20 parts of zeolite, 6-10 parts of activated carbon, 12-15 parts of attapulgite, 2-4 parts of calcium carbonate, and 2-4 parts of magnesium carbonate.
2. The hydraulic agent for water quality improvement according to claim 1, characterized in that: The compound oligosaccharide preparation comprises the following substances in parts by weight: 8-10 parts of chlorophyll oligosaccharide, 4-6 parts of mannan oligosaccharide, and 4-6 parts of xylooligosaccharide.
3. A hydraulic agent for water quality improvement according to claim 1, characterized in that: The compound enzyme preparation comprises the following components in parts by weight: 5-6 parts laccase, 6-8 parts phospholipase, 3-5 parts lipase, 4-5 parts cellulase, and 2-3 parts protease.
4. A hydraulic agent for water quality improvement according to claim 1, characterized in that: The compound microbial agent comprises the following substances in parts by weight: 4-6 parts of Aspergillus niger, 3-5 parts of Candida albicans, 2-3 parts of Pseudomonas, and 4-6 parts of Lactobacillus.
5. A hydraulic agent for water quality improvement according to claim 1, characterized in that: The modified nano-sized titanium dioxide preparation method is as follows: nano-sized titanium dioxide powder is added to an ethanol solution of silane coupling agent, heated and stirred to react, centrifuged after the reaction is completed, and the solid obtained after separation is washed with ethanol and dried to obtain modified nano-sized titanium dioxide.
6. A hydraulic agent for water quality improvement according to claim 5, characterized in that: The concentration of the silane coupling agent ethanol solution is 0.5-1.0 mol / L, the silane coupling agent is 3-aminopropyltriethoxysilane, and the mass ratio of nano-sized titanium dioxide to silane coupling agent is 10-15:
1.
7. A hydraulic agent for water quality improvement according to claim 5, characterized in that: The nano-sized titanium dioxide powder is added to an ethanol solution of silane coupling agent and reacted in a sealed reactor at a temperature of 60-70°C. During the reaction, ethanol is cooled and vaporized by reflux condensation. The stirring speed is 150-200 r / min, and the reaction time is 2-3 h. Nitrogen gas is introduced for protection during the reaction. The solid obtained after centrifugation is washed with ethanol 3-4 times and then dried at a drying temperature of 60-70°C for 1.5-2 h.
8. A hydraulic agent for water quality improvement according to claim 1, characterized in that: Its preparation method includes the following steps: Step 1: Weigh out the following ingredients according to the specified proportions: compound oligosaccharide preparation, compound enzyme preparation, compound microbial agent, modified nano-sized titanium dioxide, zeolite, activated carbon, attapulgite, calcium carbonate, and magnesium carbonate. Step 2: Mix the compound oligosaccharide preparation, compound enzyme preparation, compound bacterial agent, zeolite, activated carbon, attapulgite, calcium carbonate, and magnesium carbonate, then pulverize them, add modified nano-sized titanium dioxide, mix again, and package to obtain the water-enhancing agent for water quality improvement.
9. A hydraulic agent for water quality improvement according to claim 8, characterized in that: After crushing in step two, the material is passed through a 200-mesh sieve for later use. If there is still residual material on the sieve, crushing continues until all the material passes through the sieve.
10. A hydraulic agent for water quality improvement according to claim 1, characterized in that: When applying it, add it at a rate of 100-250g / m3. Before adding it, add it to 10 times its weight of water, mix and stir at a speed of 50-100r / min for 2-3 hours, and then spray it evenly into the aquaculture pond.