Yellow fur collaborative treatment system based on degradable foam carrier

Abstract

The invention relates to the technical field of water environment treatment, and particularly discloses a degradable foam carrier-based yellow moss synergistic treatment system which comprises the following steps: S1, preparing a surfactant solution: dissolving a nonionic surfactant in deionized water to form the surfactant solution with the concentration of 0.5%-2%; s2, preparing a modified PAC solution: dissolving modified polyaluminum chloride (PAC) in deionized water to form a solution with the concentration of 2-5%, and adding organic acid to adjust the polymerization degree and the stability of the solution; s3, preparing an algicide solution: preparing sodium percarbonate or other oxidative algicides into microspheres or dissolving into a solution with the concentration of 2-10%; the degradable foam carrier is combined with a medicament slow release technology, so that the algicide and the flocculant can be controllably released in a water body, the problem of over-high local concentration or rapid failure caused by one-time dosing of medicaments in the traditional technology is avoided, the effect of stably treating yellow moss for a long time is achieved, and the service life of the algicide and the flocculant is prolonged. And meanwhile, the agent waste and the influence on non-target organisms are reduced.

Description

Technical Field

[0001] This invention belongs to the field of water environment management technology, specifically relating to a collaborative management system for yellow algae based on a biodegradable foam carrier. Background Technology

[0002] In the field of water environment management, the control of yellow algae (mainly the excessive reproduction of harmful algae such as cyanobacteria) has always been an urgent problem to be solved. With the intensification of human activities such as agricultural runoff and domestic sewage discharge, eutrophication of water bodies has become increasingly common, leading to frequent outbreaks of yellow algae, which seriously disrupts the balance of aquatic ecosystems and affects water quality and the surrounding environment. In response to this problem, researchers and technicians have continuously explored and practiced, and developed a variety of yellow algae control technologies, including but not limited to physical removal, direct application of chemical agents, and biological treatment.

[0003] Physical removal methods, such as using nets or mechanical dredging boats to remove surface algae, can reduce the amount of algae to some extent, but they suffer from low efficiency, high cost, and easy recurrence. Furthermore, they cannot fundamentally solve the problem of eutrophication. Direct application of chemical agents, such as copper sulfate algaecides, can quickly kill algae, but it has many limitations. Firstly, chemical agents are often toxic and may harm aquatic organisms or even cause secondary pollution. Secondly, traditional chemical application methods are often one-time additions, leading to large fluctuations in agent concentration in the water. Excessively high local concentrations may adversely affect non-target organisms, while excessively low concentrations are ineffective in killing algae, and the agents quickly lose their effectiveness, making it difficult to maintain long-term stable treatment results. In addition, chemical agents cannot fundamentally solve the problem of nutrient release from bottom sediments, and algae are prone to recurrence in a short period. Therefore, improvements to these methods are needed. Summary of the Invention

[0004] The purpose of this invention is to provide a collaborative control system for yellow moss based on a biodegradable foam carrier, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] The collaborative management system for yellow moss based on biodegradable foam carriers includes the following steps:

[0007] S1. Preparation of surfactant solution: Dissolve nonionic surfactant in deionized water to form a surfactant solution with a concentration of 0.5%-2%;

[0008] S2. Preparation of modified PAC solution: Dissolve modified polyaluminum chloride (PAC) in deionized water to form a solution with a concentration of 2%-5%, and add organic acid to adjust its degree of polymerization and stability;

[0009] S3. Preparation of algaecide solution: Sodium percarbonate or other oxidizing algaecides are made into microspheres or dissolved into a solution with a concentration of 2%-10%;

[0010] S4. Agent mixing: Mix the modified PAC solution and the algaecide solution in a certain proportion, add the surfactant solution, and stir evenly to form a mixture loaded with the agent;

[0011] S5. Foam generation and deployment: The foaming equipment carried by the unmanned vessel mixes the liquid with compressed gas to generate a biodegradable foam carrier with a porosity of 92%-95%, and then sprays it evenly onto the target water body.

[0012] S6. Slow-release agent: The foam carrier gradually degrades in water, slowly releasing algaecides and modified PAC to kill, flocculate, and settle yellow algae.

[0013] Preferably, the nonionic surfactant is Tween-80.

[0014] Preferably, the organic acid is citric acid.

[0015] Preferably, the algaecide is sodium percarbonate microspheres with a loading of 100 mg / g foam carrier.

[0016] Preferably, the modified PAC loading is 60-100 mg / g foam carrier.

[0017] Preferably, the degradation time of the foam carrier is 24-72 hours to ensure the continuous release of the agent.

[0018] Preferably, the unmanned vessel is equipped with precision spraying equipment to ensure that the foam carrier covers the area where the moss is distributed.

[0019] Preferably, the system further includes a water monitoring module for real-time detection of water quality parameters and adjustment of the reagent dosing strategy.

[0020] Preferably, the porosity of the foam carrier is controlled by adjusting the gas injection rate and the surfactant concentration.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] (1) By adopting a combination of biodegradable foam carrier and slow-release technology, algaecides and flocculants can be released in water in a controlled manner, avoiding the problem of excessive local concentration or rapid failure caused by one-time addition of agents in traditional technology. This achieves the effect of long-term stable treatment of yellow algae, while reducing agent waste and impact on non-target organisms.

[0023] (2) By combining surfactants and precisely controlling the foam porosity, the foam carrier has good stability and coverage, and can be evenly dispersed on the water surface and fully contact the yellow moss. This overcomes the defect of uneven distribution of agents in traditional spraying methods, thereby significantly improving the treatment efficiency and ensuring that the agents play their maximum role.

[0024] (3) By setting up unmanned boats and intelligent delivery systems in synergy, precise delivery and automated operation of chemicals are achieved, solving the problems of low efficiency and incomplete coverage of manual operation, while reducing labor costs and safety risks, thus making the management of large areas of water more efficient, economical and easy to implement.

[0025] (4) By setting up the synergistic effect of modified PAC and oxidative algaecide, it can kill yellow algae while promoting its flocculation and sedimentation, and inhibit the release of nutrients in the bottom sediment. This avoids the problem that traditional single agents can only inhibit algae in the short term but cannot prevent recurrence, thus achieving the fundamental improvement of the water environment and extending the duration of the treatment effect. Attached Figure Description

[0026] Figure 1 This is a system flowchart of the present invention;

[0027] Figure 2 This is a flowchart illustrating the treatment of yellow moss according to the present invention;

[0028] Figure 3 This is a flowchart of the dynamic monitoring process for the treatment of diseases according to the present invention;

[0029] Figure 4 This is a diagram illustrating the treatment effect of the present invention. Detailed Implementation

[0030] 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, and 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.

[0031] Example 1:

[0032] Please see Figures 1 to 4 As shown, an application example of yellow algae control in Wuliangsuhai Lake is presented:

[0033] Background: Wuliangsuhai Lake is an important freshwater lake in Inner Mongolia Autonomous Region. In recent years, due to agricultural runoff and domestic sewage discharge, the lake has suffered from severe eutrophication, leading to the proliferation of yellow algae (mainly cyanobacteria). Before treatment, the water transparency was only 0.3 meters, and the algae coverage rate was over 85%, seriously affecting the aquatic ecosystem and the surrounding environment. Traditional mechanical dredging and direct application of chemical agents had limited effectiveness and posed a risk of secondary pollution. Therefore, the yellow algae treatment system without recycling proposed in this application was adopted for comprehensive treatment.

[0034] Implementation steps:

[0035] Water body detection and data analysis:

[0036] Before the remediation, water quality testing was conducted on the target area of ​​Wuliangsuhai Lake (approximately 5,000 square meters) to obtain key parameters:

[0037] pH value: 8.2 (weakly alkaline);

[0038] Dissolved oxygen (DO): 5.8 mg / L;

[0039] Total nitrogen (TN): 2.5 mg / L;

[0040] Total phosphorus (TP): 0.15 mg / L;

[0041] Chlorophyll a (Chl-a): 45 μg / L (indicating high algal biomass);

[0042] Transparency (SD): 0.3 meters.

[0043] Based on the test results, the main component of the yellow algae was determined to be Microcystis, and a combination of oxidizing algaecide (sodium percarbonate) and flocculant (modified PAC) was required for treatment.

[0044] Pharmaceutical preparation:

[0045] 1. Surfactant solution: Tween-80 was selected as the nonionic surfactant.

[0046] Preparation method: Dissolve 10g of Tween-80 in 1L of deionized water and stir until completely dissolved to form a 1% concentration solution.

[0047] To enhance foam stability, an additional 0.5% glycerin is added.

[0048] 2. Modified PAC solution: Citric acid-modified PAC (polyaluminum chloride) is selected to improve its flocculation efficiency and stability.

[0049] Preparation method: Dissolve 40g of modified PAC in 1L of deionized water and stir for 30 minutes until completely dissolved to form a 4% concentration solution.

[0050] Add 0.1% citric acid to adjust the pH to 6.5 to enhance the stability of PAC.

[0051] 3. Algaecide solution: Sodium percarbonate microspheres (particle size 50-100μm) are selected to control the slow release rate.

[0052] Preparation method: Disperse 60g of sodium percarbonate microspheres in 1L of deionized water to form a 6% concentration suspension.

[0053] Pharmaceutical mixing and foam preparation:

[0054] Mix the modified PAC solution and the algaecide solution at a 1:1 (volume ratio) and stir for 15 minutes to ensure uniformity.

[0055] Add surfactant solution (10% of the total mixture) and continue stirring for 10 minutes to form a stable mixture loaded with the drug.

[0056] A compressed air foaming system mounted on an unmanned vessel is used to foam the mixture at a gas flow rate of 5L / min, generating a biodegradable foam carrier with a porosity of 93%.

[0057] Foam release and control process:

[0058] The unmanned vessel evenly sprays foam carrier along a preset path (GPS positioning) to cover the entire yellow moss area.

[0059] The foam carrier forms a 1-2 cm thick covering layer on the water surface, making full contact with the yellow algae.

[0060] Monitoring of the governance process:

[0061] 0-24 hours: The foam slowly degrades, and the sodium percarbonate microspheres release H2O2 (hydrogen peroxide), which damages the algal cell membrane;

[0062] 24-48 hours: Modified PAC is gradually released, promoting algal flocculation and sedimentation;

[0063] 48-72 hours: Water transparency significantly improved, and the sedimentation rate of yellow algae reached over 95%.

[0064] Evaluation of governance effectiveness:

[0065] Water quality improved: transparency increased from 0.3m to 1.5m, chlorophyll a concentration decreased to 5μg / L (reduction of 89%), total phosphorus (TP) decreased to 0.05mg / L, and total nitrogen (TN) decreased to 1.2mg / L.

[0066] Ecological restoration: Submerged plants (such as myriophyllum) regrow and fish activity resumes.

[0067] Economic analysis: Compared with traditional methods (mechanical salvage and chemical agents), the cost is reduced by 40%, no carrier recovery is required, and human intervention is reduced.

[0068] The non-recycling yellow algae control system proposed in this application has performed excellently in the treatment of Wuliangsuhai Lake:

[0069] High efficiency: Yellow algae removal rate ≥96% within 72 hours, water transparency increased by 5 times;

[0070] Environmental friendliness: The biodegradable foam carrier causes no secondary pollution, and the slow-release of the agent reduces the ecological impact;

[0071] Automation: Unmanned vessels are deployed precisely and are suitable for large water areas;

[0072] Economic efficiency: The overall cost is lower than that of traditional methods, making it suitable for long-term governance.

[0073] Example 2:

[0074] Application examples of urban landscape water body yellow algae control:

[0075] Background: A large artificial lake (approximately 2,000 square meters) has long been affected by eutrophication, resulting in the proliferation of yellow algae (mainly Oscillatoria and diatoms) in summer, causing water turbidity and unpleasant odors, severely impacting the landscape. Traditional treatment methods (such as manual removal and copper-based algaecides) have short-term effects and easily lead to heavy metal accumulation. Therefore, the non-recyclable yellow algae treatment system proposed in this application is used for targeted treatment.

[0076] Implementation steps:

[0077] Water quality testing and problem diagnosis:

[0078] Before treatment, multiple water samples were taken and tested. The key parameters are as follows: pH value: 7.8 (neutral to slightly alkaline), dissolved oxygen (DO): 4.2 mg / L (local hypoxia), total nitrogen (TN): 3.0 mg / L, total phosphorus (TP): 0.18 mg / L, dominant algal species: Oscillatoria accounting for 60%, diatoms accounting for 30%, transparency: 0.4 meters.

[0079] The test results indicate that the water body is severely eutrophic, and it is necessary to address both algal proliferation and nutrient release from the bottom sediment simultaneously.

[0080] Pharmaceutical preparation:

[0081] Surfactant solution: Tween-80 and sodium dodecyl sulfonate (SDS) were mixed (ratio 3:1) to enhance the stability of foam in flowing water.

[0082] Preparation method: Dissolve 8g Tween-80 and 2g SDS in 1L of deionized water to form a 1% total concentration solution.

[0083] Modified PAC solution: PAC is modified with humic acid to improve the flocculation effect on diatoms.

[0084] Preparation method: Dissolve 30g of modified PAC and 0.5g of humic acid in 1L of deionized water and stir for 40 minutes to form a 3% PAC solution.

[0085] Algicide solution: Sodium percarbonate and potassium persulfate complex (PMS) were used in combination (ratio 2:1) to enhance the oxidative decomposition ability against Oscillatoria.

[0086] Preparation method: Disperse 40g of sodium percarbonate microspheres and 20g of PMS powder in 1L of deionized water to form a suspension with a total concentration of 6%.

[0087] Applications of intelligent delivery systems:

[0088] A collaborative system of unmanned ships and drones is adopted: the drones are equipped with multispectral cameras to identify high-density areas of yellow moss in real time and generate heat maps.

[0089] The unmanned vessel uses a heat map-based path planning system to precisely spray foam through a high-pressure spray system (0.3 MPa), achieving a coverage rate of 98%.

[0090] Foam parameters: porosity 94%, degradation time 48 hours.

[0091] Dynamic monitoring of the governance process:

[0092] 0-12 hours: Sodium percarbonate rapidly releases H2O2, and PMS generates sulfate radicals (SO42-). - •), synergistically destroying algal cell structure;

[0093] 12-36 hours: Humic acid-modified PAC promotes the co-sedimentation of algae and suspended solids, and simultaneously adsorbs phosphates released from the sediment;

[0094] 36-72 hours: Water transparency improves, bottom sediment oxidation layer forms, inhibiting nutrient re-release.

[0095] Verification of governance effectiveness:

[0096] parameter Before treatment After treatment (72 hours) Removal rate transparency 0.4m 1.8m +350％ Chlorophyll a 50 μg / L 4μg / L 92％ Dissolved oxygen 4.2 mg / L 6.8 mg / L +62％

[0097] Ecological response: The coverage of submerged plants (Ceratophyllum demersum) recovered from 5% to 35%, the odor was completely eliminated, and the landscape water became clear again.

[0098] Economic efficiency: The overall cost is reduced by 35% compared to traditional methods, and the treatment effect lasts for more than 3 months.

[0099] Conclusion: Considering the unique characteristics of urban landscape water bodies (high fluidity and high sensory requirements), this application achieves efficient removal of yellow algae (92%) and significant improvement in water quality within 72 hours through optimized formulation and intelligent dosing of reagents.

[0100] The system combines rapid response and long-term maintenance capabilities, providing a standardized solution for the ecological management of landscape water bodies.

[0101] The technology can be extended to use in scenarios involving flowing water, such as rivers and fountains.

[0102] Comparative example:

[0103] Existing technology: A combination of manual harvesting and chemical algae control with copper sulfate is used, with the following specific steps:

[0104] Manual removal: Using nets or mechanical dredging boats, the surface yellow moss is physically removed. This requires 5 workers per day, working 8 hours a day, with a removal efficiency of approximately 200-300m. 2 / person / day.

[0105] Chemical algae control: Directly spray a 1.5 mg / L copper sulfate solution (CuSO4·5H2O) into the water body once a week. Copper sulfate passes through copper ions (Cu... 2+ It destroys the cell membranes of algae, achieving rapid killing.

[0106] Subsequent handling: The salvaged algae need to be transported to a waste treatment plant for landfill or composting, with no specific measures to control the release of nutrients from the sediment.

[0107] Compared with Example 1 (Wuliangsuhai Lake Treatment):

[0108]

[0109]

[0110] Compared with Example 2 (Urban Landscape Water Body Treatment):

[0111]

[0112]

[0113] Comprehensive analysis

[0114] Technical limitations: Existing technologies rely on manual labor and highly toxic chemicals, resulting in low efficiency, high ecological risks, and high costs. They also fail to address the root cause of yellow algae recurrence (nutrient release from the sediment).

[0115] Advantages of this application:

[0116] High efficiency: Through the synergistic effect of slow-release oxidation and flocculation, it achieves rapid removal and long-term inhibition;

[0117] Environmental friendliness: The combination of biodegradable carriers and low-toxicity agents results in no secondary pollution;

[0118] Economic benefits: Automated equipment reduces labor costs by more than 60%.

[0119] Expanded application scenarios: Existing technologies are only applicable to small areas of static water bodies, while this application can be extended to large areas of flowing water bodies such as rivers and reservoirs.

[0120] Conclusion: The comparative examples show that existing technologies lag significantly behind this application in terms of efficiency, environmental friendliness, and economy. Examples 1 and 2, through the design of biodegradable carriers, synergistic sustained-release of agents, and intelligent delivery systems, address the core pain points of traditional methods and provide an innovative solution for the control of yellow moss.

[0121] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A system for the synergistic control of yellow moss based on a biodegradable foam carrier, characterized in that, Includes the following steps: S1. Preparation of surfactant solution: Dissolve nonionic surfactant in deionized water to form a surfactant solution with a concentration of 0.5%-2%; S2. Preparation of modified PAC solution: Dissolve modified polyaluminum chloride (PAC) in deionized water to form a solution with a concentration of 2%-5%, and add organic acid to adjust its degree of polymerization and stability; S3. Preparation of algaecide solution: Sodium percarbonate or other oxidizing algaecides are made into microspheres or dissolved into a solution with a concentration of 2%-10%; S4. Agent mixing: Mix the modified PAC solution and the algaecide solution in a certain proportion, add the surfactant solution, and stir evenly to form a mixture loaded with the agent; S5. Foam generation and deployment: The foaming equipment carried by the unmanned vessel mixes the liquid with compressed gas to generate a biodegradable foam carrier with a porosity of 92%-95%, and then sprays it evenly onto the target water body. S6. Slow-release agent: The foam carrier gradually degrades in water, slowly releasing algaecides and modified PAC to kill, flocculate, and settle yellow algae.

2. The synergistic control system for yellow moss based on biodegradable foam carrier according to claim 1, characterized in that: The nonionic surfactant is Tween-80.

3. The synergistic control system for yellow moss based on biodegradable foam carrier according to claim 1, characterized in that: The organic acid is citric acid.

4. The synergistic control system for yellow moss based on biodegradable foam carrier according to claim 1, characterized in that: The algaecide is sodium percarbonate microspheres with a loading of 100 mg / g foam carrier.

5. The synergistic control system for yellow moss based on a biodegradable foam carrier according to claim 1, characterized in that: The modified PAC loading is 60-100 mg / g foam carrier.

6. The synergistic control system for yellow moss based on biodegradable foam carrier according to claim 1, characterized in that: The degradation time of the foam carrier is 24-72 hours, ensuring the continuous release of the agent.

7. The synergistic control system for yellow moss based on a biodegradable foam carrier according to claim 1, characterized in that: The unmanned vessel is equipped with precision spraying equipment to ensure that the foam carrier covers the area where the yellow moss is distributed.

8. The synergistic control system for yellow moss based on biodegradable foam carrier according to claim 1, characterized in that: The system also includes a water monitoring module, which is used to detect water quality parameters in real time and adjust the chemical dosing strategy.

9. The synergistic control system for yellow moss based on biodegradable foam carrier according to claim 1, characterized in that: The porosity of the foam carrier is controlled by adjusting the gas injection rate and the surfactant concentration.

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