Composite mineral algal inhibition water purifying agent for algal bloom control

Abstract

The invention discloses a composite mineral algal inhibition water purifying agent for algal bloom control, and belongs to the technical field of water treatment. The composite mineral algal inhibition water purifying agent is formed by directly mixing potassium monopersulfate composite salt and composite mineral according to the mass ratio of 1: (15-30), and the composite mineral is formed by mixing zeolite and bentonite. The water purifying agent is prepared by directly mixing the potassium monopersulfate composite salt and the composite mineral formed by combining the zeolite and the bentonite according to a specific proportion, the water purifying agent can rapidly and efficiently degrade extracellular algal toxin in a water body while removing cyanobacteria cells through flocculation, 90% or above of algal toxin is removed through oxidation within 30 minutes, and the water purifying agent has the advantages that the water purifying agent is environmentally friendly and free of toxic and side effects. And an effective way is provided for algal bloom treatment and algal toxin removal.

Description

Technical Field

[0001] The present invention belongs to the technical field of water treatment, and in particular relates to a composite mineral algae-inhibiting water purifier for controlling algal blooms. Background Art

[0002] Global climate change and eutrophication have led to frequent algal blooms, a global environmental problem. Algal blooms not only severely damage the structure and function of aquatic ecosystems (such as causing a sharp drop in water clarity and dissolved oxygen levels, leading to the mass mortality of aquatic organisms), but also release algal toxins from dying algal cells, posing a serious threat to the aquatic ecosystem and human health.

[0003] Traditional methods for controlling algal blooms primarily include physical, chemical, and biological methods. Physical methods, such as mechanical removal and aeration, are often inefficient and difficult to implement on a large scale. Chemical algaecides, such as copper sulfate, can inhibit algae growth to a certain extent but are highly susceptible to secondary pollution, resulting in long-term negative impacts on the aquatic ecosystem. Biological methods, such as the introduction of algae-eating organisms, are significantly impacted by environmental factors and suffer from poor stability. Summary of the Invention

[0004] In response to the above technical problems, the present invention proposes a composite mineral algae-inhibiting water purifier for controlling algal blooms.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] One of the purposes of the present invention is to provide a composite mineral algae-inhibiting water purifier for algal bloom control, which is directly mixed with potassium monopersulfate composite salt and composite mineral in a mass ratio of 1:(15-30), wherein the composite mineral is a mixture of zeolite and bentonite.

[0007] The present invention prepares a water purifier by directly mixing a specific ratio of potassium monopersulfate with a composite mineral composed of zeolite and bentonite. Its mechanism of action includes flocculation and sedimentation, ammonia nitrogen adsorption, algal toxin degradation, algal cell growth inhibition, and disruption of algal-bacterial relationships. Bentonite primarily acts as a flocculator and sedimentator, while zeolite primarily absorbs ammonia nitrogen from the water. Potassium monopersulfate is primarily used to rapidly and efficiently degrade extracellular algal toxins in the water, inhibiting further algal cell growth and disrupting algal-bacterial relationships to a certain extent, effectively inhibiting toxin synthesis in algal cells. This water purifier can simultaneously remove cyanobacterial cells through flocculation and efficiently degrade extracellular algal toxins in the water, providing an effective approach for algal bloom control and algal toxin removal.

[0008] Furthermore, the mass ratio of the zeolite to the bentonite is (1-3):1.

[0009] Furthermore, the particle size of the zeolite is 500-800 mesh and the moisture content is less than 1%.

[0010] Zeolite is a natural porous mineral material with a rich pore structure and a large specific surface area, which gives it good ion exchange properties. Zeolite is mainly composed of aluminosilicate minerals, and its crystal structure contains regularly arranged pores and channels. The size of these pores is uniform and adjustable within a certain range, allowing zeolite to selectively adsorb molecules of different sizes and properties. In a water environment, zeolite can effectively adsorb nutrients such as ammonia nitrogen, and algae growth and reproduction are highly dependent on nitrogen sources. The adsorption of ammonia nitrogen by zeolite can significantly reduce the amount of nutrients available to algae, thereby inhibiting the growth and reproduction of algal cells. The present invention selects zeolite with a particle size of 500-800 mesh. Zeolite in this particle size range has a large specific surface area and good adsorption performance, and can more effectively contact and adsorb substances such as ammonia nitrogen in water.

[0011] Furthermore, the bentonite has a particle size of 500-1000 mesh and a moisture content of less than 1%.

[0012] Bentonite, a clay mineral primarily composed of montmorillonite, possesses a unique layered structure. Its fine particles possess strong adsorption and cation exchange capacity, allowing it to rapidly disperse in water to form a colloid. Bentonite's negative surface charge interacts with the surface charge of algal cells, promoting flocculation and ultimately separating and removing them from the water. The present invention utilizes bentonite with a particle size of 500-1000 mesh, as this particle size exhibits excellent dispersibility in water and enhances flocculation.

[0013] Potassium monopersulfate is a new type of strong oxidant with broad application prospects in water treatment. It possesses many excellent properties, the most prominent of which is its ecological safety. The substances produced during the decomposition process of potassium monopersulfate are environmentally friendly, do not cause lasting damage to aquatic ecosystems, and have no residual toxicity. It plays a vital role in ensuring water cleanliness and maintaining the healthy growth of aquatic life. For example, in aquaculture ponds, potassium monopersulfate can be used to control the growth of harmful microorganisms and algae in the water. It is non-toxic to aquatic life such as farmed fish and does not accumulate residues in aquatic products, thus ensuring the quality and safety of these products.

[0014] A second object of the present invention is to provide a method for preparing a composite mineral algae-inhibiting water purifier for controlling algal blooms, comprising the following steps: mixing zeolite and bentonite to obtain a composite mineral, adding potassium monopersulfate complex salt to the composite mineral to obtain a mixture, and stirring the mixture to obtain a composite mineral algae-inhibiting water purifier.

[0015] Furthermore, the stirring condition is: mixing at a rotation speed of 300-600 rpm for 15-30 minutes.

[0016] The third object of the present invention is to provide a composite mineral algae-inhibiting water purifier for use in the field of algae bloom control.

[0017] The mechanism of action of the present invention:

[0018] Flocculation and sedimentation: Bentonite itself can form a colloid in water, and its surface carries a negative charge, which can interact with the surface charge of algae cells, promoting algae cell flocculation. The presence of zeolite further enhances the stability of the system, facilitating algae cell flocculation and sedimentation. Once the algae cells flocculate into large particles, they are easier to separate and remove from the water. The addition of potassium monopersulfate composite salt does not affect the flocculation and sedimentation effects of bentonite and zeolite. On the contrary, to a certain extent, it may damage the algae cell structure, making the algae cells more susceptible to flocculation. For example, in the examples, after adding the composite mineral anti-algae water purifier, the algae cells can flocculate into larger particles in a short period of time, making them easier to remove.

[0019] Ammonia nitrogen adsorption: Zeolite has a porous structure and strong ion exchange capacity, which can absorb ammonia nitrogen from water. Algae growth is highly dependent on nitrogen sources. After zeolite adsorbs ammonia nitrogen, it reduces the nutrients available to algae, thereby inhibiting the growth and reproduction of algal cells. When potassium monopersulfate complex salt exerts its oxidizing effect, it cooperates with the ammonia nitrogen adsorption effect of zeolite. On the one hand, the active substances produced by the decomposition of potassium monopersulfate may change the water environment, making ammonia nitrogen more easily adsorbed by zeolite. On the other hand, the adsorption of ammonia nitrogen by zeolite reduces the nutrient source of algae, making it more difficult for algae to maintain growth and repair damaged structures when faced with the oxidative attack of potassium monopersulfate, thereby enhancing the inhibitory effect on algae. In experiments, after using this composite water purifier, the ammonia nitrogen removal rate can reach a certain level, effectively reducing the nutrients required for algae growth.

[0020] Algal toxin degradation: Potassium monopersulfate complex salt has strong oxidizing properties and can quickly oxidize and degrade extracellular algal toxins after being combined with composite minerals. The reactive oxygen species it produces attack the molecular structure of algal toxins, causing them to decompose into harmless small molecules. The presence of zeolite and bentonite may promote the oxidizing effect of potassium monopersulfate to a certain extent. For example, they may adsorb some impurities or provide a certain reaction interface, allowing potassium monopersulfate to more effectively contact and react with algal toxins. At the same time, potassium monopersulfate destroys algal cells, inhibiting the continued release of algal toxins by algal cells, and working together with zeolite and bentonite to reduce the total amount of algal toxins in the water. In the embodiment, the composite water purifier can oxidatively remove more than 95% of algal toxins within 30 minutes, reducing the harm of algal toxins.

[0021] Inhibiting Algal Cell Growth and Disrupting the Algal-Bacteria Relationship: The oxidizing properties of potassium monopersulfate complexes can damage algal cell structure and inhibit growth. Simultaneously, it disrupts the symbiotic relationship between algae and bacteria, affecting algal metabolism and toxin production, further inhibiting algal blooms. Zeolite adsorbs ammonia nitrogen, reducing algal nutrient sources, while bentonite promotes algal cell flocculation and sedimentation. These synergistic effects of potassium monopersulfate inhibiting algal cell growth and disrupting the algal-bacteria relationship make it difficult for algal cells to grow and reproduce normally under the combined pressures of nutrient deficiency, structural damage, and disrupted symbiotic relationships, effectively suppressing algal blooms.

[0022] Furthermore, the amount of the composite mineral algae-inhibiting water purifier for algal bloom control added to the algal bloom water sample is 10 g / mL.

[0023] Furthermore, the algal bloom water sample includes cyanobacterial cells and cyanobacterial toxins.

[0024] Furthermore, the concentration of the cyanobacteria cells is 0.8×10 6 -1.5×10 6 cells / mL.

[0025] Furthermore, the concentration of the cyanobacterial toxin is 1-10 μg / L.

[0026] The water sample in the algal bloom water sample can be fresh water, sea water, acidic water or alkaline water. The composite mineral algae-inhibiting water purifier prepared by the present invention can effectively flocculate and remove cyanobacteria cells, degrade algal toxins and adsorb ammonia nitrogen in these water samples.

[0027] Compared with the prior art, the present invention has the following advantages and technical effects:

[0028] The present invention comprehensively considers the respective characteristics and advantages of zeolite, bentonite and potassium monopersulfate composite salt, compositely modifies them, and develops a highly efficient, environmentally friendly and multifunctional algal bloom control agent that can overcome many drawbacks of traditional algal bloom control methods, achieve effective control of algal blooms and repair and protection of the water ecological environment.

[0029] The present invention prepares a water purifier by directly mixing a specific ratio of potassium monopersulfate complex salt with a composite mineral composed of zeolite and bentonite. This water purifier can simultaneously remove cyanobacterial cells through flocculation while rapidly and efficiently degrading extracellular algal toxins in the water. Oxidative removal of over 90% of algal toxins is achieved in 30 minutes. It also inhibits algal cell growth and toxin synthesis. The zeolite absorbs pollutants such as ammonia and nitrogen in the water, while the bentonite flocculates and settles the algal cells, providing an effective approach for algal bloom control and algal toxin removal. DETAILED DESCRIPTION

[0030] Various exemplary embodiments of the present invention will now be described in detail. This detailed description should not be considered as limiting the present invention, but rather as a more detailed description of certain aspects, features, and embodiments of the present invention.

[0031] It should be understood that the terms described herein are intended only to describe particular embodiments and are not intended to limit the present invention. In addition, for numerical ranges herein, it should be understood that each intermediate value between the upper and lower limits of the range is also specifically disclosed. Each smaller range between any intermediate value within a stated value or stated range and any other stated value or intermediate value within the stated range is also encompassed by the present invention. The upper and lower limits of these smaller ranges may be independently included or excluded within the scope.

[0032] Unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art. Although only preferred methods and materials are described herein, any methods and materials similar or equivalent to those described herein may also be used in the practice or testing of the present invention. All documents mentioned in this specification are incorporated by reference to disclose and describe the methods and / or materials associated with the documents. In the event of any conflict with any incorporated document, the contents of this specification shall prevail.

[0033] It will be apparent to those skilled in the art that various modifications and variations may be made to the specific embodiments described herein without departing from the scope or spirit of the invention. Other embodiments will be apparent to those skilled in the art from the description of the invention. The description and examples are intended to be illustrative only.

[0034] The words “include,” “including,” “have,” “contain,” etc. used in this document are open-ended terms, meaning including but not limited to.

[0035] The present invention provides a method for preparing a composite mineral algae-inhibiting water purifier for algal bloom control, comprising the following steps: mixing zeolite and bentonite to obtain a composite mineral; adding potassium monopersulfate complex salt to the composite mineral to obtain a mixture; and stirring the mixture to obtain the composite mineral algae-inhibiting water purifier. The stirring conditions are: mixing at a speed of 300-600 rpm for 15-30 minutes. The specific steps include:

[0036] (1) Raw material pretreatment

[0037] Zeolite with a particle size of 500-800 mesh and bentonite with a particle size of 500-1000 mesh are used as raw materials and dried to a moisture content of less than 1%. The potassium monopersulfate salt is then tested for purity using high-precision chemical analysis instruments such as high-performance liquid chromatography (HPLC) or ion chromatograph (IC) to accurately measure the active ingredient content in the potassium monopersulfate salt. The salt is also checked for impurity ions or other substances that may affect the performance of the water purifier. If impurity levels exceeding the specified standard are detected, the potassium monopersulfate salt must be further purified or a qualified raw material batch must be replaced to ensure its purity meets subsequent preparation requirements.

[0038] (2) Preparation of composite minerals

[0039] The mixing operation is performed in a mass ratio of zeolite to bentonite within the range of (1-3) : 1, and the mixed zeolite and bentonite are thoroughly stirred to form a composite mineral. A three-dimensional mixer can be used for mixing to ensure that the two minerals are evenly mixed.

[0040] (3) Modification treatment

[0041] The potassium monopersulfate complex salt and the composite mineral are accurately weighed in a mass ratio of 1:(15-30) and then placed directly into a mixing device for thorough mixing under specific mixing conditions. The mixing time can be set between 15 and 30 minutes, and the mixing speed can be controlled between 300 and 600 rpm to ensure that the potassium monopersulfate complex salt is evenly dispersed in the composite mineral, thereby obtaining a modified composite mineral algae-inhibiting water purifier.

[0042] As a typical but non-limiting example, the mass ratio of zeolite to bentonite can be selected to be 1:1, 2:1, 3:1 or any range therebetween.

[0043] As a typical but non-limiting example, the mass ratio of the potassium monopersulfate complex salt to the complex mineral can be selected to be 1:15, 1:20, 1:30 or any range therebetween.

[0044] As a typical but non-limiting example, during the mixing of potassium monopersulfate complex salt and the complex mineral, the mixing speed can be selected to be 300 rpm, 400 rpm or 500 rpm; the mixing time can be 15 minutes, 20 minutes or 30 minutes.

[0045] The prepared composite mineral algae-inhibiting water purifier can be used in the field of algae bloom control. The amount of the composite mineral algae-inhibiting water purifier added to the algae bloom water sample is 10g / mL. The algae bloom water sample contains cyanobacteria cells and cyanobacterial toxins. The concentration of the cyanobacteria cells is 0.8×10 6-1.5×10 6 cells / mL, such as 0.8×10 6 cells / mL, 1×10 6 cells / mL or 1.3×10 6 cells / mL. The concentration of the cyanobacterial toxin is 1-10 μg / L, such as 1 μg / L, 5 μg / L, or 10 μg / L. The water sample in the algal bloom water sample can be fresh water, seawater, acidic water, or alkaline water, all of which can effectively flocculate and remove cyanobacterial cells, degrade algal toxins, and adsorb ammonia nitrogen.

[0046] Unless otherwise specified, the "room temperature" in the present invention refers to 20-30°C.

[0047] The raw materials used in this invention are all commercially available. The potassium monopersulfate complex salt used in this invention is purchased from Shanghai MacLean Biochemical Technology Co., Ltd. and is a white powder or granules with a potassium monopersulfate (KHSO5) content of 42-46%. Its purity and active ingredients meet the requirements of this invention.

[0048] The technical solution of the present invention is further illustrated by the following examples.

[0049] Example 1

[0050] A method for preparing a composite mineral algae-inhibiting water purifier for controlling algal blooms comprises the following steps:

[0051] (1) Selecting zeolite with a particle size of 500-800 mesh and bentonite with a particle size of 500-1000 mesh, and mixing them in a mass ratio of zeolite to bentonite = 2:1 to obtain a composite mineral;

[0052] (2) Add 200 g of composite mineral to 6.67 g of potassium monopersulfate composite salt, place the mixture in a high-speed mixer, and mix it at a speed of 400 rpm for 15 minutes to obtain a composite mineral algae-inhibiting water purifier.

[0053] Application Example 1

[0054] Algae inhibition and water purification effect test: take 100mL of water containing cyanobacteria cells with a concentration of 1×10 6 To a simulated algal bloom water sample containing 10 μg / mL of algal bloom and 10 μg / L of algal toxins, 1 g of the composite mineral algal inhibitor and water purifier prepared in Example 1 was added and allowed to react under stirring for 30 minutes. Microscopic observation of algal cell flocculation revealed that most algal cells had flocculated into larger particles. Spectrophotometric determination of the remaining algal cell concentration showed an algal cell removal rate of 90%. High-performance liquid chromatography determination of the algal toxin concentration revealed an algal toxin removal rate of 96%. Simultaneously, the ammonia nitrogen concentration in the water sample was determined, revealing an ammonia nitrogen removal rate of 68%.

[0055] Example 2

[0056] A method for preparing a composite mineral algae-inhibiting water purifier for controlling algal blooms comprises the following steps:

[0057] (1) Selecting zeolite with a particle size of 500-800 mesh and bentonite with a particle size of 500-1000 mesh, and mixing them in a mass ratio of zeolite to bentonite = 3:1 to obtain a composite mineral;

[0058] (2) Add 200 g of composite mineral to 10 g of potassium monopersulfate composite salt, place the mixture in a high-speed mixer, and mix at a speed of 300 rpm for 20 minutes to obtain a composite mineral algae-inhibiting water purifier.

[0059] Application Example 2

[0060] Algae inhibition and water purification effect test: Take 100mL of water containing cyanobacteria cells with a concentration of 1.3×10 6 To a simulated algal bloom water sample containing 10 μg / mL of algal cells and 10 μg / L of algal toxins, 1 g of the composite mineral algae-inhibiting water purifier prepared in Example 2 was added and the mixture was stirred for 30 minutes. Spectrophotometric determination of the remaining algal cell concentration revealed a 92% algal cell removal rate. High-performance liquid chromatography (HPLC) determination of the algal toxin concentration revealed a 97% algal toxin removal rate. Simultaneously, the ammonia nitrogen concentration in the water sample was determined, revealing a 75% ammonia nitrogen removal rate.

[0061] Example 3

[0062] A method for preparing a composite mineral algae-inhibiting water purifier for controlling algal blooms comprises the following steps:

[0063] (1) Selecting zeolite with a particle size of 500-800 mesh and bentonite with a particle size of 500-1000 mesh, and mixing them in a mass ratio of zeolite to bentonite = 1:1 to obtain a composite mineral;

[0064] (2) 200 g of a composite mineral was added to 13.33 g of potassium monopersulfate composite salt, and the mixture was placed in a high-speed mixer and mixed at a speed of 500 rpm for 10 minutes to obtain a composite mineral algae-inhibiting water purifier.

[0065] Application Example 3

[0066] Algae inhibition and water purification effect test: Take 100mL of water containing cyanobacteria cells with a concentration of 0.8×10 6To a simulated algal bloom water sample containing 100 cells / mL and an algal toxin concentration of 5 μg / L, 1 g of the composite mineral algae inhibitor and water purifier prepared in Example 3 was added and allowed to react under stirring for 30 minutes. Spectrophotometric determination of the remaining algal cell concentration showed an algal cell removal rate of 88%. High-performance liquid chromatography determination of the algal toxin concentration showed an algal toxin removal rate of 95%. Simultaneously, the ammonia nitrogen concentration in the water sample was determined, showing an ammonia nitrogen removal rate of 76%.

[0067] The algae cell removal rates in Examples 1-3 show that the addition of the composite mineral algae-inhibiting water purifier in Example 1 achieved an algae cell removal rate of over 90%, in Example 2 it reached 92%, and in Example 3 it reached 88%. These data demonstrate that the combination of potassium monopersulfate, zeolite, and bentonite synergistically promotes flocculation, sedimentation, and algae cell growth inhibition, effectively removing algae from water.

[0068] The algal toxin removal rates in Examples 1-3 show a 96% algal toxin removal rate in Example 1, a 97% algal toxin removal rate in Example 2, and a 95% algal toxin removal rate in Example 3. The oxidative degradation of potassium monopersulfate, combined with the auxiliary effects of zeolite and bentonite, can quickly and efficiently remove extracellular algal toxins from water, reducing their threat to the aquatic ecosystem and human health.

[0069] Application Example 4

[0070] Long-term stability experiment: The composite mineral anti-algae water purifier prepared in Example 1 was placed in a dry, sealed container and left at room temperature for 3 months. A certain amount was taken every 15 days to test the anti-algae and water purification effect. The specific experimental method was the same as that of Application Example 1. The results showed that over a period of 3 months, the algae cell removal rate remained above 80%, the algae toxin removal rate remained at around 85%, and the ammonia nitrogen removal rate fluctuated between 70-80%. This shows that the composite water purifier formed by mixing potassium monopersulfate with zeolite and bentonite can still work synergistically with each other over the long term, continuously exerting its algae and algae toxin removal effect, and maintaining good water purification capabilities.

[0071] Application Example 5

[0072] Freshwater, seawater, and simulated algal bloom water samples with different pH values ​​(6-9) were selected for the experiment. The specific experiments are as follows:

[0073] (1) Freshwater group: 100 mL of freshwater containing cyanobacteria with a concentration of 1.1×10 6To a simulated algal bloom water sample containing 100 cells / mL and an algal toxin concentration of 4 μg / L, 1 g of the composite mineral algae inhibitor and water purifier prepared in Example 2 was added and allowed to react under stirring for 30 minutes. The remaining algal cell concentration was determined by spectrophotometry, the algal toxin concentration was determined by high-performance liquid chromatography, and the ammonia nitrogen concentration in the water sample was determined.

[0074] After testing: in freshwater algal bloom water samples, the algal cell removal rate can reach 95%, the algal toxin removal rate is 98%, and the ammonia nitrogen removal rate is 85%.

[0075] (2) Seawater group: 100 mL of water containing cyanobacteria cells at a concentration of 1.3 × 10 6 To a simulated algal bloom water sample containing 100 cells / mL and an algal toxin concentration of 6 μg / L, 1 g of the composite mineral algae inhibitor and water purifier prepared in Example 2 was added and allowed to react under stirring for 30 minutes. The remaining algal cell concentration was determined by spectrophotometry, the algal toxin concentration was determined by high-performance liquid chromatography, and the ammonia nitrogen concentration in the water sample was determined.

[0076] After testing: in seawater algal bloom water samples, due to the complex composition of seawater, the algal cell removal rate is slightly lower than that of fresh water, at 90%, but the algal toxin removal rate can still reach 95%, and the ammonia nitrogen removal rate is 75%.

[0077] (3) Different pH groups: 100 mL of cyanobacteria cells with a concentration of 1.4×10 6 To a simulated algal bloom water sample containing 10 μg / mL of algal cells and 10 μg / L of algal toxins, 1 g of the composite mineral algae inhibitor and water purifier prepared in Example 2 was added and allowed to react under stirring for 30 minutes. The remaining algal cell concentration was determined by spectrophotometry, the algal toxin concentration was determined by high-performance liquid chromatography, and the ammonia nitrogen concentration in the water sample was determined. The pH values ​​of the water samples were 6 and 9, respectively.

[0078] After testing: In water samples with different pH values, the water purifier showed good adaptability. Under acidic conditions (pH value of 6), the algae cell removal rate was 93%, the algae toxin removal rate was 96%, and the ammonia nitrogen removal rate was 80%. Under alkaline conditions (pH value of 9), the algae cell removal rate was 90%, the algae toxin removal rate was 95%, and the ammonia nitrogen removal rate was 78%.

[0079] The above experiments show that after potassium monopersulfate is mixed with zeolite and bentonite, the components can synergistically adapt to the different water quality characteristics in different water quality environments and play a role in removing algae and algal toxins.

[0080] It can be seen from the above examples and the verification of various experimental results that the composite mineral anti-algae water purifier of the present invention can effectively flocculate and remove cyanobacterial cells, degrade algal toxins and adsorb ammonia nitrogen under different raw material ratios, preparation conditions and various water quality environments, and has good application prospects in algal bloom control.

[0081] Comparative Example 1

[0082] Same as Example 2, except that the mass ratio of zeolite to bentonite is 1:1.

[0083] Comparative Application Example 1

[0084] Take 100 mL of cyanobacteria containing a concentration of 1.0×10 6 To a simulated algal bloom water sample containing 10 μg / L of algal cells / mL and an algal toxin concentration of 10 μg / L, 1 g of the composite mineral algae inhibitor and water purifier prepared in Comparative Example 1 was added and allowed to react under stirring for 30 minutes. The remaining algal cell concentration was determined by spectrophotometry, the algal toxin concentration was determined by high-performance liquid chromatography, and the ammonia nitrogen concentration in the water sample was determined.

[0085] After testing: in the algal bloom water samples, the algal cell removal rate was 86.7%, the algal toxin removal rate was 90.3%, and the ammonia nitrogen removal rate was 64%.

[0086] Comparative Example 2

[0087] Same as Example 2, except that the mass ratio of potassium monopersulfate composite salt to composite mineral is 1:40, i.e., 5 g of potassium monopersulfate composite salt and 200 g of composite mineral.

[0088] Comparative Application Example 2

[0089] Take 100 mL of cyanobacteria containing a concentration of 1.0×10 6 To a simulated algal bloom water sample containing 10 μg / L of algal cells / mL and an algal toxin concentration of 10 μg / L, 1 g of the composite mineral algae inhibitor and water purifier prepared in Comparative Example 2 was added and allowed to react under stirring for 30 minutes. The remaining algal cell concentration was determined by spectrophotometry, the algal toxin concentration was determined by high-performance liquid chromatography, and the ammonia nitrogen concentration in the water sample was determined.

[0090] After testing: in the algal bloom water sample, the algal cell removal rate was 89%, the algal toxin removal rate was 87.6%, and the ammonia nitrogen removal rate was 65%.

[0091] Comparative Example 3

[0092] Same as Example 2, except that the particle size of the zeolite is 200 mesh.

[0093] Comparative Application Example 3

[0094] Take 100 mL of cyanobacteria containing a concentration of 1.0×106 To a simulated algal bloom water sample containing 10 μg / L of algal cells / mL and an algal toxin concentration of 10 μg / L, 1 g of the composite mineral algae inhibitor and water purifier prepared in Comparative Example 3 was added and allowed to react under stirring for 30 minutes. The remaining algal cell concentration was determined by spectrophotometry, the algal toxin concentration was determined by high-performance liquid chromatography, and the ammonia nitrogen concentration in the water sample was determined.

[0095] After testing: in the algal bloom water sample, the algal cell removal rate was 81%, the algal toxin removal rate was 72%, and the ammonia nitrogen removal rate was 68%.

[0096] Comparative Example 4

[0097] Same as Example 2, except that the particle size of the bentonite is 300 mesh.

[0098] Comparative Application Example 4

[0099] Take 100 mL of cyanobacteria containing a concentration of 1.0×10 6 To a simulated algal bloom water sample containing 10 μg / L of algal cells / mL and an algal toxin concentration of 10 μg / L, 1 g of the composite mineral algae inhibitor and water purifier prepared in Comparative Example 4 was added and allowed to react under stirring for 30 minutes. The remaining algal cell concentration was determined by spectrophotometry, the algal toxin concentration was determined by high-performance liquid chromatography, and the ammonia nitrogen concentration in the water sample was determined.

[0100] After testing: in the algal bloom water sample, the algal cell removal rate was 81%, the algal toxin removal rate was 93%, and the ammonia nitrogen removal rate was 72%.

[0101] Comparative Example 5

[0102] Same as Example 2, except that the zeolite of equal mass is replaced by vermiculite with a particle size of 500-800 mesh.

[0103] Comparative Application Example 5

[0104] Take 100 mL of cyanobacteria containing a concentration of 1.0×10 6 To a simulated algal bloom water sample containing 10 μg / L of algal cells / mL and an algal toxin concentration of 10 μg / L, 1 g of the composite mineral algae inhibitor and water purifier prepared in Comparative Example 5 was added and allowed to react under stirring for 30 minutes. The remaining algal cell concentration was determined by spectrophotometry, the algal toxin concentration was determined by high-performance liquid chromatography, and the ammonia nitrogen concentration in the water sample was determined.

[0105] After testing: in the algal bloom water sample, the algal cell removal rate was 83%, the algal toxin removal rate was 90%, and the ammonia nitrogen removal rate was 61%.

[0106] Comparative Example 6

[0107] Same as Example 2, except that the mass of bentonite is replaced by medical stone with a particle size of 500-1000 mesh.

[0108] Comparative Application Example 6

[0109] Take 100 mL of cyanobacteria containing a concentration of 1.0×10 6 To a simulated algal bloom water sample containing 10 μg / L of algal cells / mL and an algal toxin concentration of 10 μg / L, 1 g of the composite mineral algae inhibitor and water purifier prepared in Comparative Example 6 was added and allowed to react under stirring for 30 minutes. The remaining algal cell concentration was determined by spectrophotometry, the algal toxin concentration was determined by high-performance liquid chromatography, and the ammonia nitrogen concentration in the water sample was determined.

[0110] After testing: in the algal bloom water sample, the algal cell removal rate was 74%, the algal toxin removal rate was 81%, and the ammonia nitrogen removal rate was 63%.

[0111] Comparative Example 7

[0112] The same as Example 2, except that the preparation method of the composite mineral is as follows: zeolite with a particle size of 500-800 mesh, bentonite with a particle size of 500-1000 mesh and medical stone with a particle size of 500-800 mesh are selected and mixed in a mass ratio of 3:1:1 to obtain the composite mineral.

[0113] Comparative Application Example 7

[0114] Take 100 mL of cyanobacteria containing a concentration of 1.0×10 6 To a simulated algal bloom water sample containing 10 μg / L of algal cells / mL and an algal toxin concentration of 10 μg / L, 1 g of the composite mineral algae inhibitor and water purifier prepared in Comparative Example 7 was added and allowed to react under stirring for 30 minutes. The remaining algal cell concentration was determined by spectrophotometry, the algal toxin concentration was determined by high-performance liquid chromatography, and the ammonia nitrogen concentration in the water sample was determined.

[0115] After testing: in the algal bloom water sample, the algal cell removal rate was 86%, the algal toxin removal rate was 88%, and the ammonia nitrogen removal rate was 69%.

[0116] The above are merely preferred embodiments of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A composite mineral algae-inhibiting water purifier for algae bloom control, characterized in that: The composite mineral is directly mixed with potassium monopersulfate composite salt and composite mineral in a mass ratio of 1:(15-30), wherein the composite mineral is mixed with zeolite and bentonite.

2. The composite mineral algae-inhibiting water purifier for algae bloom control according to claim 1, characterized in that: The mass ratio of the zeolite to the bentonite is (1-3):

1.

3. The composite mineral algae-inhibiting water purifier for algal bloom control according to claim 2, characterized in that: The particle size of the zeolite is 500-800 meshes, and the moisture content is less than 1%.

4. The composite mineral algae-inhibiting water purifier for algae bloom control according to claim 2, characterized in that: The bentonite has a particle size of 500-1000 meshes and a moisture content of less than 1%.

5. A method for preparing the composite mineral algae-inhibiting water purifier for algae bloom control according to any one of claims 1 to 4, characterized in that: The method comprises the following steps: mixing zeolite and bentonite to obtain a composite mineral, adding potassium monopersulfate composite salt to the composite mineral to obtain a mixture, and stirring the mixture to obtain a composite mineral algae-inhibiting water purifier.

6. The method for preparing the composite mineral algae-inhibiting water purifier for algal bloom control according to claim 5, characterized in that: The stirring condition is: mixing at a rotation speed of 300-600 rpm for 15-30 minutes.

7. Use of the composite mineral algae-inhibiting water purifier for algae bloom control according to any one of claims 1 to 4 in the field of algae bloom control.

8. The use according to claim 7, characterized in that The amount of the composite mineral algae-inhibiting water purifier for controlling algal blooms added to the algal bloom water sample is 10 g / mL.

9. The use according to claim 8, characterized in that The algal bloom water sample contains cyanobacterial cells and cyanobacterial toxins.

10. The use according to claim 9, characterized in that The concentration of the cyanobacteria cells was 0.8×10 6 -1.5×10 6 cells / mL; and / or The concentration of the cyanobacterial toxin is 1-10 μg / L.