A method for efficiently reducing turbidity and improving transparency of water body by using natural mineral

Abstract

This invention belongs to the field of water environment management technology and discloses a method for efficiently reducing water turbidity and improving water transparency using natural minerals. The method includes: S1, preparing a turbidity removal container using a material that is acid-resistant, corrosion-resistant, and has good water permeability and air permeability; S2, crushing natural minerals rich in iron and aluminum functional substances, then spraying an aqueous solution of iron-sulfur oxidizing bacteria onto their surface, mixing thoroughly, and then placing the mixture into the turbidity removal container; S3, completely immersing the turbidity removal container in the turbid water to be treated. This invention utilizes the iron and aluminum elements in natural minerals to form a large-area, highly active iron-aluminum flocculent gel under the action of water waves and dissolved oxygen. This gel, through charge neutralization and adsorption bridging, aggregates with particulate matter in the water to form larger aggregates, while simultaneously sweeping in suspended small particulate impurities. These impurities then settle to the bottom of the water body by gravity, effectively removing particulate matter, reducing water turbidity, and improving water transparency.

Description

Technical Field

[0001] This invention relates to the field of water environment management technology, specifically a method for efficiently reducing water turbidity and improving water transparency using natural minerals. Background Technology

[0002] With people's increasing demands for the quality of their living environment, numerous enclosed artificial landscape water bodies, such as artificial lakes and wetlands, have been constructed. Because these landscape water bodies are not formed in a natural environment, they suffer from poor water flow, insufficient self-purification capacity, incomplete ecosystems, and are prone to water quality deterioration. Especially during the peak of summer and early autumn, large temperature fluctuations easily lead to water turbidity and low transparency, which not only detracts from the aesthetics but also affects the feeding of aquatic organisms such as fish and shrimp. If timely remedial measures are not taken, it can even lead to eutrophication, further complicating water purification and maintenance. Therefore, how to reduce the turbidity and improve the transparency of landscape water bodies is one of the urgent problems that needs to be solved in this field.

[0003] Currently, methods for reducing turbidity and improving transparency in landscape water bodies mainly include physical, biological, and chemical methods, but all have significant limitations. Physical methods, such as sediment dredging (excavating and immobilizing sediment), involve large-scale engineering projects and are less adaptable to large lakes due to the high costs of manpower, materials, and financial resources. Chemical methods involve adding chemical reagents, such as chemically enhanced coagulation and Fenton's reagent oxidation. While these can achieve rapid water purification, they are costly and have low economic benefits. Furthermore, the flocculated sediment may adhere to the gills of aquatic organisms, affecting their respiration and thus their normal growth and development. Biological methods utilize algae and microorganisms to improve the aquatic environment; however, if the water quality is poor, the overuse of algae and microorganisms may be counterproductive, exacerbating eutrophication. Summary of the Invention

[0004] This invention aims to provide a method for efficiently reducing water turbidity and improving water transparency using natural minerals. It utilizes metallic elements such as iron and aluminum in natural minerals to form a large-surface-area, highly active iron-aluminum flocculent gel under the influence of water waves and dissolved oxygen. This gel, through charge neutralization and adsorption bridging, aggregates with particulate matter in the water, forming larger agglomerates while simultaneously sweeping in suspended small particulate impurities. These impurities then settle to the bottom of the water body under gravity, effectively removing particulate matter, reducing turbidity, and improving water transparency. This solves the problems in the prior art.

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

[0006] A method for efficiently reducing water turbidity and increasing water transparency using natural minerals includes the following steps:

[0007] S1. Select materials that are acid-resistant, corrosion-resistant, and have good water permeability and air permeability to prepare woven bags, wire mesh bags, or plastic baskets, which are used to fill natural minerals to become bag-type or frame-type turbidity removal containers.

[0008] S2. Crush the natural minerals rich in iron and aluminum functional substances, then spray an aqueous solution of iron-sulfur oxidizing bacteria on their surface, mix well, and then put them into the turbidity removal container prepared in step S1.

[0009] S3. Completely immerse the turbid water container containing the aqueous solution of natural minerals and iron-sulfur oxidizing bacteria prepared in step S2 into the turbid water body to be treated, at a distance of 0-10 cm from the water surface. Under the combined action of water waves and dissolved oxygen, the natural minerals form a highly active natural flocculent gel with a large specific surface area, which is continuously released into the water body. It forms stable aggregates with impurities in the water and forms a larger network structure through bridging to capture more suspended impurities in the water body. Under the action of gravity, the aggregates settle rapidly to reduce the turbidity of the water body and improve its transparency.

[0010] Furthermore, in S1, the prepared bag or frame turbidity removal container is a woven bag, wire mesh bag, or plastic basket with a pore size of 50 to 200 mesh.

[0011] Furthermore, in S2, the natural mineral is high-sulfur coal gangue rich in iron and aluminum functional substances, wherein the mass percentage of iron and aluminum ranges from Fe 3+ 0.75–0.8%, Al 3+ 10-12%.

[0012] Furthermore, in S2, the particle size range of the natural minerals after crushing is 2–5 mm.

[0013] Furthermore, in S2, the sprayed aqueous solution of iron-sulfur oxidizing bacteria has a mass ratio of iron-sulfur oxidizing bacteria to water volume of 0.2-0.8%.

[0014] Furthermore, in S3, the amount of natural minerals added is adjusted according to the turbidity of the water, wherein the mass ratio of natural minerals to water is 1:10 to 3:10.

[0015] The beneficial effects of the technical solution are:

[0016] This invention provides a method for efficiently reducing water turbidity and improving water transparency using natural minerals. The turbidity removal device used is a woven bag, mesh bag, or plastic basket, into which the natural minerals are placed. The raw materials are readily available, inexpensive, and easy to operate. Secondly, natural minerals rich in iron and aluminum are abundant in nature. Using them to improve water turbidity can further enhance the reduction, resource utilization, and harmless treatment of industrial solid waste, promoting the development of a circular economy and demonstrating strong practicality. Furthermore, this invention requires no artificial energy, no chemical reagents or consumables throughout the process, does not generate secondary pollution, has low operating costs, and provides continuous and effective results. Attached Figure Description

[0017] Figure 1 This is a bar graph showing the time required for water to become clear when natural minerals are submerged to different degrees in turbid water, as shown in Embodiment 1 of the present invention.

[0018] Figure 2 This is a bar graph showing the changes in turbidity of water when natural minerals are submerged to different degrees in turbid water, as shown in Embodiment 1 of the present invention. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0020] A method for efficiently reducing water turbidity and increasing water transparency using natural minerals includes the following steps:

[0021] S1. Select materials that are acid-resistant, corrosion-resistant, and have good water and air permeability to prepare woven bags, wire mesh bags, or plastic baskets with a pore size of 50 to 200 mesh, which are used to fill natural minerals to become bag-type or frame-type turbidity removal containers.

[0022] S2. Crush the natural mineral rich in iron and aluminum functional substances to a particle size range of 2-5 mm, then spray an aqueous solution of iron-sulfur oxidizing bacteria on its surface, mix well, and then put it into the turbidity removal container prepared in step S1; wherein, the natural mineral is high-sulfur coal gangue rich in iron and aluminum functional substances, and the mass percentage of iron and aluminum is in the range of Fe 3+ 0.75–0.8%, Al 3+ 10-12%; the mass ratio of iron-sulfur oxidizing bacteria in the aqueous solution of iron-sulfur oxidizing bacteria to the volume of water is 0.2-0.8%;

[0023] S3. Completely immerse the turbidity removal container containing the aqueous solution of natural minerals and iron-sulfur oxidizing bacteria prepared in step S2 into the turbid water body to be treated, at a distance of 0-10 cm from the water surface. Under the combined action of water waves and dissolved oxygen, the natural minerals form highly active natural flocculants with a large specific surface area, which are continuously released into the water body. They form stable aggregates with impurities in the water and, through bridging, form a larger network structure to capture more suspended impurities in the water body. Under the action of gravity, they settle rapidly to reduce the turbidity of the water body and improve its transparency. The amount of natural minerals added is adjusted according to the turbidity of the water body, and the mass ratio of natural minerals to water is 1:10 to 3:10.

[0024] Example 1

[0025] Crush coal gangue to 2-5mm, weigh 20g of coal gangue, spray it with an aqueous solution containing 0.2% iron-sulfur oxidizing bacteria, mix well, and then put it into a 200-mesh mesh fabric bag. Seal the bag tightly with a tie to prevent powder leakage. Then, completely (100%) immerse the apparatus in a beaker containing 100mL of turbid water. Record the time required for the water to become clear and transparent, and the turbidity at that point. Figure 1 , Figure 2 As shown, the experimental results indicate that it takes 3 days for the water to become completely clear, and the turbidity decreases from 49.6 NTU to 2.16 NTU, with a turbidity removal rate of 95.65%.

[0026] Example 2

[0027] Crush coal gangue to 2-5mm, weigh 20g of coal gangue, spray it with an aqueous solution containing 0.2% iron-sulfur oxidizing bacteria, mix well, and then pack it into a 200-mesh mesh fabric bag. Seal the bag tightly with a tie to prevent powder leakage. Then, immerse the bag 50% in a beaker containing 100mL of turbid water. Record the time required for the water to become clear and transparent, and the turbidity at that point. Figure 1 , Figure 2 As shown, the experimental results indicate that it takes 4 days for the water to become completely clear, and the turbidity decreases from 49.6 NTU to 2.7 NTU, with a turbidity removal rate of 94.56%.

[0028] Example 3

[0029] Crush coal gangue to 2-5 mm, weigh 20 g of coal gangue, spray it with an aqueous solution containing 0.2% iron-sulfur oxidizing bacteria, mix well, and then pack it into a 200-mesh mesh fabric bag. Seal the bag tightly with a tie to prevent powder leakage. Then, immerse the bag 33% of its volume in a beaker containing 100 mL of turbid water. Record the time required for the water to become clear and transparent, and the turbidity at that point. Figure 1 , Figure 2As shown, the experimental results indicate that it takes 5 days for the water to become completely clear, and the turbidity decreases from 49.6 NTU to 3.6 NTU, with a turbidity removal rate of 92.74%.

[0030] As can be seen from the above embodiments 1 to 3, the method for efficiently reducing water turbidity and improving transparency using natural minerals provided by the present invention can effectively reduce water turbidity and improve water quality. It has the advantages of outstanding turbidity removal effect, wide availability of raw materials, simple operation, and strong practicality.

[0031] The above descriptions are merely embodiments of the present invention, and common knowledge regarding specific technical solutions or characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A method for efficiently reducing water turbidity and increasing water transparency using natural minerals, characterized in that, Includes the following steps: S1. Select materials that are acid-resistant, corrosion-resistant, and have good water permeability and air permeability to prepare woven bags, wire mesh bags, or plastic baskets, which are used to fill natural minerals to become bag-type or frame-type turbidity removal containers. S2. Crush the natural minerals rich in iron and aluminum functional substances, then spray an aqueous solution of iron-sulfur oxidizing bacteria on their surface, mix well, and put them into the turbidity removal container prepared in step S1. S3. Completely immerse the turbid water container containing the aqueous solution of natural minerals and iron-sulfur oxidizing bacteria prepared in step S2 into the turbid water body to be treated, at a distance of 0-10 cm from the water surface. Under the combined action of water waves and dissolved oxygen, the natural minerals form a highly active natural flocculent gel with a large specific surface area, which is continuously released into the water body. It forms stable aggregates with impurities in the water and forms a larger network structure through bridging to capture more suspended impurities in the water body. Under the action of gravity, the aggregates settle rapidly to reduce the turbidity of the water body and improve its transparency.

2. The method for efficiently reducing water turbidity and improving water transparency using natural minerals according to claim 1, characterized in that, In S1, the prepared bag or frame turbidity removal container is a woven bag, wire mesh bag or plastic basket with a pore size of 50 to 200 mesh.

3. The method for efficiently reducing water turbidity and improving water transparency using natural minerals according to claim 1, characterized in that, In S2, the natural mineral is high-sulfur coal gangue rich in iron and aluminum functional substances, wherein the mass percentage of iron and aluminum ranges from Fe to Fe. 3+ 0.75–0.8%, Al 3+ 10-12%.

4. The method for efficiently reducing water turbidity and improving water transparency using natural minerals according to claim 1, characterized in that, In S2, the particle size range of natural minerals after crushing is 2–5 mm.

5. The method for efficiently reducing water turbidity and improving water transparency using natural minerals according to claim 1, characterized in that, In S2, the sprayed aqueous solution of iron-sulfur oxidizing bacteria has a mass ratio of iron-sulfur oxidizing bacteria to water volume of 0.2-0.8%.

6. The method for efficiently reducing water turbidity and improving water transparency using natural minerals according to claim 1, characterized in that, In S3, the amount of natural minerals added is adjusted according to the turbidity of the water body, wherein the mass ratio of natural minerals to water is 1:10 to 3:10.

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