Composite preparation based on high-pore mineral substances, preparation method and application

Abstract

The invention provides a composite preparation based on high-pore mineral substances, a preparation method and application, and the composite preparation based on the high-pore mineral substances comprises the following components in parts by weight: 20-30 parts of attapulgite, 8-10 parts of bentonite, 13-20 parts of zeolite powder, 7-10 parts of diatomite, 19-25 parts of high-purity graphene powder and 0.3-0.7 part of biological decomposition enzyme dry powder. Heavy metal ions in a water body are gathered by the attapulgite and the diatomite with micropores, and pollutants in the water body are flocculated and settled through cooperation of the inorganic flocculant and the clastic enzyme, so that the metal ions and organic matters in the water body can be effectively reduced, and chemical reaction preparation is not needed.

Description

Technical Field

[0001] The invention relates to the field of sewage, and more specifically to a composite preparation based on high-porous minerals, a preparation method and application thereof. Background Art

[0002] Water is one of the most important natural resources for human survival and an indispensable resource for all ecosystems. Although my country has a vast territory and numerous rivers and lakes, the per capita water resources in the country are very low. Especially with the rapid development of the economy, a large amount of domestic sewage, industrial sewage and agricultural sewage have seriously polluted the water environment and affected the health and safety of animals, plants and humans. In the face of increasingly stringent environmental protection requirements and emission standards, in order to reduce the resource demand required in the sewage treatment process and reduce the potential risk of secondary pollution, new and efficient water treatment processes and water treatment agents must be developed.

[0003] Commonly used sewage treatment methods include: ion exchange, adsorption precipitation, chemical flocculation, biological and biochemical methods, etc. Among them, chemical flocculation uses flocculants to aggregate various pollutants, suspended particles or colloids in sewage to form flocs, which can be quickly settled. It is a simple and efficient sewage treatment method.

[0004] However, the flocculants currently used in the chemical flocculation method for treating sewage are mostly organic chemical synthetic flocculants, which are obtained after chemical processing and are non-renewable resources. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a high-porous mineral composite preparation, a preparation method and an application thereof, in view of the problem that the flocculant used in the above-mentioned chemical flocculation method for treating sewage is chemically synthesized.

[0006] The technical solution of the present invention to solve the above technical problems is to provide a composite preparation based on high-porous minerals, comprising the following components in weight ratio: 20 to 30 parts of attapulgite, 8 to 10 parts of bentonite, 13 to 20 parts of zeolite powder, 7 to 10 parts of diatomaceous earth, 19 to 25 parts of high-purity graphene powder and 0.3 to 0.7 parts of biodegradable enzyme dry powder.

[0007] As a further improvement of the present invention, the diatomaceous earth is modified diatomaceous earth with a density of 250 kg / m3, and the modified diatomaceous earth includes micron-sized pores.

[0008] As a further improvement of the present invention, the attapulgite is modified attapulgite, and the modified attapulgite includes micron-sized pores.

[0009] As a further improvement of the present invention, the biodegradation enzyme is phosphorylase.

[0010] The present invention also provides a method for preparing a high-porous mineral composite preparation, comprising the following steps:

[0011] Place 20-30 parts of attapulgite, 8-10 parts of bentonite, 13-20 parts of zeolite powder, 7-10 parts of diatomaceous earth, and 19-25 parts of high-purity graphene powder in a container and mix evenly;

[0012] The biodegradable enzyme dry powder is placed in the container and uniformly dispersed by constant temperature ultrasonic oscillation at 38-42° C. for 1-2 hours to obtain a composite preparation based on high-porous minerals.

[0013] As a further improvement of the present invention, the attapulgite is modified attapulgite, and the modified attapulgite includes micron-sized pores; the preparation method includes:

[0014] The unmodified attapulgite powder was calcined at 110-450°C for 5 hours in a nitrogen environment;

[0015] The calcined attapulgite is crushed and sieved to obtain modified attapulgite.

[0016] As a further improvement of the present invention, the diatomaceous earth is modified diatomaceous earth with a density of 250 kg / m3, and the modified diatomaceous earth includes micron-sized pores; the preparation method comprises:

[0017] The unmodified diatomaceous earth powder is placed in a high temperature furnace and calcined at 400-800°C for 1-3 hours;

[0018] The calcined diatomite powder is placed in a microwave oven for microwave treatment, and then taken out and cooled naturally to obtain the modified diatomite.

[0019] As a further improvement of the present invention, the biodegradation enzyme is phosphorylase.

[0020] The present invention also provides an application of a high-porous mineral-based composite preparation in treating sewage containing heavy metal ions and organic pollutants. The high-porous mineral-based composite preparation is the high-porous mineral-based composite preparation described above.

[0021] The present invention has the following beneficial effects: by aggregating heavy metal ions in water with microporous attapulgite and diatomaceous earth, and flocculating and settling pollutants in water through the cooperation of inorganic flocculants and decomposing enzymes, metal ions and organic matter in water can be effectively reduced without the need for chemical reaction preparation. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] The present invention provides a composite preparation based on high-porous minerals, which can be applied to sewage treatment, especially the treatment of sewage containing heavy metal ions and organic pollutants. The composite preparation based on high-porous minerals in this embodiment includes the following components in weight ratio: 20-30 parts of attapulgite, 8-10 parts of bentonite, 13-20 parts of zeolite powder, 7-10 parts of diatomaceous earth, 19-25 parts of high-purity graphene powder and 0.3-0.7 parts of biodegradable enzyme dry powder.

[0024] The above-mentioned high-porous mineral composite preparation can effectively reduce metal ions and organic matter in the water by aggregating heavy metal ions in the water with microporous attapulgite and diatomaceous earth, and flocculating and settling pollutants in the water through the cooperation of inorganic flocculants and decomposing enzymes.

[0025] When using the above-mentioned high-porous mineral composite preparation for sewage treatment, the high-porous mineral composite preparation can be directly diluted with water at a ratio of 5% to 10%, stirred and dissolved, and then introduced into the sewage to be treated. In particular, in order to achieve the best sewage treatment effect, the pH of the sewage to be treated can be adjusted to between 7 and 9, and the flocculation effect is the best.

[0026] In one embodiment of the present invention, the diatomite is modified diatomite with a density of 250 kg / m3, and the modified diatomite includes micron-scale pores in addition to nano-scale pores. Specifically, the modified diatomite can be prepared by the following method: unmodified diatomite powder is placed in a high-temperature furnace and roasted at 400-800°C for 1-3 hours, the roasted diatomite powder is placed in a microwave oven for microwave treatment, and the modified diatomite is taken out and naturally cooled to obtain the modified diatomite. The porosity and surface area of ​​the diatomite can be increased by the modification treatment, thereby affecting the physical and chemical properties of the diatomite, especially the cation exchange capacity of the diatomite.

[0027] In one embodiment of the present invention, the above-mentioned attapulgite is modified attapulgite, and the modified attapulgite includes micron-sized pores. Specifically, the modified attapulgite can be prepared by the following method: unmodified attapulgite powder is calcined at 110-450°C for 5 hours under a nitrogen environment, and the modified attapulgite is obtained after crushing and sieving. Through the above-mentioned modification operation, zeolite water, crystal water and a small amount of hydroxyl water on the surface of attapulgite can be removed, and the nanopores are folded, so that the pore size of the surface micropores of the modified attapulgite is relatively increased, and its adsorption activity is also improved, which is more conducive to the adsorption of heavy metal ions.

[0028] In one embodiment of the present invention, the above-mentioned biodegradation enzyme is a phosphorylase. After the high-porous mineral composite preparation is added to the sewage to be treated, the phosphorylase can adhere to the pores on the surface of the modified attapulgite or modified diatomaceous earth, and regulate the metabolic pathways of microorganisms in the sewage to be treated, thereby enhancing the absorption and release capacity of these microorganisms for phosphorus, thereby improving the removal efficiency of organic matter in the sewage.

[0029] Table 1 shows the data of treating casing factory wastewater using the above-mentioned high-porous mineral-based composite preparation, in which the direct physical and chemical effluent of raw water and the effluent of engineering raw water pretreatment were sampled on the 19th day after the addition of the high-porous mineral-based composite preparation.

[0030]

[0031] Table 1: Casing factory wastewater treatment data

[0032] Table 2 shows the data of wastewater treatment in a chemical park using the above-mentioned high-porous mineral-based composite preparation, in which the direct physical and chemical effluent of raw water and the effluent of engineering raw water pretreatment were sampled on the 30th day after the addition of the high-porous mineral-based composite preparation.

[0033]

[0034] Table 2: Wastewater treatment data of a chemical park

[0035] Table 3 shows the data of oilfield wastewater treatment using the above-mentioned high-porous mineral-based composite preparation, in which the direct physical and chemical effluent of raw water and the effluent of engineering raw water pretreatment were sampled on the second day after the addition of the high-porous mineral-based composite preparation.

[0036]

[0037]

[0038] Table 3: Oilfield wastewater treatment data

[0039] Compared with the prior art, the composite preparation based on high-porous minerals adopts a variety of large-structured, super-strong macromolecules and various water-purifying minerals, and has a superb water purification effect, faster polymerization reaction speed, faster sedimentation speed, dense alum flowers, excellent coagulation, and better effects in oil removal, decolorization, dehydration, turbidity removal, sterilization, and removal of COD and heavy metal ions in water. In addition, since it does not contain toxic substances, it is safe and reliable to use, has a wide range of PH applications, and has a water purification effect far exceeding that of traditional PAC, and can degrade various water quality indicators by about 80%.

[0040] The present invention also provides a method for preparing a high-porous mineral composite preparation, comprising the following steps:

[0041] Step S1: 20-30 parts of attapulgite, 8-10 parts of bentonite, 13-20 parts of zeolite powder, 7-10 parts of diatomaceous earth, and 19-25 parts of high-purity graphene powder are placed in a container and mixed evenly;

[0042] Step S2: placing the biodegradable enzyme dry powder in the container, and subjecting it to constant temperature ultrasonic oscillation at 38-42° C. for 1-2 hours to uniformly disperse it, thereby obtaining a composite preparation based on high-porous minerals.

[0043] In particular, in order to improve the sewage treatment effect, the above-mentioned attapulgite is modified attapulgite, and the modified attapulgite includes micron-sized pores; accordingly, the above-mentioned preparation method includes: calcining the unmodified attapulgite powder at 110-450°C for 5 hours in a nitrogen environment; crushing and sieving the calcined attapulgite to obtain modified attapulgite.

[0044] In addition, the diatomaceous earth can also be modified diatomaceous earth with a density of 250 kg / m3, and the modified diatomaceous earth includes micron-sized pores; accordingly, the above-mentioned preparation method includes: placing unmodified diatomaceous earth powder in a high-temperature furnace and calcining it at 400-800°C for 1-3 hours; placing the calcined diatomaceous earth powder in a microwave oven for microwave treatment, taking it out and cooling it naturally to obtain modified diatomaceous earth.

[0045] The present invention also provides an application of a high-porous mineral-based composite preparation in treating sewage containing heavy metal ions and organic pollutants. The high-porous mineral-based composite preparation is the high-porous mineral-based composite preparation described above.

[0046] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A composite preparation based on high-porous minerals, characterized in that: The invention comprises the following components in weight ratio: 20-30 parts of attapulgite, 8-10 parts of bentonite, 13-20 parts of zeolite powder, 7-10 parts of diatomaceous earth, 19-25 parts of high-purity graphene powder and 0.3-0.7 parts of biodegradable enzyme dry powder.

2. The high-porous mineral composite preparation according to claim 1, characterized in that: The diatomaceous earth is modified diatomaceous earth with a density of 250 kg / m3, and the modified diatomaceous earth includes micron-sized pores.

3. The high-porous mineral composite preparation according to claim 1, characterized in that: The attapulgite is modified attapulgite, and the modified attapulgite includes micron-sized pores.

4. The high-porous mineral composite preparation according to claim 1, characterized in that: The biodegradation enzyme is phosphorylase.

5. A method for preparing a composite preparation based on a high-porous mineral substance, characterized in that: The steps include: Place 20-30 parts of attapulgite, 8-10 parts of bentonite, 13-20 parts of zeolite powder, 7-10 parts of diatomaceous earth, and 19-25 parts of high-purity graphene powder in a container and mix evenly; The biodegradable enzyme dry powder is placed in the container and uniformly dispersed by constant temperature ultrasonic oscillation at 38-42° C. for 1-2 hours to obtain a composite preparation based on high-porous minerals.

6. The method for preparing a high-porous mineral composite preparation according to claim 5, characterized in that: The attapulgite is modified attapulgite, and the modified attapulgite includes micron-sized pores; the preparation method includes: The unmodified attapulgite powder was calcined at 110-450°C for 5 hours in a nitrogen environment; The calcined attapulgite is crushed and sieved to obtain modified attapulgite.

7. The method for preparing a high-porous mineral composite preparation according to claim 5, characterized in that: The diatomaceous earth is modified diatomaceous earth with a density of 250 kg / m3, and the modified diatomaceous earth includes micron-sized pores; the preparation method includes: The unmodified diatomaceous earth powder is placed in a high temperature furnace and calcined at 400-800°C for 1-3 hours; The calcined diatomite powder is placed in a microwave oven for microwave treatment, and then taken out and cooled naturally to obtain the modified diatomite.

8. The method for preparing a high-porous mineral composite preparation according to claim 6, characterized in that: The biodegradation enzyme is phosphorylase.

9. Use of a high-porous mineral composite preparation in treating sewage containing heavy metal ions and organic pollutants, wherein the high-porous mineral composite preparation is the high-porous mineral composite preparation according to any one of claims 1 to 4.

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