CN110627335A - Black and odorous water body sediment in-situ remediation material and preparation method thereof - Google Patents
Black and odorous water body sediment in-situ remediation material and preparation method thereof Download PDFInfo
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- CN110627335A CN110627335A CN201910973783.4A CN201910973783A CN110627335A CN 110627335 A CN110627335 A CN 110627335A CN 201910973783 A CN201910973783 A CN 201910973783A CN 110627335 A CN110627335 A CN 110627335A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/004—Sludge detoxification
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/06—Nutrients for stimulating the growth of microorganisms
Abstract
The invention belongs to the technical field of sewage treatment materials and preparation thereof, and discloses a black and odorous water body sediment in-situ remediation material and a preparation method thereof. The material is prepared by utilizing various raw materials which have good dephosphorization and denitrification effects, extremely strong slow release effects and rich sources. The living environment of bottom sediment microorganisms is improved, and the decomposition speed of the microorganisms on organic matters in the bottom sediment and the nitrogen and phosphorus removal effects are improved, so that the reduction of the bottom sediment is promoted; and the phosphorus in the sediment is effectively fixed by utilizing the phosphorus-fixing components in the raw materials, so that the phosphorus is prevented from being released into the water body, and the effects of effectively reducing endogenous pollution, accelerating the degradation of sediment pollutants, reducing the amount of sludge in black and odorous water, improving the current situation of the water body and having a lasting treatment effect are achieved. The preparation method has the advantages of simple operation process, less equipment required for operation, low requirement on operators, low cost, effective reduction of the loss of human resources, material resources and economic resources, and suitability for industrial production and popularization.
Description
Technical Field
The invention belongs to the technical field of sewage treatment materials and preparation thereof, and particularly relates to a black and odorous water body sediment in-situ remediation material and a preparation method thereof.
Background
The black and odorous water body is a difficult point for treating the water environment of river channels in cities and partial villages, particularly in areas with concentrated population, the black and odorous water body has serious influence on surrounding residents, the social response is strong, and the treatment of the black and odorous water body is urgent.
The black and odorous water body is generated as a result of comprehensive superposition of non-point source pollution, endogenous pollution and the like. The point source pollution and the area source pollution can be effectively restrained by strict discharge standards in a way of blocking pollution sources; endogenous pollution mainly comes from the accumulation of bottom mud of a river channel, pollutants such as nitrogen and phosphorus are released from the bottom mud to cause the rapid propagation of aquatic microorganisms, algae and aquatic plants, so that dissolved oxygen in a water body is rapidly consumed to cause the deterioration of the water quality of the water body, foul gas is generated, and the water body becomes black and turbid.
The traditional sediment treatment mainly adopts the modes of salvaging, interception, dredging and the like, and the mode has quick effect, but wastes time and labor, and is only a treatment mode which treats the symptoms and the root causes.
And the sludge is treated by adopting methods such as sludge incineration, on-site stacking, natural drying, simple landfill method, composting, soil improvement and the like. The treatment methods mostly have the problems of difficult sludge dehydration, long treatment period, incomplete removal of various eutrophic components in the sludge and the like, and the subsequent treatment of the sludge still needs to be continuously performed by continuously investing manpower, material resources and economy, and simultaneously, people and animals nearby live and grow and are continuously polluted, so that the influence is gradually increased.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide an in-situ repair material for black and odorous water body sediment and a preparation method thereof.
The technical scheme adopted by the invention is as follows: the black and odorous water body sediment in-situ repair material is mainly prepared from the following raw materials in parts by mass:
800 portions of natural porous material 200-;
preferably, the repair material is mainly prepared from the following raw materials in parts by mass:
660 parts of natural porous material, 550 parts of zeolite 300, 430 parts of iron powder 280, 480 parts of bentonite 300 and 20-50 parts of wetting agent;
further preferably, the repair material is mainly prepared from the following raw materials in parts by mass:
550 parts of natural porous material, 350 parts of zeolite, 300 parts of iron powder, 360 parts of bentonite and 30-40 parts of wetting agent.
The in-situ repair material for the black and odorous water body bottom sediment is prepared by utilizing various raw materials which have good dephosphorization and denitrification effects, extremely strong slow release effects and rich sources. The in-situ repair material can change the anaerobic environment of microorganisms in the bottom sludge into an anaerobic-facultative-aerobic system by improving the living environment of the microorganisms in the bottom sludge, so that the decomposition speed of the microorganisms on organic matters in the bottom sludge and the denitrification and dephosphorization effects are improved, and the reduction of the bottom sludge is promoted; and the phosphorus in the bottom mud can be effectively fixed by utilizing the phosphorus fixing components in the raw materials, so that the phosphorus is prevented from being released into the water body again. Thereby achieving the effects of effectively reducing endogenous pollution, reducing the amount of sludge in the black and odorous water body, improving the current situation of the water body and having lasting treatment effect.
Preferably, the natural porous material comprises one or more of palygorskite and montmorillonite.
Preferably, the zeolite comprises one or more of analcime, laumontite, phillipsite, natrolite, mordenite, heulandite, clinoptilolite, chabazite and faujasite.
The palygorskite and the montmorillonite are selected as the preferable natural porous materials and the zeolite are used in the in-situ repair material for the black and odorous water body sediment, and the palygorskite, the montmorillonite and the zeolite have large specific surface areas, so that various microorganisms can be attached conveniently and the attachment amount of the microorganisms can be increased in the application process, the anaerobic-anoxic-aerobic environment of the microorganisms can be effectively constructed, the survival and propagation of different microorganisms are facilitated, and the water body purification capacity of the sediment microorganisms can be exerted to the maximum extent.
Preferably, the iron powder includes one or more of scrap iron, iron ore powder, and fine iron powder.
The iron powder is used in the in-situ repair material for the black and odorous water body bottom mud, and can provide an electron donor for anaerobic reaction and effectively accelerate anaerobic denitrification. The flocculation effect of the iron powder on water pollutants is exerted through a series of chemical reactions of the iron powder, and the purification of the water is completed.
Preferably, the wetting agent comprises a rare earth material; preferably, the rare earth material comprises a lanthanide rare earth material; further preferably, the lanthanide rare earth material includes lanthanum chloride;
further preferably, the wetting agent is a lanthanum chloride aqueous solution, and the mass concentration of the lanthanum chloride aqueous solution is 0.2-0.5%.
According to the preparation method of the black and odorous water body sediment in-situ remediation material, the wetting agent is added after the raw material powdery substances are obtained, the wetting agent is not only used for carrying out good integration on all raw materials to the maximum extent, but also can be used for effectively fixing and further removing phosphorus in sludge and sewage and wastewater by selecting the lanthanide rare earth material.
A preparation method of a black and odorous water body sediment in-situ restoration material comprises the steps of respectively selecting a natural porous material, zeolite, iron powder and bentonite according to corresponding proportions, crushing, sieving, mixing, uniformly stirring, adding a wetting agent, granulating, drying, sintering, and cooling to room temperature to obtain a finished product.
The preparation method of the in-situ repair material for the black and odorous water body bottom mud has the advantages of simple operation process, less equipment required for operation, low requirement on operators and low cost, effectively reduces the loss of human resources, material resources and economic resources, and is suitable for industrial production and popularization.
Preferably, the natural porous material is filtered through a sieve with 1500 meshes of 300-;
preferably, the zeolite is sieved by a 100-700 mesh sieve, preferably by a 180-500 mesh sieve, and further preferably by a 280-400 mesh sieve;
preferably, the iron powder is sieved by a sieve with 30-100 meshes, preferably a sieve with 50-95 meshes, and further preferably a sieve with 60-80 meshes;
preferably, the bentonite is sieved by a sieve with 80-450 meshes, preferably a sieve with 120 meshes and 360 meshes, and further preferably a sieve with 150 meshes and 280 meshes.
According to the preparation method of the in-situ repair material for the black and odorous water body sediment, the raw materials are crushed and sieved to obtain powdery substances of the raw materials, and the powdery substances are used for the effectiveness and the high efficiency of mutual configuration of all the raw materials in the subsequent preparation process and the integrity of a final finished product.
The granulated particle size is preferably 0.8 to 5mm, preferably 1 to 4.5mm, and more preferably 1 to 3 mm.
The preparation method of the in-situ repair material for the black and odorous water body bottom sediment is characterized in that the granulation particle size is set so as to increase the contact area with the sludge and the sewage and wastewater to the maximum in the specific use process, thereby ensuring the high efficiency of the dephosphorization and denitrification effect.
Preferably, the drying temperature is 80-200 ℃, and the drying time is 1-5 hours;
preferably, the drying temperature is 95-150 ℃, and the drying time is 1.5-4 hours;
further preferably, the drying temperature is 105-120 ℃, and the drying time is 2-3 hours.
Preferably, the sintering temperature is 280-800 ℃, and the sintering time is 1-5 hours;
preferably, the sintering temperature is 350-720 ℃, and the sintering time is 1.5-3 hours;
further preferably, the sintering temperature is 450-550 ℃ and the sintering time is 2-2.5 hours.
According to the preparation method of the in-situ repair material for the black and odorous water body bottom sediment, the drying, the temperature and the using time selected during the drying are set, and the temperature for sintering after the drying and the time required for sintering are set so as to ensure that the maximum using efficiency is achieved by using the minimum energy consumption in the limited time, and the integrity and the effectiveness of the repair material are ensured.
The invention has the beneficial effects that:
the black and odorous water body bottom mud in-situ restoration material provided by the invention is prepared by utilizing various raw materials which have good dephosphorization and denitrification effects, extremely strong slow release effects and rich sources. The in-situ repair material can change the anaerobic environment of microorganisms in the bottom sludge into an anaerobic-facultative-aerobic system by improving the living environment of the microorganisms in the bottom sludge, so that the decomposition speed of the microorganisms on organic matters in the bottom sludge and the denitrification and dephosphorization effects are improved, and the reduction of the bottom sludge is promoted; and the phosphorus in the bottom mud can be effectively fixed by utilizing the phosphorus fixing components in the raw materials, so that the phosphorus is prevented from being released into the water body again. Thereby achieving the effects of effectively reducing endogenous pollution, accelerating the degradation of bottom mud pollutants, reducing the amount of sludge in black and odorous water, improving the current situation of water and having lasting treatment effect. The preparation method has the advantages of simple operation process, less equipment required for operation, low requirement on operators, low cost, effective reduction of the loss of human resources, material resources and economic resources, and suitability for industrial production and popularization.
Detailed Description
The present invention is further illustrated below with reference to specific examples. It will be appreciated by those skilled in the art that the following examples, which are set forth to illustrate the present invention, are intended to be part of the present invention, but not to be construed as limiting the scope of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The examples were carried out under the conventional conditions, unless otherwise specified. The reagents used are all conventional products which are commercially available.
Example 1:
selecting 200 g of palygorskite according to a corresponding proportion, crushing, and then screening through a 300-mesh filter screen to obtain powdery palygorskite, crushing 180 g of zeolite, then screening through a 100-mesh filter screen to obtain powdery zeolite, crushing 150 g of waste scrap iron, then screening through a 30-mesh filter screen to obtain powdery waste scrap iron, crushing 120 g of bentonite, and then screening through a 80-mesh filter screen to obtain filtered bentonite. Mixing the obtained powdery palygorskite, powdery zeolite, powdery waste scrap iron and filtered bentonite, stirring uniformly, adding 10 g of lanthanum chloride aqueous solution with the mass concentration of 0.2%, putting into a granulator to obtain a spherulite material with the particle size of 0.8mm, drying the spherulite material at 80 ℃ for 1 hour, sintering at 280 ℃ for 1 hour, and cooling to room temperature to obtain a finished product.
Example 2:
200 g of palygorskite is selected according to a corresponding proportion, crushed and then filtered by a 1500-mesh filter screen to obtain powdery palygorskite, 180 g of zeolite is crushed and then filtered by a 700-mesh filter screen to obtain powdery zeolite, 150 g of waste scrap iron is crushed and then filtered by a 100-mesh filter screen to obtain powdery waste scrap iron, 120 g of bentonite is crushed and then filtered by a 450-mesh filter screen to obtain filtered bentonite. Mixing the obtained powdery palygorskite, powdery zeolite, powdery waste scrap iron and filtered bentonite, uniformly stirring, adding 60 g of a lanthanum chloride aqueous solution with the mass concentration of 0.5%, putting into a granulator to obtain a spherulite material with the particle size of 5mm, drying the spherulite material at 200 ℃ for 5 hours, sintering at 800 ℃ for 5 hours, and cooling to room temperature to obtain a finished product.
Example 3:
selecting 800 g of palygorskite according to a corresponding proportion, crushing the palygorskite, and then screening the palygorskite by a 300-mesh filter screen to obtain powdery palygorskite, 750 g of zeolite after crushing, and then screening the palygorskite by a 100-mesh filter screen to obtain powdery zeolite, 680 g of waste scrap iron after crushing, and then screening the waste scrap iron by a 30-mesh filter screen to obtain powdery waste scrap iron, and 500 g of bentonite after crushing, and then screening the bentonite by an 80-mesh filter screen to obtain filtered bentonite. Mixing the obtained powdery palygorskite, powdery zeolite, powdery waste scrap iron and filtered bentonite, stirring uniformly, adding 10 g of lanthanum chloride aqueous solution with the mass concentration of 0.2%, putting into a granulator to obtain a spherulite material with the particle size of 0.8mm, drying the spherulite material at 80 ℃ for 1 hour, sintering at 280 ℃ for 1 hour, and cooling to room temperature to obtain a finished product.
Example 4:
selecting 800 g of palygorskite according to a corresponding proportion, crushing the palygorskite, and then screening the palygorskite by a 1500-mesh filter screen to obtain powdery palygorskite, 750 g of zeolite, crushing the palygorskite, and then screening the palygorskite by a 700-mesh filter screen to obtain powdery zeolite, 680 g of waste scrap iron, crushing the waste scrap iron, and then screening the crushed waste scrap iron by a 100-mesh filter screen to obtain powdery waste scrap iron, and 500 g of bentonite, crushing the bentonite, and then screening the crushed bentonite by. Mixing the obtained powdery palygorskite, powdery zeolite, powdery waste scrap iron and filtered bentonite, uniformly stirring, adding 60 g of a lanthanum chloride aqueous solution with the mass concentration of 0.5%, putting into a granulator to obtain a spherulite material with the particle size of 5mm, drying the spherulite material at 200 ℃ for 5 hours, sintering at 800 ℃ for 5 hours, and cooling to room temperature to obtain a finished product.
Example 5:
selecting 400 g of palygorskite according to a corresponding proportion, crushing, and then screening through a 500-mesh filter screen to obtain powdery palygorskite, 300 g of zeolite, crushing, and then screening through a 180-mesh filter screen to obtain powdery zeolite, 280 g of waste scrap iron is crushed, and then screening through a 50-mesh filter screen to obtain powdery waste scrap iron, and 300 g of bentonite, crushing, and then screening through a 120-mesh filter screen to obtain filtered bentonite. Mixing the obtained powdery palygorskite, powdery zeolite, powdery waste scrap iron and filtered bentonite, stirring uniformly, adding 20 g of a lanthanum chloride aqueous solution with the mass concentration of 0.2%, putting the mixture into a granulator to obtain a spherulite material with the particle size of 1mm, drying the spherulite material at 95 ℃ for 1.5 hours, sintering the material at 350 ℃ for 1.5 hours, and cooling the material to room temperature to obtain a finished product.
Example 6:
selecting 400 g of palygorskite according to a corresponding proportion, crushing, and then screening through a 1200-mesh filter screen to obtain powdery palygorskite, 300 g of zeolite, crushing, then screening through a 500-mesh filter screen to obtain powdery zeolite, 380 g of waste scrap iron, crushing, then screening through a 95-mesh filter screen to obtain powdery waste scrap iron, and 300 g of bentonite, crushing, and then screening through a 360-mesh filter screen to obtain filtered bentonite. Mixing the obtained powdery palygorskite, powdery zeolite, powdery waste scrap iron and filtered bentonite, stirring uniformly, adding 50 g of lanthanum chloride aqueous solution with the mass concentration of 0.5%, putting into a granulator to obtain a spherulite material with the particle size of 4.5mm, drying the spherulite material at 150 ℃ for 4 hours, sintering at 720 ℃ for 3 hours, and cooling to room temperature to obtain a finished product.
Example 7:
660 g of palygorskite is selected according to a corresponding proportion, crushed and then filtered by a 500-mesh filter screen to obtain powdery palygorskite, 550 g of zeolite is crushed and then filtered by a 180-mesh filter screen to obtain powdery zeolite, 430 g of waste scrap iron is crushed and then filtered by a 50-mesh filter screen to obtain powdery waste scrap iron, 480 g of bentonite is crushed and then filtered by a 120-mesh filter screen to obtain filtered bentonite. Mixing the obtained powdery palygorskite, powdery zeolite, powdery waste scrap iron and filtered bentonite, stirring uniformly, adding 20 g of a lanthanum chloride aqueous solution with the mass concentration of 0.2%, putting the mixture into a granulator to obtain a spherulite material with the particle size of 1mm, drying the spherulite material at 95 ℃ for 1.5 hours, sintering the material at 350 ℃ for 1.5 hours, and cooling the material to room temperature to obtain a finished product.
Example 8:
660 g of palygorskite is selected according to a corresponding proportion, crushed and then filtered by a 1200-mesh filter screen to obtain powdery palygorskite, 550 g of zeolite is crushed and then filtered by a 500-mesh filter screen to obtain powdery zeolite, 430 g of waste scrap iron is crushed and then filtered by a 95-mesh filter screen to obtain powdery waste scrap iron, 480 g of bentonite is crushed and then filtered by a 360-mesh filter screen to obtain filtered bentonite. Mixing the obtained powdery palygorskite, powdery zeolite, powdery waste scrap iron and filtered bentonite, stirring uniformly, adding 50 g of lanthanum chloride aqueous solution with the mass concentration of 0.5%, putting into a granulator to obtain a spherulite material with the particle size of 1mm, drying the spherulite material for 4 hours at 150 ℃, sintering for 2 hours at 720 ℃, and cooling to room temperature to obtain a finished product.
Example 9:
selecting 550 g of palygorskite according to a corresponding proportion, crushing the palygorskite, and then screening the palygorskite by a 800-mesh filter screen to obtain powdery palygorskite, crushing 350 g of zeolite, and then screening the palygorskite by a 280-mesh filter screen to obtain powdery zeolite, crushing 300 g of waste scrap iron, and then screening the crushed waste scrap iron by a 60-mesh filter screen to obtain powdery waste scrap iron, crushing 360 g of bentonite, and then screening the crushed bentonite by a 150-mesh filter screen to obtain filtered bentonite. Mixing the obtained powdery palygorskite, powdery zeolite, powdery waste scrap iron and filtered bentonite, uniformly stirring, adding 30 g of a lanthanum chloride aqueous solution with the mass concentration of 0.2%, putting the mixture into a granulator to obtain a spherulite material with the particle size of 1mm, drying the spherulite material at 105 ℃ for 2 hours, sintering the material at 450 ℃ for 1.5 hours, and cooling the material to room temperature to obtain a finished product.
Example 10:
selecting 550 g of palygorskite according to a corresponding proportion, crushing the palygorskite, and then screening the palygorskite by a 100-mesh filter screen to obtain powdery palygorskite, crushing 350 g of zeolite, and then screening the palygorskite by a 400-mesh filter screen to obtain powdery zeolite, crushing 300 g of waste scrap iron, and then screening the crushed waste scrap iron by a 80-mesh filter screen to obtain powdery waste scrap iron, crushing 360 g of bentonite, and then screening the crushed bentonite by a 280-mesh filter screen to obtain filtered bentonite. Mixing the obtained powdery palygorskite, powdery zeolite, powdery waste scrap iron and filtered bentonite, uniformly stirring, adding 40 g of a lanthanum chloride aqueous solution with the mass concentration of 0.5%, putting into a granulator to obtain a spherulite material with the particle size of 3mm, drying the spherulite material at 120 ℃ for 3 hours, sintering at 550 ℃ for 2.5 hours, and cooling to room temperature to obtain a finished product.
The rolling type granulation mode of the disk granulator selected for granulation in the specific implementation process of the black and odorous water body sediment in-situ repair material provided by the invention is that the selection and granulation modes of the granulator can be set correspondingly according to the actual application place and the actually selected granulator, granulation can be completed, and the contact surface of the specific surface area of the spherical particle material can be promoted to be the largest by the product obtained through granulation, so that the protection scope of the invention is provided.
In the drying process, the drying oven is selected for drying, and meanwhile, in the specific implementation process, the drying oven is used in an air-isolated or nitrogen environment, the selection of the drying mechanical structure, the selection of the environment and the like can be correspondingly set according to the actual situation, and the method is not limited to the above mode, and all the purposes of drying can be achieved, and the method belongs to the protection scope of the invention.
In the sintering process, the sintering is performed in a high-temperature furnace under the condition of air isolation, and the selection of the sintering mechanical structure, the selection of the environment and the like can be correspondingly set according to the actual situation, and the method is not limited to the above mode, and all the purposes of achieving the sintering belong to the protection scope of the invention.
The black and odorous water body sediment in-situ repair material that above-mentioned provided at the in-process of in-service use, the accessible spills repair material evenly in black and odorous water, and gravity subsides in the river course sediment, rebuilds the microbial ecological environment of sediment, improves the survival condition of microorganism in the sediment, and the degradation of pollutant in the sediment is accelerated, and the sediment decrement, dephosphorization denitrogenation to reduce the endogenous pollution of black ugly water.
Examples of the experiments
Subject: a river with slow flow rate and a plurality of drainage pipelines converged is selected as an experimental object.
The experimental method comprises the following steps: the subjects were treated with the product prepared in example 10 provided above.
The experimental detection indexes are as follows: the test was carried out by using the test subjects 10 days, 15 days and 25 days after example 10.
The results are shown in the following table:
table 1 in situ repair materials treatment test table
The data show that the overall treatment effect of the experimental object is increased after the treatment of the product prepared in the example 10 provided above, and the dry weight of the sludge, the total nitrogen content, the ammonia nitrogen content and the total phosphorus content are all in a trend of being remarkably reduced along with the treatment time.
The black and odorous water body bottom mud in-situ restoration material provided by the invention is prepared by utilizing various raw materials which have good dephosphorization and denitrification effects, extremely strong slow release effects and rich sources. The in-situ remediation material can change the anaerobic environment of microorganisms in the bottom sludge into an anaerobic-facultative-aerobic system by improving the living environment of the microorganisms in the bottom sludge, so that the decomposition speed of the microorganisms on organic matters in the bottom sludge and the denitrification and dephosphorization effects are improved, and the amount of the bottom sludge is reduced in situ; and the phosphorus in the bottom mud can be effectively fixed by utilizing the phosphorus fixing components in the raw materials, so that the phosphorus is prevented from being released into the water body again. Thereby achieving the effects of effectively reducing endogenous pollution, accelerating the degradation of bottom mud pollutants, reducing the amount of sludge in black and odorous water, improving the current situation of water and having lasting treatment effect. The preparation method has the advantages of simple operation process, less equipment required for operation, low requirement on operators, low cost, effective reduction of the loss of human resources, material resources and economic resources, and suitability for industrial production and popularization.
While particular embodiments of the present invention have been illustrated and described, it will be appreciated that the present invention is not limited to the above-described alternative embodiments, and that various other forms of product may be devised by anyone in light of the present invention. The foregoing detailed description should not be construed as limiting the scope of the invention, and those skilled in the art will understand that various modifications can be made to the technical solutions described in the foregoing embodiments, or some or all of the technical features can be equivalently replaced, without departing from the spirit and scope of the invention, and at the same time, such modifications or replacements do not cause the essence of the corresponding technical solutions to depart from the scope of the technical solutions of the embodiments of the invention; the scope of the invention should be determined with reference to the appended claims, and the description should be construed to interpret the claims.
Claims (10)
1. The black and odorous water body sediment in-situ repair material is characterized by being prepared from the following raw materials in parts by mass:
800 portions of natural porous material 200-;
preferably, the repair material is mainly prepared from the following raw materials in parts by mass:
660 parts of natural porous material, 550 parts of zeolite 300, 430 parts of iron powder 280, 480 parts of bentonite 300 and 20-50 parts of wetting agent;
further preferably, the repair material is mainly prepared from the following raw materials in parts by mass:
550 parts of natural porous material, 350 parts of zeolite, 300 parts of iron powder, 360 parts of bentonite and 30-40 parts of wetting agent.
2. The black and odorous water body sediment in-situ remediation material of claim 1, wherein the natural porous material comprises one or more of palygorskite and montmorillonite.
3. The in-situ repair material for the sediment of the black and odorous water body as claimed in claim 1, wherein the zeolite comprises one or more of analcime, turbidilite, phillipsite, natrolite, mordenite, heulandite, clinoptilolite, chabazite and faujasite.
4. The black and odorous water body sediment in-situ remediation material of claim 1, wherein the iron powder comprises one or more of scrap iron, iron ore powder and fine iron powder.
5. The black odorous water body sediment in-situ remediation material as claimed in claim 1, wherein the wetting agent comprises a rare earth material; preferably, the rare earth material comprises a lanthanide rare earth material; further preferably, the lanthanide rare earth material includes lanthanum chloride;
further preferably, the wetting agent is a lanthanum chloride aqueous solution, and the mass concentration of the lanthanum chloride aqueous solution is 0.2% -0.5%.
6. The preparation method of the black and odorous water body sediment in-situ remediation material according to claim 1, wherein the preparation method comprises the steps of respectively selecting the natural porous material, the zeolite, the iron powder and the bentonite according to corresponding proportions, crushing, sieving, mixing, uniformly stirring, adding the wetting agent, granulating, drying, sintering, and cooling to room temperature to obtain a finished product.
7. The preparation method of the black and odorous water body bottom mud in-situ remediation material as claimed in claim 6, characterized in that the natural porous material is sieved through a sieve of 1500 meshes 300-;
preferably, the zeolite is sieved by a 100-700 mesh sieve, preferably by a 180-500 mesh sieve, and further preferably by a 280-400 mesh sieve;
preferably, the iron powder is sieved by a 30-100 mesh sieve, preferably a 50-95 mesh sieve, and further preferably a 60-80 mesh sieve;
preferably, the bentonite is sieved by a sieve with 80-450 meshes, preferably a sieve with 120-mesh and 360-mesh, and further preferably a sieve with 150-mesh and 280-mesh.
8. The preparation method of the black and odorous water body sediment in-situ remediation material according to claim 6, wherein the granulation particle size is 0.8-5mm, preferably 1-4.5mm, and further preferably 1-3 mm.
9. The method for preparing the black and odorous water body sediment in-situ remediation material according to claim 6, wherein the drying temperature is 80-200 ℃, and the drying time is 1-5 hours;
preferably, the drying temperature is 95-150 ℃, and the drying time is 1.5-4 hours;
further preferably, the drying temperature is 105-120 ℃, and the drying time is 2-3 hours.
10. The method for preparing the black and odorous water body bottom mud in-situ remediation material as claimed in claim 6, wherein the sintering temperature is 280 ℃ and 800 ℃, and the sintering time is 1-5 hours;
preferably, the sintering temperature is 350-720 ℃, and the sintering time is 1.5-3 hours;
further preferably, the sintering temperature is 450-550 ℃, and the sintering time is 2-2.5 hours.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112159061A (en) * | 2020-09-07 | 2021-01-01 | 中国环境科学研究院 | Method for accurately positioning and in-situ treating pollutants on mud-water interface |
| CN113121080A (en) * | 2021-04-25 | 2021-07-16 | 四川瑞泽科技有限责任公司 | Biostimulation sediment repairing agent and preparation method thereof |
| CN114505063A (en) * | 2022-02-25 | 2022-05-17 | 西安建筑科技大学 | River and lake bottom mud covering material, preparation method and application |
| CN114700033A (en) * | 2020-12-07 | 2022-07-05 | 中国环境科学研究院 | Nitrogen and phosphorus control and aquatic plant habitat restoration material and preparation method and application thereof |
| CN116018997A (en) * | 2023-02-02 | 2023-04-28 | 中交疏浚技术装备国家工程研究中心有限公司 | Method for improving high-phosphorus pollution post-dredging dehydration sediment to be used as greening planting soil |
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| CN108046409A (en) * | 2017-11-15 | 2018-05-18 | 同济大学 | A kind of quick startup function carbon source filler of double immobilizations and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112159061A (en) * | 2020-09-07 | 2021-01-01 | 中国环境科学研究院 | Method for accurately positioning and in-situ treating pollutants on mud-water interface |
| CN112159061B (en) * | 2020-09-07 | 2022-10-28 | 中国环境科学研究院 | Method for accurately positioning and in-situ treating pollutants on mud-water interface |
| CN114700033A (en) * | 2020-12-07 | 2022-07-05 | 中国环境科学研究院 | Nitrogen and phosphorus control and aquatic plant habitat restoration material and preparation method and application thereof |
| CN113121080A (en) * | 2021-04-25 | 2021-07-16 | 四川瑞泽科技有限责任公司 | Biostimulation sediment repairing agent and preparation method thereof |
| CN114505063A (en) * | 2022-02-25 | 2022-05-17 | 西安建筑科技大学 | River and lake bottom mud covering material, preparation method and application |
| CN116018997A (en) * | 2023-02-02 | 2023-04-28 | 中交疏浚技术装备国家工程研究中心有限公司 | Method for improving high-phosphorus pollution post-dredging dehydration sediment to be used as greening planting soil |
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