CN106186250B - Phosphorus removal material and preparation method thereof - Google Patents
Phosphorus removal material and preparation method thereof Download PDFInfo
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- CN106186250B CN106186250B CN201610547910.0A CN201610547910A CN106186250B CN 106186250 B CN106186250 B CN 106186250B CN 201610547910 A CN201610547910 A CN 201610547910A CN 106186250 B CN106186250 B CN 106186250B
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
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Abstract
The invention provides a phosphorus removal material and a preparation method thereof. The phosphorus removal material disclosed by the invention coats the aggregate with the phosphorus removal surface layer with the phosphorus removal effect, so that phosphorus in a water body can be effectively removed by mixing the phosphorus removal material with phosphorus-containing sewage, the technical problems that the phosphorus removal effect is poor, secondary pollution is easily caused and the like in the phosphorus removal method in the prior art can be further solved, and the phosphorus removal material has the advantages of good phosphorus removal effect, high phosphorus removal efficiency, no secondary pollution and the like. Meanwhile, the invention also provides a preparation method of the phosphorus removal material, in the method, the phosphorus removal material is prepared by mixing the raw material phosphorus removal compound and the aggregate and then crushing and screening the mixture, and the phosphorus removal material has the advantages of simple and convenient preparation method, uniform structure, good phosphorus removal effect and the like.
Description
Technical Field
The invention relates to the field of phosphorus removal, and particularly relates to a phosphorus removal material and a preparation method thereof.
Background
With the continuous development of industrialization, people increasingly use a series of phosphorus-containing chemical reagents such as phosphorus-containing pesticides and phosphorus-containing detergents, the use of the chemical reagents improves the yield of grains, and simultaneously, people can live cleaner and bring convenience to people.
However, the phosphorus content of water bodies is increasing due to the overuse of phosphorus-containing agents and the increasing emission of phosphorus-containing agents without treatment. Excessive phosphorus levels in water can eutrophicate the water and lead to a series of serious environmental consequences: aquatic organisms and microorganisms which grow depending on phosphorus in water bodies such as coastal water bodies, rivers, lakes, marshes and the like can be abnormally propagated and form red tides; the mass-propagated microorganisms consume the dissolved oxygen on the surface layer of the water body, so that the organisms on the lower layer of the water body die, and the ecological circulation system in the water body is damaged.
In order to solve the environmental problem caused by the over-high content of phosphorus in the water body, in the prior art, a plurality of methods are also adopted to adsorb or react the phosphorus in the water body.
However, the existing water body phosphorus removal method has many disadvantages, such as high phosphorus removal cost, poor phosphorus removal effect and the like; meanwhile, although the existing phosphorus removal method can remove a small amount of phosphorus in the water body, the existing method can also cause large increase of sludge production while removing phosphorus, so that the phosphorus removal material often generates secondary pollution when the water body is treated. For example, in the process of removing phosphorus from black and odorous water, in order to treat the over-standard phosphorus in the black and odorous water, coagulation sedimentation is often adopted, but the amount of sludge generated is very large, and a large amount of work for treating secondary pollution is brought, and a large amount of cost is spent.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The first purpose of the invention is to provide a phosphorus removal material, wherein a phosphorus removal surface layer with a phosphorus removal effect is coated on aggregate, so that phosphorus in a water body can be effectively removed by mixing the phosphorus removal material and phosphorus-containing sewage, and the technical problems of poor phosphorus removal effect, easiness in secondary pollution and the like in a phosphorus removal method in the prior art can be solved. The phosphorus removal material has the advantages of good phosphorus removal effect, high phosphorus removal efficiency, no secondary pollution and the like.
The second purpose of the invention is to provide a preparation method of the phosphorus removal material, in the method, the phosphorus removal material is prepared by mixing the raw material phosphorus removal compound and the aggregate and then crushing and screening the mixture, and the preparation method has the advantages of simplicity and convenience, uniform structure of the prepared phosphorus removal material, good phosphorus removal effect and the like.
In order to achieve the above purpose of the present invention, the following technical solutions are adopted:
a dephosphorization material comprises aggregate and a dephosphorization surface layer coating the aggregate; wherein the dephosphorization surface layer is a mixed dephosphorization surface layer formed by one or more compounds of hydrated aluminum silicate, hydrated iron silicate, calcium carbonate and sponge iron.
In the invention, the aggregate is coated with the dephosphorization surface layer with dephosphorization effect, so that the phosphorus in the water body can be effectively removed by mixing the dephosphorization material and the phosphorus-containing sewage, and the method has the advantages of good dephosphorization effect, high dephosphorization efficiency, no secondary pollution and the like.
Optionally, in the invention, the aggregate is one or a mixture of more of quartz sand, slag, ceramsite and diatomite.
According to the invention, by selecting and adjusting the aggregate material and using the material with good mechanical strength and higher specific surface area as the aggregate material, the mechanical property of the phosphorus removal material can be ensured, and the phosphorus removal efficiency can be improved.
Optionally, in the present invention, the material further comprises a cured adhesive layer; and the curing adhesive layer is arranged between the aggregate and the dephosphorization surface layer and is used for bonding and fixing the aggregate and the dephosphorization surface layer.
In the invention, the phosphorus removal material has a more stable structure by further arranging the fixed bonding layer, and the phosphorus removal surface layer can not fall off in the using process.
Optionally, in the present invention, the phosphorus removal surface layer is a surface layer formed by hydrated aluminum silicate or hydrated iron silicate, and the cured adhesive layer is a mixed cured adhesive layer formed by one or more of aliphatic amine, alicyclic amine, aromatic amine, polyamide, or acid anhydride; the phosphorus removal surface layer is a surface layer formed by calcium carbonate, and the curing bonding layer is formed by hexamethylenetetramine; the phosphorus removal surface layer is a layer formed by sponge iron, and the curing bonding layer is a mixed curing bonding layer formed by one or two of dibutyl tin dilaurate or N, N, N ', N' -tetramethyl guanidine salt.
In the invention, through further selection and adjustment of the material of the solidified bonding layer and selection of different fixed bonding layers aiming at different phosphorus removal surface layers, the structural stability of the phosphorus removal material can be further improved.
Optionally, in the present invention, the aliphatic amine, the ester cyclic amine, or the aromatic amine is a tertiary amine.
Meanwhile, the invention also provides a preparation method of the phosphorus removal material, and specifically, the method comprises the following steps:
(1) heating the raw material aggregate to 50-400 ℃;
(2) adding one or more of the raw materials of hydrated aluminum silicate, hydrated iron silicate, calcium carbonate and sponge iron into the heated raw material aggregate, and uniformly stirring to enable one or more of the raw materials of hydrated aluminum silicate, hydrated iron silicate, calcium carbonate and sponge iron to coat the aggregate;
(3) and crushing and screening the obtained coated aggregate to obtain the phosphorus removal material.
In the method, the raw material phosphorus removal compound and the aggregate are mixed and then crushed and screened to prepare the phosphorus removal material, so that the method has the advantages of simple and convenient preparation method, uniform structure of the prepared phosphorus removal material, good phosphorus removal effect and the like.
Optionally, in the invention, the particle size of the raw material aggregate is 6-30 meshes.
In the invention, the particle size of the raw material aggregate is selected and optimized, so that the phosphorus removal material with a proper specific surface area can be further prepared, and the phosphorus removal efficiency is further improved.
Optionally, in the invention, the particle size of the raw material aggregate is 10-20 meshes.
Optionally, in the present invention, the mass gram of one or more of the raw materials of hydrated aluminum silicate, hydrated iron silicate, calcium carbonate and sponge iron is 1-8% of the mass gram of the raw material aggregate, and may be, for example, but not limited to, 2%, 3%, 4%, 5%, 6%, 7%, or the like.
According to the invention, through selection and adjustment of the dosage of the phosphorus removal material, the phosphorus removal material can effectively coat the raw material aggregate, and meanwhile, waste of the raw material caused by excessive dosage of the phosphorus removal material is avoided.
Optionally, in the present invention, the heating temperature in step (1) is 100-240 ℃, and for example, but not limited to, 115 ℃, 120 ℃, 125 ℃, 130 ℃, 135 ℃, 140 ℃, 150 ℃, 155 ℃, 160 ℃, 165 ℃, 170 ℃, 175 ℃, 180 ℃, 185 ℃, 190 ℃, 195 ℃, 200 ℃, 205 ℃, 210 ℃, 215 ℃, 220 ℃, 225 ℃, 230 ℃ or 235 ℃, and the like
According to the invention, through selection and adjustment of the heating temperature, the raw aggregate can be fully heated and activated, and meanwhile, the damage of the aggregate structure caused by overhigh heating temperature can be avoided.
Optionally, in the present invention, the method further includes a step of adding one or more of aliphatic amine, alicyclic amine, aromatic amine, polyamide, anhydride hexamethylene tetramine, dibutyl tin dilaurate or N, N' -tetramethylguanidine salt to the heated aggregate to form a cured adhesive layer between the aggregate of the phosphorus removal material and the phosphorus removal surface layer.
Optionally, in the present invention, after the aggregate is heated, one or more of the aliphatic amine, alicyclic amine, aromatic amine, polyamide, anhydride hexamethylene tetramine, dibutyl tin dilaurate, or N, N' -tetramethylguanidine salt is added, and stirred uniformly; then, one or more of the raw materials of hydrated aluminum silicate, hydrated iron silicate, calcium carbonate and sponge iron are added and stirred uniformly, so that the aggregate can be coated by one or more of the raw materials of hydrated aluminum silicate, hydrated iron silicate, calcium carbonate and sponge iron.
Optionally, in the present invention, after the aggregate is heated, one or more of the aliphatic amine, the alicyclic amine, the aromatic amine, the polyamide, the anhydride hexamethylenetetramine, the dibutyl tin dilaurate or the N, N' -tetramethylguanidine salt, and one or more of the raw materials of hydrated aluminum silicate, hydrated iron silicate, calcium carbonate and sponge iron are added at the same time, and are stirred together uniformly, so that the aggregate can be coated by one or more of the raw materials of hydrated aluminum silicate, hydrated iron silicate, calcium carbonate and sponge iron.
Furthermore, the invention also provides a phosphorus removal method, wherein the phosphorus removal material used in the invention is used in the method; furthermore, the phosphorus removal material can be used as a filter material to form a filter layer, and the water body to be treated passes through the filter layer to realize the purpose of water body phosphorus removal by filtration.
Compared with the prior art, the invention has the beneficial effects that:
(1) in the invention, the aggregate is coated with the dephosphorization surface layer with dephosphorization effect, so that the phosphorus in the water body can be effectively removed by mixing the dephosphorization material and the phosphorus-containing sewage, and the method has the advantages of good dephosphorization effect, high dephosphorization efficiency, no secondary pollution and the like; meanwhile, the phosphorus removal material has good water resistance, long phosphorus removal time and good social and economic benefits;
(2) according to the phosphorus removal material, the raw material aggregate material, the particle size and the material of the bonding and fixing layer are selected and optimized, so that the phosphorus removal material has good mechanical properties and also has good structural integrity and high phosphorus removal performance; meanwhile, the phosphorus removal material can be widely applied to black and odorous water, sewage treatment plants, river and lake treatment and landscape water systems, and can well protect the ecological environment of the water;
(3) in the method, the material with high-efficiency phosphorus removal performance can be conveniently and quickly prepared by mixing the raw material phosphorus removal compound with the aggregate, crushing and screening to prepare the phosphorus removal material, and further adjusting and optimizing the heating temperature and the specific operation steps.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to examples, but it will be understood by those skilled in the art that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
Examples 1 to 4
(1) Heating quartz sand particles with the particle sizes of 6 meshes, 10 meshes, 20 meshes and 30 meshes to 50 ℃, wherein the weight of the four parts of the quartz sand particles is 100 g;
(2) under the heating condition, respectively adding 4g of raw material hydrated aluminum silicate and a proper amount of acid anhydride into each group of quartz sand particles, and uniformly stirring to ensure that the raw material hydrated aluminum silicate can coat the quartz sand particles;
(3) and cooling after the reaction, and crushing and screening the obtained coated quartz sand particles to obtain the phosphorus removal material of the embodiment 1-4.
Wherein, 6 meshes of raw material quartz sand particles are used in example 1, 10 meshes of raw material quartz sand particles are used in example 2, 20 meshes of raw material quartz sand particles are used in example 3, and 30 meshes of raw material quartz sand particles are used in example 4.
Examples 5 to 8
(1) Heating quartz sand particles with the particle sizes of 6 meshes, 10 meshes, 20 meshes and 30 meshes to 400 ℃ respectively, wherein the weight of each of the four parts is 100 g;
(2) under the heating condition, 4g of raw material hydrated ferric silicate and a proper amount of triethylamine are added into the quartz sand particles and are uniformly stirred, so that the raw material hydrated ferric silicate can coat the quartz sand particles;
(3) and cooling after the reaction, and crushing and screening the obtained coated quartz sand particles to obtain the phosphorus removal material of the embodiment 5-8.
Wherein, 6 mesh of the raw material quartz sand particles is example 5, 10 mesh of the raw material quartz sand particles is example 6, 20 mesh of the raw material quartz sand particles is example 7, and 30 mesh of the raw material quartz sand particles is example 8.
Examples 9 to 12
(1) Heating quartz sand particles with the particle sizes of 6 meshes, 10 meshes, 20 meshes and 30 meshes to 100 ℃ respectively, wherein the weight of each of the four parts is 100 g;
(2) under the heating condition, adding 4g of raw material calcium carbonate and a proper amount of hexamethylenetetramine into the quartz sand particles, and uniformly stirring to ensure that the raw material calcium carbonate can coat the quartz sand particles;
(3) and cooling after the reaction, and crushing and screening the obtained coated quartz sand particles to obtain the phosphorus removal material of the embodiment 9-12.
Wherein, 6 mesh of the raw material quartz sand particles is example 9, 10 mesh of the raw material quartz sand particles is example 10, 20 mesh of the raw material quartz sand particles is example 11, and 30 mesh of the raw material quartz sand particles is example 12.
Examples 13 to 16
(1) Heating quartz sand particles which are 100g in weight and 6 meshes, 10 meshes, 20 meshes and 30 meshes in particle size to 240 ℃;
(2) under the heating condition, 4g of raw material sponge iron and a proper amount of dibutyl tin dilaurate are added into the quartz sand particles and uniformly stirred, so that the raw material sponge iron can coat the quartz sand particles;
(3) and cooling after the reaction, and crushing and screening the obtained coated quartz sand particles to obtain the phosphorus removal material of the embodiment 13-16.
Wherein, 6 meshes of the raw material quartz sand particles are example 13, 10 meshes of the raw material quartz sand particles are example 14, 20 meshes of the raw material quartz sand particles are example 15, and 30 meshes of the raw material quartz sand particles are example 16.
Examples 17 to 20
(1) Heating slag with the particle sizes of 6 meshes, 10 meshes, 20 meshes and 30 meshes to 240 ℃ respectively, wherein the four parts of slag are 100g in weight;
(2) under the heating condition, adding 8g of raw material sponge iron and a proper amount of dibutyl tin dilaurate into the slag, and uniformly stirring to enable the raw material sponge iron to coat the slag;
(3) and cooling after the reaction, and crushing and screening the obtained coated slag to obtain the phosphorus removal material of the embodiment 17-20.
Among them, example 17 was the raw material slag of 6 mesh, example 18 was the raw material slag of 10 mesh, example 19 was the raw material slag of 20 mesh, and example 20 was the raw material slag of 30 mesh.
Examples 21 to 24
(1) Heating slag with the particle sizes of 6 meshes, 10 meshes, 20 meshes and 30 meshes to 240 ℃ respectively, wherein the four parts of slag are 100g in weight;
(2) under the heating condition, adding 4g of raw material sponge iron and a proper amount of dibutyl tin dilaurate into the slag, and uniformly stirring to enable the raw material sponge iron to coat the slag;
(3) and cooling after the reaction, and crushing and screening the obtained coated slag to obtain the phosphorus removal material of the embodiment 21-24.
Among them, example 21 was the raw material slag of 6 meshes, example 22 was the raw material slag of 10 meshes, example 23 was the raw material slag of 20 meshes, and example 24 was the raw material slag of 30 meshes.
Examples 25 to 28
(1) Heating slag with the particle sizes of 6 meshes, 10 meshes, 20 meshes and 30 meshes to 240 ℃ respectively, wherein the four parts of slag are 100g in weight;
(2) under the heating condition, 1g of raw material sponge iron and a proper amount of dibutyl tin dilaurate are added into the slag and stirred uniformly, so that the raw material sponge iron can coat the slag;
(3) and cooling after the reaction, and crushing and screening the obtained coated slag to obtain the phosphorus removal material of the embodiment 25-28.
Among them, example 25 was the raw material slag of 6 mesh, example 26 was the raw material slag of 10 mesh, example 27 was the raw material slag of 20 mesh, and example 28 was the raw material slag of 30 mesh.
Examples 29 to 32
(1) Heating slag with the particle sizes of 6 meshes, 10 meshes, 20 meshes and 30 meshes to 160 ℃ respectively, wherein the four parts of slag are 100g in weight;
(2) under the heating condition, adding 8g of raw material sponge iron and a proper amount of dibutyl tin dilaurate into the slag, and uniformly stirring to enable the raw material sponge iron to coat the slag;
(3) and cooling after the reaction, and crushing and screening the obtained coated slag to obtain the phosphorus removal material of the embodiment 29-32.
Among them, example 29 was the raw material slag of 6 meshes, example 30 was the raw material slag of 10 meshes, example 31 was the raw material slag of 20 meshes, and example 32 was the raw material slag of 30 meshes.
Examples 33 to 36
(1) Heating diatomite with the particle sizes of 6 meshes, 15 meshes, 20 meshes and 30 meshes, wherein the weight of each of the four parts is 100g, to 160 ℃;
(2) under the heating condition, adding 4g of raw material sponge iron and a proper amount of dibutyl tin dilaurate into the slag, and uniformly stirring to enable the raw material sponge iron to coat the diatomite;
(3) and cooling after the reaction, and crushing and screening the obtained coated diatomite to obtain the phosphorus removal material of the embodiment 33-36.
Among these examples, 6 mesh as the raw material diatomaceous earth was example 33, 10 mesh as the raw material diatomaceous earth was example 34, 20 mesh as the raw material diatomaceous earth was example 35, and 30 mesh as the raw material diatomaceous earth was example 36.
Examples 37 to 40
(1) Heating diatomite with the particle sizes of 6 meshes, 15 meshes, 20 meshes and 30 meshes, wherein the weight of each of the four parts of diatomite is 100g, and the four parts of diatomite are heated to 240 ℃;
(2) under the heating condition, adding 8g of raw material hydrated aluminum silicate and a proper amount of aromatic amine into slag, and uniformly stirring to enable the raw material hydrated aluminum silicate to coat the diatomite;
(3) and cooling after the reaction, and crushing and screening the obtained coated diatomite to obtain the phosphorus removal material of the embodiment 37-40.
Among these examples, 6 mesh as the raw material diatomaceous earth was example 37, 10 mesh as the raw material diatomaceous earth was example 38, 20 mesh as the raw material diatomaceous earth was example 39, and 30 mesh as the raw material diatomaceous earth was example 40.
Examples 41 to 44
(1) Heating diatomite with the particle sizes of 6 meshes, 15 meshes, 20 meshes and 30 meshes, wherein the weight of each of the four parts is 100g, to 100 ℃;
(2) under the heating condition, 1g of raw material calcium carbonate and a proper amount of hexamethylenetetramine are added into diatomite and uniformly stirred, so that the diatomite can be coated by the raw material calcium carbonate;
(3) and cooling after the reaction, and crushing and screening the obtained coated diatomite to obtain the phosphorus removal material of the embodiment 41-44.
Among them, 6 mesh as the raw material diatomaceous earth was example 41, 10 mesh as the raw material diatomaceous earth was example 42, 20 mesh as the raw material diatomaceous earth was example 43, and 30 mesh as the raw material diatomaceous earth was example 44.
Examples 45 to 48
(1) Heating ceramsite with the particle sizes of 6 meshes, 15 meshes, 20 meshes and 30 meshes, wherein the weight of the ceramsite is 100g, and the ceramsite is heated to 160 ℃;
(2) under the heating condition, 4g of raw material sponge iron and a proper amount of N, N, N ', N' -tetramethylguanidine salt are added into the slag and stirred uniformly, so that the ceramsite can be coated by the raw material sponge iron;
(3) and cooling after the reaction, and crushing and screening the obtained coated ceramsite to obtain the phosphorus removal material of the embodiment 45-48.
Wherein the raw material ceramsite is 6 meshes in example 45, the raw material ceramsite is 10 meshes in example 46, the raw material ceramsite is 20 meshes in example 47, and the raw material ceramsite is 30 meshes in example 48.
Examples 49 to 52
(1) Heating ceramsite with the particle sizes of 6 meshes, 15 meshes, 20 meshes and 30 meshes, wherein the weight of the ceramsite is 100g in four parts, to 240 ℃;
(2) under the heating condition, adding 8g of raw material aluminum silicate hydrate and a proper amount of polyamide into the ceramsite, and uniformly stirring to ensure that the raw material aluminum silicate hydrate can coat the ceramsite;
(3) and cooling after the reaction, and crushing and screening the obtained coated ceramsite to obtain the phosphorus removal material of the embodiment 37-40.
Wherein the raw material ceramsite is 6 meshes in the example 49, the raw material ceramsite is 10 meshes in the example 50, the raw material ceramsite is 20 meshes in the example 51, and the raw material ceramsite is 30 meshes in the example 52.
Examples 53 to 56
(1) Heating ceramsite with the particle sizes of 6 meshes, 15 meshes, 20 meshes and 30 meshes, wherein the weight of the ceramsite is 100g, and the ceramsite is heated to 100 ℃;
(2) under the heating condition, 1g of raw material calcium carbonate and a proper amount of hexamethylenetetramine are added into the ceramsite and are uniformly stirred, so that the ceramsite can be coated by the raw material calcium carbonate;
(3) and cooling after the reaction, and crushing and screening the obtained coated ceramsite to obtain the phosphorus removal material of the embodiment 41-44.
Wherein the raw material ceramsite is 6 meshes in example 53, the raw material ceramsite is 10 meshes in example 54, the raw material ceramsite is 20 meshes in example 55, and the raw material ceramsite is 30 meshes in example 56.
Experimental example 1
Laying the phosphorus removal materials of the embodiments 1 to 16 with the same height in 16 filter devices with the same shape as a filter layer respectively;
then, 16 parts of phosphorus-containing sewage which is equal in amount and is taken from the same place and the same batch is respectively subjected to phosphorus removal experiments through each filtering device, then the phosphorus content before and after each group of sewage is respectively measured, the phosphorus removal rate of each group of phosphorus removal devices is calculated, and statistics is carried out, wherein the results are as follows:
experimental example 2
Laying the phosphorus removal materials of the examples 17 to 32 with the same height in 16 filter devices with the same shape as a filter layer;
then, 16 parts of phosphorus-containing sewage which is equal in amount and is taken from the same place and the same batch is respectively subjected to phosphorus removal experiments through each filtering device, then the phosphorus content before and after each group of sewage is respectively measured, the phosphorus removal rate of each group of phosphorus removal devices is calculated, and statistics is carried out, wherein the results are as follows:
experimental example 3
Laying the phosphorus removal materials of the embodiments 33 to 44 with the same height in 12 filter devices with the same shape as a filter layer;
then, carrying out phosphorus removal experiments on 12 equal parts of phosphorus-containing sewage which is taken from the same place and the same batch respectively through each filtering device, then respectively measuring the phosphorus content before and after each group of sewage is treated, calculating the phosphorus removal rate of each group of phosphorus removal devices, and counting, wherein the results are as follows:
experimental example 4
Laying the phosphorus removal materials of the embodiments 45-56 with the same height in 12 filter devices with the same shape as a filter layer;
then, carrying out phosphorus removal experiments on 12 equal parts of phosphorus-containing sewage which is taken from the same place and the same batch respectively through each filtering device, then respectively measuring the phosphorus content before and after each group of sewage is treated, calculating the phosphorus removal rate of each group of phosphorus removal devices, and counting, wherein the results are as follows:
the phosphorus removal material can effectively remove phosphorus in water, does not generate any secondary pollution, and is a phosphorus removal reagent with low price and good effect.
While particular embodiments of the present invention have been illustrated and described, it would be obvious that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.
Claims (7)
1. The phosphorus removal material is characterized by comprising aggregate and a phosphorus removal surface layer coating the aggregate;
the material further comprises a cured adhesive layer, wherein the cured adhesive layer is between the aggregate and the phosphorus removal facing;
the phosphorus removal surface layer is a surface layer formed by hydrated aluminum silicate or hydrated iron silicate, and the curing bonding layer is a mixed curing bonding layer formed by one or more of aliphatic amine, alicyclic amine, aromatic amine, polyamide or acid anhydride;
or the phosphorus removal surface layer is a surface layer formed by calcium carbonate, and the curing adhesive layer is formed by hexamethylenetetramine;
or the phosphorus removal surface layer is a layer formed by sponge iron, and the cured bonding layer is a mixed cured bonding layer formed by one or two of dibutyl tin dilaurate or N, N, N ', N' -tetramethyl guanidine salt.
2. The phosphorus removal material of claim 1, wherein the aggregate is one or more of quartz sand, slag, ceramsite and diatomite.
3. The preparation method of the phosphorus removal material as claimed in any one of claims 1 to 2, wherein the method comprises the following steps:
(1) heating the raw material aggregate to 50-400 ℃; adding one or more of aliphatic amine, alicyclic amine, aromatic amine, polyamide and acid anhydride into the heated raw material aggregate, or adding hexamethylene tetramine, or adding one or two of dibutyl tin dilaurate or N, N, N, N ', N' -tetramethyl guanidine salt to form a curing adhesive layer between the aggregate and the phosphorus removal surface layer of the phosphorus removal material;
(2) adding raw materials of hydrated aluminum silicate or hydrated iron silicate, or adding calcium carbonate or adding sponge iron into the heated raw material aggregate, and uniformly stirring to ensure that the aggregate can be coated by the added substances;
(3) and crushing and screening the obtained coated aggregate to obtain the phosphorus removal material.
4. The method according to claim 3, wherein the raw aggregate has a particle size of 6 to 30 mesh.
5. The method according to claim 4, wherein the raw aggregate has a particle size of 10 to 20 mesh.
6. The method according to claim 3, wherein the mass grams of one or more of the raw materials of hydrated aluminum silicate, hydrated iron silicate, calcium carbonate and sponge iron is 1-8% of the mass grams of the raw material aggregate.
7. The method according to claim 3, wherein the temperature of the heating in the step (1) is 100 to 240 ℃.
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| CN107175069B (en) * | 2017-07-27 | 2020-03-27 | 桂林新竹大自然生物材料有限公司 | Modified diatomite water purifying agent and preparation method thereof |
| CN111977772B (en) * | 2020-08-10 | 2021-05-07 | 江苏泉之源环境技术有限公司 | Phosphorus removing agent for treating phosphorization wastewater |
| CN111943341B (en) * | 2020-08-12 | 2023-01-10 | 中冶一局环境科技有限公司 | Phosphorus removal composition and preparation method thereof, phosphorus removal product and preparation method thereof, and phosphorus removal method |
| CN112158937A (en) * | 2020-09-29 | 2021-01-01 | 王威 | Phosphorus removal particle and preparation method thereof |
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|---|---|---|---|---|
| CN101693186A (en) * | 2009-10-16 | 2010-04-14 | 东南大学 | Dephosphorization and denitrification integrated material prepared based on battering method and preparation method thereof |
| CN104828928A (en) * | 2014-02-12 | 2015-08-12 | 同济大学 | Preparation method of filtering material of nitrogen and phosphorus removal bio-filter tank |
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2016
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101693186A (en) * | 2009-10-16 | 2010-04-14 | 东南大学 | Dephosphorization and denitrification integrated material prepared based on battering method and preparation method thereof |
| CN104828928A (en) * | 2014-02-12 | 2015-08-12 | 同济大学 | Preparation method of filtering material of nitrogen and phosphorus removal bio-filter tank |
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