CN111018094A - Preparation method of light biological filter material - Google Patents
Preparation method of light biological filter material Download PDFInfo
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- CN111018094A CN111018094A CN201911364455.0A CN201911364455A CN111018094A CN 111018094 A CN111018094 A CN 111018094A CN 201911364455 A CN201911364455 A CN 201911364455A CN 111018094 A CN111018094 A CN 111018094A
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/1328—Waste materials; Refuse; Residues without additional clay
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
- C04B33/138—Waste materials; Refuse; Residues from metallurgical processes, e.g. slag, furnace dust, galvanic waste
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F2003/001—Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Abstract
The invention relates to the technical field of filter materials, in particular to a preparation method of a light biological filter material; the biological filter material comprises the following components in parts by mass: 60-80 parts of steel slag, 12-18 parts of humic acid, 2-8 parts of ammonium carbonate, 0.6-0.8 part of adhesive and 10-30 parts of water, wherein the preparation method comprises the following steps: (1) weighing the steel slag, the humic acid, the ammonium carbonate and the adhesive according to a proportion, adding water, uniformly mixing, preparing into balls in a ball forming machine, then transferring into a drying oven for drying, then calcining, and cooling to obtain a semi-finished product; (2) and (2) placing the semi-finished biological filter material obtained in the step (1) into nutrient solution to be soaked for 30-45min, and carrying out microbial inoculation for 5-7d to obtain the light biological filter material prepared in the invention, wherein the sewage treatment efficiency per unit volume is improved by 7-8 times compared with that of the conventional filter material, the light biological filter material can meet the environmental-friendly discharge standard, the oxygenation efficiency is high, the energy consumption is saved, and the problem of treatment efficiency reduction caused by uneven material level after the conventional filter material runs for a period of time is solved.
Description
Technical Field
The invention relates to the technical field of filter materials, in particular to a preparation method of a light biological filter material.
Background
The light haydite filter material is one new kind of biomembrane carrier stuffing and has the advantages of light weight, great specific surface area, high adsorption capacity, etc. Is suitable for various types of filter tanks. Compared with quartz sand, the specific surface area is 2-3 times of that of the quartz sand with the same volume, and the porosity is 1.3-2.0 times of that of the quartz sand. Compared with sand filtration, the filter has the advantages of high average filtration speed (20-25m/h), large water yield, long filtration period, low flushing frequency and low flushing strength. It is suitable for the treatment of water supply in cities and towns and industry, and is also suitable for the biochemical treatment (oil removal, iron removal, manganese removal and the like) of waste water in the metallurgical industry, the petroleum industry, the chemical industry and the textile industry. It is not only suitable for various types of common filters, rapid filters, valveless filters, siphon filters, movable washing covers and gravity filters, but also is the best filler for water quality treatment of various high-efficiency purifiers and small-sized water purifiers in villages and towns.
The existing light biological filter material also has the defects of high calcination temperature, small specific surface area, poor hydrophilicity and the like.
Disclosure of Invention
The purpose of the invention is: the method overcomes the defects in the prior art, and provides the preparation method of the light biological filter material with low calcination temperature, large specific surface area and strong hydrophilicity.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a preparation method of a light biological filter material comprises the following components in parts by mass: 60-80 parts of steel slag, 12-18 parts of humic acid, 2-8 parts of ammonium carbonate, 0.6-0.8 part of adhesive and 10-30 parts of water, wherein the preparation method comprises the following steps:
(1) weighing the steel slag, the humic acid, the ammonium carbonate and the adhesive according to a proportion, adding water, uniformly mixing, preparing into balls in a ball forming machine, drying the balls with the diameter of 3-8mm in an oven at the drying temperature of 100-550 ℃ for 45-60min, calcining the balls in a muffle furnace at the calcining temperature of 450-550 ℃ for 2.5-3h, and naturally cooling to room temperature after the calcining to obtain a semi-finished biological filter material;
(2) and (2) soaking the semi-finished biological filter material obtained in the step (1) in a nutrient solution for 30-45min, and inoculating microorganisms for 5-7d to obtain the biofilm-forming biomass filter material.
Furthermore, the steel slag is obtained after screening, deironing and milling, and the milling operation is carried out by adopting a cone crusher and a Raymond mill in sequence.
Further, the average grain size of the steel slag is 1-1.2 mm.
Furthermore, the concentration of the microorganism nutrient solution is 1%, and the molar ratio of C, N, P in the nutrient solution is 100:5-10: 1.
Furthermore, the adhesive is prepared from lignin urea formaldehyde resin through continuous leaching of industrial lignin, hemicellulase treatment and centrifugation.
Further, the solvent for continuous leaching of the industrial lignin is a mixture of toluene and ethanol, and the volume ratio of the toluene to the ethanol is 8.5: 1.
Further, the amount of the hemicellulase added was 1/50 (g/ml).
Further, the temperature of the hemicellulase treatment is 50 ℃, and the temperature is kept constant for 3-4 hours.
The technical scheme adopted by the invention has the beneficial effects that:
the light biological filter material prepared by the invention has high strength and rich pores, and the biological filter material is combined with a biomembrane method, so that the membrane hanging time of the filter material is shortened, and can be reduced by 60 percent.
The light biological filter material prepared by the invention has the advantages that the sewage treatment efficiency per unit volume is improved by 7-8 times compared with that of the conventional filter material, the environment-friendly discharge standard can be met, the oxygenation efficiency is high, the energy consumption is saved, and the problem of treatment efficiency reduction caused by uneven material surface after the conventional filter material runs for a period of time is solved.
The preparation method of the light biological filter material can be used for controlling the particle size, the uniformity, the gradation, the density, the particle shape, the acid solubility, the porosity, the specific surface area, the friction resistance and other aspects in each link of production in the processing and manufacturing process, so that the quality is ensured. Can be widely applied to the aspects of municipal sewage, various industrial waste water and sewage advanced treatment.
Detailed Description
The present invention will now be described in further detail with reference to specific examples.
Example 1
A preparation method of a light biological filter material comprises the following components in parts by mass: 60 parts of steel slag, 12 parts of humic acid, 2 parts of ammonium carbonate, 0.6 part of adhesive and 10 parts of water, wherein the preparation method comprises the following steps:
(1) weighing the steel slag, the humic acid, the ammonium carbonate and the adhesive according to a proportion, adding water, uniformly mixing, preparing into balls in a ball forming machine, drying the balls with the diameter of 3mm in an oven at the drying temperature of 100 ℃ for 45min, calcining the balls in a muffle furnace for 2.5h at the calcining temperature of 450 ℃, and naturally cooling to room temperature after the calcining is finished to obtain a semi-finished biological filter material; the steel slag in the embodiment is obtained by screening, deironing and grinding, wherein the grinding operation is performed by a cone crusher and a Raymond mill in sequence, and the average particle size of the steel slag is 1 mm. In the embodiment, the adhesive is lignin urea-formaldehyde resin, and is prepared by continuously leaching industrial lignin, treating with hemicellulase and centrifuging, wherein the solvent for continuously leaching the industrial lignin is a mixture of toluene and ethanol, the volume ratio of the toluene to the ethanol is 8.5:1, the addition amount of the hemicellulase is 1/50(g/ml), the temperature for treating the hemicellulase is 50 ℃, and the hemicellulase is treated at constant temperature for 3 hours.
(2) And (2) soaking the semi-finished biological filter material obtained in the step (1) in a nutrient solution for 30min, and inoculating microorganisms for 5d to obtain the biofilm-forming biomass filter material, wherein the concentration of the microorganism nutrient solution is 1%, and the molar ratio of C, N, P in the nutrient solution is 100:5: 1.
Example 2
A preparation method of a light biological filter material comprises the following components in parts by mass: 65 parts of steel slag, 12 parts of humic acid, 2 parts of ammonium carbonate, 0.6 part of adhesive and 10 parts of water, wherein the preparation method comprises the following steps:
(1) weighing the steel slag, the humic acid, the ammonium carbonate and the adhesive according to a proportion, adding water, uniformly mixing, preparing into balls in a ball forming machine, drying the balls with the diameter of 5mm in an oven at the drying temperature of 110 ℃ for 50min, calcining the balls in a muffle furnace for 2.5h at the calcining temperature of 450 ℃, and naturally cooling to room temperature after the calcining is finished to obtain a semi-finished biological filter material; the steel slag in the embodiment is obtained by screening, deironing and grinding, wherein the grinding operation is performed by a cone crusher and a Raymond mill in sequence, and the average particle size of the steel slag is 1 mm. In the embodiment, the adhesive is lignin urea-formaldehyde resin, and is prepared by continuously leaching industrial lignin, treating with hemicellulase and centrifuging, wherein the solvent for continuously leaching the industrial lignin is a mixture of toluene and ethanol, the volume ratio of the toluene to the ethanol is 8.5:1, the addition amount of the hemicellulase is 1/50(g/ml), the temperature for treating the hemicellulase is 50 ℃, and the hemicellulase is treated at constant temperature for 3 hours.
(2) And (2) soaking the semi-finished biological filter material obtained in the step (1) in a nutrient solution for 30min, and inoculating microorganisms for 5d to obtain the biofilm-forming biomass filter material, wherein the concentration of the microorganism nutrient solution is 1%, and the molar ratio of C, N, P in the nutrient solution is 100:6: 1.
Example 3
A preparation method of a light biological filter material comprises the following components in parts by mass: 70 parts of steel slag, 15 parts of humic acid, 5 parts of ammonium carbonate, 0.7 part of adhesive and 20 parts of water, wherein the preparation method comprises the following steps:
(1) weighing the steel slag, the humic acid, the ammonium carbonate and the adhesive according to a proportion, adding water, uniformly mixing, preparing into balls in a ball forming machine, drying the balls with the diameter of 6mm in an oven at the drying temperature of 110 ℃ for 50min, calcining the balls in a muffle furnace for 2.8h at the calcining temperature of 500 ℃, and naturally cooling to room temperature after the calcining is finished to obtain a semi-finished biological filter material; the steel slag in the embodiment is obtained by screening, deironing and grinding, wherein the grinding operation is performed by a cone crusher and a Raymond mill in sequence, and the average particle size of the steel slag is 1 mm. In the embodiment, the adhesive is lignin urea-formaldehyde resin, and is prepared by continuously leaching industrial lignin, treating with hemicellulase and then centrifuging, wherein the solvent for continuously leaching the industrial lignin is a mixture of toluene and ethanol, the volume ratio of the toluene to the ethanol is 8.5:1, the addition amount of the hemicellulase is 1/50(g/ml), the temperature for treating the hemicellulase is 50 ℃, and the temperature for treating the hemicellulase is constant for 3.5 hours.
(2) And (2) soaking the semi-finished biological filter material obtained in the step (1) in a nutrient solution for 35min, and inoculating microorganisms for 6d to obtain the biofilm-forming biomass filter material, wherein the concentration of the microorganism nutrient solution is 1%, and the molar ratio of C, N, P in the nutrient solution is 100:8: 1.
Example 4
A preparation method of a light biological filter material comprises the following components in parts by mass: 70 parts of steel slag, 16 parts of humic acid, 6 parts of ammonium carbonate, 0.7 part of adhesive and 20 parts of water, wherein the preparation method comprises the following steps:
(1) weighing the steel slag, the humic acid, the ammonium carbonate and the adhesive according to a proportion, adding water, uniformly mixing, preparing into balls in a ball forming machine, drying the balls with the diameter of 6mm in an oven at the drying temperature of 115 ℃ for 50min, calcining the balls in a muffle furnace for 2.8h at the calcining temperature of 500 ℃, and naturally cooling to room temperature after the calcining is finished to obtain a semi-finished biological filter material; the steel slag in the embodiment is obtained by screening, deironing and grinding, wherein the grinding operation is performed by a cone crusher and a Raymond mill in sequence, and the average particle size of the steel slag is 1.2 mm. In the embodiment, the adhesive is lignin urea-formaldehyde resin, and is prepared by continuously leaching industrial lignin, treating with hemicellulase and then centrifuging, wherein the solvent for continuously leaching the industrial lignin is a mixture of toluene and ethanol, the volume ratio of the toluene to the ethanol is 8.5:1, the addition amount of the hemicellulase is 1/50(g/ml), the temperature for treating the hemicellulase is 50 ℃, and the temperature for treating the hemicellulase is constant for 3.6 hours.
(2) And (2) soaking the semi-finished biological filter material obtained in the step (1) in a nutrient solution for 45min, and inoculating microorganisms for 7d to obtain the biofilm-forming biomass filter material, wherein the concentration of the microorganism nutrient solution is 1%, and the molar ratio of C, N, P in the nutrient solution is 100:8: 1.
Example 5
A preparation method of a light biological filter material comprises the following components in parts by mass: 80 parts of steel slag, 18 parts of humic acid, 8 parts of ammonium carbonate, 0.8 part of adhesive and 30 parts of water, wherein the preparation method comprises the following steps:
(1) weighing the steel slag, the humic acid, the ammonium carbonate and the adhesive according to a proportion, adding water, uniformly mixing, preparing into balls in a ball forming machine, drying the balls with the diameter of 8mm in an oven at the drying temperature of 120 ℃ for 60min, calcining the balls in a muffle furnace for 3h at the calcining temperature of 550 ℃, and naturally cooling to room temperature after the calcining is finished to obtain a semi-finished biological filter material; the steel slag in the embodiment is obtained by screening, deironing and grinding, wherein the grinding operation is performed by a cone crusher and a Raymond mill in sequence, and the average particle size of the steel slag is 1.2 mm. In the embodiment, the adhesive is lignin urea-formaldehyde resin, and is prepared by continuously leaching industrial lignin, treating with hemicellulase and centrifuging, wherein the solvent for continuously leaching the industrial lignin is a mixture of toluene and ethanol, the volume ratio of the toluene to the ethanol is 8.5:1, the addition amount of the hemicellulase is 1/50(g/ml), the temperature for treating the hemicellulase is 50 ℃, and the temperature is kept constant for 4 hours.
(2) And (2) soaking the semi-finished biological filter material obtained in the step (1) in a nutrient solution for 45min, and inoculating microorganisms for 7d to obtain the biofilm-forming biomass filter material, wherein the concentration of the microorganism nutrient solution is 1%, and the molar ratio of C, N, P in the nutrient solution is 100:10: 1.
The light biological filter materials in the embodiments 1-5 are placed in a biological filter, wastewater in the biological filter circularly flows, the wastewater comes from domestic sewage, the ratio of the using amount of the light biological filter materials to the volume of the biological filter is 1:1.8, water at the water outlet of the biological filter is taken for detecting the residual content of ammonia nitrogen and the content of nitrite in the outlet water, and the detection results are shown in table 1.
TABLE 1
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (8)
1. A preparation method of a light biological filter material is characterized by comprising the following steps: the biological filter material comprises the following components in parts by mass: 60-80 parts of steel slag, 12-18 parts of humic acid, 2-8 parts of ammonium carbonate, 0.6-0.8 part of adhesive and 10-30 parts of water, wherein the preparation method comprises the following steps:
(1) weighing the steel slag, the humic acid, the ammonium carbonate and the adhesive according to a proportion, adding water, uniformly mixing, preparing into balls in a ball forming machine, drying the balls with the diameter of 3-8mm in an oven at the drying temperature of 100-550 ℃ for 45-60min, calcining the balls in a muffle furnace at the calcining temperature of 450-550 ℃ for 2.5-3h, and naturally cooling to room temperature after the calcining to obtain a semi-finished biological filter material;
(2) and (2) soaking the semi-finished biological filter material obtained in the step (1) in a nutrient solution for 30-45min, and inoculating microorganisms for 5-7d to obtain the biofilm-forming biomass filter material.
2. The method for preparing the lightweight biological filter material according to claim 1, wherein the method comprises the following steps: the steel slag is obtained after screening, deironing and milling, and the milling operation is carried out by adopting a cone crusher and a Raymond mill in sequence.
3. The method for preparing the lightweight biological filter material according to claim 1, wherein the method comprises the following steps: the average grain size of the steel slag is 1-1.2 mm.
4. The method for preparing the lightweight biological filter material according to claim 1, wherein the method comprises the following steps: the concentration of the microbial nutrient solution is 1%, and the molar ratio of C, N, P in the nutrient solution is 100:5-10: 1.
5. The method for preparing the lightweight biological filter material according to claim 1, wherein the method comprises the following steps: the adhesive is prepared from lignin urea-formaldehyde resin through continuous leaching of industrial lignin, hemicellulase treatment and centrifugation.
6. The method for preparing a lightweight biological filter material as claimed in claim 5, wherein the method comprises the following steps: the solvent for continuous leaching of the industrial lignin is a mixture of toluene and ethanol, and the volume ratio of the toluene to the ethanol is 8.5: 1.
7. The method for preparing a lightweight biological filter material as claimed in claim 5, wherein the method comprises the following steps: the amount of the above hemicellulase added was 1/50 (g/ml).
8. The method for preparing a lightweight biological filter material as claimed in claim 5, wherein the method comprises the following steps: the temperature of the hemicellulase treatment is 50 ℃, and the hemicellulase is treated for 3-4 hours at constant temperature.
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Cited By (2)
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CN113636772A (en) * | 2021-08-12 | 2021-11-12 | 福建源鑫环保科技有限公司 | Steel slag-based heat-insulating filler and preparation method and application thereof |
CN115322008A (en) * | 2022-03-30 | 2022-11-11 | 大连海洋大学 | Porous biological filler for purifying polluted seawater and preparation method and application thereof |
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