CN113480326A - Method for preparing environment functional material by multi-source solid waste synergy - Google Patents
Method for preparing environment functional material by multi-source solid waste synergy Download PDFInfo
- Publication number
- CN113480326A CN113480326A CN202110783506.4A CN202110783506A CN113480326A CN 113480326 A CN113480326 A CN 113480326A CN 202110783506 A CN202110783506 A CN 202110783506A CN 113480326 A CN113480326 A CN 113480326A
- Authority
- CN
- China
- Prior art keywords
- solid waste
- source solid
- functional material
- preparing
- synergy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000463 material Substances 0.000 title claims abstract description 47
- 239000002910 solid waste Substances 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000001816 cooling Methods 0.000 claims abstract description 20
- 239000010902 straw Substances 0.000 claims abstract description 17
- 239000010802 sludge Substances 0.000 claims abstract description 16
- 238000002156 mixing Methods 0.000 claims abstract description 14
- 239000010815 organic waste Substances 0.000 claims abstract description 13
- 239000002245 particle Substances 0.000 claims abstract description 9
- 238000005245 sintering Methods 0.000 claims abstract description 8
- 239000002002 slurry Substances 0.000 claims abstract description 8
- 240000008042 Zea mays Species 0.000 claims abstract description 7
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims abstract description 7
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims abstract description 7
- 235000005822 corn Nutrition 0.000 claims abstract description 7
- 239000010881 fly ash Substances 0.000 claims abstract description 6
- 239000004576 sand Substances 0.000 claims abstract description 6
- 239000002689 soil Substances 0.000 claims abstract description 6
- 235000017060 Arachis glabrata Nutrition 0.000 claims abstract description 5
- 244000105624 Arachis hypogaea Species 0.000 claims abstract description 5
- 235000010777 Arachis hypogaea Nutrition 0.000 claims abstract description 5
- 235000018262 Arachis monticola Nutrition 0.000 claims abstract description 5
- 240000007594 Oryza sativa Species 0.000 claims abstract description 5
- 235000007164 Oryza sativa Nutrition 0.000 claims abstract description 5
- 235000014676 Phragmites communis Nutrition 0.000 claims abstract description 5
- 235000020232 peanut Nutrition 0.000 claims abstract description 5
- 235000009566 rice Nutrition 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims abstract description 4
- 238000005520 cutting process Methods 0.000 claims abstract description 3
- 238000001125 extrusion Methods 0.000 claims abstract description 3
- 238000005469 granulation Methods 0.000 claims abstract description 3
- 230000003179 granulation Effects 0.000 claims abstract description 3
- 238000004537 pulping Methods 0.000 claims abstract description 3
- 238000010304 firing Methods 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 239000004088 foaming agent Substances 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 5
- 230000009467 reduction Effects 0.000 claims description 5
- 238000012216 screening Methods 0.000 claims description 5
- 238000010583 slow cooling Methods 0.000 claims description 5
- 238000003860 storage Methods 0.000 claims description 5
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 4
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- 235000015424 sodium Nutrition 0.000 claims description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 2
- 229920002472 Starch Polymers 0.000 claims description 2
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 229910052593 corundum Inorganic materials 0.000 claims description 2
- 239000004571 lime Substances 0.000 claims description 2
- 235000019698 starch Nutrition 0.000 claims description 2
- 239000008107 starch Substances 0.000 claims description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 2
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 239000011148 porous material Substances 0.000 abstract description 4
- 238000000197 pyrolysis Methods 0.000 abstract description 4
- 230000004913 activation Effects 0.000 abstract description 3
- 239000010813 municipal solid waste Substances 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 5
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 2
- YAIQCYZCSGLAAN-UHFFFAOYSA-N [Si+4].[O-2].[Al+3] Chemical compound [Si+4].[O-2].[Al+3] YAIQCYZCSGLAAN-UHFFFAOYSA-N 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 235000010755 mineral Nutrition 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000011664 nicotinic acid Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000011232 storage material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002354 daily effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Images
Classifications
-
- 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
- C04B38/06—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by burning-out added substances by burning natural expanding materials or by sublimating or melting out added substances
- C04B38/063—Preparing or treating the raw materials individually or as batches
- C04B38/0635—Compounding ingredients
- C04B38/0645—Burnable, meltable, sublimable materials
- C04B38/0675—Vegetable refuse; Cellulosic materials, e.g. wood chips, cork, peat, paper
-
- 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
-
- 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
- C04B33/1321—Waste slurries, e.g. harbour sludge, industrial muds
-
- 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
- C04B33/135—Combustion residues, e.g. fly ash, incineration waste
- C04B33/1352—Fuel ashes, e.g. fly ash
-
- 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
- C04B2235/6562—Heating rate
-
- 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
- C04B2235/6565—Cooling rate
-
- 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
- C04B2235/6567—Treatment time
-
- 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
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/74—Physical characteristics
- C04B2235/77—Density
-
- 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
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Dispersion Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Treatment Of Sludge (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to the technical field of urban solid waste resource disposal, in particular to a method for preparing an environmental functional material by multi-source solid waste cooperation, which comprises the following steps: mixing multi-source solid waste and functional auxiliary materials, adding water for pulping, and crushing and cutting to form slurry with uniform particle size; carrying out secondary mixing on the obtained slurry and agricultural and forestry organic waste, and then carrying out extrusion granulation; drying the oversize product, reducing the water content to the required value, and then sintering; after the material is fired, cooling to obtain the environment functional material; wherein the multi-source solid waste comprises river and lake bottom mud, municipal sludge, tailing sand, building residue soil and fly ash; the agricultural and forestry organic waste is at least one of corn straw, rice straw, reed straw and peanut shell. The invention establishes an inorganic-organic hybrid environment functional material system with spherical and connected pore structures through mechanical force activation, endogenous self-sustaining sintering and anoxic pyrolysis.
Description
Technical Field
The invention relates to the technical field of urban solid waste resource disposal, in particular to a method for preparing an environment functional material by multi-source solid waste synergy.
Background
Along with the rapid development of economy and the acceleration of urbanization process in China, the pollution of urban organic solid wastes is becoming serious day by day, and river and lake sediment, municipal sludge, agricultural and forestry organic wastes and the like as typical urban organic solid wastes have huge yield and high harmfulness, and the life health and safety of urban residents are seriously influenced. At present, river and lake bottom mud is mainly discarded or used as backfill after conventional concentration and dehydration, and the traditional bottom mud disposal mode can not meet the requirements of sustainable development of ecological environment in future in terms of environmental pollution, sanitation, safety, economy, effectiveness and the like; municipal sludge is currently mainly treated by landfill after mechanical dehydration, and more municipal sludge can go everywhere along with the gradual reduction of landfill capacity and the improvement of landfill standards.
If the treatment of the urban organic solid waste is combined with the resource utilization of the product, the thoroughness and economy of the treatment are greatly improved, and the method has important practical value for overall improvement of urban ecological environment.
Disclosure of Invention
The invention aims to provide a method for preparing an environment functional material by multi-source solid waste synergy, which combines the 'silicon-aluminum-based mineral bionic pore-forming' and 'biomass auxiliary material endogenous self-sustaining medium-high temperature sintering' technologies through mechanical force activation, endogenous self-sustaining sintering and anoxic pyrolysis to establish an inorganic-organic hybrid environment functional material system with a spherical and connected pore structure.
The scheme adopted by the invention for realizing the purpose is as follows: a method for preparing an environment functional material by multi-source solid waste cooperation comprises the following steps:
(1) mixing multi-source solid waste and functional auxiliary materials, adding water for pulping, and crushing and cutting to form slurry with uniform particle size;
(2) carrying out secondary mixing on the slurry obtained in the step (1) and agricultural and forestry organic waste, and then carrying out extrusion granulation;
(3) screening the screened material obtained in the step (2), drying the screened material, and then sintering after the moisture content is reduced to the required value;
(4) after the material is fired, cooling to obtain the environment functional material;
wherein in the step (1), the multi-source solid waste comprises river and lake bottom mud, municipal sludge, tailing sand, building residue soil and fly ash; in the step (2), the agriculture and forestry organic waste is at least one of corn straw, rice straw, reed straw and peanut shell.
Preferably, in the step (1), in the multi-source solid waste, the mass percentage of the river and lake bottom mud and the municipal sludge in the total raw materials is 80-85%, the mass ratio of the river and lake bottom mud to the municipal sludge is 3:2-3, and SiO in the tailing sand is240-80% of Al2O3The content of (A) is 10% -25%.
Preferably, in the step (1), the water content of the slurry is 60-70%.
Preferably, in the step (1), the functional auxiliary materials comprise a fluxing agent, a foaming agent and an adhesive, wherein the addition amount of the fluxing agent is 0.5-2.0% of the total amount of the multi-source solid waste, the addition amount of the foaming agent is 0-1.5% of the total amount of the multi-source solid waste, and the addition amount of the adhesive is 0-0.35% of the total amount of the multi-source solid waste.
Preferably, the fluxing agent is at least one of NaO, KO and CaO, the foaming agent is at least one of carbonate and iron oxide, and the adhesive is at least one of starch, lime and sodium humate.
Preferably, in the step (2), the agricultural and forestry organic waste is at least one of corn straw, rice straw, reed straw and peanut shell, the addition amount of the agricultural and forestry organic waste is 10% -15% of the total amount of multi-source solid waste, and the water content of the product after secondary mixing is below 50%.
Preferably, in the step (3), the screening pore diameter is 2-3cm, and the water content of the dried product is below 20%.
Preferably, in the step (3), the firing process sequentially comprises anoxic firing and oxygen-rich firing, the temperature is raised to 300-.
Preferably, in the step (4), the cooling process sequentially comprises rapid cooling, slow cooling and final cooling, wherein the cooling rate of a rapid cooling section is 80-100 ℃/min, and the cooling is carried out to 700 ℃; the temperature reduction rate of the slow cooling section is 10-30 ℃/min, and the temperature is cooled to 500 ℃; after the temperature is lower than 500 ℃, the material can be rapidly cooled to be a final cooling section.
Preferably, in the step (4), the porosity of the environment functional material is 45% -55%, the mass water storage rate is more than or equal to 85%, and the compressive strength is 1.0-3.0 MPa.
The invention has the following advantages and beneficial effects:
the method is based on the idea of comprehensive utilization and waste recycling, and aims at the characteristics of high water content and low organic matter of river and lake bottom mud (lake sludge), the river and lake bottom mud is used as a main raw material (a silicon-aluminum oxide framework is constructed), organic solid wastes such as agriculture and forestry organic wastes and municipal sludge (air holes are generated by combustion and heat is provided), and low-grade industrial solid wastes such as building slag soil and coal ash (silicon-aluminum proportion is adjusted), and based on the theory of in-phase and in-phase structures, the 'silicon-aluminum-based mineral bionic pore-forming' and 'biomass auxiliary material endogenous self-sustained medium-high temperature sintering' technologies are combined through mechanical force activation, endogenous self-sustained sintering and anoxic pyrolysis, so that an inorganic-organic hybrid environmental functional material system with a spherical and connected pore structure is established.
The method has the advantages of high reduction: after the urban organic solid waste is treated, the volume is reduced to be less than 10% of the original volume; the harmless treatment is thorough: toxic and harmful substances in the urban organic solid waste are thoroughly eliminated in the ultrahigh-temperature combustion process, and heavy metals are solidified in the environment functional material (the heavy metals are solidified in a silicon-aluminum oxide framework); the method is wide in applicable raw materials, comprises municipal sludge, river and lake bottom mud, tailing sand, building residue soil, fly ash, agricultural and forestry organic waste and the like, and can be used for treating various waste. The product porosity is 45-55%, the mass water storage rate is more than or equal to 85%, the water storage rate of the existing water storage material in a supermarket far away is 30%, the compressive strength is 1.0-3.0Mpa, and the super-clean water storage material is widely used in the fields of sponge city construction, water ecological restoration, landscaping and the like and has high market value.
Drawings
FIG. 1 is a schematic diagram of a fired product of example 1;
FIG. 2 is a schematic structural view of the experimental apparatus of example 2.
Detailed Description
The following examples are provided to further illustrate the present invention for better understanding, but the present invention is not limited to the following examples.
Example 1
A method for preparing an environment functional material by multi-source solid waste synergy comprises the following raw materials in percentage by mass: 80 percent of river and lake bottom mud and municipal sludge (the mixing ratio of the river mud to the municipal sludge is 3:2 in terms of solid content), 2 percent of building residue and fly ash, 15 percent of corn straw (loss on ignition is more than 50 percent), 1.5 percent of KO and 1 percent of NaCO3And 0.5% sodium humate. Firstly, the river and lake bottom mud, the municipal sludge, the building residue soil and the fly ash are mixed with KO and NaCO3Mixing with sodium humate, adding a certain amount of water, stirring to obtain a mixture with the water content of 60-70%, fully mixing the mixture with corn straws in a secondary mixing machine, wherein the water content of a system after secondary mixing is below 40-50%, placing a product of the secondary mixing in a double-roll type granulator, forming into round or oval particles with the particle size of 3-4 cm, screening the round particles through a drum screen, drying the particles meeting the particle size requirement at 150 ℃ until the water content is less than 20%, placing the dried particles in a firing furnace, firstly heating to 350 ℃, preserving heat for 30min, and preheating; then heating to 630 ℃ for pyrolysis or gasification, and keeping the temperature for 10 min; most preferablyThen heating to 830 ℃ in an oxygen-rich environment, and keeping the temperature for 5 min; the fired product is sequentially quenched, slowly cooled and finally cooled, wherein the cooling rate of a quenching section is 80 ℃/min, and the product is cooled to 700 ℃; the temperature reduction rate of the slow cooling section is 20 ℃/min, and the temperature is cooled to 500 ℃; cooling to room temperature quickly after the temperature is lower than 500 ℃. After cooling, the environment functional material is obtained. As shown in fig. 1, a schematic view of the fired product of this example is shown.
Tests prove that the consumption of the environmental functional material solid waste prepared by the embodiment is 95%, and the density of the prepared product is 450kg/m3The water storage rate is 90 percent, and the cylinder pressure strength is 1.0 Mpa.
Example 2
The multifunctional environmental functional material prepared in example 1 was used as a water purification material to remove COD (chemical oxygen demand), TN (total nitrogen), TP (total phosphorus), and SS (suspended solids) from the water.
The implementation steps are as follows: the treatment device adopts organic glass, so that the state of the sewage in the test process can be conveniently observed, the system adopts intermittent water inlet, and the hydraulic load is 0.5m3·(m2·d)-1. The water is regularly fed once every day, the Hydraulic Retention Time (HRT) is set to be 24h, the daily water inflow is 16L, and water inlets are arranged at intervals of 20cm, so that the zonal sampling of the deep filling effect can be realized. As shown in fig. 2, which is a schematic structural diagram of the testing apparatus of this embodiment, the test results are as follows: unit: mg/L
The test results show that the prepared environment functional material has obvious adsorption and purification effects on COD, SS, TP and TN in sewage, and can be used for upgrading and modifying the effluent of a sewage treatment plant, filtering surface runoff and the like.
While the foregoing is directed to the preferred embodiment of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.
Claims (10)
1. A method for preparing an environment functional material by multi-source solid waste cooperation is characterized by comprising the following steps:
(1) mixing multi-source solid waste and functional auxiliary materials, adding water for pulping, and crushing and cutting to form slurry with uniform particle size;
(2) carrying out secondary mixing on the slurry obtained in the step (1) and agricultural and forestry organic waste, and then carrying out extrusion granulation;
(3) screening the screened material obtained in the step (2), drying the screened material, and then sintering after the moisture content is reduced to the required value;
(4) after the material is fired, cooling to obtain the environment functional material;
wherein in the step (1), the multi-source solid waste comprises river and lake bottom mud, municipal sludge, tailing sand, building residue soil and fly ash; in the step (2), the agriculture and forestry organic waste is at least one of corn straw, rice straw, reed straw and peanut shell.
2. The method for preparing the environment functional material by the multi-source solid waste synergy of claim 1, is characterized in that: in the step (1), in the multi-source solid waste, the mass percentage of the river and lake bottom mud and the municipal sludge in the total raw materials is 80-85%, the mass ratio of the river and lake bottom mud to the municipal sludge is 3:2-3, and SiO in the tailing sand is240-80% of Al2O3The content of (A) is 10% -25%.
3. The method for preparing the environment functional material by the multi-source solid waste synergy of claim 1, is characterized in that: in the step (1), the water content of the slurry is 60-70%.
4. The method for preparing the environment functional material by the multi-source solid waste synergy of claim 1, is characterized in that: in the step (1), the functional auxiliary materials comprise a fluxing agent, a foaming agent and an adhesive, wherein the addition amount of the fluxing agent is 0.5-2.0% of the total amount of the multi-source solid waste, the addition amount of the foaming agent is 0-1.5% of the total amount of the multi-source solid waste, and the addition amount of the adhesive is 0-0.35% of the total amount of the multi-source solid waste.
5. The method for preparing the environment functional material by the multi-source solid waste synergy of claim 4, wherein: the fluxing agent is at least one of NaO, KO and CaO, the foaming agent is at least one of carbonate and iron oxide, and the adhesive is at least one of starch, lime and sodium humate.
6. The method for preparing the environment functional material by the multi-source solid waste synergy of claim 1, is characterized in that: in the step (2), the agriculture and forestry organic waste is at least one of corn straw, rice straw, reed straw and peanut shell, the addition amount of the agriculture and forestry organic waste is 10% -15% of the total amount of multi-source solid waste, and the water content of a product after secondary mixing is below 50%.
7. The method for preparing the environment functional material by the multi-source solid waste synergy of claim 1, is characterized in that: in the step (3), the screening aperture is 2-3cm, and the water content of the dried product is below 20%.
8. The method for preparing the environment functional material by the multi-source solid waste synergy of claim 1, is characterized in that: in the step (3), the firing process sequentially comprises anoxic firing and oxygen-rich firing, the temperature is raised to 300-.
9. The method for preparing the environment functional material by the multi-source solid waste synergy of claim 1, is characterized in that: in the step (4), the cooling process sequentially comprises rapid cooling, slow cooling and final cooling, wherein the cooling rate of a rapid cooling section is 80-100 ℃/min, and the cooling is carried out to 700 ℃; the temperature reduction rate of the slow cooling section is 10-30 ℃/min, and the temperature is cooled to 500 ℃; after the temperature is lower than 500 ℃, the material can be rapidly cooled to be a final cooling section.
10. The method for preparing the environment functional material by the multi-source solid waste synergy of claim 1, is characterized in that: in the step (4), the porosity of the environment functional material is 45-55%, the mass water storage rate is more than or equal to 85%, and the compressive strength is 1.0-3.0 Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110783506.4A CN113480326A (en) | 2021-07-12 | 2021-07-12 | Method for preparing environment functional material by multi-source solid waste synergy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110783506.4A CN113480326A (en) | 2021-07-12 | 2021-07-12 | Method for preparing environment functional material by multi-source solid waste synergy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113480326A true CN113480326A (en) | 2021-10-08 |
Family
ID=77938161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110783506.4A Pending CN113480326A (en) | 2021-07-12 | 2021-07-12 | Method for preparing environment functional material by multi-source solid waste synergy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113480326A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114014689A (en) * | 2021-10-29 | 2022-02-08 | 武汉理工大学 | A kind of low-temperature pore-forming water storage type ceramsite prepared by using solid waste and preparation method thereof |
| CN114634218A (en) * | 2022-04-18 | 2022-06-17 | 中国电建集团中南勘测设计研究院有限公司 | Resource utilization method and application of river and lake bottom mud |
| CN114804735A (en) * | 2022-04-27 | 2022-07-29 | 扬州市建筑设计研究院有限公司 | Process for producing biological carbon soil cured brick by using waste |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107555951A (en) * | 2017-08-25 | 2018-01-09 | 昆明理工大学 | A kind of water conservation porous brick for sponge city and preparation method thereof |
| CN107602077A (en) * | 2017-08-21 | 2018-01-19 | 武汉铭创新海生态科技有限公司 | A kind of high-performance water-storage material and preparation method thereof |
| CN108484115A (en) * | 2018-03-30 | 2018-09-04 | 武汉理工大学 | A kind of porous material prepared using solid waste |
| CN111302825A (en) * | 2020-02-17 | 2020-06-19 | 西安建筑科技大学 | Inorganic multi-layer functional water storage ceramsite and preparation method thereof |
-
2021
- 2021-07-12 CN CN202110783506.4A patent/CN113480326A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107602077A (en) * | 2017-08-21 | 2018-01-19 | 武汉铭创新海生态科技有限公司 | A kind of high-performance water-storage material and preparation method thereof |
| CN107555951A (en) * | 2017-08-25 | 2018-01-09 | 昆明理工大学 | A kind of water conservation porous brick for sponge city and preparation method thereof |
| CN108484115A (en) * | 2018-03-30 | 2018-09-04 | 武汉理工大学 | A kind of porous material prepared using solid waste |
| CN111302825A (en) * | 2020-02-17 | 2020-06-19 | 西安建筑科技大学 | Inorganic multi-layer functional water storage ceramsite and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114014689A (en) * | 2021-10-29 | 2022-02-08 | 武汉理工大学 | A kind of low-temperature pore-forming water storage type ceramsite prepared by using solid waste and preparation method thereof |
| CN114014689B (en) * | 2021-10-29 | 2023-02-07 | 武汉理工大学 | Low-temperature pore-forming water-storage ceramsite prepared from solid waste and preparation method of ceramsite |
| CN114634218A (en) * | 2022-04-18 | 2022-06-17 | 中国电建集团中南勘测设计研究院有限公司 | Resource utilization method and application of river and lake bottom mud |
| CN114804735A (en) * | 2022-04-27 | 2022-07-29 | 扬州市建筑设计研究院有限公司 | Process for producing biological carbon soil cured brick by using waste |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10894741B2 (en) | Method for preparing ceramsite by using municipal sludge as raw material | |
| Zhao et al. | Co-utilization of lake sediment and blue-green algae for porous lightweight aggregate (ceramsite) production | |
| CN101585714B (en) | Preparing method of ceram site fully using biosolid and sludge | |
| CN113480326A (en) | Method for preparing environment functional material by multi-source solid waste synergy | |
| CN101962590B (en) | Regenerative coal produced by multiple kinds of oily sludge in oil refinery and preparation method thereof | |
| CN108423959A (en) | A kind of Sludge resource utilization method based on pyrohydrolysis-pyrolysis charring | |
| CN105906176B (en) | A method of recycling, which is total to, using greasy filth and solid waste prepares light ceramic | |
| CN102070352A (en) | Method for recycling dewatered sludge, channel sediment and fly ash | |
| CN106747596A (en) | A kind of method that utilization mineralized waste, sludge and building castoff prepare haydite | |
| CN102515605A (en) | Light-weight ceramsites of riverway sludge and production method for same | |
| CN103880472A (en) | Sludge porous material and preparation method thereof | |
| CN105542808A (en) | All-closed zero-emission household refuse energy regeneration and comprehensive utilization production process | |
| CN102249730A (en) | Method for preparing ceramsite by using chemical sludge incineration ash | |
| CN103553702A (en) | Resource utilization method of residual sludge from petrochemical organic wastewater biological treatment | |
| CN108675815A (en) | A kind of preparation method of flyash sludge ceramsite | |
| CN101598339A (en) | A method for resource utilization of crop straw and sewage sludge conditioning and co-incineration disposal | |
| CN111574193A (en) | Sludge ash ceramsite filter material and preparation method thereof | |
| CN110723961A (en) | Environment-friendly microporous brick prepared by comprehensively utilizing solid wastes and preparation method thereof | |
| CN102765929A (en) | Method for preparing ultralight haydite utilizing Yellow River sediment and sludge | |
| CN113651588A (en) | Efficient phosphorus-removing baking-free ceramsite and preparation method and application thereof | |
| CN116253555B (en) | Industrial sludge-based full-solid waste water permeable brick and preparation method thereof | |
| CN117776765A (en) | Method for cooperatively firing ceramsite by using river and lake sediment and municipal sludge | |
| CN116606680A (en) | Preparation method of sludge-straw biomass solid fuel | |
| CN101973753B (en) | Process for making bricks by using excess sludge in chemical industry | |
| CN111393140A (en) | Method for preparing novel ceramsite by using iron tailings and biogas residues |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211008 |