CN112374844A - Process for preparing biological bricks by recycling municipal domestic sludge incineration ash - Google Patents
Process for preparing biological bricks by recycling municipal domestic sludge incineration ash Download PDFInfo
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- CN112374844A CN112374844A CN202011164611.1A CN202011164611A CN112374844A CN 112374844 A CN112374844 A CN 112374844A CN 202011164611 A CN202011164611 A CN 202011164611A CN 112374844 A CN112374844 A CN 112374844A
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- Prior art keywords
- incineration ash
- sludge incineration
- municipal domestic
- domestic sludge
- biological brick
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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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/10—Lime cements or magnesium oxide cements
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00017—Aspects relating to the protection of the environment
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention relates to the technical field of sludge treatment, in particular to a process for preparing a biological brick by recycling municipal domestic sludge incineration ash, which is used for preparing the sludge incineration ash into an ecological, environment-friendly, economic and efficient novel building material; the invention combines the reduction treatment and resource utilization of the solid waste, realizes the reduction, harmless and resource treatment of the sludge incineration ash, obtains a novel building material with application value, is expected to be applied to the fields of buildings, capital constructions and the like, and has better environmental protection benefit and economic benefit.
Description
Technical Field
The invention relates to the technical field of sludge treatment, in particular to a process for preparing a biological brick by recycling municipal domestic sludge incineration ash.
Background
The sludge after the urban domestic sewage treatment generally has the water content of about 80 percent, is rich in nutrient components such as organic matters and the like, also contains a certain amount of heavy metals and harmful substances such as viruses, pathogens, parasitic ova and the like, and can cause serious secondary environmental pollution due to improper treatment of the sludge. The existing disposal mode of municipal domestic sludge is mainly incineration, and ash slag generated by sludge incineration is also dangerous solid waste and needs to be sent to a dangerous waste landfill for safe landfill. However, due to high landfill cost, enterprises cannot bear high landfill treatment cost, and many sludge incineration ash residues are not reasonably finally treated or reasonably comprehensively utilized, so that resource waste is caused, and the sludge incineration ash residues also become an important environmental risk source.
The sludge incineration ash is subjected to harmless treatment and recycling, the problems of high safe landfill cost, insufficient landfill disposal capacity and the like of the traditional sludge incineration ash can be solved, and the full utilization of substances can be realized, so that the establishment and sustainable development of circular economy are promoted. Because the sludge incineration associated sludge incineration ash presents good molding characteristics and has potential volcanic ash activity, the cement admixture used as a building material is a good choice for realizing resource utilization. At present, sludge incineration ash is applied to be made into concrete materials, but the concrete materials can continuously discharge greenhouse gas CO into the atmosphere in the preparation and use processes2Acid rain-initiating gas SO3And NO, which is a highly toxic gas, can cause pollution to the atmosphere, soil and water resources to a certain extent. Therefore, in order to ensure the sustainable development of society, the significance of making the sludge incineration ash into a novel ecological, environment-friendly, economic and efficient building material is great.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a process for preparing a biological brick by recycling municipal domestic sludge incineration ash, which solves the problems of harmlessness and recycling treatment of the municipal domestic sludge incineration ash, and the prepared biological brick has high compressive strength and is expected to be applied to the fields of buildings, capital constructions and the like as a novel building material.
In order to achieve the purpose, the invention adopts the technical scheme that:
a process for preparing a biological brick by recycling municipal domestic sludge incineration ash specifically comprises the following steps:
s1, culturing compound bacteria through the culture solution to obtain a bacterial solution, wherein the compound bacteria comprise Bacillus pasteurii (Bacillus pasteururii) and Bacillus pasteurii (Sporosarcina pasteurii);
s2, uniformly mixing the bacterial liquid obtained in the step S1 with a saline solution to obtain a solidified liquid;
s3, mixing the municipal domestic sludge incineration ash with the solidification liquid obtained in the step S2 uniformly, adding quicklime, and mixing uniformly to obtain mixed slurry;
and S4, pouring the mixed slurry obtained in the step S3 into a brick making mold, pressing and molding, then placing the mixture under a certain temperature, humidity and compression molding pressure for curing for a period of time, and demolding and drying after curing to obtain the biological brick.
The sludge incineration ash comprises slag and furnace ash, the slag is yellow brown granular small particles and mainly comes from auxiliary fuel coal for sludge incineration, the furnace ash is black brown powder and mainly comes from residues of sludge incineration and coal ash, the sludge incineration ash has better mechanical property, the invention can be used as aggregate of building materials, utilizes the microorganism to induce the calcium carbonate deposition technology, leads the calcium carbonate structure with cementing property formed by sludge incineration ash to become harmless biological bricks through biomineralization, and pollutants such as heavy metals in the sludge can be stably sealed, the leaching of the heavy metals is prevented, the reduction, harmless and recycling treatment of sludge incineration ash is realized, a novel building material with application value is obtained, and the sludge incineration ash is expected to be applied to the fields of buildings, capital construction (preparation of footpath bricks, river protection bricks, anti-skid bricks and the like) and the like.
Preferably, the concentration of the Pasteurella pasteuriana and the concentration of the Pasteurella octacosa in the step S1 are both (3-5) multiplied by 106cfu/mL。
Preferably, the culture solution in the step S1 comprises 15-25g/L of glucose, 3-5g/L of yeast extract, 15-25g/L of urea, 20-25mg/L of nickel chloride hexahydrate and 10-15mg/L of manganese chloride tetrahydrate.
Preferably, the volume ratio of the two bacterial liquids in step S2 is 1: 1.
Preferably, the saline solution of step S2 includes 2-3mol/L calcium lactate and 2-3mol/L magnesium chloride.
Preferably, the volume ratio of the bacteria liquid to the saline solution in the step S2 is 1: 1.
Preferably, the material-liquid ratio of the municipal domestic sludge incineration ash to the solidification liquid in the step S3 is 1: 3-6.
Preferably, the weight ratio of the municipal domestic sludge incineration ash to the quicklime in the step S4 is 2-5: 1.
Preferably, the curing temperature is 30-40 ℃, the humidity is 30-40%, the compression molding pressure is 2.5-3.0Mpa, and the time is 7-12 d.
Preferably, the municipal domestic sludge incineration ash obtained in the step S3 is treated by a 22-30 mesh sieve before being uniformly mixed with the curing liquid.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a process for preparing a biological brick by recycling municipal domestic sludge incineration ash, which is characterized in that the municipal domestic sludge incineration ash is solidified into a harmless biological brick by utilizing a microorganism-induced calcium carbonate deposition technology, and harmful heavy metal ion components in the waste incineration ash can be stably fixed, so that the harmlessness of the waste incineration ash is realized; therefore, the method combines the reduction treatment and resource utilization of the solid waste, realizes the reduction, harmless treatment and resource utilization of the sludge incineration ash, obtains a novel building material with application value, is expected to be applied to the fields of buildings, capital constructions and the like, and has better environmental protection benefit and economic benefit.
Detailed Description
The following further describes the embodiments of the present invention. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1 Process for preparing biological bricks by recycling municipal domestic sludge incineration ash
(1) Collecting municipal domestic sludge incineration ash: naturally drying sludge collected from sewage plant in Guangzhou Dashadi (Cambodia Guangzhou), breaking when sample reaches constant weight (mass change of sludge is not more than 0.1%), grinding and sieving to 80 mesh, and burning in furnace (incinerator) with feeding frequency of 4.6Hz and air supply rate of 3500m3Collecting sludge incineration ash for later use after incineration is finished;
(2) respectively culturing Bacillus pasteurianus (BNCC 337394) and Bacillus pasteurianus (ATCC11859) with culture solution (glucose 20g/L, yeast extract 4g/L, urea 20g/L, nickel chloride hexahydrate 22.5mg/L, manganese chloride tetrahydrate 12.5mg/L, solvent water) to concentration of 4 × 106cfu/mL bacterial liquid;
(3) mixing the two bacterial liquids (volume ratio is 1:1) and saline solution (2.5mol/L calcium lactate and 2.5mol/L magnesium chloride) in a ratio of 1:1 to obtain a curing solution;
(4) screening municipal domestic sludge incineration ash through a 22-mesh screen, uniformly mixing the municipal domestic sludge incineration ash with the curing liquid according to a material-liquid ratio (kg/L) of 1:4.5, adding quicklime according to a weight ratio (unit is kg) of 2.5:1, and uniformly mixing to obtain mixed slurry;
(5) pouring the mixed slurry into a square groove (240mm multiplied by 115mm multiplied by 53mm) of a brick making mold, pressing and molding, then curing and reacting for 10 days under the conditions that the temperature is 35 ℃, the humidity is 35% and the compression molding pressure is 2.75Mpa, demolding after curing, and drying for 55 hours at 55 ℃ to obtain the biological brick.
According to GB/T4111-2013, namely the concrete block and brick test method, the biological brick prepared by the method in the embodiment is subjected to a strength test, and the compressive strength of the biological brick is detected to be (6.33 +/-0.75) MPa.
Embodiment 2 process for preparing biological bricks by recycling municipal domestic sludge incineration ash
(1) Collecting municipal domestic sludge incineration ash: collecting bamboo material from GuangzhouNaturally drying sludge of sewage plant (Guangzhou white cloud region) for a period of time, when the sample reaches constant weight (the mass change of sludge is not more than 0.1%), breaking, grinding and screening to 80 meshes, then burning in a furnace (incinerator), wherein the feeding frequency is 3.3Hz, and the air supply amount is 5000m3Collecting sludge incineration ash for later use after incineration is finished;
(2) respectively culturing Bacillus pasteurianus (BNCC 337394) and Bacillus pasteurianus (ATCC11859) with culture solution (glucose 15g/L, yeast extract 3g/L, urea 15g/L, nickel chloride hexahydrate 20mg/L, manganese chloride tetrahydrate 10mg/L, and water as solvent) to concentration of 3 × 106cfu/mL bacterial liquid;
(3) mixing the two bacterial liquids (volume ratio is 1:1) and saline solution (2mol/L calcium lactate and 2mol/L magnesium chloride) in a ratio of 1:1 to obtain a curing solution;
(4) after screening the municipal domestic sludge incineration ash through a 25-mesh sieve, uniformly mixing the municipal domestic sludge incineration ash with the solidification liquid according to a material-liquid ratio (kg/L) of 1:3, adding quicklime according to a weight ratio (kg in units) of 2:1, and uniformly mixing to obtain mixed slurry;
(5) pouring the mixed slurry into a square groove (240mm multiplied by 115mm multiplied by 53mm) of a brick making mold, pressing and molding, then curing and reacting for 12d under the conditions that the temperature is 30 ℃, the humidity is 30% and the compression molding pressure is 2.5Mpa, demolding after curing, and drying for 60h at 50 ℃ to obtain the biological brick.
According to GB/T4111-2013, namely the concrete block and brick test method, the biological brick prepared by the method in the embodiment is subjected to a strength test, and the compressive strength of the biological brick is detected to be (6.12 +/-0.86) MPa.
Embodiment 3 process for preparing biological bricks by recycling municipal domestic sludge incineration ash
(1) Collecting municipal domestic sludge incineration ash: naturally drying sludge collected from Guangzhou Datansha (Guangzhou litchi bay area) sewage plant for a period of time, when the sample reaches constant weight (the mass change of the sludge is not more than 0.1%), knocking, grinding and screening to 80 meshes, and then burning in a furnace (incinerator), wherein the feeding frequency is 4.1Hz, and the air supplement amount is 4000m3Collecting sludge incineration ash for later use after incineration is finished;
(2) respectively culturing Bacillus pasteurianus (BNCC 337394) and Bacillus pasteurianus (ATCC11859) with culture solution (glucose 25g/L, yeast extract 5g/L, urea 25g/L, nickel chloride hexahydrate 25mg/L, manganese chloride tetrahydrate 15mg/L, solvent water) to concentration of 5 × 106cfu/mL bacterial liquid;
(3) mixing the two bacterial liquids (volume ratio is 1:1) and saline solution (3mol/L calcium lactate and 3mol/L magnesium chloride) in a ratio of 1:1 to obtain a curing solution;
(4) screening municipal domestic sludge incineration ash through a 30-mesh screen, mixing the municipal domestic sludge incineration ash with the curing liquid according to a material-liquid ratio (kg/L) of 1:6, adding quicklime according to a weight ratio (kg in units) of 5:1, and mixing uniformly to obtain mixed slurry;
(5) pouring the mixed slurry into a square groove (240mm multiplied by 115mm multiplied by 53mm) of a brick making mold, pressing and molding, then carrying out curing reaction for 7d under the conditions that the temperature is 40 ℃, the humidity is 40% and the compression molding pressure is 3.0Mpa, demolding after curing, and drying for 50h at 60 ℃ to obtain the biological brick.
According to GB/T4111-2013, namely the concrete block and brick test method, the biological brick prepared by the method in the embodiment is subjected to a strength test, and the compressive strength of the biological brick is detected to be (6.29 +/-0.93) MPa.
Comparative example 1 process for preparing biological brick by recycling municipal domestic sludge incineration ash
The difference from the embodiment 1 is that: comparative example 1 only a single strain of bacterial liquid was used, specifically: culturing Bacillus pasteurianus (BNCC 337394) with culture solution (glucose 20g/L, yeast extract 4g/L, urea 20g/L, nickel chloride hexahydrate 22.5mg/L, manganese chloride tetrahydrate 12.5mg/L, solvent water) to concentration of 4 × 106cfu/mL of bacterial liquid.
According to GB/T4111-2013, namely the concrete block and brick test method, the biological brick prepared by the method in the embodiment is subjected to a strength test, and the compressive strength of the biological brick is detected to be (5.87 +/-0.69) MPa.
Comparative example 2 process for preparing biological brick by recycling municipal domestic sludge incineration ash
And implementation ofExample 1 differs in that: comparative example 2 was prepared by culturing Bacillus pasteurii (BNCC 337394) and Bacillus pasteurii (ATCC11859) with a culture medium (glucose 20g/L, yeast extract 4g/L, urea 20g/L, nickel chloride hexahydrate 22.5mg/L, manganese chloride tetrahydrate 12.5mg/L, solvent water) to a concentration of 2X 10, respectively6cfu/mL of bacterial liquid.
According to GB/T4111-2013 'concrete block and brick test method', the biological brick prepared by the method of the embodiment is subjected to a strength test, and the compressive strength of the biological brick is detected to be (5.91 +/-0.77) MPa.
Comparative example 3 process for preparing biological brick by recycling municipal domestic sludge incineration ash
The difference from the embodiment 1 is that: in comparative example 3, after the municipal domestic sludge incineration ash is screened by 22 meshes, the municipal domestic sludge incineration ash is uniformly mixed with the curing liquid according to the material-liquid ratio (kg/L) of 1: 2.
According to GB/T4111-2013, namely the concrete block and brick test method, the biological brick prepared by the method in the embodiment is subjected to a strength test, and the compressive strength of the biological brick is detected to be (6.01 +/-0.83) MPa.
As can be seen from the compressive strength values of examples 1-3 and comparative examples 1-3, whether the combination of the Pasteurella pasteurianus and the Pasteurella pasteurianus, the bacterial liquid concentration of the Pasteurella pasteurianus and the Pasteurella pasteurianus, the amount of the curing liquid and the like can all influence the curing strength of the biological brick.
The embodiments of the present invention have been described in detail, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.
Claims (10)
1. A process for preparing a biological brick by recycling municipal domestic sludge incineration ash is characterized by comprising the following steps:
s1, respectively culturing the pasteurella and the pasteurella sarcina by the culture solution to obtain bacterial solutions;
s2, mixing the two bacterial liquids obtained in the step S1 with a saline solution uniformly to obtain a solidified liquid;
s3, mixing the municipal domestic sludge incineration ash with the solidification liquid obtained in the step S2 uniformly, adding quicklime, and mixing uniformly to obtain mixed slurry;
and S4, pouring the mixed slurry obtained in the step S3 into a brick making mold, pressing and molding, then placing the mixture under a certain temperature, humidity and compression molding pressure for curing for a period of time, and demolding and drying after curing to obtain the biological brick.
2. The process for recycling municipal domestic sludge incineration ash to prepare the biological brick as claimed in claim 1, wherein the concentration of the pasteurella and the pasteurella sarcina in step S1 are both (3-5) x 106cfu/mL。
3. The process for recycling municipal domestic sludge incineration ash for preparing a biological brick according to claim 1, wherein the culture solution of step S1 comprises 15-25g/L glucose, 3-5g/L yeast extract, 15-25g/L urea, 20-25mg/L nickel chloride hexahydrate, and 10-15mg/L manganese chloride tetrahydrate.
4. The process for preparing the biological brick from the municipal domestic sludge incineration ash as a resource according to claim 1, wherein the volume ratio of the two bacterial liquids in the step S2 is 1: 1.
5. The process for recycling municipal domestic sludge incineration ash for manufacturing a bio-brick according to claim 1, wherein the saline solution of step S2 comprises 2-3mol/L calcium lactate and 2-3mol/L magnesium chloride.
6. The process for recycling municipal domestic sludge incineration ash for preparing a biological brick according to claim 1, wherein the volume ratio of the bacterial liquid to the saline solution in step S2 is 1: 1.
7. The process for recycling municipal solid sludge incineration ash to prepare the biological brick according to claim 1, wherein the feed-liquor ratio of the municipal solid sludge incineration ash to the curing liquid in step S3 is 1: 3-6.
8. The process for preparing the biological brick as the resource of the municipal domestic sludge incineration ash as claimed in claim 1, wherein the weight ratio of the municipal domestic sludge incineration ash to the quicklime in step S3 is 2-5: 1.
9. The process of claim 1, wherein the curing temperature of step S4 is 30-40 ℃, the humidity is 30-40%, the compression molding pressure is 2.5-3.0Mpa, and the time is 7-12 days.
10. The process for recycling municipal solid sludge incineration ash to prepare the biological brick according to claim 1, wherein the municipal solid sludge incineration ash of step S3 is treated with a 22-30 mesh sieve before being mixed with the curing liquid.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104926167A (en) * | 2015-05-21 | 2015-09-23 | 天津城建大学 | Method for consolidating waste incineration fly ash heavy metal through microorganism cement mineralization |
| CN107540338A (en) * | 2017-09-22 | 2018-01-05 | 南京林业大学 | A kind of preparation method of cinder from refuse incineration microorganism brick |
| CN107973542A (en) * | 2017-10-16 | 2018-05-01 | 山东科技大学 | A kind of Leaking Stoppage in Coal Mine wind microorganism self-healing capsule and preparation method thereof and its application |
| CN108706954A (en) * | 2018-05-31 | 2018-10-26 | 广东基业长青节能环保实业有限公司 | A kind of biological brick and preparation method thereof based on recycled aggregate |
| CN110482928A (en) * | 2019-07-30 | 2019-11-22 | 西安建筑科技大学 | It is a kind of using recycled fine aggregate as self-repair concrete of carrier and preparation method thereof |
| CN110862244A (en) * | 2019-11-22 | 2020-03-06 | 华南农业大学 | Method for preparing biological brick by utilizing microorganism to induce calcium carbonate deposition |
-
2020
- 2020-10-27 CN CN202011164611.1A patent/CN112374844A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104926167A (en) * | 2015-05-21 | 2015-09-23 | 天津城建大学 | Method for consolidating waste incineration fly ash heavy metal through microorganism cement mineralization |
| CN107540338A (en) * | 2017-09-22 | 2018-01-05 | 南京林业大学 | A kind of preparation method of cinder from refuse incineration microorganism brick |
| CN107973542A (en) * | 2017-10-16 | 2018-05-01 | 山东科技大学 | A kind of Leaking Stoppage in Coal Mine wind microorganism self-healing capsule and preparation method thereof and its application |
| CN108706954A (en) * | 2018-05-31 | 2018-10-26 | 广东基业长青节能环保实业有限公司 | A kind of biological brick and preparation method thereof based on recycled aggregate |
| CN110482928A (en) * | 2019-07-30 | 2019-11-22 | 西安建筑科技大学 | It is a kind of using recycled fine aggregate as self-repair concrete of carrier and preparation method thereof |
| CN110862244A (en) * | 2019-11-22 | 2020-03-06 | 华南农业大学 | Method for preparing biological brick by utilizing microorganism to induce calcium carbonate deposition |
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Application publication date: 20210219 |