CN114054466A - Method for disinfecting and deodorizing refuse landfill by using calcium silicate powder - Google Patents
Method for disinfecting and deodorizing refuse landfill by using calcium silicate powder Download PDFInfo
- Publication number
- CN114054466A CN114054466A CN202111321868.8A CN202111321868A CN114054466A CN 114054466 A CN114054466 A CN 114054466A CN 202111321868 A CN202111321868 A CN 202111321868A CN 114054466 A CN114054466 A CN 114054466A
- Authority
- CN
- China
- Prior art keywords
- deodorant
- calcium
- powder
- garbage
- domestic
- 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
- 239000000843 powder Substances 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000000378 calcium silicate Substances 0.000 title claims abstract description 22
- 229910052918 calcium silicate Inorganic materials 0.000 title claims abstract description 22
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 230000001877 deodorizing effect Effects 0.000 title claims abstract description 14
- 230000000249 desinfective effect Effects 0.000 title abstract description 12
- 239000002781 deodorant agent Substances 0.000 claims abstract description 59
- 239000010813 municipal solid waste Substances 0.000 claims abstract description 44
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000004332 deodorization Methods 0.000 claims abstract description 20
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 13
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 11
- 230000001954 sterilising effect Effects 0.000 claims abstract description 8
- OSMSIOKMMFKNIL-UHFFFAOYSA-N calcium;silicon Chemical compound [Ca]=[Si] OSMSIOKMMFKNIL-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims abstract description 5
- 239000010802 sludge Substances 0.000 claims description 21
- 238000005096 rolling process Methods 0.000 claims description 16
- 229910052791 calcium Inorganic materials 0.000 claims description 13
- 239000011575 calcium Substances 0.000 claims description 13
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 12
- 239000000292 calcium oxide Substances 0.000 claims description 12
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 239000010791 domestic waste Substances 0.000 claims description 3
- 239000010806 kitchen waste Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000011863 silicon-based powder Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 abstract description 11
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract description 9
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 abstract description 9
- 229910000037 hydrogen sulfide Inorganic materials 0.000 abstract description 9
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 abstract description 8
- 150000003568 thioethers Chemical class 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 5
- 239000000149 chemical water pollutant Substances 0.000 abstract description 4
- 150000001412 amines Chemical class 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 238000009270 solid waste treatment Methods 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 6
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 3
- 239000000920 calcium hydroxide Substances 0.000 description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000006303 photolysis reaction Methods 0.000 description 1
- 230000015843 photosynthesis, light reaction Effects 0.000 description 1
- 239000000419 plant extract Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L11/00—Methods specially adapted for refuse
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
- A61L2/23—Solid substances, e.g. granules, powders, blocks, tablets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/81—Solid phase processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B1/00—Dumping solid waste
- B09B1/004—Covering of dumping sites
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/20—Waste processing or separation
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/30—Landfill technologies aiming to mitigate methane emissions
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Biomedical Technology (AREA)
- Medicinal Chemistry (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
The invention belongs to the technical field of solid waste treatment. The invention provides a method for disinfecting and deodorizing a refuse landfill by using calcium silicate powder, which is characterized in that a deodorant is covered on household garbage for disinfection and deodorization; sequentially covering a plurality of layers of domestic garbage and deodorant; the heights of each layer of domestic garbage and each layer of deodorant are 1.8-2.2 m and 0.15-0.2 m respectively; the deodorant is a mixture of silicon calcium powder and titanium dioxide in a mass ratio of 1: 0.05-0.1. The deodorant disclosed by the invention can effectively inhibit volatilization of ammonia gas, organic amine, hydrogen sulfide, mercaptan, thioether and other organic malodorous gases in landfill leachate, can quickly, safely and multiply deodorize, and has a disinfecting and sterilizing effect due to the high alkalinity of the deodorant. The method has the advantages of simple process, low cost, strong construction property and convenient industrial application, and brings certain social benefit for solving the environmental pollution of wastes.
Description
Technical Field
The invention relates to the technical field of solid waste treatment, in particular to a method for disinfecting and deodorizing a refuse landfill by using calcium silicate powder.
Background
With the rapid development of social economy, the urbanization level and the domestic consumption level of residents are greatly improved, and the quantity of urban domestic garbage is increased day by day. Although the technical researches of municipal domestic waste sanitary landfill, landfill leachate treatment, landfill recovery and the like are in breakthrough progress, the problem of stink pollution of the landfill site needs to be paid sufficient attention.
The domestic garbage produces high concentration liquid-garbage percolate with organic or inorganic components under the biochemical degradation of compaction, fermentation and the like and the seepage action of precipitation and underground water in the stacking and landfill processes. The sources of ammonia gas, hydrogen sulfide, mercaptan, thioether and organic amine in the landfill are mainly volatilization of leachate, so that the control of reducing the volatilization of the ammonia gas and the hydrogen sulfide in the leachate is particularly critical to the control of the stink of the landfill.
At present, methods for disinfecting and deodorizing garbage mainly comprise physical deodorization, chemical deodorization, microbial deodorization, plant extract deodorization, fragrance shielding deodorization and the like, however, the methods have the defects of incomplete coverage, harm to human health, harsh conditions, long deodorization time, high treatment cost and the like. Wherein, the chemical deodorization is usually carried out by directly spraying dry calcium hydroxide powder on household garbage for rolling, and utilizing the reaction of calcium hydroxide and malodorous gas to kill germs by high-alkaline components, but the dry calcium hydroxide powder has poor sterilization and disinfection effects and high cost. Therefore, the development of a method for disinfecting and deodorizing a landfill by using a disinfectant and a deodorant which have high adsorption rates and can react with malodorous gases has very important economic and environmental benefits.
Disclosure of Invention
The invention aims to provide a method for disinfecting and deodorizing a refuse landfill by using calcium silicate powder aiming at the defects of the prior art, and aims to solve the problems of poor deodorizing effect and disinfecting effect, high cost, long time and the like of a deodorant in the prior art.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a method for disinfecting and deodorizing a refuse landfill by using calcium silicate powder, which is characterized in that a deodorant is covered on household garbage for disinfection and deodorization;
sequentially covering a plurality of layers of domestic garbage and deodorant; the height of each layer of domestic garbage is 1.8-2.2 m, and the height of each layer of deodorant is 0.15-0.2 m;
the deodorant is a mixture of calcium silicate powder and titanium dioxide; the mass ratio of the calcium silicate powder to the titanium dioxide is 1: 0.05-0.1.
Preferably, the mass ratio of the deodorant to the household garbage is 1: 8-10.
Preferably, the time for disinfection and deodorization is 0.5-8 h.
Preferably, the number of layers of the household garbage and the deodorant is the same, and the number of layers of the household garbage and the deodorant is 2-3 independently.
Preferably, the domestic waste and the deodorant are subjected to a rolling treatment after each coating of the deodorant.
Preferably, the domestic garbage is kitchen garbage or black and odorous sludge.
Preferably, the silico-calcium powder is obtained by mixing calcium oxide powder and domestic sludge, and then sequentially drying, burning and cooling; in the calcium silicon powder, the mass fraction of silicon is 15-20%, and the mass fraction of calcium is 75-82%.
Preferably, the mass ratio of the calcium oxide powder to the domestic sludge is 30-50: 100; the particle size of the calcium oxide powder is less than or equal to 400 mu m; the water content of the domestic sludge is less than or equal to 70 percent.
The beneficial effects of the invention include the following:
1) the deodorant disclosed by the invention can effectively inhibit volatilization of ammonia gas, organic amine, hydrogen sulfide, mercaptan, thioether and other organic malodorous gases in landfill leachate, can quickly, safely and multiply deodorize, and has a disinfecting and sterilizing effect due to the high alkalinity of the deodorant.
2) The deodorant disclosed by the invention is high in microporosity, large in specific surface area, good in adsorption effect, high in adsorption rate and certain in photolysis property, and can effectively remove the odor of a refuse landfill.
3) The method has the advantages of simple process, low cost, strong construction performance and convenient industrial application, and brings certain social benefits for solving the environmental pollution of wastes.
4) The method of the invention creates a new way for large-scale resource application of the large amount of municipal domestic sludge.
Detailed Description
The invention provides a method for disinfecting and deodorizing a refuse landfill by using calcium silicate powder, which is characterized in that a deodorant is covered on household garbage for disinfection and deodorization;
sequentially covering a plurality of layers of domestic garbage and deodorant; the height of each layer of domestic garbage is 1.8-2.2 m, and the height of each layer of deodorant is 0.15-0.2 m;
the deodorant is a mixture of calcium silicate powder and titanium dioxide; the mass ratio of the calcium silicate powder to the titanium dioxide is 1: 0.05-0.1.
The height of each layer of domestic garbage is preferably 1.9-2.1 m, and more preferably 2.0 m; the height of each layer of deodorant is preferably 0.16-0.19 m, and more preferably 0.17-0.18 m.
The calcium silicate powder covered by the garbage landfill for disinfection and deodorization has smaller thickness, does not influence the height of the garbage pile body, and has better deodorization and sterilization effects.
The mass ratio of the calcium silicon powder to the titanium dioxide is preferably 1: 0.06-0.09, and more preferably 1: 0.07-0.08.
The mass ratio of the deodorant to the household garbage is preferably 1: 8-10, and more preferably 1: 9.
The time for disinfection and deodorization is preferably 0.5-8 h, more preferably 1-7 h, and even more preferably 3-5 h.
The number of layers of the household garbage and the deodorant is preferably the same, and the number of layers of the household garbage and the deodorant is preferably 2-3 independently.
After each layer of deodorant is covered, the domestic garbage and the deodorant are preferably subjected to rolling treatment.
The domestic garbage is preferably kitchen garbage or black and odorous sludge.
The silico-calcium powder is self-made silico-calcium powder, preferably is prepared by mixing calcium oxide powder and domestic sludge, and then sequentially drying, burning and cooling; in the calcium silicate powder, the mass fraction of silicon is preferably 15-20%, more preferably 16-19%, and more preferably 17-18%; the mass fraction of calcium is preferably 75 to 82%, more preferably 77 to 80%, and even more preferably 78%.
The mass ratio of the calcium oxide powder to the domestic sludge is preferably 30-50: 100, more preferably 35-45: 100, and even more preferably 38-42: 100; the particle size of the calcium oxide powder is preferably less than or equal to 400 mu m, and more preferably less than or equal to 370 mu m; the water content of the domestic sludge is preferably less than or equal to 70%, more preferably less than or equal to 68%, and even more preferably less than or equal to 65%.
The drying temperature is preferably 300-500 ℃, more preferably 330-450 ℃, and more preferably 370-420 ℃; the drying time is preferably 2-3 h, and more preferably 2.5 h; the incineration temperature is preferably 600-750 ℃, further preferably 650-720 ℃, further preferably 680-700 ℃, and the incineration time is preferably 1-2 hours, further preferably 1.5 hours; the cooling is preferably carried out at room temperature.
The silicon calcium powder does not contain moisture, is easy to harden and has stronger cementing activity; can react with mercaptan, thioether, ammonia gas and hydrogen sulfide in the leachate; the calcium silicate powder has a porous structure, high microporosity, large specific surface area, good water absorption and good odor absorption effect.
The technical solutions provided by the present invention are described in detail below with reference to examples, but they should not be construed as limiting the scope of the present invention.
Example 1
3kg of calcium oxide powder (with the particle size of 390 mu m) and 10kg of domestic sludge (with the water content of 70%) of an urban domestic sewage treatment plant are uniformly mixed and then dried, and then dried for 3h at 350 ℃, and burned for 2h at 650 ℃ and then cooled, so that the silico-calcium powder with the silicon mass fraction of 16% and the calcium mass fraction of 78% is obtained. 1kg of silicon calcium powder and 0.06kg of titanium dioxide are uniformly mixed to obtain the deodorant.
Covering a deodorant with the height of 0.15m on the kitchen waste with the height of 1.9m, and performing rolling treatment on the kitchen waste and the deodorant; after the rolling treatment is finished, sequentially covering a layer of kitchen garbage with the height of 1.9m and a layer of deodorant with the height of 0.15m on the deodorant, and performing rolling treatment again, wherein the mass ratio of the deodorant to the kitchen garbage is 1: 8. And after the rolling treatment is finished, sterilizing and deodorizing the kitchen garbage by using the calcium silicate powder.
In the embodiment 1, the removal rate of organic malodorous gases such as hydrogen sulfide, ammonia gas, mercaptan, thioether and the like after disinfection and deodorization for 1 hour can reach 66%, the removal rate for 5 hours can reach 92%, the removal rate for 8 hours can reach 98%, and the emission concentration of the malodorous gases is lower than the limit value of the first-level standard in the malodorous pollutant emission standard (GB 14554-93).
Example 2
4.5kg of calcium oxide powder (with the particle size of 380 mu m) and 10kg of domestic sludge (with the water content of 65%) of an urban domestic sewage treatment plant are uniformly mixed and then dried, and then the mixture is dried for 2 hours at 450 ℃ in sequence, and is cooled after being burned for 1 hour at 720 ℃ to obtain the silico-calcium powder with the mass fraction of silicon of 20% and the mass fraction of calcium of 75%. 1kg of calcium silicate powder and 0.09kg of titanium dioxide are uniformly mixed to obtain the deodorant.
Covering a deodorant with the height of 0.19m on black and odorous sludge with the height of 2.1m, and performing rolling treatment on the black and odorous sludge and the deodorant; and after the rolling treatment is finished, sequentially covering a layer of black and odorous sludge with the height of 2.1m and a layer of deodorant with the height of 0.19m on the deodorant, and rolling again, wherein the mass ratio of the deodorant to the black and odorous sludge is 1: 10. And after the rolling treatment is finished, the black and odorous sludge is disinfected and deodorized by using the calcium silicate powder.
In the embodiment 2, the removal rate of organic malodorous gases such as hydrogen sulfide, ammonia gas, mercaptan, thioether and the like after disinfection and deodorization for 1 hour can reach 69%, the removal rate for 5 hours can reach 94%, the removal rate for 8 hours can reach 99%, and the emission concentration of the malodorous gases is lower than the limit value of the first-level standard in the malodorous pollutant emission standard (GB 14554-93).
Example 3
4kg of calcium oxide powder (with the particle size of 370 mu m) and 10kg of domestic sludge (with the water content of 68 percent) of an urban domestic sewage treatment plant are uniformly mixed and then dried, and then dried for 2.5 hours at 400 ℃ in sequence, and cooled after being burned for 1.5 hours at 700 ℃ to obtain the silico-calcium powder with the mass fraction of silicon of 18 percent and the mass fraction of calcium of 78 percent. 1kg of calcium silicate powder and 0.08kg of titanium dioxide are uniformly mixed to obtain the deodorant.
Covering a deodorant with the height of 0.18m on kitchen garbage with the height of 2.0m, and performing rolling treatment on the kitchen garbage and the deodorant; and after the rolling treatment is finished, sequentially covering kitchen garbage with the height of 2.0m and deodorant with the height of 0.18m on the deodorant, and performing the rolling treatment, wherein the same steps are repeated twice, the kitchen garbage and the deodorant are both 3 layers, and the mass ratio of the deodorant to the kitchen garbage is 1: 9. And after the rolling treatment is finished, sterilizing and deodorizing the kitchen garbage by using the calcium silicate powder, wherein the time for sterilizing and deodorizing is 5 h.
In example 3, the removal rate of organic malodorous gases such as hydrogen sulfide, ammonia gas, mercaptan, thioether and the like after disinfection and deodorization for 1 hour can reach 70%, the removal rate for 5 hours can reach 95%, the removal rate for 8 hours can reach 99%, and the emission concentration of the malodorous gases is lower than the limit value of the first-level standard in the malodorous pollutant emission standard (GB 14554-93).
From the examples 1 to 3, the deodorant disclosed by the invention can effectively inhibit the volatilization of ammonia gas, hydrogen sulfide, mercaptan, thioether and other organic malodorous gases in the landfill leachate, and achieves the effects of rapid, safe and multi-point deodorization.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A method for sterilizing and deodorizing a refuse landfill by using calcium silicate powder is characterized in that a deodorant is covered on household garbage for sterilization and deodorization;
sequentially covering a plurality of layers of domestic garbage and deodorant; the height of each layer of domestic garbage is 1.8-2.2 m, and the height of each layer of deodorant is 0.15-0.2 m;
the deodorant is a mixture of calcium silicate powder and titanium dioxide; the mass ratio of the calcium silicate powder to the titanium dioxide is 1: 0.05-0.1.
2. The method according to claim 1, wherein the mass ratio of the deodorant to the household garbage is 1: 8-10.
3. The method according to claim 1 or 2, wherein the time for disinfection and deodorization is 0.5-8 h.
4. The method according to claim 3, wherein the number of layers of the household garbage and the deodorant is the same, and the number of layers of the household garbage and the deodorant is 2-3 independently.
5. The method according to claim 3, wherein the garbage and deodorant are subjected to a rolling process after each coating of the deodorant.
6. The method according to claim 4 or 5, wherein the domestic waste is kitchen waste or black and odorous sludge.
7. The method according to claim 6, wherein the silico-calcium powder is obtained by mixing calcium oxide powder and domestic sludge, and then sequentially drying, burning and cooling; in the calcium silicon powder, the mass fraction of silicon is 15-20%, and the mass fraction of calcium is 75-82%.
8. The method according to claim 7, wherein the mass ratio of the calcium oxide powder to the domestic sludge is 30-50: 100; the particle size of the calcium oxide powder is less than or equal to 400 mu m; the water content of the domestic sludge is less than or equal to 70 percent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111321868.8A CN114054466A (en) | 2021-11-09 | 2021-11-09 | Method for disinfecting and deodorizing refuse landfill by using calcium silicate powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111321868.8A CN114054466A (en) | 2021-11-09 | 2021-11-09 | Method for disinfecting and deodorizing refuse landfill by using calcium silicate powder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114054466A true CN114054466A (en) | 2022-02-18 |
Family
ID=80274051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111321868.8A Pending CN114054466A (en) | 2021-11-09 | 2021-11-09 | Method for disinfecting and deodorizing refuse landfill by using calcium silicate powder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114054466A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102319716A (en) * | 2011-06-02 | 2012-01-18 | 福建工程学院 | Covering layer of sanitary landfill |
| CN103406328A (en) * | 2013-08-28 | 2013-11-27 | 上海交通大学 | Complex cover material for refuse landfill and application method thereof |
| CN107442088A (en) * | 2017-09-18 | 2017-12-08 | 江苏科力特环保科技有限公司 | A kind of acticarbon |
| CN109174926A (en) * | 2018-10-31 | 2019-01-11 | 湖南新九方科技有限公司 | A kind of consumer waste filling and embedding method |
| CN110237803A (en) * | 2019-06-18 | 2019-09-17 | 南京永能新材料有限公司 | A kind of environment-friendly garbage deodorant and preparation method thereof |
| CN111286339A (en) * | 2020-01-08 | 2020-06-16 | 华仲动芯新材料(盱眙)有限公司 | Mineral multifunctional fruit tree soil conditioner and preparation method thereof |
| CN113040170A (en) * | 2019-12-28 | 2021-06-29 | 合肥杰事杰新材料股份有限公司 | Antibacterial agent, preparation method thereof and antibacterial composition |
-
2021
- 2021-11-09 CN CN202111321868.8A patent/CN114054466A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102319716A (en) * | 2011-06-02 | 2012-01-18 | 福建工程学院 | Covering layer of sanitary landfill |
| CN103406328A (en) * | 2013-08-28 | 2013-11-27 | 上海交通大学 | Complex cover material for refuse landfill and application method thereof |
| CN107442088A (en) * | 2017-09-18 | 2017-12-08 | 江苏科力特环保科技有限公司 | A kind of acticarbon |
| CN109174926A (en) * | 2018-10-31 | 2019-01-11 | 湖南新九方科技有限公司 | A kind of consumer waste filling and embedding method |
| CN110237803A (en) * | 2019-06-18 | 2019-09-17 | 南京永能新材料有限公司 | A kind of environment-friendly garbage deodorant and preparation method thereof |
| CN113040170A (en) * | 2019-12-28 | 2021-06-29 | 合肥杰事杰新材料股份有限公司 | Antibacterial agent, preparation method thereof and antibacterial composition |
| CN111286339A (en) * | 2020-01-08 | 2020-06-16 | 华仲动芯新材料(盱眙)有限公司 | Mineral multifunctional fruit tree soil conditioner and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR20130115920A (en) | Rostellum having good removing effect of offensive odor | |
| CN114054466A (en) | Method for disinfecting and deodorizing refuse landfill by using calcium silicate powder | |
| CN106310922A (en) | Microorganism deodorant for solid household garbage | |
| CN106512707A (en) | Microbial deodorizer with complex photosynthetic bacteria and bioactive enzyme | |
| CN106310925A (en) | Microorganism deodorant with brown alga extract, Houttuynia cordata and mint | |
| CN106475399A (en) | Treatment of urban garbage microbial deodorant | |
| CN106512706A (en) | Microbial deodorant for municipal fixed garbage treatment | |
| CN106311726A (en) | Composite deodorant for large waste treatment | |
| CN106310921A (en) | Deodorant with fresh ginger, Houttuynia cordata extract and active agent | |
| CN106492622A (en) | Anabena Chinese rose organized enzyme biology compound deodorizer | |
| CN106492623A (en) | Soot microbial deodorant | |
| CN106512708A (en) | Urban excitation compound efficient microorganism deodorant | |
| CN106430885A (en) | Deodorizer with houttuynia cordata | |
| CN106475403A (en) | Life garbage-cleaning compound deodorizer | |
| CN106430884A (en) | Composite deodorant with Chinese rose composite photosynthetic bacteria | |
| CN106799133A (en) | Complex microorganism deodorant with improvement denitrifying bacterium peppermint lemon spirulina | |
| CN106731712A (en) | Complex microorganism deodorant with improvement denitrifying bacterium Radix Codonopsis peppermint spirulina | |
| CN106799135A (en) | Complex microorganism deodorant with improvement denitrifying bacterium sweet osmanthus lemon spirulina | |
| CN106731717A (en) | Complex microorganism deodorant with improvement denitrifying bacterium Radix Codonopsis ginger spirulina | |
| CN106731718A (en) | Complex microorganism deodorant with improvement denitrifying bacterium ginger lemon spirulina | |
| CN106731764A (en) | Complex microorganism deodorant with improvement denitrifying bacterium sweet osmanthus peppermint spirulina | |
| CN106731711A (en) | Complex microorganism deodorant with improvement denitrifying bacterium Radix Codonopsis lemon spirulina | |
| CN106731759A (en) | Complex microorganism deodorant with improvement denitrifying bacterium ginger sweet osmanthus spirulina | |
| CN106731733A (en) | Complex microorganism deodorant with improvement denitrifying bacterium Radix Codonopsis peppermint anabena | |
| CN106807216A (en) | Complex microorganism deodorant with Radix Codonopsis peppermint lemon spirulina |
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 |