CN112958580A - Soilless covering method for domestic garbage - Google Patents
Soilless covering method for domestic garbage Download PDFInfo
- Publication number
- CN112958580A CN112958580A CN202110237956.3A CN202110237956A CN112958580A CN 112958580 A CN112958580 A CN 112958580A CN 202110237956 A CN202110237956 A CN 202110237956A CN 112958580 A CN112958580 A CN 112958580A
- Authority
- CN
- China
- Prior art keywords
- garbage
- gypsum powder
- fiber
- soilless
- pile
- 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
- 238000000034 method Methods 0.000 title claims abstract description 13
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 31
- 239000010440 gypsum Substances 0.000 claims abstract description 31
- 239000000843 powder Substances 0.000 claims abstract description 22
- 239000000835 fiber Substances 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims abstract description 11
- 229920000642 polymer Polymers 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 8
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 claims description 7
- 239000002002 slurry Substances 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 6
- 239000011268 mixed slurry Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000002657 fibrous material Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 2
- 238000007711 solidification Methods 0.000 abstract description 3
- 230000008023 solidification Effects 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract 1
- 239000004568 cement Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 229910052925 anhydrite Inorganic materials 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000007712 rapid solidification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002699 waste material Substances 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
- 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
- Y02W30/30—Landfill technologies aiming to mitigate methane emissions
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
A soilless coverage method of domestic garbage belongs to the field of garbage disposal, and is characterized in that garbage coverage materials are stirred and sprayed on the surface of a garbage pile of a garbage landfill, and the surface of the garbage pile is fully covered; the garbage covering material comprises gypsum powder, fiber and high molecular polymer; the gypsum powder is a mixture of semi-hydrated/anhydrous II type gypsum powder; the method has the characteristics of simple construction, quick solidification, environmental protection, low cost, light weight and reduction of fire hazard.
Description
Technical Field
The invention belongs to the field of garbage disposal, and particularly relates to a soilless household garbage covering method in a household garbage covering technology.
Background
Along with the development of national economy, more and more garbage is generated in the process of life and production, some of the garbage can be treated at any time or used as resources, most of the garbage is subjected to landfill treatment, namely a garbage landfill is built, the garbage is stacked together and covered in a soil covering mode, but when wind blows, the garbage covering soil is blown away, and the odor generated by the garbage cannot be completely covered, so that the odor near the garbage landfill is strong; meanwhile, a large amount of soil is needed for covering the garbage, so that the existing land resources are destroyed, and the waste of the land resources is caused; with the progress of the technology, people adopt a film covering technology to cover garbage, but the cost is high, and the covering layer is not firm and is not widely applied; a large amount of cement is consumed due to the fact that a large amount of energy is consumed in the production of the cement, the cost is high, the solidification speed is low, and new garbage, namely cement residues or useless cement blocks can be generated; moreover, the cement covered garbage pile is not beneficial to the release of biogas generated in the garbage pile, and the biogas is easy to gather to cause fire or explosion.
Disclosure of Invention
Aiming at the problems in the existing garbage landfill technology, the invention provides a garbage covering method which saves energy, has good garbage covering effect and does not generate secondary garbage, and the specific technical scheme is that the soilless covering method for the household garbage is characterized in that: stirring and spraying a garbage covering material on the surface of a garbage pile of a garbage landfill, and fully covering the surface of the garbage pile; the garbage covering material comprises gypsum powder, fiber and high molecular polymer; the gypsum powder is a mixture of semi-hydrated/anhydrous II type gypsum powder; the fiber matter is natural fiber or chemical fiber; the content of the gypsum powder is more than 80 percent by weight, the content of the fiber is 0 to 2 percent, and the content of the high molecular polymer is 0 to 2 percent; mixing the gypsum powder, the fibrous matters and the high molecular polymer, adding water, stirring to form mixed slurry, and spraying the slurry on the surface of a garbage pile; and forming a layer of closed shell on the surface of the garbage pile after the mixed slurry is solidified.
Further, the gypsum powder is a mixture of semi-hydrated/anhydrous type II gypsum powder generated after phosphogypsum is treated.
Further, the mixture of hemihydrate/anhydrite type II landplaster has an anhydrite type II landplaster content of greater than 50%.
Further, the fiber material is PP short fiber.
Further, the fiber material is glass fiber.
Advantageous effects
The invention has the advantages that the density of the garbage covering can be improved, and the covering layer can be formed by rapid solidification; the cost is low, and the construction is rapid and convenient; secondary garbage is not generated; because the garbage is domestic garbage and the humidity is high, the gypsum is converted into calcium sulfate dihydrate in a humid environment, and the methane in the garbage pile is conveniently released.
Detailed Description
To better illustrate the technical solution of the present invention, the specific embodiments of the present invention will now be illustrated; example 1, in this example, a mixture of anhydrous type II gypsum and hemihydrate gypsum, in which the content of anhydrous type II gypsum after calcination of phosphogypsum is 60%, is selected as mixed gypsum powder; selecting 89% of mixed gypsum powder, selecting 1% of PP short fiber as fiber, and the balance of other additives, wherein the other additives comprise deodorizers and the like; selecting 0.8% of high molecular polymer which is commonly used in the industry, mixing the materials, adding water, stirring uniformly, and spraying the mixture on the surface of a garbage pile by using a gypsum slurry spraying machine which is commonly used in the industry, wherein the thickness of the mixture is the minimum spraying thickness by completely covering the outer surface of the garbage pile, and the garbage pile has uneven surface and numerous bulges or depressions; because the mixed gypsum slurry is high in solidification speed, the mixed gypsum slurry can be solidified into a shell which completely covers the garbage pile in a short time, and the overflow of methane generated by the garbage pile is not influenced, which cannot be realized by cement slurry.
Example 2, in this example, a mixture of anhydrous type II gypsum calcined with phosphogypsum and hemihydrate gypsum was selected, wherein the content of anhydrous type II gypsum was 80%; selecting 95% of mixed gypsum powder, 1.5% of glass fiber as a fiber, 1.5% of high molecular polymer and the balance of other additives; the gypsum slurry is formed by mixing the raw materials, adding water and stirring, and the proportion of various materials is properly adjusted according to different proportions of main components of the garbage so as to meet special requirements, such as emphasis on air permeability or coverage and the like.
Claims (5)
1. A soilless household garbage coverage method is characterized in that: stirring and spraying a garbage covering material on the surface of a garbage pile of a garbage landfill, and fully covering the surface of the garbage pile; the garbage covering material comprises gypsum powder, fiber and high molecular polymer; the gypsum powder is a mixture of semi-hydrated/anhydrous II type gypsum powder; the fiber matter is natural fiber or chemical fiber; the content of the gypsum powder is more than 80 percent by weight, the content of the fiber is 0 to 2 percent, and the content of the high molecular polymer is 0 to 2 percent; mixing the gypsum powder, the fibrous matters and the high molecular polymer, adding water, stirring to form mixed slurry, and spraying the slurry on the surface of a garbage pile; and forming a layer of closed shell on the surface of the garbage pile after the mixed slurry is solidified.
2. The soilless household garbage mulching method as claimed in claim 1, characterized in that: the gypsum powder is a mixture of semi-hydrated/anhydrous type II gypsum powder generated after phosphogypsum is treated.
3. The soilless household garbage mulching method as claimed in claim 2, characterized in that: the content of the anhydrous II gypsum powder in the mixture of the semi-hydrated/anhydrous II gypsum powder is more than 50 percent.
4. The soilless household garbage mulching method as claimed in claim 1, characterized in that: the fiber is PP short fiber.
5. The soilless household garbage mulching method as claimed in claim 1, characterized in that: the fiber material is glass fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110237956.3A CN112958580A (en) | 2021-03-04 | 2021-03-04 | Soilless covering method for domestic garbage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110237956.3A CN112958580A (en) | 2021-03-04 | 2021-03-04 | Soilless covering method for domestic garbage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112958580A true CN112958580A (en) | 2021-06-15 |
Family
ID=76276429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110237956.3A Pending CN112958580A (en) | 2021-03-04 | 2021-03-04 | Soilless covering method for domestic garbage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112958580A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990013598A1 (en) * | 1989-05-10 | 1990-11-15 | Newastecon, Inc. | Sprayable composition |
| JP2003126797A (en) * | 2001-10-22 | 2003-05-07 | Kurita Water Ind Ltd | Dust-proof agent and dust-proofing method |
| US20050220542A1 (en) * | 2004-03-31 | 2005-10-06 | Marsh Danny L | Landfill cover composition and method |
| CN104860625A (en) * | 2015-05-14 | 2015-08-26 | 深圳市五大湖新概念环保科技有限公司 | Soilless cover material for sanitary landfill of solid waste garbage |
-
2021
- 2021-03-04 CN CN202110237956.3A patent/CN112958580A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1990013598A1 (en) * | 1989-05-10 | 1990-11-15 | Newastecon, Inc. | Sprayable composition |
| JP2003126797A (en) * | 2001-10-22 | 2003-05-07 | Kurita Water Ind Ltd | Dust-proof agent and dust-proofing method |
| US20050220542A1 (en) * | 2004-03-31 | 2005-10-06 | Marsh Danny L | Landfill cover composition and method |
| CN104860625A (en) * | 2015-05-14 | 2015-08-26 | 深圳市五大湖新概念环保科技有限公司 | Soilless cover material for sanitary landfill of solid waste garbage |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |