CN111360022A - Landfill method beneficial to comprehensive treatment of household garbage - Google Patents
Landfill method beneficial to comprehensive treatment of household garbage Download PDFInfo
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- CN111360022A CN111360022A CN202010184743.4A CN202010184743A CN111360022A CN 111360022 A CN111360022 A CN 111360022A CN 202010184743 A CN202010184743 A CN 202010184743A CN 111360022 A CN111360022 A CN 111360022A
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- China
- Prior art keywords
- layer
- landfill
- soil
- garbage
- dry ice
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Links
- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000009286 beneficial effect Effects 0.000 title claims abstract description 7
- 239000002689 soil Substances 0.000 claims abstract description 54
- 238000001179 sorption measurement Methods 0.000 claims abstract description 31
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 30
- 235000011089 carbon dioxide Nutrition 0.000 claims abstract description 30
- 239000000463 material Substances 0.000 claims abstract description 21
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 description 16
- 238000001514 detection method Methods 0.000 description 11
- 238000010521 absorption reaction Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- VCUFZILGIRCDQQ-KRWDZBQOSA-N N-[[(5S)-2-oxo-3-(2-oxo-3H-1,3-benzoxazol-6-yl)-1,3-oxazolidin-5-yl]methyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C1O[C@H](CN1C1=CC2=C(NC(O2)=O)C=C1)CNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F VCUFZILGIRCDQQ-KRWDZBQOSA-N 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 239000012767 functional filler Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000009323 psychological health Effects 0.000 description 1
- 239000012047 saturated solution Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood 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
-
- 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
The invention belongs to the technical field of refuse landfill, and particularly relates to a landfill method beneficial to comprehensive treatment of household refuse, wherein an adsorption material or a mixture consisting of the adsorption material and landfill earth is paved at the bottom of a landfill pit to obtain an adsorption layer; spreading the household garbage to be buried above the adsorption layer to obtain a household garbage layer; and firstly paving a first covering soil layer above the domestic garbage layer, then paving a layer of dry ice above the first covering soil layer, and immediately paving a second covering soil layer above the dry ice layer.
Description
Technical Field
The invention belongs to the technical field of garbage landfill, and particularly relates to a landfill method beneficial to comprehensive treatment of household garbage.
Background
Sanitary landfill is a main mode for harmless disposal of domestic garbage in China, and the main problems existing in domestic garbage landfill are as follows: the domestic garbage is often wet, the pollution degree of liquid seeped from the garbage is large, and the liquid seeps into the soil to damage the structure and the physicochemical property of the soil, so that the fertility and the moisture of the soil are reduced; the domestic garbage can emit stink, even if the upper layer of the garbage is buried by the covering soil, a large amount of stink gas in the garbage layer continuously rises, finally coexists with the covering soil layer for burying and is emitted into the air again through the pore passages and the gaps on the covering soil layer, and therefore the living environment and the physical and psychological health of residents around a landfill site are affected.
The adsorbing material can absorb the percolate of the household garbage and can also absorb the stink emitted by the household garbage, and the difference is that: the absorption of the percolate by the absorption material is to inhibit the percolate from flowing and permeating to the underground, so a layer of absorption material is paved in the landfill pit before the domestic garbage is buried; the absorption of the odor is to inhibit the odor from diffusing to the outside air, and if the absorption material is used to absorb the odor, a layer of absorption material is generally laid above the domestic garbage layer after the domestic garbage is laid in the landfill pit, so as to intercept the odor diffused from the domestic garbage and prevent the odor from further diffusing to the outside of the landfill pit.
It can be seen that the adsorption material needs to be divided into two layers, and each layer of adsorption material basically only acts on one of seepage or stink, so that the best utilization is not easy to achieve (even if the adsorption material is saturated with the seepage for adsorbing garbage, the adsorption material still has considerable adsorption capacity for stink gas, namely, the adsorption material is saturated with sodium chloride dissolved in water, but the saturated solution still has the capacity for dissolving another solute, such as sodium hydroxide).
Disclosure of Invention
In order to solve the technical problems, the invention provides a landfill method which is beneficial to the comprehensive treatment of household garbage,
(1) paving an adsorption material or a mixture consisting of the adsorption material and the landfill covering soil in the landfill pit to obtain an adsorption layer, wherein the mass ratio of the adsorption material to the landfill covering soil is 100: 0 to 230 of the total amount of the organic solvent,
the thickness of the laid adsorption layer is 35-50 cm,
(2) spreading the household garbage to be buried above the adsorption layer obtained in the step (1) to obtain a household garbage layer,
the thickness of the laid household garbage layer is 100-200 cm,
(3) a first covering soil layer is firstly paved above the domestic garbage layer obtained in the step (2), then a layer of dry ice is paved above the first covering soil layer, and a second covering soil layer is immediately paved above the dry ice layer,
before the dry ice is paved, a first soil covering layer with a certain thickness is paved, so that: the granular dry ice can stably fall on the upper part of the household garbage layer,
the thickness of the laid first covering soil layer is 8-15 cm, and the laying amount of the dry ice is 50-200 g/m2And the thickness of the laid second soil covering layer is 60-100 cm.
The main design of this application lies in: an adsorption layer is laid below the domestic garbage layer, seepage liquid seeped from the domestic garbage is adsorbed by the adsorption layer, and further seepage of the seepage liquid into soil is avoided, which is similar to the existing design;
the domestic garbage is filled into the landfill pit, the landfill pit is not simply covered with soil or other functional fillers for burying, but a layer of dry ice is paved on the top of the domestic garbage layer, then the dry ice is immediately covered with the soil for burying, the volume of the gasified dry ice is greatly increased compared with that of solid dry ice, so that gas is generated on the top of the domestic garbage layer, and the dry ice layer is covered with a covering soil layer with considerable mass, so that the generated gas cannot rise and leave integrally and quickly, the gas expands and diffuses in the area, and a part of the gas inevitably expands and extends towards the garbage layer, so that the malodorous gas in the domestic garbage is pushed to the adsorption layer and is basically adsorbed irreversibly after contacting the adsorption material (although most of the gas generated by the gasified dry ice finally rises and overflows from the landfill pit through gaps inside the materials, but the action of pushing malodorous gases toward the adsorption layer to be adsorbed has been already completed),
in addition, as the thicker covering soil is covered above the dry ice, the soil has certain heat preservation and insulation effects, so that the dry ice buried below cannot be gasified and disappear quickly, and the loss of the dry ice in a short period is not too large compared with the situation that people are used to a heat preservation box for storing the dry ice. The swelling behaviour of the dry ice described in the preceding paragraph is therefore slow-releasing and sustained, which contributes to a more permanent and sufficient removal of malodours.
Detailed Description
Example 1
A landfill method beneficial to comprehensive treatment of household garbage, the landfill time is 9 months (the whole day of the landfill day is sunny),
(1) the wood chips are used as an adsorbing material and are covered with landfill soil (dry soil)100: 30, and then paving the mixture in a landfill pit to obtain an adsorption layer, wherein the thickness of the paved adsorption layer is 45cm, and the mass consumption is 17.6kg/m2；
(2) Placing the household garbage to be buried above the adsorption layer obtained in the step (1) to obtain a household garbage layer, wherein the thickness of the laid household garbage layer is 140 cm;
(3) a first soil covering layer (dry soil) is paved above the household garbage layer obtained in the step (2), the thickness of the paved first soil covering layer is 10cm, and the mass consumption is 171kg/m2，
Uniformly paving a layer of dry ice (commercially available spherical dry ice with the particle size of 5 mm) above the first covering layer, wherein the paving amount of the dry ice is 70g/m2Immediately paving a second covering soil layer (dry soil) above the dry ice layer, wherein the thickness of the paved second covering soil layer is 80cm, and the mass consumption is 1360kg/m2。
And (3) starting timing after the second covering soil layer is laid, detecting the odor concentration at a position 1 m above the second covering soil layer by using a malodorous gas detector with the model number of JC-ADT-EFF at different time nodes, and obtaining the detection results shown in the following table.
Comparative example 1
The conventional method is adopted for landfill, the distance between the landfill position and the landfill pit of the embodiment 1 is 1.3 kilometers, the landfill time is the same as that of the embodiment 1, a dry ice layer is not paved, and the rest of the operation is the same as that of the embodiment 1:
(1) same as example 1, step (1);
(2) the same batch of household garbage as in example 1 was placed on the adsorption layer obtained in step (1), and the operation was the same as in step (2) of example 1;
(3) a first soil covering layer (dry soil) is laid above the domestic garbage layer obtained in the step (2), and then a second soil covering layer (dry soil) is laid, and the related operation corresponds to the step (3) in the example 1.
And (3) starting timing after the second covering soil layer is laid, detecting the odor concentration at a position 1 m above the second covering soil layer by using a malodorous gas detector with the model number of JC-ADT-EFF at different time nodes, and obtaining the detection results shown in the following table.
| Timing device | Example 1 | Comparative example 1 |
| 10 minutes | 852.7ppm | 813.5ppm |
| 3 hours | 193.6ppm | 176.4ppm |
| One day | 135.7ppm | 362.7ppm |
| Four days | 148.5ppm | 754.6ppm |
| Seven days | 223.2ppm | 788.2ppm |
| Fifteen days | 236.4ppm | 341.4ppm |
| Twenty days | 243.8ppm | 278.3ppm |
| Twenty-five days | 222.6ppm | 265.8ppm |
From the test results in the table above, the inhibition of the foul odor of the landfill site after the dry ice is used is obviously improved, and it can be specifically understood that:
from the test results of comparative example 1 at each time node: since the domestic garbage emits odor, when the node is '10 minutes', the domestic garbage is just buried and covered by the covering soil, and the odor nearby is not obviously dispersed, so that the detection value is higher; when the node is '3 hours', the external odor is further dissipated, and meanwhile, the original offensive odor in the garbage layer is not emitted through the upper layer of the covering soil, so that the detection value is reduced; the detection values of three nodes of one day, four days and seven days are sequentially increased, the odor degree in the environment is obviously increased, and the detection values are that the odor gas attached to the garbage buried under the covering soil is gradually diffused out and is diffused into the air again through the pore passages and the gaps on the covering soil layer in the background technology part; finally, the detection values of the nodes of fifteen days, twenty days and twenty-five days are reduced and tend to be stable, because when the original odor of the garbage layer is emitted, the garbage layer is buried underground, the thick soil covering on the garbage layer greatly blocks the contact between the garbage layer and the outside air, and the seepage liquid in the garbage is lost, so that the further deterioration and putrefaction speed of the household garbage is reduced, and the odor gas regenerated in the buried household garbage is effectively reduced.
Each time node of example 1 was inverted: similarly, at the node of 3 hours, the external odor is further dissipated, but the original malodor in the garbage layer is not emitted through the covering soil on the upper layer, so that the detection value is reduced compared with the prior detection value; however, the detection values of the three nodes of "one day", "four days" and "seven days" are not obviously increased and are far lower than that of comparative example 1, which is caused by the pushing effect of the dry ice gasification on the malodorous gas attached to the domestic garbage per se to the adsorption layer, thereby successfully avoiding the influence of the malodorous gas emitted to the external environment; finally, the detection values of three nodes of fifteen days, twenty days and twenty-five days are stable, the dry ice under the covering soil is consumed (the dry ice is consumed at the node of seven days), but the malodorous gas generated in the domestic garbage again is effectively reduced due to the covering of the soil and the loss of seepage liquid in the garbage.
Claims (5)
1. A landfill method beneficial to comprehensive treatment of household garbage is characterized in that: the landfill method is that the method comprises the following steps,
(1) paving an adsorption material or a mixture consisting of the adsorption material and landfill covering soil in the landfill pit to obtain an adsorption layer;
(2) paving the household garbage to be buried above the adsorption layer obtained in the step (1) to obtain a household garbage layer;
(3) and (3) paving a first covering soil layer above the domestic garbage layer obtained in the step (2), paving a layer of dry ice above the first covering soil layer, and immediately paving a second covering soil layer above the dry ice layer.
2. A landfill method advantageous to comprehensive disposal of domestic garbage according to claim 1, wherein: in the step (1), the mass and dosage ratio of the adsorbing material to the landfill casing soil is 100: 0 to 230.
3. A landfill method advantageous to comprehensive disposal of domestic garbage according to claim 1, wherein: in the step (1), the thickness of the laid adsorption layer is 35-50 cm.
4. A landfill method advantageous to comprehensive disposal of domestic garbage according to claim 1, wherein: in the step (2), the thickness of the laid household garbage layer is 100-200 cm.
5. A landfill method advantageous to comprehensive disposal of domestic garbage according to claim 1, wherein: in the step (3), the thickness of the laid first soil covering layer is 8-15 cm, and the laying amount of the dry ice is 50-200 g/m2And the thickness of the laid second soil covering layer is 60-100 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010184743.4A CN111360022A (en) | 2020-03-17 | 2020-03-17 | Landfill method beneficial to comprehensive treatment of household garbage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010184743.4A CN111360022A (en) | 2020-03-17 | 2020-03-17 | Landfill method beneficial to comprehensive treatment of household garbage |
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| Publication Number | Publication Date |
|---|---|
| CN111360022A true CN111360022A (en) | 2020-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010184743.4A Pending CN111360022A (en) | 2020-03-17 | 2020-03-17 | Landfill method beneficial to comprehensive treatment of household garbage |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001219134A (en) * | 2000-02-07 | 2001-08-14 | Ohbayashi Corp | METHOD FOR DISPOSING OF HIGH pH SUBSTANCE |
| CN101367088A (en) * | 2008-09-27 | 2009-02-18 | 袁永扬 | Garbage treatment method and comprehensive utilization |
| CN209225917U (en) * | 2018-12-05 | 2019-08-09 | 山东恒阳重工科技有限公司 | A kind of anti-peculiar smell self-discharging garbage vehicle of environmental protection |
-
2020
- 2020-03-17 CN CN202010184743.4A patent/CN111360022A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001219134A (en) * | 2000-02-07 | 2001-08-14 | Ohbayashi Corp | METHOD FOR DISPOSING OF HIGH pH SUBSTANCE |
| CN101367088A (en) * | 2008-09-27 | 2009-02-18 | 袁永扬 | Garbage treatment method and comprehensive utilization |
| CN209225917U (en) * | 2018-12-05 | 2019-08-09 | 山东恒阳重工科技有限公司 | A kind of anti-peculiar smell self-discharging garbage vehicle of environmental protection |
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Application publication date: 20200703 |