KR20000031010A - Method for retreatment of landfill - Google Patents
Method for retreatment of landfill Download PDFInfo
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- KR20000031010A KR20000031010A KR1019980046794A KR19980046794A KR20000031010A KR 20000031010 A KR20000031010 A KR 20000031010A KR 1019980046794 A KR1019980046794 A KR 1019980046794A KR 19980046794 A KR19980046794 A KR 19980046794A KR 20000031010 A KR20000031010 A KR 20000031010A
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- South Korea
- Prior art keywords
- landfill
- gas
- waste
- percent
- retreatment
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000011268 retreatment Methods 0.000 title abstract 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000002699 waste material Substances 0.000 claims abstract description 18
- 239000002689 soil Substances 0.000 claims description 9
- 239000012615 aggregate Substances 0.000 claims description 5
- 238000012958 reprocessing Methods 0.000 claims description 5
- 239000005416 organic matter Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 3
- 238000000855 fermentation Methods 0.000 claims 1
- 230000004151 fermentation Effects 0.000 claims 1
- 239000013049 sediment Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 6
- 239000000446 fuel Substances 0.000 abstract description 3
- 230000000087 stabilizing effect Effects 0.000 abstract description 2
- 239000004576 sand Substances 0.000 abstract 2
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 230000035943 smell Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 21
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 229910010272 inorganic material Inorganic materials 0.000 description 2
- 239000011147 inorganic material Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 230000001473 noxious effect Effects 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
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- 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
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- 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
- Y02W30/10—Waste collection, transportation, transfer or storage, e.g. segregated refuse collecting, electric or hybrid propulsion
-
- 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
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
Description
본 발명은 비위생 쓰레기 매립지(이하, "비위생매립지"로 약칭함)의 재처리 방법에 관한 것으로, 보다 상세하게로는 사용 중이거나 사용종료된 비위생매립지를 3 단계에 걸쳐 재처리하여 위생적으로 재처리하는 방법에 관한 것이다.The present invention relates to a reprocessing method of an unsanitary landfill (hereinafter, abbreviated as "unsanitary landfill"), and more specifically, to a sanitary reprocessing process by reprocessing an unsanitary landfill used or terminated in three stages. It is about how to.
비위생 매립지라 함은 위생매립지가 갖추어야 할 제반시설 즉, 침출수, 차수, 집수 및 처리시설, 매립지 가스 포집 및 처리시설 등과 같은 환경오염 방지시설을 제대로 갖추지 못한 상태에서 노천투기형으로 단순매립한 비위생적인 제반 매립지를 통칭하는 것이다.An unsanitary landfill is an unsanitary type of landfill that is simply unfilled with open-air dumping, without adequate facilities for environmental pollution, such as leachate, water, collection and treatment facilities, and landfill gas collection and treatment facilities. It is a general term for all landfills.
현재 국내의 비위생매립지는 환경오염 방지시설을 갖추지 못한 상태에서 무계획적으로 노천 투기함으로써 중금속과 난분해성 오염물질이 다량 함유된 침출수가 발생하고 침출수는 지하수와 지표수 등 주변 수계를 오염시키고 있다. 또한 매립 쓰레기 중의 유기물질이 분해되면서 발생되는 매립지가스는 메탄가스, 이산화탄소 및 기타 유해가스(황화수소 등)들로 구성되어 있어서 그대로 방치할 경우 대기오염과 악취확산은 물론, 주변식물의 성장에까지 악영향을 미치게 된다.Currently, unsanitary landfills in Korea do not have environmental pollution prevention facilities, and by unplanned open-air dumping, leachate containing heavy metals and hardly degradable pollutants is generated, and leachate pollutes the surrounding water system such as groundwater and surface water. In addition, landfill gas generated by the decomposition of organic substances in landfill waste is composed of methane gas, carbon dioxide and other harmful gases (hydrogen sulfide, etc.), and if left untreated, air pollution and odor spread, and adversely affect the growth of surrounding plants. Go crazy.
발생가스 중의 이산화탄소는 지구온난화를 유발하는 대표적인 물질이며, 메탄가스는 이산화탄소의 21배에 달하는 온실효과를 유발하는 가스이면서 폭발성까지 있어 비위생매립으로 인한 사고유발 가능성이 가장 높은 물질이다.Carbon dioxide in the generated gas is a representative material that causes global warming, and methane gas is a gas that causes 21 times the greenhouse effect of carbon dioxide and is explosive, and thus is the most likely to cause an accident due to unsanitary landfill.
국내의 대부분의 비위생매립지의 경우, 침출수는 그대로 누출되도록 방치하거나 일부 집수하더라도 탱크로리로 이송하여 하수처리장에 연계처리하는 것이 고작이며, 지하로 침출하거나 복류되는 침출수는 수집할 수가 없어 광역적인 수계오염의 원인이 되고 있다. 매립지가스는 별도의 조치없이 대기로 발산시키거나 일부 포집정을 설치한 곳에서도 단순 연소시키고 있어 실제로는 대기로 오염물질을 방출시키는 것과 다름없다.In most unsanitary landfills in Korea, even if the leachate is left to leak or is partially collected, the leachate is transported to the tank lorry and linked to the sewage treatment plant, and the leachate that leaches underground or flows back cannot be collected. It is the cause. Landfill gas is simply discharged to the atmosphere without any action or simply burned even in the presence of some collection wells, which is in fact equivalent to releasing pollutants into the atmosphere.
일부 비위생매립장은 기 매립된 쓰레기를 굴착하여 신규조성된 매립장으로 단순히 이적처리하고 있으며, 이는 신규매립장의 용량감소와 이적운반에 따른 경제적 손실은 물론 비산분진, 악취확산, 침출수 누출 등과 같은 환경에 미치는 악영향이 크다.Some non-sanitary landfills are simply digging up existing landfills and transferring them to newly constructed landfills, which are not only economically lost due to capacity reduction and transfer of new landfills, but also to the environment such as scattering dust, odor diffusion, and leachate leakage. Great adverse effect.
본 발명은 상기한 바와 같은 문제점을 해결하기 위한 것으로, 비위생매립지에서 발생되는 가스를 유용한 에너지원으로 사용할 수 있도록 회수함과 동시에, 매립된 쓰레기로 인하여 발생되는 토양, 대기, 수질 등 각종 환경오염을 미연에 방지하고, 건축물쓰레기 등과 같은 사용가능한 쓰레기는 별도로 가공하여 재활용되도록 하는 것을 목적으로 한다.The present invention is to solve the problems as described above, to recover the use of the gas generated in the unsanitary landfill as a useful energy source, and at the same time, the various environmental pollution such as soil, air, water quality caused by the landfill waste It aims to prevent it in advance, and to make available waste such as building garbage and recycle it separately.
본 발명의 다른 목적은 기매립된 비위생매립지를 위생적으로 복원하는 것이다. 본 발명의 또 다른 목적은 좁은 면적에서 많은 쓰레기를 처리할 수 있도록 하는 것이다.Another object of the present invention is to hygienically restore an embedded sanitary landfill. Another object of the present invention is to be able to handle a lot of waste in a small area.
본 발명은 다음의 3 단계로 구성된다.The present invention consists of the following three steps.
제 1단계는 매립된 쓰레기의 안정화단계로서, 매립지 가스를 메탄의 농도가 0.25∼1.00부피%가 되도록 유지하면서 인출함과 동시에, 매립지 내부에 외부공기를 주입시켜서 매립쓰레기 중의 유기물질을 속성 발효시켜 매립지를 조기에 안정화시키는 단계이다.The first step is the stabilization of the landfilled wastes, while the landfill gas is extracted while maintaining the concentration of methane at 0.25 to 1.00% by volume, and by introducing external air into the landfills, the organic matter in the landfills is rapidly fermented. This is a step of stabilizing the landfill early.
제 2단계는 선별단계로서, 안정화된 쓰레기를 굴착, 파쇄한 다음 골재 및 토사류와 협잡물로 선별하는 단계이다.The second step is a screening step, in which the stabilized waste is excavated and crushed, and then screened into aggregate, soil, and contaminants.
제 3단계는 최종 처리단계로서, 선별된 골재 및 토사류는 건설용 골재 또는 매립지의 복토재로 활용하고, 협잡물은 소각 또는 압축하여 재매립하는 단계이다.The third step is a final treatment step, wherein the selected aggregate and soil are used as construction aggregate or cover material of landfill, and the contaminants are incinerated or compressed and refilled.
이하, 본 발명을 상세히 설명한다.Hereinafter, the present invention will be described in detail.
제 1단계 중 메탄가스의 농도를 0.25∼1.00부피%, 바람직하게로는 0.25∼0.75부피% 정도가 되도록 유지하는 이유는 메탄가스의 폭발 위험성을 방지하기 위함이다. 외부공기를 내부로 주입시키는 이유는 내부의 호기성 미생물의 활동을 강화시켜 유기물질의 분해를 촉진시키기 위함이다. 인출 및 공급되는 가스의 양은 인출되는 가스 중의 메탄가스의 농도에 의하여 조절된다. 즉, 메탄가스의 농도가 상기 범위를 초과할 경우에는 인출되는 배기가스의 양을 줄이고 공급되는 외부공기의 양을 늘려서 메탄가스의 양이 적정한 상태로 유지되도록 한다.The reason for maintaining the methane gas concentration in the first step to 0.25 to 1.00% by volume, preferably 0.25 to 0.75% by volume is to prevent the risk of explosion of methane gas. The reason for injecting the outside air into the inside is to enhance the activity of the aerobic microorganisms inside to promote the decomposition of organic substances. The amount of gas withdrawn and supplied is controlled by the concentration of methane gas in the withdrawn gas. That is, when the concentration of methane gas exceeds the above range, the amount of exhaust gas drawn out is reduced and the amount of external air supplied is increased to maintain the amount of methane gas in an appropriate state.
적절한 안정화기간은 단위부피당 매립된 쓰레기의 무게가 30∼50%정도로 감량될 때까지로 하는 것이 바람직하며, 더욱 바람직하게로는 감량된 쓰레기 무게가 40% 내외가 될 때 까지이다. 또한 매립쓰레기 중의 유기물질의 양이 10중량% 이내가 되면 안정화가 완료된 것으로 볼 수 있다.Appropriate stabilization period is preferably until the weight of landfilled waste per unit volume is reduced to about 30 to 50%, more preferably until the weight of the waste is reduced to about 40%. In addition, it can be seen that the stabilization is completed when the amount of organic matter in the landfill waste is within 10% by weight.
인출된 배기가스는 분리되어 연료로 사용되거나, 약 1200℃로 연소가 가능한 산화분해장치를 거쳐 처리할 수 있으며, 이 경우는 유해가스, 악취유발물질, 기타 오염물질들이 완전히 처리된다.The withdrawn exhaust gases can be separated and used as fuel or processed through an oxidative decomposition apparatus capable of burning at about 1200 ° C, in which case noxious gases, odor-causing substances and other pollutants are completely treated.
제 1단계에서 침출수가 발생되는 경우에는 침출수 집수관을 설치하여 침출수를 처리하는 것이 바람직하다.When the leachate is generated in the first step, it is preferable to install the leachate collection pipe to treat the leachate.
제 2단계는 안정화된 쓰레기를 선별하는 단계로, 파쇄된 입자를 비중과 입자의 크기에 따라 분리할 수 있는 선별기의 사용이 바람직하며, 회전판형 선별기(Disc Seprator)를 사용하는 것이 가장 바람직하다. 회전판형 선별기는 팔각형의 판이 선별규격에 맞도록 배열된 상태에서 회전하는 데, 컨베이어와 직선으로 연결되어 선별기에 유입된 쓰레기 중 규격이 맞지 않거나 가벼운 것은 팔각회전판의 모서리가 회전하면서 쳐내도록 되어 있어 쓰레기를 흔드는 효과와 중간중간 간극사이로 쓰레기가 빠지는 체걸름 효과 및 판의 회전으로 막힘을 방지하면서 선별이 순식간에 일어나게 하는 효과 등을 발휘한다. 회전판형 선별기를 통하여 비중이 규격 이하인 유기물질이 별도로 걸러지게 되며, 비중이 규격에 맞는 무기물질은 입자 크기 별로 체거름된다.The second step is the step of sorting the stabilized waste, it is preferable to use a separator that can separate the crushed particles according to the specific gravity and the size of the particle, it is most preferable to use a disc separator (Disc Seprator). Rotating plate type sorter rotates with the octagonal plate arranged to meet the sorting standard.The garbage that is connected to the conveyor in a straight line and does not meet the standard or light that enters the sorting machine is struck by rotating the corner of the octagonal plate. It has the effect of shaking and the sifting effect of the waste falling out between the gaps between the middle and the screening to prevent clogging due to the rotation of the plate. Organic materials with specific gravity below the standard are filtered out through the rotary plate type sorter, and inorganic materials meeting the specific gravity with the standard are filtered by particle size.
제 3단계는 최종처리단계로서, 분리된 유기물질은 소각 또는 압축되어 재매립처리되며, 분리된 무기물질인 골재 또는 토사류는 일정지역에 적치된 후 복토재로 재활용되거나, 건설 또는 토목용 골재 또는 토양으로 재활용된다. 적치된 골재 또는 토사류는 혐기성 미생물의 활동에 의하여 잔존하는 소량의 유기물질이 대부분 분해된다.The third stage is the final treatment stage, and the separated organic material is incinerated or compressed to be reclaimed, and the separated inorganic material aggregate or soil is accumulated in a certain area and then recycled as cover soil, or aggregate or soil for construction or civil engineering. Is recycled. Accumulated aggregates or soils are mostly degraded by the activity of anaerobic microorganisms.
이와 같은 3 단계 공정을 거치게 되면, 매립쓰레기의 성상에 따라 차이가 있으나 일반적으로 부피기준으로 50∼80% 정도 감량이 가능하다. 또한 감량된 쓰레기 중 무기성분은 골재 등으로 재활용되어 짐은 전술한 바와 같다.If you go through such a three-step process, there is a difference depending on the characteristics of the landfill garbage, but in general, it is possible to reduce by 50 to 80% by volume. In addition, the inorganic components of the reduced waste are recycled to aggregates, etc., as described above.
이상에서 상술한 바와 같이, 본 발명을 적용하면 사용종료된 매립지는 연장사용이 가능하며, 사용 중인 매립지는 잔존수명을 2∼10배 정도 연장할 수 있다. 또한 포집된 메탄가스, 선별처리된 골재 등은 에너지원이나 재료로 재활용될 수 있다.As described above, when the present invention is applied, the landfill used after the use can be extended, and the landfill being used can extend the remaining life by 2 to 10 times. In addition, the collected methane gas, sorted aggregate, etc. can be recycled as an energy source or material.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019980046794A KR100301280B1 (en) | 1998-11-02 | 1998-11-02 | Reprocessing of Unsanitary Garbage in Landfills |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019980046794A KR100301280B1 (en) | 1998-11-02 | 1998-11-02 | Reprocessing of Unsanitary Garbage in Landfills |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20000031010A true KR20000031010A (en) | 2000-06-05 |
| KR100301280B1 KR100301280B1 (en) | 2001-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019980046794A KR100301280B1 (en) | 1998-11-02 | 1998-11-02 | Reprocessing of Unsanitary Garbage in Landfills |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR100301280B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010100077A (en) * | 2001-09-10 | 2001-11-14 | 김학로 | Stabilization, excavation and screening methods for the maintenance and restoration of unsanitary landfills |
| CN107116083A (en) * | 2017-06-19 | 2017-09-01 | 中节能大地环境修复有限公司 | A kind of landfill waste and the method for crude waste integrated treatment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5564862A (en) * | 1994-05-04 | 1996-10-15 | Markels, Jr.; Michael | Method of improved landfill mining |
-
1998
- 1998-11-02 KR KR1019980046794A patent/KR100301280B1/en not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010100077A (en) * | 2001-09-10 | 2001-11-14 | 김학로 | Stabilization, excavation and screening methods for the maintenance and restoration of unsanitary landfills |
| CN107116083A (en) * | 2017-06-19 | 2017-09-01 | 中节能大地环境修复有限公司 | A kind of landfill waste and the method for crude waste integrated treatment |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100301280B1 (en) | 2001-10-29 |
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