KR100585890B1 - Final cover layer structure of landfill using industrial by-products, reinforcements and hardeners - Google Patents
Final cover layer structure of landfill using industrial by-products, reinforcements and hardeners Download PDFInfo
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- KR100585890B1 KR100585890B1 KR1020030040629A KR20030040629A KR100585890B1 KR 100585890 B1 KR100585890 B1 KR 100585890B1 KR 1020030040629 A KR1020030040629 A KR 1020030040629A KR 20030040629 A KR20030040629 A KR 20030040629A KR 100585890 B1 KR100585890 B1 KR 100585890B1
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- 230000002787 reinforcement Effects 0.000 title claims abstract description 19
- 239000006227 byproduct Substances 0.000 title claims abstract description 17
- 239000004848 polyfunctional curative Substances 0.000 title claims description 11
- 239000010920 waste tyre Substances 0.000 claims abstract description 26
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 20
- 239000010802 sludge Substances 0.000 claims abstract description 19
- 239000002689 soil Substances 0.000 claims abstract description 19
- 239000002699 waste material Substances 0.000 claims abstract description 16
- 230000004888 barrier function Effects 0.000 claims abstract description 15
- 239000000835 fiber Substances 0.000 claims description 14
- 230000035699 permeability Effects 0.000 claims description 13
- 239000004927 clay Substances 0.000 claims description 12
- 239000012779 reinforcing material Substances 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 6
- 239000012634 fragment Substances 0.000 claims description 3
- -1 reinforcements Substances 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 3
- 239000000463 material Substances 0.000 abstract description 15
- 238000004064 recycling Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 13
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 6
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 4
- 235000019645 odor Nutrition 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- 239000002734 clay mineral Substances 0.000 description 3
- 239000000356 contaminant Substances 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 2
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000001110 calcium chloride Substances 0.000 description 2
- 229910001628 calcium chloride Inorganic materials 0.000 description 2
- 230000007717 exclusion Effects 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000001103 potassium chloride Substances 0.000 description 2
- 235000011164 potassium chloride Nutrition 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 241000700159 Rattus Species 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000004332 deodorization Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000004746 geotextile Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000010903 husk Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 229920005594 polymer fiber Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
- B09B1/004—Covering of dumping sites
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
Abstract
본 발명은 산업부산물, 보강재 및 고화제를 적용한 폐기물매립장 최종복토층 구조에 관한 것으로, 그 목적은 폐기물매립장의 최종복토층을 조성함에 있어 산업부산물을 재활용하여 최종복토층에 사용되는 재료난을 해결하고, 보강재 및 고화제를 사용하여 폐기물의 부패에 의한 최종복토층의 침하 및 변형을 억제시키는 최종복토층구조를 제공하는데 있다.The present invention relates to the structure of the final cover layer of the landfill site to which industrial by-products, reinforcements and solidifying agents are applied. The purpose of the present invention is to solve the material shortage used in the final cover layer by recycling the industrial by-products in forming the final cover layer of the landfill site. And it provides a final cover layer structure that suppresses the settlement and deformation of the final cover layer by the decay of the waste by using a solidifying agent.
본 발명의 구성은 가스배제층, 차단층, 배수층, 식생대층으로 적층구성되는 폐기물매립장 최종복토층 구조에 있어서, 가스배제층으로 왕겨 및 폐타이어조각을 사용하고, 차단층으로 보강형 고화토를 사용하며, 배수층으로 골재 및 폐타이어조각을 사용하고, 식생대층으로 슬러지 고화식생토를 사용하는 층으로 구성한 것을 그 기술적 특징으로 한다.According to the present invention, in the final landfill layer structure of a landfill site composed of a gas exhaust layer, a barrier layer, a drainage layer, and a vegetation large layer, a chaff and waste tire pieces are used as the gas exhaust layer, and a reinforcement type solidified soil is used as the barrier layer. It is characterized by consisting of a layer using aggregate and waste tire pieces as drainage layer, and using sludge solidified soil as vegetation large layer.
폐기물 매립시설, 복토, 일일복토, 중간복토, 최종복토 Waste landfill facility, cover, daily cover, intermediate cover, final cover
Description
도 1은 본 발명의 대표도인 산업부산물, 보강재 및 고화제를 적용한 폐기물매립장 최종복토층구조을 나타낸 도면이다.1 is a view showing a final landfill layer structure of a landfill using industrial by-products, reinforcements and hardeners, which are representative views of the present invention.
<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>
(1) : 폐기물 (1): waste
(2) : 가스배제층 : 왕겨, 폐타이어조각(2) Gas Exhaust Layer: rice husk, scrap of scrap tire
(3) : 차단층 : 일반토, 점토, 슬러지 + 고화제 + 보강재(3): barrier layer: plain soil, clay, sludge + hardener + reinforcement
(4) : 배수층 : 골재, 폐타이어 조각(4) drainage layer: aggregate, waste tire fragment
(5) : 식생대층 : 슬러지 고화식생토(5): Vegetation large layer: Sludge solidified soil
본 발명은 폐기물 매립장에 관한 것으로, 자세하게는 산업부산물, 보강재 및 고화제를 적용한 폐기물매립장 최종복토층구조에 관한 것이다. The present invention relates to a waste landfill site, and more particularly, to a landfill final cover layer structure applying industrial by-products, reinforcements and hardeners.
폐기물 매립시설의 복토로는 일일복토, 중간복토 및 최종복토가 있다. 복토는 쥐, 파리 등의 서식 방지, 쓰레기 냄새 제거, 종이, 재 등의 비산 방지, 미관 증진, 가스발생에 따른 화재 예방, 지표수와 지하수의 오염 포텐셜 저감, 폐기물과 주변의 격리 등이 있다. Coverage of waste landfill facilities includes daily cover, intermediate cover and final cover. Coverage includes prevention of habitats such as rats and flies, deodorization of garbage, prevention of scattering of paper and ash, improvement of aesthetics, prevention of fire caused by gas generation, reduction of potential for contamination of surface water and groundwater, and segregation of waste and surroundings.
상기 일일복토는 매립이 진행됨에 따라 작업중인 셀(cell) 중에서도 최소한의 면적만이 노출되게, 가능하다면 자주 하는 것이 좋으나 보통은 하루의 작업이 끝날 때 행해지게 된다. The daily covering is preferably done as often as possible, so that only the minimum area of the working cell is exposed as landfill progresses, but is usually done at the end of the day's work.
상기 중간복토는 폐기물 매립이 7일간 정지되는 경우에 행해진다. The intermediate cover is carried out when the waste landfill is stopped for 7 days.
상기 최종복토는 폐기물 매립이 완전히 끝난 후 그 최상층에 복토를 하고 다짐을 하는 것으로 경관의 미적 향상, 매립 마감 후 토지 이용, 침출수량의 감소 등의 목적으로 행해진다.The final cover is to cover and compact on the top floor after the completion of the landfill is completed for the purpose of improving the aesthetics of the landscape, land use after the completion of the landfill, reduction of leachate.
국내의 폐기물관리법에 의하면 매립시설의 사용이 종료된 때에는 최종복토층을 기울기가 2퍼센트 이상이 되도록 설치하여야 한다. According to the national waste management law, when the landfill facility is finished, the final cover layer should be installed so that the slope is more than 2 percent.
이 경우 최종복토층은 하부로부터 다음과 같은 가스배제층 · 차단층 · 배수층 및 식생대층을 차례대로 설치하여야 한다. In this case, the final cover layer should be provided with the following gas exclusion layer, barrier layer, drainage layer, and vegetation large layer in order from the bottom.
상기 가스배제층은 두께 30센티미터 이상 설치하고, 상기 차단층은 점토 · 점토광물혼합토 등으로 두께 45센티미터 이상으로 투수계수가 1초당 1백만분의 1센티미터 이하가 되도록 설치하거나 점토 · 점토광물혼합토 등으로 두께 30센티미터 이상 투수계수가 1초당 1백만분의 1센티미터 이하가 되도록 설치한 후 그 위에 두께 1.5밀리미터 이상인 합성고분자 차수막을 설치하며, 상기 배수층은 투수계수가 10-2cm/sec 이상인 모래 및 자갈을 30센티미터 이상 두께로 포설하거나 복토층 하중 상태에서 투과능계수가 1초당 3만분의 1제곱미터 이상인 지오컴포지트 · 지오네트 또는 지오텍스타일 등의 토목합성수지를 설치하고, 상기 식생대층은 두께 60센티 이상 설치하도록 하고 있다. The gas exhaust layer is installed at least 30 centimeters thick, and the barrier layer is at least 45 centimeters thick with clay and clay mineral mixed soils, so that the permeability coefficient is less than 1 million centimeters per second, or clay and clay mineral mixed soils. 30 cm thick or more permeability coefficient of less than 1 million / 1 centimeter per second and then installed a synthetic polymer order film of more than 1.5 millimeters thick, the drainage layer is sand and a permeability coefficient of 10 -2 cm / sec or more Install gravel with a thickness of 30 centimeters or more, or install a geosynthetic resin such as geocomposite, geonet, or geotextile with a permeability coefficient of at least 30,000 square meters per second under the condition of covering the soil layer. I'm trying to.
하지만 상기 최종복토층의 가스배제층 · 차단층 · 배수층 및 식생대층에 사용되는 점토, 점토광물 혼합토, 모래, 자갈 등은 자연재료 및 골재난에 의하여 매립지 주변에서 구하기가 매우 어려운 실정이다. However, the clay, clay mineral mixture soil, sand, gravel, etc. used in the gas removal layer, the barrier layer, the drainage layer, and the vegetation large layer of the final cover layer are difficult to obtain around the landfill due to natural materials and aggregates.
그리고 설령 매립장 인근에 채취장소가 있다 하더라도 굴착, 파쇄, 운반 등의 비용 및 민원 문제와 자연환경 파괴라는 문제점에 봉착하고 있다. Even if there is a collection site near the landfill, they face problems such as cost, civil complaints, and destruction of the natural environment.
더구나 폐기물 매립장은 부패성 물질인 폐기물이 매립되어 있기 때문에 시간이 경과함에 따라 지속적으로 침하하는 경향을 보이기 때문에 매립장 상부에 설치 된 최종복토층이 침하를 일으키게 되어, 설치된 최종복토층이 변형을 일으켜 최종복토층이 굴곡, 역구배, 파손, 균열 등의 문제점이 발생하게 된다. Moreover, since the waste landfill has a tendency to settle continuously over time because the waste, which is a perishable material, is buried, the final cover layer installed on the top of the landfill causes settlement, and the final cover layer is deformed and the final cover layer is bent. Problems such as reverse gradient, breakage, and cracking occur.
따라서 많은 비용과 노력을 들여 조성된 최종복토층이 제 기능을 발휘하지 못하고 상당한 유지보수 및 관리를 필요로 하게 된다. Therefore, the final cover layer, which was created with a great deal of cost and effort, does not function properly and requires considerable maintenance and management.
이와 같은 이유로 폐기물매립장의 최종복토층의 가스배제층 · 차단층 · 배수층 및 식생대층으로 사용되고 있는 재료의 대체재료 개발이 필요하고, 폐기물의 침하에 대한 저항성이 큰 침하대응형 복토시스템의 개발이 절실한 실정이다. For this reason, it is necessary to develop alternative materials for the materials used for the gas removal layer, barrier layer, drainage layer, and vegetation large layer in the final cover layer of the landfill, and the development of a settlement-type cover system with high resistance to settlement of the waste is urgently needed. to be.
상기와 같은 문제점을 해결하기 위한 본 발명의 목적은 폐기물매립장의 최종복토층을 조성함에 있어 산업부산물을 재활용하여 최종복토층에 사용되는 재료난을 해결하고, 보강재 및 고화제를 사용하여 폐기물의 부패에 의한 최종복토층의 침하 및 변형을 억제시키는 최종복토층구조를 제공하는데 있다.
An object of the present invention for solving the above problems is to solve the material shortage used in the final cover layer by recycling industrial by-products in forming the final cover layer of the landfill, and by using the reinforcement and the hardening agent The present invention provides a final cover layer structure that suppresses settlement and deformation of the final cover layer.
상기와 같은 본 발명의 목적은 폐타이어조각, 슬러지, 왕겨 등의 산업폐기물을 재활용하여 최종복토재의 대체재료로 개발하고, 폐타이어조각, 왕겨 등의 산업폐기물을 재활용하여 가스 및 악취를 제거하며, 고분자섬유 보강재, 무기성 고화제를 이용하여 최종복토층의 강성 및 인성을 증진시켜 침하에 대한 저항성이 큰 최종복토층구조를 제공함으로써 달성된다.
The object of the present invention as described above is to develop industrial waste materials such as waste tire scrap, sludge, chaff, etc. as a substitute material for the final cover material, and to remove gas and odor by recycling industrial waste such as waste tire scrap and chaff, It is achieved by using a polymer fiber reinforcement and an inorganic hardener to enhance the rigidity and toughness of the final cover layer to provide a final cover layer structure that is highly resistant to settlement.
상기한 바와 같은 목적을 달성하고 종래의 결점을 제거하기 위한 과제를 수행하는 본 발명의 실시예인 구성과 그 작용을 첨부도면에 연계시켜 상세히 설명하면 다음과 같다.When described in detail with reference to the accompanying drawings, the configuration and the operation of the embodiment of the present invention to achieve the object as described above and to perform the task for eliminating the conventional drawbacks.
도 1은 본 발명의 대표도인 산업부산물, 보강재 및 고화제를 적용한 폐기물매립장 최종복토층구조를 나타낸 것으로, 폐기물층 상부에 최종복토층으로 가스배제층 · 차단층 · 배수층 및 식생대층을 순차적으로 조성하되, 가스배제층은 왕겨, 폐타이어조각을 사용하고, 차단층은 일반토, 점토, 슬러지에 고화제 및 보강재를 혼합하여 사용하며, 배수층은 골재, 폐타이어조각을 사용하고, 식생대층은 슬러지 고화식생토를 사용한 층구조를 도시하고 있다.Figure 1 shows the final cover layer structure of the landfill site applying industrial by-products, reinforcement and solidification of the representative view of the present invention, the gas exclusion layer, blocking layer, drainage layer and vegetation large layer in order to the final cover layer on top of the waste layer , Gas exhaust layer uses chaff and waste tire pieces, Blocking layer is used by mixing solidifying agent and reinforcement with general soil, clay, sludge, drainage layer using aggregate and waste tire piece, and vegetation large layer solidifying sludge The layer structure using vegetation soil is shown.
구체적인 최종복토층의 구성요소별 사용재료 및 설치제원은 다음과 같다. Specific materials and installation specifications for each component of the final cover layer are as follows.
가스배제층은 왕겨와 폐타이어조각을 부피비로 20∼80 : 80∼20으로 혼합하여 조성하고, 두께 30cm 및 투수계수 1×10-2cm/sec 이상으로 하며, 사용되는 폐타이어조각은 길이 30∼100mm로 한다. The gas exhaust layer is formed by mixing chaff and waste tire pieces in a volume ratio of 20 to 80:80 to 20, and having a thickness of 30 cm and a permeability coefficient of 1 × 10 -2 cm / sec or more, and used waste tire pieces of length 30 It is set to -100 mm.
상기 왕겨와 폐타이어를 사용한 이유는 왕겨와 폐타이어는 기공이 많고 비표면적이 크기 때문에 오염물질 및 악취에 대한 흡착성 및 저감성이 매우 좋고 폐기 물이기 때문에 가격이 매우 저렴하고 산업부산물의 재활용이라는 의미가 크기 때문이다The use of chaff and waste tires is because chaff and waste tires have a lot of pores and a large specific surface area, so they are very adsorbable and resistant to contaminants and odors, and because they are waste products, they are very inexpensive and recycle by industrial by-products. Because it is large
상기 부피비를 20∼80 : 80∼20으로 한정한 이유는 실험결과에서 왕겨나 폐타이어가 부피비로 최소 20% 정도 혼합되어야만 왕겨와 폐타이어의 상호보완작용에 의하여 오염물질 및 악취의 흡착성 및 저감성이 크기 때문이다. The reason for limiting the volume ratio to 20 to 80:80 to 20 is that in the experimental results, at least 20% of the chaff or waste tire should be mixed in the volume ratio so that the adsorption and reduction of contaminants and odors by the complementary action of the chaff and the waste tire. Because of this size.
상기 폐타이어 조각의 크기를 30∼100mm로 한정한 이유는 실험결과에 의하면 폐타이어 조각의 크기가 30∼100mm일때 흡착성이 좋은 것으로 나타났고 특히, 폐타이어 조각의 크기가 50mm일때 가장 흡착성이 좋은 것으로 나타났다. 따라서 흡착성을 고려한다면 가능하면 폐타이어 조각의 크기를 50mm로 사용하는 것이 바람직하다. The reason for limiting the size of the waste tire pieces to 30-100 mm is that the adsorption is good when the size of the waste tire pieces is 30-100 mm. appear. Therefore, if the adsorption is considered, it is preferable to use the size of the waste tire piece as 50 mm if possible.
차단층은 일반토, 점토, 슬러지 중에서 선택된 어느 하나를 기준으로 하여 고화제 및 섬유보강재와 혼합하되, 혼합비율은 중량비로 고화제 1.0∼1.2wt%, 섬유보강재 0.2∼0.4wt%, 나머지는 일반토, 점토, 슬러지 중에서 선택된 어느 하나로 혼합 조성하고, 두께 45cm 및 투수계수 1×10-6cm/sec 이하로 한다. The barrier layer is mixed with the solidifying agent and the fiber reinforcement based on any one selected from ordinary soil, clay, and sludge, but the mixing ratio is 1.0 to 1.2 wt% of the hardening agent, 0.2 to 0.4 wt% of the fiber reinforcing material, and the rest is general The composition is mixed with one selected from soil, clay and sludge, and the thickness is 45 cm and the permeability coefficient is 1 × 10 -6 cm / sec or less.
이와 같은 구성의 수치한정 이유는 다음과 같다.The reason for the numerical limitation of such a configuration is as follows.
상기 일반토, 점토, 슬러지는 현장에서 쉽게 입수가 가능하거나 존재하는 것을 사용하는 것으로 일반토, 점토, 슬러지는 서로 혼합하여 사용하는 것이 아니고 각각 독립적으로 차단층의 모재(母材)로 사용한다. 따라서 일반토, 점토, 슬러지의 별개의 모재에 고화제, 섬유보강재를 혼합하여 차단층을 조성한다. The general soil, clay, and sludge are those that are readily available or present in the field, and the general soil, clay, and sludge are not used by mixing with each other, but each independently used as a base material of the barrier layer. Therefore, the barrier layer is formed by mixing the solidifying agent and the fiber reinforcement in separate base materials of ordinary soil, clay and sludge.
상기 고화제로는 염화나트륨 20∼25wt%와 염화칼륨 25∼30wt%와 염화칼슘 15∼20wt%와 염화알루미늄 5∼8wt%와 염화제2철 2∼3wt%와 구연산 2∼3wt%의 혼합물을 사용한다. 여기에서 고화제의 구성요소별 혼합비율을 제시한 것은 제시된 혼합비율의 범위로 혼합한 경우에 가장 경제적이고 효과적인 고화제를 얻을 수 있기 때문이다. As a solidifying agent, a mixture of 20-25 wt% sodium chloride, 25-30 wt% potassium chloride, 15-20 wt% calcium chloride, 5-8 wt% aluminum chloride, 2-3 wt% ferric chloride, and 2-3 wt% citric acid is used. The mixing ratio of each component of the solidifying agent is presented here because the most economical and effective solidifying agent can be obtained when mixed in the range of the mixing ratio.
상기 섬유보강재로는 섬유화이버(textile fiber)의 하나이고 보강성이 좋은 폴리에틸렌화이버를 사용하되, 폴리에틸렌화이버는 길이 30∼60 mm, 직경 0.2∼0.5 mm, 밀도 500∼3000 deniers를 사용한다. The fiber reinforcing material is one of the fiber fibers (textile fiber) and use a good reinforcement polyethylene fiber, polyethylene fiber 30 to 60 mm in length, 0.2 to 0.5 mm in diameter, 500 to 3000 deniers are used.
상기 고화제 1.0∼1.2wt%와 섬유보강재 0.2∼0.4wt%로 혼합시 그 수치를 한정한 이유는 다음과 같다. 고화제는 1.0wt% 이하인 경우 보강재로서의 고화력의 발휘가 미약하고 1.2wt% 이상인 경우에는 보강재로서의 고화력이 충분하기 때문에 그 이상 넣을 필요가 없다. 섬유보강재는 0.2wt% 이하인 경우 섬유재의 보강력이 떨어지고 0.4wt% 이상인 경우에는 보강력이 크게 증가하지 않으며 보강재의 과다 투입에 의해 경제적이지 않기 때문이다. The reason for limiting the numerical value when mixing to 1.0 to 1.2 wt% of the hardener and 0.2 to 0.4 wt% of the fiber reinforcement is as follows. If the solidifying agent is 1.0 wt% or less, the high solidification power as a reinforcing material is weakly exhibited, and if it is 1.2 wt% or more, the solidifying power as the reinforcing material is sufficient. This is because the fiber reinforcing material is less than 0.2wt%, the reinforcing power of the fiber material is lowered, and when the fiber reinforcing material is more than 0.4wt%, the reinforcing power is not greatly increased and it is not economical due to the excessive input of the reinforcing material.
배수층은 골재와 폐타이어조각을 부피비로 40∼80 : 60∼20으로 혼합하여 조성하고, 두께 30cm, 투수계수 1×10-2cm/sec 이상으로 한다. The drainage layer is formed by mixing aggregate and waste tire in a volume ratio of 40 to 80:60 to 20, and having a thickness of 30 cm and a permeability coefficient of 1 × 10 −2 cm / sec or more.
이와 같은 구성의 수치한정 이유는 다음과 같다.The reason for the numerical limitation of such a configuration is as follows.
상기 부피비를 40∼80 : 60∼20으로 한정한 이유는 골재의 혼합비율이 부피비로 최소 40% 정도가 되어야 배수층으로의 투수성이 양호한 것으로 나타났고, 골재의 혼합비율이 부피비로 최대 80%가 넘게 되면 폐타이어와의 대체율이 크지 않기 때문이다. 반대로 폐타이어의 혼합비율은 부피비로 최소 20%가 되어야만 골재의 대체로서의 명분이 있으며, 폐타이어의 혼합비율이 부피비로 60%를 넘게 되면 배수층의 투수성이 불량하기 때문이다. The reason for limiting the volume ratio to 40 to 80: 60 to 20 is that the mixing ratio of the aggregate is at least 40% as the volume ratio, and the water permeability to the drainage layer is good, and the mixing ratio of the aggregate is 80% as the volume ratio. If it exceeds, the replacement rate with waste tire is not large. On the contrary, the mixing ratio of the waste tires must be at least 20% by volume ratio to replace aggregate, and when the mixing ratio of waste tires exceeds 60% by volume ratio, the permeability of the drainage layer is poor.
식생대층은 슬러지에 중량비로 고화제를 0.8∼1.0wt% 혼합하여 조성하고, 두께 60cm 및 투수계수 1×10-5cm/sec 정도로 한다. The vegetation large layer is formed by mixing 0.8 to 1.0 wt% of a solidifying agent in sludge by weight ratio, and has a thickness of 60 cm and a permeability coefficient of about 1 × 10 −5 cm / sec.
이와 같은 구성의 수치한정 이유는 다음과 같다.The reason for the numerical limitation of such a configuration is as follows.
상기 고화제로는 염화나트륨 20∼25wt%와 염화칼륨 25∼30wt%와 염화칼슘 15∼20wt%와 염화알루미늄 5∼8wt%와 염화제2철 2∼3wt%와 구연산 2∼3wt%의 혼합물을 사용한다. 여기에서 고화제의 구성요소별 혼합비율을 제시한 것은 제시된 혼합비율의 범위로 혼합한 경우에 가장 경제적이고 효과적인 고화제를 얻을 수 있기 때문이다. As a solidifying agent, a mixture of 20-25 wt% sodium chloride, 25-30 wt% potassium chloride, 15-20 wt% calcium chloride, 5-8 wt% aluminum chloride, 2-3 wt% ferric chloride, and 2-3 wt% citric acid is used. The mixing ratio of each component of the solidifying agent is presented here because the most economical and effective solidifying agent can be obtained when mixed in the range of the mixing ratio.
상기 슬러지에 고화제 0.8∼1.0wt%을 혼합 조성하도록 그 수치를 한정한 이유는 슬러지를 식생대층으로 사용시에 식생대층이 가져야하는 침하저항성 및 강성을 고려하여 슬러지에 고화제를 0.8wt% 이하로 혼합하는 경우에는 이의 특성이 약간 작게 되고, 슬러지에 고화제를 1.0wt% 이상으로 혼합하는 경우에는 이의 특성이 너무 크게 되기 때문이다. The reason for limiting the numerical value to mix 0.8 ~ 1.0wt% of solidifying agent in the sludge is that the sludge has a solidifying agent of 0.8wt% or less in consideration of the sedimentation resistance and rigidity that the vegetation large layer should have when the sludge is used as a vegetation large layer. This is because, in the case of mixing, its properties become slightly smaller, and in the case of mixing the solidifying agent in the sludge at 1.0 wt% or more, its properties are too large.
본 발명은 상술한 특정의 바람직한 실시예에 한정되지 아니하며, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형실시가 가능한 것은 물론이고, 그와 같은 변경은 청구범위 기재의 범위 내에 있게 된다. The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.
상기와 같이 이루어지는 본 발명은 산업부산물, 고화제 및 보강재를 이용하여 폐기물매립장 최종복토층구조를 조성하는 것으로 다음과 같은 효과를 얻을 수 있다.The present invention made as described above by using the industrial by-products, hardeners and reinforcing materials to form the landfill final cover layer structure can be obtained the following effects.
첫째, 최종 복토층의 가스배제층 · 차단층 · 배수층 및 식생대층에 사용되는 재료를 자연재료에서 산업부산물로 대체함으로서 친환경적이고 경제적인 재료를 얻고 국가의 산업부산물 재활용분야에 일익을 담당한다는 장점과, First, by replacing the materials used in the gas cover layer, barrier layer, drainage layer, and vegetation layer of the final cover layer with natural by-products, it obtains eco-friendly and economical materials and plays a part in the country's industrial by-product recycling field.
둘째, 매립된 폐기물의 부패에 의한 지속적인 침하에 저항할 수 있는 최종복토층구조를 조성함으로서 침하에 대하여 안정적인 최종복토층구조를 구축할 수 있고 장기적으로 유지관리비용 및 보수비용을 절감할 수 있다는 장점과, Second, by creating a final cover layer structure that can resist continuous settlement due to corruption of landfilled waste, it is possible to establish a stable cover layer structure for settlement and to reduce maintenance and repair costs in the long term.
셋째, 산업부산물인 폐타이어조각, 왕겨 등의 오염물질 흡착성이 뛰어나기 때문에 매립된 폐기물에서 발생하는 가스 및 악취 등의 제거 및 희석이 가능하다는 장점이 있다.
Third, because of the excellent adsorption of contaminants such as waste tire scrap, chaff, etc., which is an industrial by-product, it is possible to remove and dilute gases and odors generated from landfilled waste.
이상과 같이 본 발명은 최종복토층의 가스배제층 · 차단층 · 배수층 및 식생대층에 사용되는 재료로 산업부산물, 고화제 보강재를 혼합하여 사용함으로 고기능의 다대응형이고 친환경적이며 경제적인 최족복토층 조성을 가능하게 해준다는 장점을 가진 유용한 발명으로 산업상 그 이용이 크게 기대되는 발명인 것이다.
As described above, the present invention uses a mixture of industrial by-products and a hardener reinforcement as a material used in the gas exhaust layer, the barrier layer, the drainage layer, and the vegetation large layer of the final cover layer, thereby enabling the formation of a high-performance, multi-adaptive, environmentally friendly, and economical cover layer. It is a useful invention with the advantage of making it an invention that is expected to be greatly used in industry.
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