JP3171461B2 - Waterproof sheet for landfilling waste and method for landfilling waste using the same - Google Patents
Waterproof sheet for landfilling waste and method for landfilling waste using the sameInfo
- Publication number
- JP3171461B2 JP3171461B2 JP21636291A JP21636291A JP3171461B2 JP 3171461 B2 JP3171461 B2 JP 3171461B2 JP 21636291 A JP21636291 A JP 21636291A JP 21636291 A JP21636291 A JP 21636291A JP 3171461 B2 JP3171461 B2 JP 3171461B2
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- waste
- porous film
- waterproof
- water
- 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.)
- Expired - Lifetime
Links
Classifications
-
- 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
- Processing Of Solid Wastes (AREA)
- Laminated Bodies (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、廃棄物の埋立て処理用
遮水シート及びそれを用いた廃棄物の埋立て処理方法に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seepage control sheet for landfilling waste and a method for landfilling waste using the same.
【０００２】[0002]
【従来技術及びその問題点】廃棄物の埋立処理方法とし
ては、廃棄物層の厚さ約３ｍ毎に５０ｃｍ層の覆土によ
り盛土を行うサンドイッチ工法が採用されている。しか
し、このような従来の方法では、廃棄物層に直接覆土に
より盛土を行うため、降雨による雨水が廃棄物層に浸透
し、嫌気性分解によるガス発生を促し、廃棄物から有害
成分が雨水に溶け出してしまう。その結果、廃棄物埋立
中及び埋立後に、発火及び悪臭の発生や土壌、地下水汚
染、水質汚濁といった環境問題を生じ、埋立が完了して
も廃計物処理場の跡地利用が数年〜数十分にわたってで
きないという問題がある。2. Description of the Related Art As a method of landfilling waste, a sandwich method is employed in which embankment is carried out by covering a 50 cm layer with a waste layer having a thickness of about 3 m. However, in such a conventional method, since the embankment is directly covered with the waste layer by embankment, rainwater from rainfall penetrates into the waste layer and promotes gas generation by anaerobic decomposition, and harmful components from waste are converted into rainwater. Will melt away. As a result, during and after the landfill, environmental problems such as ignition and odor, soil, groundwater contamination, and water pollution occur. There is a problem that can not be over a minute.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、従来技術に
見られる前記問題を解決し、埋立処理後に環境問題の発
生のない廃棄物の埋立処理方法及びそれに用いる遮水シ
ートを提供することをその課題とする。SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems in the prior art, and provides a landfill method for waste which does not cause an environmental problem after the landfill, and a waterproof sheet used therefor. The subject.
【０００４】[0004]
【課題を解決するための手段】本発明者らは、前記課題
を解決すべく鋭意研究を重ねた結果、本発明を完成する
に至った。即ち、本発明によれば、厚さ１０〜８０μｍ
の多孔質フィルムを少なくとも一部に有し、該多孔質フ
ィルムの少なくとも一方の面に通気性補強シートを接着
面積が５〜９５％の割合になるように部分接着させた防
水通気性シートからなる廃棄物の埋立て処理用遮水シー
トが提供される。また、本発明によれば、廃棄物を所定
量廃棄する毎に盛土を行うに際し、前記遮水シートを廃
棄物上に敷設した後盛土を行うことを特徴とする廃棄物
の埋立て処理方法が提供される。Means for Solving the Problems The present inventors have conducted intensive studies to solve the above-mentioned problems, and as a result, have completed the present invention. That is, according to the present invention, a thickness of 10 to 80 μm
Porous film possess at least in part, porous foldback
Adhesion of breathable reinforcing sheet to at least one side of film
There is provided a water-blocking sheet for landfilling waste, comprising a water-permeable and air-permeable sheet partially adhered so as to have an area of 5 to 95% . Further, according to the present invention, there is provided a waste landfill treatment method characterized by performing embankment after laying the impermeable sheet on the waste when embankment is performed each time a predetermined amount of waste is discarded. Provided.
【０００５】本発明の廃棄物処理に用いる遮水シートと
しては、多孔質フィルムを少なくとも一部に有する防水
通気性シートが用いられる。多孔質フィルムとしては、
ポリオレフィン系、ポリウレタン系、ポリエステル系、
ポリエーテル系、ポリ塩化ビニル系、セルロース系等の
従来公知の多孔質高分子フィルムを任意に使用できる
が、好ましくは延伸多孔質ポリテトラフルオロエチレン
（特公昭５６−４５７７３号、特公昭５６−１７２１６
号）を用いるのがよい。この多孔質フィルムにおける平
均細孔直径は、５μｍ以下、好ましくは１μｍ以下であ
り、防水性と通気性を兼備したものであればよい。多孔
質フィルムの厚さは、通常、１０〜１００μｍ、好まし
くは３０〜８０μｍである。本発明では、この多孔質フ
ィルムは、その片面又は両面に通気性補強シートを積層
接着して好ましく用いられる。この場合、通気性補強シ
ートとしては、通気性がよく、強度の高いシートであれ
ばどのようなものでも使用可能であり、不織布、織布、
ネット、防水紙等が用いられる。多孔質フィルムに補強
シートを積層接着させる場合、その接着は部分接着法に
より行うのが好ましい。全面接着法により行うと、通気
性及び透湿性が損われて、廃棄物中から発生するガス、
水蒸気のスムースな透過が達成されなくなる。この部分
接着法には、点状接着、線状接着、パターン状接着等が
あり、積層面積に対して、接着剤塗布面積が５〜９５
％、好ましくは１０〜８０％の割合になるように接着剤
の塗布を行うのがよい。[0005] As the water-blocking sheet used in the waste treatment of the present invention, a waterproof breathable sheet having a porous film at least in part is used. As a porous film,
Polyolefin, polyurethane, polyester,
Conventionally known porous polymer films such as polyether, polyvinyl chloride and cellulose can be used arbitrarily, but preferably stretched porous polytetrafluoroethylene (JP-B-56-45773, JP-B-56-17216).
No.) should be used. The average pore diameter of the porous film is 5 μm or less, preferably 1 μm or less, as long as it has both waterproofness and air permeability. The thickness of the porous film is usually 10 to 100 μm, preferably 30 to 80 μm. In the present invention, this porous film is preferably used by laminating and adhering a breathable reinforcing sheet to one or both surfaces thereof. In this case, as the air-permeable reinforcing sheet, any air-permeable, high-strength sheet can be used, and nonwoven fabric, woven fabric,
A net, waterproof paper, or the like is used. When laminating and bonding a reinforcing sheet to a porous film, the bonding is preferably performed by a partial bonding method. When performed by the whole surface bonding method, gas permeability and moisture permeability are impaired, gas generated from waste,
Smooth transmission of water vapor is no longer achieved. The partial bonding method includes dot bonding, linear bonding, and pattern bonding, and the adhesive application area is 5 to 95% with respect to the lamination area.
%, Preferably 10 to 80%.
【０００６】本発明で用いる多孔質フィルムに対して
は、その少なくとも一方の面に親水性高分子層を設ける
ことが好ましい。親水性高分子としては従来公知のもの
を使用できるが、特に、ポリエーテルウレタン樹脂、ペ
ルフルオロスルホン酸樹脂等の使用が好ましい。多孔質
フィルムに補強シートを積層する場合、この親水性高分
子層の上に補強シートを積層するのが好ましい。この親
水性高分子層は、油分との接触による多孔質フィルムの
劣化を防止する。この親水性高分子層の厚みは、１〜５
０μｍ、好ましくは５〜２０μｍである。[0006] The porous film used in the present invention is preferably provided with a hydrophilic polymer layer on at least one surface thereof. As the hydrophilic polymer, conventionally known ones can be used, and in particular, use of a polyether urethane resin, a perfluorosulfonic acid resin or the like is preferable. When a reinforcing sheet is laminated on the porous film, it is preferable to laminate the reinforcing sheet on the hydrophilic polymer layer. This hydrophilic polymer layer prevents deterioration of the porous film due to contact with oil. The thickness of the hydrophilic polymer layer is 1 to 5
0 μm, preferably 5 to 20 μm.
【０００７】本発明の遮水シートは、前記した多孔質フ
ィルムを少なくとも一部に有する防水通気性シートから
なる。この防水通気性シートは、それ全体を前記した多
孔質フィルムで構成することもできるが、この場合に
は、コストが高くなるため、従来一般に用いられている
遮水シートの一部に多孔質フィルムを組込んで用いるの
が有利である。遮水シートに組込む多孔質フィルムの位
置及び面積は、廃棄物層の面積、廃棄物層から放出され
るガスや水蒸気の量に応じて適当に決める。遮水シート
としては、水の透過を阻止し得るものであればどのよう
なものでも使用可能であるが、合成ゴムシートや合成樹
脂フィルム、例えば、ポリオレフィン樹脂シートや軟質
塩化ビニルシート等の使用が好適である。遮水シートに
対して多孔質フィルムを組込む場合の接着方法として
は、接着剤を用いる方法や熱融着する方法等があるが、
接着面の耐久性の点からは、熱融着方法の使用が有利で
ある。本発明の遮水シートを用いて廃棄物を埋立て処理
するには、廃棄物を所定量廃棄する毎に盛土を行うに際
し、本発明の遮水シートを廃棄物の上に敷設し、その敷
設した遮水シート上に盛土を行えばよい。The waterproof sheet of the present invention comprises a waterproof and breathable sheet having at least a part of the porous film described above. The waterproof breathable sheet may be entirely formed of the above-described porous film. However, in this case, the cost is high. It is advantageous to incorporate them. The position and area of the porous film to be incorporated into the impermeable sheet are appropriately determined according to the area of the waste layer and the amount of gas and water vapor released from the waste layer. As the water-blocking sheet, any sheet can be used as long as it can block water permeation, but the use of a synthetic rubber sheet or a synthetic resin film, such as a polyolefin resin sheet or a soft vinyl chloride sheet, is preferable. It is suitable. As a bonding method when the porous film is incorporated into the water shielding sheet, there are a method using an adhesive, a method of heat fusion, and the like.
From the viewpoint of the durability of the bonding surface, the use of the heat fusion method is advantageous. In order to bury waste using the impermeable sheet of the present invention, when embankment is performed every time a predetermined amount of waste is discarded, the impermeable sheet of the present invention is laid on the waste, and the It is only necessary to fill the embankment on the impermeable sheet.
【０００８】次に、本発明を図面を参照して説明する図
１は、本発明の防水通気性遮水シートの１例についての
要部斜視図を示す。この防水通気性遮水シートは、両面
に通気性補強シート２，３を積層接着させた多孔質フィ
ルム１を、複数の切欠部を有する遮水シート４のその切
欠部を包囲するように重ね、多孔質フィルムの周縁部に
おいて遮水シート４と接着させた構造のものである。遮
水シート１に多孔質フィルム１を組込む場合、その表面
には必ずしも切欠部を設ける必要はなく、多孔質シート
の両側面に遮水シートを接着して、中間部が多孔質フィ
ルムからなる構造のものや、遮水シートの所定個所に多
数の透孔を穿設し、その透孔部に多孔質フィルムを重
ね、接着する方法等を採用することができる。図２は、
本発明の防水通気性遮水シートを用いて廃棄物を埋立て
処理した際の状態図である。なお、図２において示した
各符号は図１に示したものと同一の意味を有する。Next, FIG. 1 for explaining the present invention with reference to the drawings is a perspective view of a main part of one example of a waterproof and breathable water-blocking sheet of the present invention. This waterproof and breathable water-blocking sheet is formed by stacking a porous film 1 on both sides of which the air-permeable reinforcing sheets 2 and 3 are laminated and bonded so as to surround the cutout of a water-blocking sheet 4 having a plurality of cutouts. The porous film has a structure in which the periphery of the porous film is adhered to the water shielding sheet 4. When the porous film 1 is incorporated into the water-blocking sheet 1, it is not always necessary to provide a cutout on the surface thereof, and the water-blocking sheet is bonded to both sides of the porous sheet, and the intermediate portion is formed of the porous film. Or a method in which a large number of through-holes are formed at predetermined locations of a water-impervious sheet, a porous film is laminated on the through-holes, and a method of bonding is used. FIG.
It is a state figure at the time of carrying out landfill processing of waste using the waterproof and air-permeable water-blocking sheet of the present invention. Each symbol shown in FIG. 2 has the same meaning as that shown in FIG.
【０００９】[0009]
【発明の効果】本発明の防水通気性の遮水シートを用い
て廃棄物を埋立て処理することによって、雨水が廃棄物
内に浸入することを完全に防止できる。従って、本発明
によれば、雨水が廃棄物に混入することにより生じる廃
棄物の嫌気性分解の促進の問題や、廃棄物からの有害成
分が雨水に溶出する問題を効果的に解決することができ
る。また、廃棄物から放出されるガスや水蒸気を本発明
遮水シートの通気性を利用して早期に放出させることが
できる。According to the present invention, the waste is landfilled by using the waterproof and air-permeable waterproof sheet of the present invention, so that rainwater can be completely prevented from entering the waste. Therefore, according to the present invention, it is possible to effectively solve the problem of promoting anaerobic decomposition of waste and the problem of harmful components from waste being eluted into rainwater caused by mixing rainwater with waste. it can. In addition, gas and water vapor released from the waste can be released at an early stage by utilizing the air permeability of the waterproof sheet of the present invention.
【図１】本発明の防水通気性遮水シートの１例について
の要部斜視図を示す。FIG. 1 is a perspective view of a main part of an example of a waterproof and breathable water-blocking sheet of the present invention.
【図２】本発明の防水通気性シートを用いて廃棄物を埋
立て処理した際の状態図を示す。FIG. 2 shows a state diagram when waste is landfilled using the waterproof and breathable sheet of the present invention.
１ 多孔質フィルム ２，３ 通気性補強シート ４ 遮水シート DESCRIPTION OF SYMBOLS 1 Porous film 2, 3 Breathable reinforcing sheet 4 Waterproof sheet
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B09B 1/00 B32B 5/18 B32B 7/14 B32B 27/12 B32B 27/30 ──────────────────────────────────────────────────続 き Continuation of front page (58) Field surveyed (Int.Cl. 7 , DB name) B09B 1/00 B32B 5/18 B32B 7/14 B32B 27/12 B32B 27/30
Claims (4)
少なくとも一部に有し、該多孔質フィルムの少なくとも
一方の面に通気性補強シートを接着面積が５〜９５％の
割合になるように部分接着させた防水通気性シートから
なる廃棄物の埋立て処理用遮水シート。1. A possess at least a portion of the porous film having a thickness of 10 to 80 [mu] m, at least the porous film
Adhesive area of 5% to 95% with a breathable reinforcing sheet on one side
A water-impervious sheet for landfill disposal of waste, consisting of a waterproof and breathable sheet partially adhered in proportions .
ロエチレンの延伸多孔質フィルムである請求項１の遮水
シート。2. The impermeable sheet according to claim 1, wherein the porous film is a stretched porous film of polytetrafluoroethylene.
方の面に親水性樹脂層を有するものである請求項１又は
２のいずれかの遮水シート。3. A porous film, at least one surface according to claim 1 or has a hydrophilic resin layer on the
2. The impermeable sheet of any of 2 .
に際し、前記請求項１〜３のいずれかの遮水シートを廃
棄物上に敷設した後盛土を行うことを特徴とする廃棄物
の埋立て処理方法。4. When embankment is performed every time a predetermined amount of waste is discarded, the embankment is performed after laying the impermeable sheet according to any one of claims 1 to 3 on the waste. Landfill treatment method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21636291A JP3171461B2 (en) | 1991-08-01 | 1991-08-01 | Waterproof sheet for landfilling waste and method for landfilling waste using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21636291A JP3171461B2 (en) | 1991-08-01 | 1991-08-01 | Waterproof sheet for landfilling waste and method for landfilling waste using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0647363A JPH0647363A (en) | 1994-02-22 |
| JP3171461B2 true JP3171461B2 (en) | 2001-05-28 |
Family
ID=16687382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21636291A Expired - Lifetime JP3171461B2 (en) | 1991-08-01 | 1991-08-01 | Waterproof sheet for landfilling waste and method for landfilling waste using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3171461B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08218567A (en) * | 1995-02-17 | 1996-08-27 | Japan Gore Tex Inc | Moisture-permeable composite sheet for concrete waterproofing |
| AU7493796A (en) * | 1995-10-27 | 1997-05-15 | W.L. Gore & Associates Gmbh | Biofilter cover |
| GB2315066A (en) * | 1996-07-05 | 1998-01-21 | Paul Watson Wheeler | Waste disposal |
| KR100341609B1 (en) * | 2000-03-04 | 2002-06-22 | 이금용 | The final capping method in landfill and landfill gas feed back system in its final cap |
-
1991
- 1991-08-01 JP JP21636291A patent/JP3171461B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0647363A (en) | 1994-02-22 |
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