JPH1176967A - Early stage stable land reclamating disposing - Google Patents
Early stage stable land reclamating disposingInfo
- Publication number
- JPH1176967A JPH1176967A JP9235292A JP23529297A JPH1176967A JP H1176967 A JPH1176967 A JP H1176967A JP 9235292 A JP9235292 A JP 9235292A JP 23529297 A JP23529297 A JP 23529297A JP H1176967 A JPH1176967 A JP H1176967A
- Authority
- JP
- Japan
- Prior art keywords
- waste
- leachate
- extraction solvent
- water
- landfill
- 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.)
- Granted
Links
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、一般廃棄物、産業
廃棄物等の最終処分場における埋立技術に係り、閉鎖に
要する期間の短縮を図る早期安定型埋立処分方法を提供
することを目的とする。BACKGROUND OF THE INVENTION The present invention relates to a landfill technology at a final disposal site for general waste, industrial waste, and the like, and an object thereof is to provide an early stable landfill method for shortening a period required for closing. I do.
【０００２】[0002]
【従来の技術】最終処分場における浸出水の水量水質
は、埋立ごみ質、降雨等の気象条件、埋立構造、埋立地
の規模、集水面積の大小、埋立期間、ごみ埋立経過時間
等により異なり、埋立地固有の特徴が見られる。たとえ
ば、浸出水中の有機性汚濁成分は埋立初期には高濃度で
あるが、経年的に減少し、数年後には生物分解可能な、
あるいは困難な有機物が残ってくる。また、焼却残渣や
不燃ごみを埋め立てる場合には、無機物が多いのでこれ
らに由来するＳＳや無機塩類が含まれることになる。ま
た、焼却残渣中や不燃ごみ中に生物分解が容易な有機物
が多い場合は、ＢＯＤ，ＣＯＤ，Ｔ−Ｎ，ＮＨ4 +−Ｎ等
が比較的高濃度になる。2. Description of the Related Art Water quality of leachate at final disposal sites varies depending on the quality of landfill waste, weather conditions such as rainfall, landfill structure, size of landfill, size of catchment area, landfill period, elapsed time of landfill. , Characteristic of the landfill. For example, organic pollutants in leachate are high in the early stages of landfill, but decrease over time and are biodegradable in a few years.
Or difficult organic matter remains. Moreover, when landfilling incineration residues and non-combustible waste, since there are many inorganic substances, SS and inorganic salts derived from these are included. In addition, when there are many easily biodegradable organic substances in the incineration residue or incombustible waste, BOD, COD, TN, NH 4 + -N, etc. have a relatively high concentration.
【０００３】[0003]
【発明が解決しようとする課題】埋立処分場における浸
出水は、埋立後に既に長い年月を経た既設埋立区画から
出る浸出水も、埋立後の年月が短い新設埋立区画から出
る浸出水も、廃棄物の存在しない未設埋立区画から出る
浸出水をも一元的に集水し、その全量を同一工程におい
て処理している。埋立処分場の閉鎖は、処分場の全域に
おける埋立が完了した後に、浸出水中の重金属、塩分等
の有害成分の濃度が許容値以下に低下し、浸出水の水質
が安定した時点で行なっている。The leachate at a landfill site is not limited to leachate from an existing landfill section that has already passed a long time after landfill, and leachate from a new landfill section that has a short period of time after landfill. Leachate from unfilled landfills where waste does not exist is also collectively collected, and the entire amount is treated in the same process. Closing of the landfill site is performed when the concentration of harmful components such as heavy metals and salts in the leachate has fallen below the allowable value after the landfill site has been completely filled, and the leachate water quality has stabilized. .
【０００４】したがって、埋立処分場の供用開始から閉
鎖までに要する期間は長年月となり、浸出水処理施設に
おける処理プラントの規模や処理能力は、処分場に降る
全降水量を対象として設定する必要があった。[0004] Therefore, the period required from the start of operation of a landfill disposal site to the closure thereof is many months, and the size and capacity of a treatment plant in a leachate treatment facility need to be set for the total amount of precipitation falling on the disposal site. there were.
【０００５】本発明は上記した課題を解決するものであ
り、浸出水の水質を早期に安定化し、埋立の開始から閉
鎖までの期間を短縮する早期安定型埋立処分方法を提供
することを目的とする。An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide an early stable landfill method for stabilizing the quality of leachate water at an early stage and shortening the period from the start of landfill to closing. I do.
【０００６】[0006]
【課題を解決するための手段】上記の課題を解決するた
めに、本発明の早期安定型埋立処分方法は、埋立処分に
先立って廃棄物をごみ質別に貯留し、貯留した廃棄物に
抽出溶媒としの水を散布し、廃棄物に浸透する抽出溶媒
により廃棄物中の有害成分を溶解して除去し、抽出溶媒
および有害成分を浸出水として浸出水処理設備で処理
し、浸出水処理設備で回収する処理水を抽出溶媒として
循環利用し、浸出水の水質が安定した廃棄物を埋め立て
るものである。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, an early stable landfill method according to the present invention stores wastes by refuse quality prior to landfill disposal, and extracts the extracted solvent into the stored wastes. Harmful components in the waste are dissolved and removed by the extraction solvent that permeates the waste, and the extraction solvent and the harmful components are treated as leachate in the leachate treatment facility. The recovered treated water is circulated and used as an extraction solvent to reclaim waste with stable leachate quality.
【０００７】[0007]
【発明の実施の形態】以下、本発明の実施形態を図面に
基づいて説明する。図１において、埋立処分場１には複
数の独立した区画１ａ，１ｂ，１ｃ，１ｄを設けてお
り、各区画１ａ，１ｂ，１ｃ，１ｄには集排水手段とし
て竪型集排水管２を設けている。各区画１ａ，１ｂ，１
ｃ，１ｄは、廃棄物Ａをごみ質別に貯留する領域をな
し、一時的な貯留場所であってもよく、最終的な貯留場
所であってもよい。Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, a plurality of independent sections 1a, 1b, 1c, 1d are provided in a landfill disposal site 1, and each section 1a, 1b, 1c, 1d is provided with a vertical drainage pipe 2 as a drainage means. ing. Each section 1a, 1b, 1
c and 1d form an area for storing the waste A according to the quality of the waste, and may be a temporary storage place or a final storage place.
【０００８】各竪型集排水管２は導管３および導管３の
途中に設けた開閉弁４を介して浸出水処理施設５に接続
している。各区画１ａ，１ｂ，１ｃ，１ｄの上方には散
水管６を配置しており、各散水管６は散水弁７を介して
循環配管８に連通し、循環配管８は基端側が浸出水処理
施設５に接続している。Each vertical collecting and draining pipe 2 is connected to a leachate treatment facility 5 via a conduit 3 and an on-off valve 4 provided in the middle of the conduit 3. A sprinkler pipe 6 is arranged above each section 1a, 1b, 1c, 1d, and each sprinkler pipe 6 communicates with a circulation pipe 8 via a sprinkler valve 7, and the circulation pipe 8 has a base end on which leachate is treated. It is connected to facility 5.
【０００９】浸出水処理施設５は、第１凝集沈殿処理設
備、生物処理設備、第２凝集沈殿処理設備、砂ろ過処理
設備、活性炭吸着処理設備などを備えている。第１凝集
沈殿処理設備は、浸出水原水のカルシウムを除去して、
配管・ポンプ類のスケーリングを防止するものであり、
カルシウム除去剤を併用したアルカリ凝集沈殿処理を行
なう。生物処理設備は、接触酸化型の循環脱窒法を採用
しており、充填材表面の微生物を利用して、原水中の有
機物の分解と窒素成分の除去を行なう。第２凝集沈殿処
理設備は、生物処理水中の汚濁物質を薬品によって凝集
させ、重力沈殿除去するものであり、ＣＯＤや色度成分
の除去に効果的な弱酸性凝集沈殿処理を行なう。砂ろ過
処理設備は、凝集沈殿処理水中に残る微細な浮遊物質な
どを、アンスラサイトと珪砂によるろ材で捕捉し、除去
する。活性炭吸着処理装置は、活性炭の強力な吸着能力
によってＣＯＤや色度成分などを除去する。The leachate treatment facility 5 includes a first coagulation / sedimentation treatment facility, a biological treatment facility, a second coagulation / sedimentation treatment facility, a sand filtration treatment facility, an activated carbon adsorption treatment facility, and the like. The first coagulation sedimentation treatment equipment removes calcium in the leachate raw water,
It prevents scaling of piping and pumps,
An alkali coagulation sedimentation treatment using a calcium remover is performed. The biological treatment equipment employs a catalytic oxidation-type circulating denitrification method, in which microorganisms on the surface of the filler are used to decompose organic matter in raw water and remove nitrogen components. The second coagulation and sedimentation treatment equipment coagulates pollutants in biological treatment water by chemicals and removes them by gravity sedimentation, and performs a weakly acidic coagulation and sedimentation treatment that is effective in removing COD and chromaticity components. The sand filtration equipment captures and removes fine suspended substances and the like remaining in the coagulated sedimentation treatment water using a filter medium made of anthracite and silica sand. The activated carbon adsorption treatment device removes COD, chromaticity components, and the like by virtue of the strong adsorption capacity of activated carbon.
【００１０】廃棄物Ａの埋立処分に際しては廃棄物Ａを
ごみ質別に分類して各区画１ａ，１ｂ，１ｃ，１ｄに貯
留する。廃棄物Ａとしては、一般家庭から出る一般廃棄
物、工場等から出る産業廃棄物、都市ごみ焼却施設から
出る焼却残渣や不燃ごみ等がある。At the time of landfill disposal of waste A, waste A is classified according to refuse quality and stored in each of sections 1a, 1b, 1c and 1d. The waste A includes general waste from general households, industrial waste from factories, etc., incineration residues from municipal waste incineration facilities, and non-combustible waste.
【００１１】各区画１ａ，１ｂ，１ｃ，１ｄに廃棄物Ａ
を貯留する状態において、各散水弁７を開放し、散水管
６から抽出溶媒としの水を散布する。廃棄物Ａに浸透す
る抽出溶媒は廃棄物Ａに含まれる有害成分を溶解して除
去し、有害成分とともに浸出水として流出する。各区画
１ａ，１ｂ，１ｃ，１ｄに対する抽出溶媒の散布は、各
区画１ａ，１ｂ，１ｃ，１ｄの廃棄物Ａのごみ質に応じ
て調整し、散布量、散布頻度等を異ならせ、有害成分の
溶解が困難なごみ質ほど抽出溶媒の供給量を多くする。In each of the sections 1a, 1b, 1c, 1d, waste A
In the state in which is stored, each watering valve 7 is opened, and water as an extraction solvent is sprayed from the watering pipe 6. The extraction solvent that permeates the waste A dissolves and removes harmful components contained in the waste A, and flows out as leachate together with the harmful components. The application of the extraction solvent to each of the sections 1a, 1b, 1c, and 1d is adjusted according to the quality of the waste A in each of the sections 1a, 1b, 1c, and 1d. The more the waste is difficult to dissolve, the greater the amount of extraction solvent supplied.
【００１２】各区画１ａ，１ｂ，１ｃ，１ｄにおける浸
出水は、各開閉弁４を開放する状態において各導管３を
通って浸出水処理施設５に流入する。浸出水処理施設５
においては上述の各処理を行なって浸出水を処理し、回
収した処理水は抽出溶媒として循環配管８を通して各区
画１ａ，１ｂ，１ｃ，１ｄに循環し、一部の処理水は減
菌処理後に放流する。The leachate in each section 1a, 1b, 1c, 1d flows into the leachate treatment facility 5 through each conduit 3 in a state where each on-off valve 4 is opened. Leachate treatment facility 5
In the above, the leachate is treated by performing each of the above-mentioned treatments, and the collected treated water is circulated as an extraction solvent through the circulation pipe 8 to each of the sections 1a, 1b, 1c, and 1d, and a part of the treated water is subjected to the sterilization treatment Release.
【００１３】各区画１ａ，１ｂ，１ｃ，１ｄから出る浸
出水はその水質を個別に管理し、浸出水の水質が予め設
定した許容基準値に安定した時点で、当該区画１ａ，１
ｂ，１ｃ，１ｄにおける抽出溶媒の散布を終了する。抽
出作業の終了した区画１ａ，１ｂ，１ｃ，１ｄにおける
廃棄物Ａは最終の埋立区域に搬送しても良いし、当該区
画１ａ，１ｂ，１ｃ，１ｄを最終処分の場所としても良
い。The leachate discharged from each of the sections 1a, 1b, 1c, 1d is individually controlled in its quality, and when the quality of the leachate is stabilized at a preset allowable reference value, the sections 1a, 1b, 1c, 1d are controlled.
The spraying of the extraction solvent in b, 1c, and 1d is completed. The waste A in the sections 1a, 1b, 1c, 1d after the extraction work may be conveyed to the final landfill area, or the sections 1a, 1b, 1c, 1d may be used as final disposal sites.
【００１４】浸出水の処理に際しては、各開閉弁４を適
宜に開閉操作し、各区画１ａ，１ｂ，１ｃ，１ｄから出
る浸出水を選択的に浸出水処理施設５に導き、浸出水の
性状に応じた処理を行なうことも可能であり、各区画１
ａ，１ｂ，１ｃ，１ｄから出る浸出水を選択的に混合
し、浸出水処理施設５へ流入する浸出水の性状を調整す
ることも可能である。In the treatment of leachate, each on-off valve 4 is appropriately opened and closed, and leachate coming out of each section 1a, 1b, 1c, 1d is selectively guided to the leachate treatment facility 5, and the properties of leachate are treated. It is also possible to perform processing according to
It is also possible to selectively mix leachate from a, 1b, 1c, 1d and adjust the properties of leachate flowing into leachate treatment facility 5.
【００１５】[0015]
【発明の効果】以上述べたように本発明によれば、廃棄
物をごみ質別に貯留し、浸出水処理設備で回収する処理
水を抽出溶媒として循環利用しながら廃棄物に散布する
ことにより、雨水によらずに人為的に廃棄物中の有害成
分を溶解し、早期に浸出水の水質を安定化することがで
き、埋立の開始から閉鎖までの期間を短縮することがで
きる。As described above, according to the present invention, waste is stored according to the type of waste, and the treated water recovered in the leachate treatment facility is sprayed on the waste while being recycled as an extraction solvent. It is possible to artificially dissolve harmful components in waste without depending on rainwater, to stabilize the quality of leachate at an early stage, and to shorten the period from the start of landfill to closure.
【図１】本発明の実施形態における埋立処分方法を示す
摸式図である。FIG. 1 is a schematic diagram showing a landfill disposal method according to an embodiment of the present invention.
Ａ 廃棄物 １ 埋立処分場 １ａ，１ｂ，１ｃ，１ｄ 区画 ２ 竪型集排水管 ３ 導管 ４ 開閉弁 ５ 浸出水処理施設 ６ 散水管 ７ 散水弁 ８ 循環配管 A Waste 1 Landfill site 1a, 1b, 1c, 1d Section 2 Vertical drainage pipe 3 Pipe 4 On-off valve 5 Leachate treatment facility 6 Sprinkler pipe 7 Sprinkler valve 8 Circulation pipe
Claims (1)
貯留し、貯留した廃棄物に抽出溶媒としの水を散布し、
廃棄物に浸透する抽出溶媒により廃棄物中の有害成分を
溶解して除去し、抽出溶媒および有害成分を浸出水とし
て浸出水処理設備で処理し、浸出水処理設備で回収する
処理水を抽出溶媒として循環利用し、浸出水の水質が安
定した廃棄物を埋め立てることを特徴とする早期安定型
埋立処分方法。Claims: 1. Prior to landfill disposal, wastes are stored according to their quality, and the stored wastes are sprayed with water as an extraction solvent.
The extraction solvent that permeates the waste dissolves and removes the harmful components in the waste, treats the extraction solvent and the harmful components as leachate in the leachate treatment facility, and recovers the treated water that is collected in the leachate treatment facility. An early stable landfill method characterized by reclaiming waste with stable leachate water quality by circulating it as waste.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23529297A JP3439636B2 (en) | 1997-09-01 | 1997-09-01 | Early stable landfill method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23529297A JP3439636B2 (en) | 1997-09-01 | 1997-09-01 | Early stable landfill method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1176967A true JPH1176967A (en) | 1999-03-23 |
| JP3439636B2 JP3439636B2 (en) | 2003-08-25 |
Family
ID=16983959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23529297A Expired - Fee Related JP3439636B2 (en) | 1997-09-01 | 1997-09-01 | Early stable landfill method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3439636B2 (en) |
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-
1997
- 1997-09-01 JP JP23529297A patent/JP3439636B2/en not_active Expired - Fee Related
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| EP2259135A2 (en) | 1999-05-14 | 2010-12-08 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor Device and Manufacturing Method Thereof |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP3439636B2 (en) | 2003-08-25 |
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