JP2002059105A - Method of preventing emission of odor - Google Patents
Method of preventing emission of odorInfo
- Publication number
- JP2002059105A JP2002059105A JP2000246668A JP2000246668A JP2002059105A JP 2002059105 A JP2002059105 A JP 2002059105A JP 2000246668 A JP2000246668 A JP 2000246668A JP 2000246668 A JP2000246668 A JP 2000246668A JP 2002059105 A JP2002059105 A JP 2002059105A
- Authority
- JP
- Japan
- Prior art keywords
- activated carbon
- gas
- slaked lime
- emission
- binder
- 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.)
- Pending
Links
Landscapes
- Processing Of Solid Wastes (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は廃棄物の埋立地から
発生する臭気を粉末活性炭と粉末消石灰によって中和、
吸着する事で臭気の発散を防止する方法に関するもので
ある。TECHNICAL FIELD The present invention relates to a method for neutralizing odors generated from waste landfills by powdered activated carbon and powdered slaked lime.
The present invention relates to a method for preventing the emission of odor by adsorption.
【0002】[0002]
【従来の技術】廃棄物の埋立地からは汚染水の浸出や有
害ガスの発生が見られるケースが多々あり、大きな社会
問題に成っている。このうち浸出する汚染水の処置に関
しては、化学的処置や活性炭による吸着処置による除外
対策が講じられているケースが見られ、特許も出願され
ている。2. Description of the Related Art In many cases, leaching of contaminated water and generation of harmful gas are found in landfills of wastes, which is a major social problem. Regarding the treatment of contaminated water leached out, there have been cases where exclusion measures have been taken by chemical treatment or adsorption treatment with activated carbon, and patents have been filed.
【0003】しかるに発生する有害ガスの発散防止に有
効な対策を講じているケースはあまり見られない。廃棄
物をブルドーザーで圧縮した後、表面を土砂で覆う程度
の処置がほとんどである。埋め立ての高さが増してくる
とその法面から有害ガスが発散しているのが実情であ
る。この表面、法面から発生する有害ガスの発散を防止
する方法に関する特許は出願されていない。However, there are few cases in which effective measures are taken to prevent the emission of harmful gas generated. In most cases, waste is compressed with a bulldozer and the surface is covered with earth and sand. As the height of the landfill increases, harmful gas is emitted from the slope. No patent has been filed for a method for preventing the emission of harmful gas generated from this surface or slope.
【0004】[0004]
【発明が解決しようとする課題】廃棄物の埋立地の表面
から発生する有害ガスの発散防止の有効な対策が取られ
ていないのが現状である。そこで活性炭と消石灰を用い
て表面からの有害ガスの発散防止、特に見落とされてい
る法面からの発散を防止する方法を提供する。At present, no effective measures have been taken to prevent the emission of harmful gas generated from the surface of a waste landfill. Therefore, a method for preventing the emission of harmful gas from the surface by using activated carbon and slaked lime, particularly to prevent the emission from the overlooked slope is provided.
【0005】[0005]
【課題を解決するための手段】ガス吸着に優れる粉末活
性炭と酸性ガスを中和する能力を持つ粉末消石灰と土へ
の接着性を付与するバインダーを水スラリーにして埋立
地の表面、法面に噴霧または吹き付ける事で有害ガスの
発散を防止する方法を提供する。Means for Solving the Problems A powdery activated carbon having excellent gas adsorption, a powdered slaked lime having an ability to neutralize acidic gas and a binder for imparting adhesion to soil are made into a water slurry to be applied to the surface and slope of a landfill. Provided is a method of preventing harmful gas from being emitted by spraying or spraying.
【0006】消石灰が塩酸ガス、硫黄化合物ガス等と反
応して中和する事は周知の事である。この原理を利用し
て排煙脱硫や焼却炉の煙道ガスの中和に使用されている
事は周知である。これらの目的で粉末消石灰は一般に販
売されている。It is well known that slaked lime reacts with hydrochloric acid gas, sulfur compound gas and the like to neutralize it. It is well known that this principle is used for flue gas desulfurization and neutralization of flue gas in incinerators. Powdered slaked lime is generally sold for these purposes.
【0007】活性炭が有機ガスを効率よく吸着する事は
良く知られている。一般活性炭は疎水性であるため有機
ガスの吸着に優れている。また活性炭にはアルカリ性の
灰分を含むので酸性ガスの吸着に適している。粉末活性
炭は浄水場で黴臭発生時に大量に使用されている。又中
型焼却炉から発生するダイオキシン捕捉のため、粉末活
性炭は粉末消石灰と共に煙道ガスに吹き込まれバグフィ
ルターでキャッチされるプロセスで使用されている。活
性炭の粒度は100メッシュパスである。It is well known that activated carbon efficiently adsorbs organic gas. Since general activated carbon is hydrophobic, it is excellent in adsorbing organic gas. Activated carbon contains alkaline ash and is therefore suitable for absorbing acidic gas. Powdered activated carbon is used in large quantities at the water purification plant when moldy odor is generated. Activated carbon powder is blown into flue gas together with slaked lime to catch dioxins generated from a medium-sized incinerator, and is used in a process where it is caught by a bag filter. The particle size of the activated carbon is 100 mesh pass.
【0008】実験にはクラレケミカル(株)の4G−Hの
粉末を使用した。4G−Hのアンモニアと酸性ガスである
硫化水素の平衡吸着量Xiは次ぎの式で表される。Xi=A
・CiB 。 Aは定数、Bは定数で累乗である。 アンモニ
アのAは8.3で、硫化水素のAは34.0である。アン
モニアのBは0.063で硫化水素のBは0.126であ
る。Ciはその時のガス濃度である.ガス濃度10ppm
の両者の平衡吸着量(活性炭100g当たりの吸着量
g)は次ぎの数値になる。アンモニア 9.6。 硫化
水素 45.4。 硫化水素の吸着量が大きい。In the experiment, 4G-H powder from Kuraray Chemical Co., Ltd. was used. The equilibrium adsorption amount Xi of 4 G-H ammonia and hydrogen sulfide as an acidic gas is represented by the following equation. Xi = A
・ CiB. A is a constant, B is a constant and a power. A of ammonia is 8.3 and A of hydrogen sulfide is 34.0. B of ammonia is 0.063 and B of hydrogen sulfide is 0.126. Ci is the gas concentration at that time. Gas concentration 10ppm
The equilibrium adsorption amount (adsorption amount g per 100 g of activated carbon) of the two is as follows. Ammonia 9.6. Hydrogen sulfide 45.4. Large adsorption amount of hydrogen sulfide.
【0009】消石灰の色調は真っ白、一方活性炭の色調
は真っ黒である。中和力、吸着性能は色調とは無関係で
あるが、人目につく地域での散布には配慮が必要なケー
スもある。活性炭と消石灰のブレンド比率と色調を目視
で比較した。活性炭:消石灰=10:90ではグレー色
で違和感はない。20:80が黒色ではないと言う限界
である。勿論埋立地の表面に散布する量で見かけの色は
如何様にも変わる。活性炭100%でも散布量が少なけ
れば色調的に違和感は無い。標準的に言えば活性炭:消
石灰=95:5〜5:95が使用され易い比率である。The color tone of slaked lime is pure white, while the color tone of activated carbon is pure black. Neutralizing power and adsorption performance are not related to the color tone, but there are some cases where care must be taken when spraying in prominent areas. The blend ratio and color tone of activated carbon and slaked lime were compared visually. When activated carbon: slaked lime = 10: 90, the color is gray and there is no discomfort. 20:80 is the limit that is not black. Of course, the apparent color changes in any way depending on the amount sprayed on the landfill surface. Even with 100% activated carbon, there is no discomfort in color tone if the amount of application is small. Generally speaking, activated carbon: slaked lime = 95: 5 to 5:95 is an easy-to-use ratio.
【0010】活性炭と消石灰の混合スラリーを散布する
事で有機ガス、酸性ガスを中和し且つ吸着する事が出来
るが埋立地の表面状況によっては、風によって活性炭が
舞い上がる事がある。これを防止する目的で少量のバイ
ンダーを添加するのが効果的である。活性炭と消石灰の
総量に対し1〜5%添加するのが良い。バインダーとし
ては色々の物が使用可能であるが、PVA、CMC、各種のエ
マルジョンが好ましい。ただし安全の事を考慮すれば後
々二次公害を起こす可能性のある成分を含まないバイン
ダーの使用が好ましい。Spraying a mixed slurry of activated carbon and slaked lime can neutralize and adsorb organic gas and acidic gas, but depending on the surface condition of the landfill, the activated carbon may soar by the wind. To prevent this, it is effective to add a small amount of binder. It is preferable to add 1 to 5% to the total amount of activated carbon and slaked lime. Various binders can be used, but PVA, CMC and various emulsions are preferred. However, in consideration of safety, it is preferable to use a binder that does not contain a component that may cause secondary pollution later.
【0011】活性炭、消石灰、バインダーからなる水ス
ラリーを散布する方法は特別の技術は要しない。スラリ
ーの固形物が沈降しないように攪拌しておく事が必要で
ある。尚使用する活性炭はドライの場合は粉塵が立つの
で二次公害の発生を防止する配慮が必要である。ウェッ
ト品を使用すれば粉塵発生は防げるがコスト高になる。
散布する立地とコストを考慮してウェットかドライかを
選択すれば良い。The method of spraying a water slurry comprising activated carbon, slaked lime and a binder does not require any special technique. It is necessary to stir the slurry so that the solid matter does not settle. When activated carbon is used, it is necessary to take measures to prevent the occurrence of secondary pollution since dust is formed when it is dry. Use of a wet product can prevent dust generation but increases costs.
You can choose wet or dry depending on the location and cost of spraying.
【0012】[0012]
【発明の実施の形態】本発明を現場で効果的に実施する
時には現場調査を行う事が大切である。現場の立地条件
を把握し民家に近いか、平地か山間地かを把握する事が
大切である。発生しているガスの調査、土質のpH調査
を実施する事が大切である。DESCRIPTION OF THE PREFERRED EMBODIMENTS It is important to conduct a site survey when the present invention is to be effectively implemented on site. It is important to grasp the location conditions of the site and to determine whether it is close to a private house, flat ground or mountainous land. It is important to investigate the generated gas and pH of soil.
【0013】ガスの調査のために、直接ガスをサンプリ
ングしてGCMSで測定する方法、土砂をフラスコにい
れ加熱して出てくるガスをGCMSで測定する方法があ
る。一方pHは土砂をフラスコの中で水と攪拌し水相の
pHを測定する事で知ることが出来る。For the purpose of gas investigation, there are a method of directly sampling a gas and measuring it by GCMS, and a method of putting earth and sand in a flask and heating it and measuring the gas emitted by GCMS. On the other hand, pH can be known by stirring earth and sand with water in a flask and measuring the pH of the aqueous phase.
【0014】現場を把握する事でより効果的な散布方法
を決める事が出来る。活性炭と消石灰の混合比率、バイ
ンダーの添加比率、単位表面積当たりの散布量を決定す
る。By grasping the site, a more effective spraying method can be determined. Determine the mixing ratio of activated carbon and slaked lime, the addition ratio of binder, and the amount of spray per unit surface area.
【0015】[0015]
【実施例】山裾の約3000平方メートルの土地に6年
間産業廃棄物が埋め立てられた(積み上げ)廃棄物はブ
ルドーザーで踏み固めた後、表面は土砂で覆土されてい
る。高さが約10メートルになり、その法面からは雑多
な廃棄物が露出していた。住民から異臭がするとのクレ
ームが起こり現場を調査した。[Example] Industrial waste is landfilled (stacked) for about 3000 square meters on a hill at the foot of a mountain for 6 years. After the waste is compacted with a bulldozer, the surface is covered with earth and sand. The height was about 10 meters, and miscellaneous waste was exposed from the slope. A complaint was made by the residents that the odor was emitted, and the site was investigated.
【0016】表面は土砂で覆われておりひどい臭気は感
じられなかったが、法面からは異臭と硫黄系の刺激臭が
感じられた。表面土砂のpHは6.0であった。GC分
析で硫化水素とメルカプタンが検出された。水700k
g、粉末消石灰240kg、粉末活性炭60kg、アク
リル酸エステル系エマルジョン9kgのスラリーを調合
しスラリーポンプで表面及び法面に散布した。散布量は
1平方メートルあたり固形分で1kgであった。散布後
一ヶ月後は異臭が感じられい。臭気クレームは無くなっ
た。Although the surface was covered with earth and sand, no terrible odor was felt, but from the slope, an off-flavor and a pungent sulfur odor were felt. The pH of the surface sand was 6.0. Hydrogen sulfide and mercaptan were detected by GC analysis. 700k water
g, 240 kg of powdered slaked lime, 60 kg of powdered activated carbon, and 9 kg of an acrylate emulsion were mixed and sprayed on the surface and the slope with a slurry pump. The amount of application was 1 kg of solid content per square meter. One month after spraying, a bad smell is not felt. The odor complaint has gone.
【発明の効果】表面土砂のpHが6.0で、硫化水素と
メルカプタンを発生している産業廃棄物埋立地の表面及
び法面に粉末活性炭と粉末消石灰とエマルジョンからな
るスラリーを散布する事でガスの発散を防止する事が出
来た。According to the present invention, a slurry composed of powdered activated carbon, powdered slaked lime and an emulsion is sprayed on the surface and slope of an industrial waste landfill where the pH of the surface soil is 6.0 and hydrogen sulfide and mercaptan are generated. The emission of gas was prevented.
Claims (4)
インダーを添加してなる水スラリーを、臭気を発生して
いる地表面に吹き付け又は噴霧する事で廃棄物の埋立地
から発生する臭気の発散を防止する方法。1. Spraying or spraying a water slurry obtained by adding a binder to a mixture of powdered activated carbon and powdered slaked lime on the surface of an odor-producing ground to reduce the emission of odors generated from waste landfill sites. How to prevent.
〜5:95である請求項1に記載の臭気の発散を防止す
る方法。2. The mixing ratio of activated carbon and slaked lime is 95: 5.
The method according to claim 1, wherein the ratio is from 5 to 95.
バインダーの添加割合が1〜5%である請求項1に記載
の臭気の発散を防止する方法。3. The method for preventing odor emission according to claim 1, wherein the addition ratio of the binder to the total solid content of the activated carbon and the slaked lime is 1 to 5%.
である請求項1に記載の臭気の発散を防止する方法。4. The method according to claim 1, wherein the binder is PVA, CMC, or an emulsion.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000246668A JP2002059105A (en) | 2000-08-16 | 2000-08-16 | Method of preventing emission of odor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000246668A JP2002059105A (en) | 2000-08-16 | 2000-08-16 | Method of preventing emission of odor |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2002059105A true JP2002059105A (en) | 2002-02-26 |
Family
ID=18736933
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2000246668A Pending JP2002059105A (en) | 2000-08-16 | 2000-08-16 | Method of preventing emission of odor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2002059105A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005105010A (en) * | 2003-09-26 | 2005-04-21 | Yamaguchi Prefecture | Inorganic coating material and voc-adsorbing functional material using the same |
JP2005306835A (en) * | 2004-04-20 | 2005-11-04 | Nagaoka Kk | Alkaline powder for inhibiting putrefaction of food waste |
JP2012250211A (en) * | 2011-06-06 | 2012-12-20 | Dainichiseika Color & Chem Mfg Co Ltd | Adsorbent composition, adsorbent, and method for applying the same |
-
2000
- 2000-08-16 JP JP2000246668A patent/JP2002059105A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005105010A (en) * | 2003-09-26 | 2005-04-21 | Yamaguchi Prefecture | Inorganic coating material and voc-adsorbing functional material using the same |
JP2005306835A (en) * | 2004-04-20 | 2005-11-04 | Nagaoka Kk | Alkaline powder for inhibiting putrefaction of food waste |
JP2012250211A (en) * | 2011-06-06 | 2012-12-20 | Dainichiseika Color & Chem Mfg Co Ltd | Adsorbent composition, adsorbent, and method for applying the same |
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