JPH03245886A - Treatment of paper waste - Google Patents
Treatment of paper wasteInfo
- Publication number
- JPH03245886A JPH03245886A JP2041175A JP4117590A JPH03245886A JP H03245886 A JPH03245886 A JP H03245886A JP 2041175 A JP2041175 A JP 2041175A JP 4117590 A JP4117590 A JP 4117590A JP H03245886 A JPH03245886 A JP H03245886A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- cellulose
- waste
- suspension
- treatment
- 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
- 239000010893 paper waste Substances 0.000 title claims abstract description 18
- 230000029087 digestion Effects 0.000 claims abstract description 10
- 229920002678 cellulose Polymers 0.000 claims abstract description 9
- 239000001913 cellulose Substances 0.000 claims abstract description 9
- GUBGYTABKSRVRQ-CUHNMECISA-N D-Cellobiose Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1O[C@@H]1[C@@H](CO)OC(O)[C@H](O)[C@H]1O GUBGYTABKSRVRQ-CUHNMECISA-N 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 11
- 108010059892 Cellulase Proteins 0.000 claims description 8
- 229940106157 cellulase Drugs 0.000 claims description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 8
- 239000000725 suspension Substances 0.000 abstract description 6
- 239000010802 sludge Substances 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 4
- 239000007787 solid Substances 0.000 abstract description 3
- 108090000790 Enzymes Proteins 0.000 abstract description 2
- 102000004190 Enzymes Human genes 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 abstract description 2
- 230000035764 nutrition Effects 0.000 abstract 1
- 235000016709 nutrition Nutrition 0.000 abstract 1
- 241001148471 unidentified anaerobic bacterium Species 0.000 abstract 1
- 239000010813 municipal solid waste Substances 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 239000002002 slurry Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 239000007853 buffer solution Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229940088598 enzyme Drugs 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 238000010169 landfilling Methods 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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
- Y02W30/20—Waste processing or separation
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、主として紙からなる廃棄物の処理方法に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for treating waste mainly consisting of paper.
近年、事務所ビルなどで発生する紙廃棄物の量が著しく
増大し、その処分が問題になっている。従来、紙廃棄物
は、
■ 再生紙製造装置により再生紙を製造する：■ ゴミ
焼却場で焼却する１
■ ゴミ埋め立て地に運んで埋め立てる；などの方法で
利用または処分されているが、再生紙を匍−ａ＋−ｊ−
ｉ１＋ｌ＋廊＃子 又 イら マ キ １．、〃
餌 ふぽｆ、−Ｊ／絣以外のものを選別する作業が
大変であり、また紙質により用途が限定されてしまうこ
ともあって、新聞紙など、混在物が少なく且つ品質の安
定したものだけが利用されている。事務所ビルにおいて
発生するゴミは、主としてコピー、印刷物、コンピュー
タアウトプットなど、雑多な紙からなり、しかも約２０
％は紙以外のものであるという調査結果もあり、はとん
どのものは紙として再生利用するのには適しない。また
、焼却や埋め立てによる処分は、運搬費の増大、大気汚
染、埋め立て地不足などの問題を抱えており、増大する
廃棄量に対応することができない。In recent years, the amount of paper waste generated in office buildings and the like has increased significantly, and its disposal has become a problem. Conventionally, paper waste has been used or disposed of in the following ways: ■ Produce recycled paper using recycled paper manufacturing equipment: ■ Incinerate it at a garbage incinerator1 ■ Transport it to a garbage landfill and bury it; However, recycled paper wo-a+-j-
i1+l+ro #ko mata ira ma ki 1. ,〃
Bait: Fupo f, -J It's being used. Garbage generated in office buildings mainly consists of miscellaneous paper such as copies, printed matter, computer output, etc.
Some research has shown that % of paper is made of materials other than paper, and most of it is not suitable for recycling as paper. In addition, disposal by incineration or landfilling has problems such as increased transportation costs, air pollution, and lack of landfill space, and cannot cope with the increasing amount of waste.
工場排水、畜産排水、都市下水等、有機性排水の処理法
として一般的な嫌気性消化法（いわゆるメタン発酵）は
、紙を構成するセルロースを分解することが出来ないた
め、紙廃棄物の処理手段としては採用されていない。Anaerobic digestion (so-called methane fermentation), which is a common method for treating organic wastewater such as factory wastewater, livestock wastewater, and urban sewage, cannot decompose the cellulose that makes up paper, so it is difficult to treat paper waste. It has not been adopted as a method.
本発明の目的は、上述のように従来の処理方法ではすべ
てを処理することが困難になりつつある祇廃棄物の新規
な処理方法を提供することにある。An object of the present invention is to provide a new method for treating Gi waste, which is becoming difficult to treat completely using conventional treatment methods, as described above.
上記目的を達成することに成功した本発明の紙廃棄物処
理法は、紙廃棄物を水中に懸濁させ、セルラーゼを作用
させて紙のセルロースをセロビオースに分解し、次いで
嫌気性消化させることを特徴とするものである。The paper waste treatment method of the present invention, which has succeeded in achieving the above object, involves suspending paper waste in water, allowing cellulase to act on the paper to decompose the cellulose in the paper into cellobiose, and then subjecting it to anaerobic digestion. This is a characteristic feature.
以下、この処理法について詳述する。This processing method will be explained in detail below.
紙廃棄物はまず水中に投入し、固形分濃度を数パーセン
トにして撹拌することにより紙を破砕し、スラリ状にす
る。この後、懸濁液にセルラーゼを添加し、該酵素の作
用適温に保って、紙のセルロースの大部分をセロビオー
スまで加水分解させる。Paper waste is first put into water, the solid content is reduced to several percent, and the paper is crushed by stirring and made into a slurry. Thereafter, cellulase is added to the suspension and maintained at a suitable temperature for the action of the enzyme, hydrolyzing most of the cellulose in the paper to cellobiose.
セルラーゼ処理によりほとんど液状になった懸濁液は、
そのまま、あるいは嫌気性微生物のための無機栄養源や
余剰汚泥その他の有機性廃棄物等と混合されて、嫌気性
消化処理に付される。嫌気性消化処理は、都市下水処理
場等において行われているものと同様にして行えばよく
、特別な装置、条件等は不要である。嫌気性消化により
、セロビオースは主としてメタンからなるガスに分解さ
れる。The suspension, which has become almost liquid due to cellulase treatment,
It is subjected to anaerobic digestion treatment either as it is or mixed with inorganic nutrients for anaerobic microorganisms, surplus sludge, and other organic wastes. The anaerobic digestion treatment can be carried out in the same manner as that carried out in urban sewage treatment plants, etc., and special equipment, conditions, etc. are not required. Anaerobic digestion breaks down cellobiose into a gas consisting primarily of methane.
実験条件
■ 処理した紙廃棄物
事務所ビルから発生した紙廃棄物。コピーが主でア’ｌ
、他に新聞紙、コンピューターアウトプット記録紙等を
含む。Experimental conditions ■ Processed paper waste Paper waste generated from an office building. Copying is the main thing.
, and also includes newspapers, computer output recording paper, etc.
■ 紙廃棄物のスラリー化
水に対する紙廃棄物の割合＝５％
撹拌条件：５０ｒｐｍ、３０分
■ セルラーゼ処理
紙廃棄物に対するセルラーゼ添加量＝３％ｐＨ：６．０
（緩衝液にて調整）
温度：室温
処理時間＝１時間
処理による変化：処理液はほぼ透明化し、固形分の８３
％が１００メツシユふるいを通過した（処理前の１００
メツシユふるい通過分：１２％）。■ Ratio of paper waste to slurry water = 5% Stirring conditions: 50 rpm, 30 minutes ■ Amount of cellulase added to cellulase-treated paper waste = 3% pH: 6.0
(Adjusted with buffer solution) Temperature: room temperature Treatment time = 1 hour Changes due to treatment: The treatment solution became almost transparent, and the solid content was 83%.
% passed through a 100 mesh sieve (100% before treatment
(Amount passing through mesh sieve: 12%).
■ 嫌気性消化処理
種汚泥：下水処理場から採取した消化汚泥種汚泥濃度（
ＶＳ）： ３．５％
消化温度＝３７°Ｃ
消化日数＝５日
方式：回分式
比較例として、セルラーゼ処理を行わないほかは上記と
同様にして紙廃棄物の嫌気性消化処理を行なった。■ Anaerobic digested sludge: Digested sludge type sludge concentration collected from sewage treatment plants (
VS): 3.5% Digestion temperature = 37°C Number of days for digestion = 5 days Method: Batch method As a comparative example, paper waste was subjected to anaerobic digestion treatment in the same manner as above, except that the cellulase treatment was not performed.
実験結果
表１のとおり
表１
〔発明の効果〕
本発明の処理法は、上述のように紙廃棄物をセルラーゼ
で処理してから嫌気性消化させるものであるから、紙質
のいかんを問わずに、また焼却処分や廃棄処分のように
環境汚染を招く恐れもなしに、燃料として有用なメタン
ガスを回収しながら効率よく紙を処理することが可能で
ある。Experimental results as shown in Table 1 Table 1 [Effects of the Invention] As mentioned above, the treatment method of the present invention treats paper waste with cellulase and then anaerobically digests it, so it can be used regardless of the paper quality. Furthermore, it is possible to efficiently process paper while recovering methane gas, which is useful as fuel, without causing environmental pollution as would be the case with incineration or disposal.
Claims (1)
のセルロースをセロビオースに分解し、次いで嫌気性消
化させることを特徴とする紙廃棄物の処理法。A method for treating paper waste, which comprises suspending paper waste in water, allowing cellulase to act to decompose the cellulose in the paper into cellobiose, and then subjecting it to anaerobic digestion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2041175A JPH03245886A (en) | 1990-02-23 | 1990-02-23 | Treatment of paper waste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2041175A JPH03245886A (en) | 1990-02-23 | 1990-02-23 | Treatment of paper waste |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03245886A true JPH03245886A (en) | 1991-11-01 |
Family
ID=12601094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2041175A Pending JPH03245886A (en) | 1990-02-23 | 1990-02-23 | Treatment of paper waste |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03245886A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011140482A2 (en) * | 2010-05-07 | 2011-11-10 | Renewable Fibers,Llc | Methods for treatment of waste activated sludge |
| JP2019092405A (en) * | 2017-11-20 | 2019-06-20 | 王子ホールディングス株式会社 | Bedding material for raising animal and disposal method of bedding material for raising animal |
-
1990
- 1990-02-23 JP JP2041175A patent/JPH03245886A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011140482A2 (en) * | 2010-05-07 | 2011-11-10 | Renewable Fibers,Llc | Methods for treatment of waste activated sludge |
| WO2011140482A3 (en) * | 2010-05-07 | 2012-04-05 | Renewable Fibers,Llc | Methods for treatment of waste activated sludge |
| JP2019092405A (en) * | 2017-11-20 | 2019-06-20 | 王子ホールディングス株式会社 | Bedding material for raising animal and disposal method of bedding material for raising animal |
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