JPH039837Y2 - - Google Patents
Info
- Publication number
- JPH039837Y2 JPH039837Y2 JP8747585U JP8747585U JPH039837Y2 JP H039837 Y2 JPH039837 Y2 JP H039837Y2 JP 8747585 U JP8747585 U JP 8747585U JP 8747585 U JP8747585 U JP 8747585U JP H039837 Y2 JPH039837 Y2 JP H039837Y2
- Authority
- JP
- Japan
- Prior art keywords
- methane fermentation
- tank body
- flow path
- digestive bacteria
- tower body
- 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
Links
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 54
- 241000894006 Bacteria Species 0.000 claims description 32
- 230000001079 digestive effect Effects 0.000 claims description 32
- 238000000855 fermentation Methods 0.000 claims description 25
- 230000004151 fermentation Effects 0.000 claims description 25
- 239000007788 liquid Substances 0.000 claims description 12
- 230000029087 digestion Effects 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 6
- 238000005192 partition Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000010802 sludge Substances 0.000 claims description 4
- 229920000620 organic polymer Polymers 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 22
- 238000000034 method Methods 0.000 description 8
- 239000000243 solution Substances 0.000 description 4
- 239000011550 stock solution Substances 0.000 description 4
- 239000008188 pellet Substances 0.000 description 3
- 238000009280 upflow anaerobic sludge blanket technology Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 241001148471 unidentified anaerobic bacterium Species 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Treatment Of Sludge (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、液状物質のメタン発酵装置を行う装
置、特にペレツト状の嫌気性消化菌によつてメタ
ン発酵を行わしめる装置に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an apparatus for carrying out methane fermentation of liquid substances, particularly an apparatus for carrying out methane fermentation using pellet-shaped anaerobic digestive bacteria.
従来のメタン発酵法は、浮遊フロツク状の嫌気
性消化菌を利用して行うものであつたが、近年、
砂、粒状活性炭等の充填層を形成し、該充填材の
粒子表面に嫌気性消化菌を付着繁殖させてメタン
発酵を行う固定床法、及び嫌気性消化菌自身があ
る条件下でペレツト状粒子を形成するという性質
を利用して、ペレツト状嫌気性消化菌のブランケ
ツト層（流動層）を形成してメタン発酵を行う
UASB法（Upflow Anaerobic Sludge Blanket
法）の開発が盛んに行われるようになつてきた。
The conventional methane fermentation method used floating flocs of anaerobic digestive bacteria, but in recent years,
A fixed bed method in which a packed bed of sand, granular activated carbon, etc. is formed, and anaerobic digestive bacteria are attached and propagated on the particle surface of the filler to perform methane fermentation, and pellet-shaped particles are produced under conditions where the anaerobic digestive bacteria themselves are present. Taking advantage of the property of forming anaerobic bacteria, a blanket layer (fluidized bed) of pelleted anaerobic digestive bacteria is formed to perform methane fermentation.
UASB method (Upflow Anaerobic Sludge Blanket
Development of the law has become active.
しかしながら、前記固定床法は、SSによる固
定床の閉塞トラブルが起こるほかに、系内に維持
可能な消化菌濃度が十分とは言えず、また
UASB法は嫌気性消化菌の代謝によつて生成し
たメタンガス、炭酸ガス、その他のガスが上昇す
るときにブランケツト層を撹乱し、ペレツト状の
消化菌が流出しやすいという問題点をもつてお
り、さらに運転開始時にペレツト状消化菌が結局
形成されないままに終わるという運転管理上及び
機能上の重大な問題点がみられる。
However, with the fixed bed method, in addition to the problem of blockage of the fixed bed due to SS, the concentration of digestive bacteria that can be maintained in the system is not sufficient.
The UASB method has the problem that when methane gas, carbon dioxide gas, and other gases generated by the metabolism of anaerobic digestive bacteria rise, they disturb the blanket layer, making it easy for pellet-shaped digestive bacteria to flow out. Furthermore, there is a serious problem in operational management and functionality in that pellet-shaped digestive bacteria are not formed at the start of operation.
本考案は、前記従来の固定床法、UASB法に
おける問題点を解決する新規なメタン発酵装置を
提供することを目的とし、具体的には、
嫌気性消化反応が進行する結果として生成し
たCH4ガスやCO2ガスによつて、消化菌が系外
に流出するというトラブルを解消する。 The purpose of the present invention is to provide a new methane fermentation device that solves the problems in the conventional fixed bed method and UASB method. Eliminates the problem of digestive bacteria leaking out of the system due to gas or CO 2 gas.
系内の消化菌濃度を最大限に高めることによ
つて、メタン発酵速度を顕著に向上させる。 By maximizing the concentration of digestive bacteria in the system, the rate of methane fermentation is significantly improved.
気泡の付着によつて浮上した消化菌をも、メ
タン発酵に利用できるようにする。 Digestive bacteria that float to the surface due to the adhesion of air bubbles can also be used for methane fermentation.
などの課題を解決し得る装置を提供しようとする
ものである。The aim is to provide a device that can solve these problems.
本考案は、下部にメタン発酵対象液の流入口２
を設け上端３を開口した塔体１内に、気泡の付着
により浮上するペレツト状嫌気性消化菌５を充填
し、塔体１の上端３を槽体４内で水面下に位置す
るように処理液流出部１０を有する槽体４内に配
備し、さらに槽体４内に塔体１の上端３部を囲ん
で消化ガス捕集室６を形成し、かつ塔体１との間
に下向流路７、槽体４外壁との間に上向流路８を
形成する隔壁９を設け、上向流路８を処理液流出
部１０に連通せしめたことを特徴とするメタン発
酵装置である。
This invention has an inlet 2 at the bottom for the liquid to be methane fermented.
A column body 1 with an open upper end 3 is filled with pellet-shaped anaerobic digestive bacteria 5 that float due to the adhesion of air bubbles, and treated so that the upper end 3 of the column body 1 is located below the water surface in a tank body 4. It is disposed in a tank body 4 having a liquid outflow portion 10, and a digestion gas collection chamber 6 is formed in the tank body 4 by surrounding the upper end of the tower body 1. This methane fermentation apparatus is characterized in that a partition wall 9 forming an upward flow path 8 is provided between the flow path 7 and the outer wall of the tank body 4, and the upward flow path 8 is communicated with a processing liquid outflow portion 10. .
本考案の実施例を図面を参照しながら説明する
と、第１図示例において、筒形の塔体１は下部に
メタン発酵の対象となる原液（各種有機性汚水
等）の流入口２が設けられており、上端３は開口
されて槽体４内の水面下に位置するように配備さ
れている。また、塔体１内には気泡の付着により
浮上するペレツト状嫌気性消化菌５が充填されて
いる。
An embodiment of the present invention will be described with reference to the drawings. In the first illustrated example, a cylindrical column body 1 is provided with an inlet 2 at the bottom for the raw solution (various organic sewage, etc.) to be subjected to methane fermentation. The upper end 3 is opened and placed below the water surface in the tank body 4. Further, the tower body 1 is filled with pellet-shaped anaerobic digestive bacteria 5 that float to the surface due to the adhesion of air bubbles.
気泡の付着により浮上するペレツト状嫌気性消
化菌５としては、嫌気性消化菌自身のペレツト形
成能を利用してペレツト状たらしめたもの、ある
いは高分子凝集剤などによつて嫌気性消化菌を造
粒したものが用いられる。また、有機高分子樹脂
のゲル内に嫌気性消化菌を包括固定化した粒子も
好ましく、ゲルの形成物質としてはゲル強度の大
きなポリアクリルアミド、ポリウレタンが適して
おり、特にポリウレタンはウレタンポリマーを嫌
気性消化菌のスラリーに添加することによつて、
極めて容易に嫌気性消化菌をポリウレタンゲル内
に包括固定化することができるので、最適であ
る。また、この粒状の固定化微生物のゲルの粒径
は１〜10mm程度が適している。 The pellet-shaped anaerobic digestive bacteria 5 that float to the surface due to the adhesion of air bubbles may be formed into pellets by utilizing the pellet-forming ability of the anaerobic digestive bacteria themselves, or anaerobic digestive bacteria may be formed into pellets by using a polymer flocculant or the like. A granulated product is used. Particles in which anaerobic digestive bacteria are encased and immobilized in a gel of organic polymer resin are also preferable, and polyacrylamide and polyurethane, which have high gel strength, are suitable as gel-forming substances. By adding it to the slurry of digestive bacteria,
This method is most suitable because it allows anaerobic digestion bacteria to be comprehensively immobilized within the polyurethane gel very easily. Further, the particle size of this granular immobilized microorganism gel is suitably about 1 to 10 mm.
さらに、槽体４には、塔体１の上端３の開口部
を囲み、消化ガス捕集室６を形成し、かつ塔体１
との間に下向流路７、槽体４外壁との間に上向流
路８を形成する隔壁９を設け、上向流路８は槽体
４に設けられた処理液流出部１０に連通されてい
る。 Further, the tank body 4 has a digestion gas collection chamber 6 surrounding the opening at the upper end 3 of the tower body 1, and
A partition wall 9 is provided between the tank body 4 and the outer wall of the tank body 4 to form a downward flow path 7 and an upward flow path 8 between the tank body 4 and the outer wall of the tank body 4. It is communicated.
なお、第１図示例においては、隔壁９を傾斜さ
せ、下向流路７及び上向流路８の下流側断面を拡
大させてあり、これは固液分離の向上の点からみ
て好ましいが、必ずしもその必要はない。 In the first illustrated example, the partition wall 9 is inclined and the downstream cross sections of the downward flow path 7 and the upward flow path 8 are enlarged, which is preferable from the viewpoint of improving solid-liquid separation. It's not necessarily necessary.
第１図中、１１は原液を供給するポンプ１２の
吐出側と塔体１の流入口２間の流入管、１３は処
理液流出部に連なる流出管、１４は消化ガス捕集
室６の排気管を示す。 In FIG. 1, 11 is an inflow pipe between the discharge side of the pump 12 that supplies the raw solution and the inlet 2 of the column body 1, 13 is an outflow pipe connected to the treated liquid outflow part, and 14 is an exhaust gas from the digestion gas collection chamber 6. Showing the tube.
次にその作用について説明すれば、メタン発酵
の対象となる原液は、ポンプ１２によつて流入管
１１を経て流入口２から塔体１内の下部に流入
し、塔体１内のペレツト状嫌気性消化菌５と接触
して酸発酵、メタン発酵が行われ、塔体１の上端
３から下向流路７を下向し、上向流路８にて上向
流に反転し、処理液流出部１０から流出管１３を
経て系外に流出してゆく。 Next, to explain its operation, the raw solution to be subjected to methane fermentation flows into the lower part of the column body 1 from the inlet port 2 via the inlet pipe 11 by the pump 12, and is converted into pellet-like anaerobic pellets in the column body 1. Acid fermentation and methane fermentation are carried out in contact with the digestive bacteria 5, and the treated liquid flows downward from the upper end 3 of the tower body 1 through the downward passage 7 and reverses to an upward flow in the upward passage 8. It flows out of the system from the outflow portion 10 through the outflow pipe 13.
この間、メタン発酵によりCH4ガス、CO2ガス
等が発生するが、これらのガスの一部はペレツト
状嫌気性消化菌５の内部や表面に滞留したり、付
着するので、その気泡の浮力によつてペレツト状
嫌気性消化菌５は浮上する。なお、塔体１内の下
方部に存在する粒子は、CH4ガス、CO2ガス等の
付着がなく、沈降状態を保つているものである。 During this time, CH 4 gas, CO 2 gas, etc. are generated due to methane fermentation, but some of these gases remain or adhere to the inside or surface of the pelleted anaerobic digestive bacteria 5, so the buoyancy of the bubbles As a result, the pelleted anaerobic digestive bacteria 5 float to the surface. Note that the particles existing in the lower part of the column body 1 are free from adhesion of CH 4 gas, CO 2 gas, etc., and maintain a sedimented state.
気泡によつて浮上したペレツト状嫌気性消化菌
５は、水面下に充填層の状態を形成し、消化ガス
捕集室６において下向流の流出速度とバランスを
保つて、流出することなく充填層もしくは流動層
を保持するから、原液はペレツト状嫌気消化菌５
と接触する十分なチヤンスが与えられ、効率のよ
いメタン発酵反応が進行する。なお、メタン発酵
の結果発生したCH4ガス、CO2ガスは消化ガス捕
集室６に捕集され、排気管１４から取り出されて
燃料として有効利用される。 The pelleted anaerobic digestive bacteria 5 floated to the surface by the air bubbles form a packed layer under the water surface, and are filled in the digestive gas collection chamber 6 without flowing out by keeping a balance with the downward flow rate. Because it maintains a bed or fluidized bed, the stock solution contains pelleted anaerobic bacteria5.
The methane fermentation reaction proceeds efficiently. Note that CH 4 gas and CO 2 gas generated as a result of methane fermentation are collected in the digestion gas collection chamber 6, taken out from the exhaust pipe 14, and effectively used as fuel.
また、第２図は本考案の他の実施例を示すもの
で、原液中にSSが多く含まれる場合に適してお
り、第１図示例と相違するところは、槽体４の下
部を傾斜壁にて縮小させ、その底部に排泥管１５
を設けた点である。なお、槽体４の底部は塔体１
の底部と共通たらしめることもできる。 In addition, FIG. 2 shows another embodiment of the present invention, which is suitable for cases where the stock solution contains a large amount of SS, and is different from the example shown in FIG. , and a mud drainage pipe 15 is installed at the bottom.
The point is that Note that the bottom of the tank body 4 is the tower body 1.
It can also be made to be common to the bottom of.
即ち、SSの多い原液の場合には、メタン発酵
が進行し、下向流路７から分離される液中のSS
は槽体４の底部に沈殿するから、これを排泥管１
５から容易に排出することができる。 That is, in the case of a stock solution with a large amount of SS, methane fermentation progresses, and the SS in the liquid separated from the downward flow path 7
is deposited at the bottom of the tank body 4, so it is removed from the sludge pipe 1.
5 can be easily discharged.
また、SSの多い原液の場合には、消化ガス捕
集室６内の水面にスカムが形成されやすく、処理
の障害となることが多いため、これを防止するた
めに撹拌機などのスカム破砕機１６を配備するの
が好ましい。 In addition, in the case of a stock solution with a large amount of SS, scum is likely to form on the water surface in the digestion gas collection chamber 6, which often becomes a hindrance to processing. Preferably, 16 are provided.
以上述べたように、本考案によれば、メタン発
酵の結果生成されるCH4ガス、CO2ガス等の付着
による消化菌の系外流出を防ぎ、安定した運転が
可能であり、しかも気泡の付着によつて浮上した
消化菌の安定した充填層もしくは流動層を形成さ
せることができ、原液と消化菌との接触機会を十
分に与え、しかもその消化菌濃度は最大限に保持
されており、メタン発酵速度を極めて向上させる
ことができる等の極めて有益なる効果を期待する
ことができる。
As described above, according to the present invention, it is possible to prevent digestive bacteria from flowing out of the system due to adhesion of CH 4 gas, CO 2 gas, etc. produced as a result of methane fermentation, to enable stable operation, and to eliminate air bubbles. It is possible to form a stable packed bed or fluidized bed of the digestive bacteria floating on the surface by adhesion, providing sufficient opportunities for contact between the undiluted solution and the digestive bacteria, and maintaining the maximum concentration of the digestive bacteria. Extremely beneficial effects such as the ability to significantly improve the methane fermentation rate can be expected.
第１図及び第２図は、それぞれ本考案の実施例
を示す縦断面図である。
１……塔体、２……流入口、３……上端、４…
…槽体、５……ペレツト状嫌気性消化菌、６……
消化ガス捕集室、７……下向流路、８……上向流
路、９……隔壁、１０……処理液流出部、１１…
…流入管、１２……ポンプ、１３……流出管、１
４……排気管、１５……排泥管、１６……スカム
破砕機。
1 and 2 are longitudinal cross-sectional views showing embodiments of the present invention, respectively. 1...Tower body, 2...Inlet, 3...Top end, 4...
... Tank body, 5 ... Pellet-shaped anaerobic digestive bacteria, 6 ...
Digestion gas collection chamber, 7... Downward channel, 8... Upward channel, 9... Partition wall, 10... Processing liquid outflow section, 11...
...Inflow pipe, 12...Pump, 13...Outflow pipe, 1
4...Exhaust pipe, 15...Sludge removal pipe, 16...Scum crusher.
Claims (1)
端３を開口した塔体１内に、気泡の付着により
浮上するペレツト状嫌気性消化菌５を充填し、
塔体１の上端３を槽体４内で水面下に位置する
ように処理液流出部１０を有する槽体４内に配
備し、さらに槽体４内に塔体１の上端３部を囲
んで消化ガス捕集室６を形成し、かつ塔体１と
の間に下向流路７、槽体４外壁との間に上向流
路８を形成する隔壁９を設け、上向流路８を処
理液流出部１０に連通せしめたことを特徴とす
るメタン発酵装置。 ２ 前記ペレツト状嫌気性消化菌５として嫌気性
消化菌を有機高分子の粒状ゲル内に包括固定化
した粒子を使用するものである実用新案登録請
求の範囲第１項記載のメタン発酵装置。 ３ 前記槽体４の下部を傾斜壁にて縮小させ、そ
の底部に排泥管１５を設けたものである実用新
案登録請求の範囲第１項又は第２項記載のメタ
ン発酵装置。 ４ 前記下向流路７及び上向流路８の少なくとも
一方の下流側断面を拡大させたものである実用
新案登録請求の範囲第１項〜第３項のいずれか
一つの項記載のメタン発酵装置。 ５ 前記消化ガス捕集室にスカム破砕機が配備さ
れているものである実用新案登録請求の範囲第
１項〜第４項のいずれか一つの項記載のメタン
発酵装置。[Claims for Utility Model Registration] 1. A column body 1 with an inlet 2 for a liquid to be methane fermented at the bottom and an open upper end 3 is filled with pellet-shaped anaerobic digestive bacteria 5 that float to the surface due to the adhesion of air bubbles,
The upper end 3 of the tower body 1 is placed in a tank body 4 having a treatment liquid outflow portion 10 so that the upper end 3 of the tower body 1 is located below the water surface within the tank body 4, and further, the upper end 3 of the tower body 1 is surrounded within the tank body 4. A partition wall 9 is provided which forms a digestion gas collection chamber 6 and forms a downward flow path 7 between the tower body 1 and an upward flow path 8 between the outer wall of the tank body 4. A methane fermentation device characterized in that a methane fermentation device is connected to a processing liquid outflow portion 10. 2. The methane fermentation apparatus according to claim 1, wherein particles of anaerobic digestive bacteria entrapping and immobilized in a granular organic polymer gel are used as the pelleted anaerobic digestive bacteria 5. 3. The methane fermentation apparatus according to claim 1 or 2, wherein the lower part of the tank body 4 is reduced by an inclined wall, and a sludge drain pipe 15 is provided at the bottom of the tank body 4. 4. Methane fermentation according to any one of claims 1 to 3, which is an enlarged downstream cross section of at least one of the downward flow path 7 and the upward flow path 8. Device. 5. The methane fermentation apparatus according to any one of claims 1 to 4, wherein a scum crusher is provided in the digestion gas collection chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8747585U JPH039837Y2 (en) | 1985-06-12 | 1985-06-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8747585U JPH039837Y2 (en) | 1985-06-12 | 1985-06-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61204700U JPS61204700U (en) | 1986-12-23 |
| JPH039837Y2 true JPH039837Y2 (en) | 1991-03-12 |
Family
ID=30639725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8747585U Expired JPH039837Y2 (en) | 1985-06-12 | 1985-06-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH039837Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NZ226453A (en) * | 1987-10-08 | 1990-04-26 | Gist Brocades Nv | Anaerobic purification of waste water using granular sludge in fluidised bed process |
| JP2006051490A (en) * | 2004-01-15 | 2006-02-23 | Sumitomo Heavy Ind Ltd | Anaerobic treatment apparatus and method |
| CN101098831B (en) * | 2005-01-11 | 2010-05-12 | 住友重机械工业株式会社 | Anaerobic treatment apparatus and method |
-
1985
- 1985-06-12 JP JP8747585U patent/JPH039837Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61204700U (en) | 1986-12-23 |
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