JPS62168598A - Methane fermenting device - Google Patents
Methane fermenting deviceInfo
- Publication number
- JPS62168598A JPS62168598A JP61007586A JP758686A JPS62168598A JP S62168598 A JPS62168598 A JP S62168598A JP 61007586 A JP61007586 A JP 61007586A JP 758686 A JP758686 A JP 758686A JP S62168598 A JPS62168598 A JP S62168598A
- Authority
- JP
- Japan
- Prior art keywords
- methane
- tank
- liquid
- treated
- membrane
- 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
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 241000894006 Bacteria Species 0.000 claims abstract description 15
- 238000000855 fermentation Methods 0.000 claims abstract description 14
- 230000004151 fermentation Effects 0.000 claims abstract description 14
- 239000000126 substance Substances 0.000 claims abstract description 5
- 239000000463 material Substances 0.000 claims description 5
- 239000011344 liquid material Substances 0.000 claims description 2
- 239000011368 organic material Substances 0.000 claims 1
- 239000012528 membrane Substances 0.000 abstract description 54
- 239000007788 liquid Substances 0.000 abstract description 24
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 10
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 5
- 239000001569 carbon dioxide Substances 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 3
- 238000003860 storage Methods 0.000 abstract description 2
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000000926 separation method Methods 0.000 description 13
- 238000001914 filtration Methods 0.000 description 6
- 239000007787 solid Substances 0.000 description 5
- 239000012466 permeate Substances 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- 238000005273 aeration Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012510 hollow fiber Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000035755 proliferation Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002351 wastewater 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
- 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
- Separation Using Semi-Permeable Membranes (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Treatment Of Sludge (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明はメタン発酵装置に係り、特に有機性物質を含
む液状の被処理物、例えば有機性廃水、スラリー状汚泥
などをメタン発酵菌と接触させ、メタン発酵するだめの
メタン発酵装置に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a methane fermentation device, and in particular, the present invention relates to a methane fermentation device, in which a liquid material to be treated containing an organic substance, such as organic wastewater or slurry sludge, is brought into contact with methane-fermenting bacteria. The present invention relates to a methane fermentation device for methane fermentation.
従来のメタン発酵装置は、メタン発酵を行う発酵槽と、
この発酵槽で処理を受けた被処理物を固液分離するため
の固液分離手段とが別々に配設される。しかしこのよう
な構成にあっては、発酵槽内で増殖したメタン発酵菌が
被処理物とともに発酵槽外に流出するため、発酵槽にお
けるメタン発酵菌の濃度が低くなり、反応速度が低下す
る欠点の濃度を一定値以上に維持することも試みられて
いる。しかしその返送量の調節が難しく安定な操作を維
持できないという問題が生じていた。また、固液分離手
段を別置することによって、装置の所要敷地面積が太き
（なり、装置の構成も複雑となるので、建設費や運動費
が太き（なるという欠点があった。Conventional methane fermentation equipment consists of a fermenter that performs methane fermentation,
Solid-liquid separation means for separating solid-liquid from the processed material in the fermenter is separately provided. However, this configuration has the disadvantage that the methane-fermenting bacteria grown in the fermenter flow out of the fermenter together with the material to be treated, which lowers the concentration of methane-fermenting bacteria in the fermenter and slows down the reaction rate. Attempts have also been made to maintain the concentration of carbon dioxide above a certain value. However, a problem has arisen in that it is difficult to adjust the amount of return and stable operation cannot be maintained. In addition, by providing the solid-liquid separation means separately, the required site area for the device becomes large, and the structure of the device also becomes complicated, which has the disadvantage of increasing construction and movement costs.
上記、従来技術の欠点を改善するために、例えば発酵槽
内に、ろ過膜を備えた固液分離手段を内設し、この固液
分離手段で分離した透過液を槽外へ排出することも考え
られる。しかしながら、このような方法では、ろ過膜の
膜面に被処理物中の固形分やメタン発酵菌が付着堆積し
て、ろ過機能を長期間維持することが困−唯であり、実
用に供し得ないという欠点があった。In order to improve the above-mentioned drawbacks of the conventional technology, it is also possible to install a solid-liquid separation means equipped with a filtration membrane inside the fermenter, and discharge the permeate separated by this solid-liquid separation means to the outside of the tank. Conceivable. However, in such a method, solid content in the material to be treated and methane-fermenting bacteria adhere and accumulate on the membrane surface of the filtration membrane, making it difficult to maintain the filtration function for a long period of time, making it impractical. There was a drawback that there was no
この発明の目的は、前記従来技術の欠点を解消〔問題点
を解決するだめの手段〕
上記の問題点を解決するために、この発明の装置は、発
酵槽に移動膜面を備えだ膜分離手段を配設し、この膜分
離手段で分離した透過液を槽外へ排出するようにしたこ
とを特徴とする。移動膜面とは、膜分離手段における膜
面が槽内で実質的に移動する膜面を意味する。膜として
はメタン発酵菌を透過させない程度のろ過膜であればよ
（、ＵＦ膜や逆浸透膜を含む。An object of the present invention is to eliminate the drawbacks of the prior art described above (means for solving the problem). The present invention is characterized in that a means is provided, and the permeate separated by the membrane separation means is discharged to the outside of the tank. The moving membrane surface means a membrane surface in which the membrane surface of the membrane separation means substantially moves within the tank. The membrane may be any filtration membrane that does not allow methane-fermenting bacteria to pass through (including UF membranes and reverse osmosis membranes).
発酵槽内に膜分離手段を内股したので、装置のコンパク
ト化を図ることができ、敷地面積を多く必要としない。Since the membrane separation means is housed inside the fermenter, the device can be made more compact and does not require a large site area.
膜分離手段で分離した透過液にはメタン発酵菌が同伴し
ないため、発酵槽におけるメタン発酵菌の濃度を容易に
高く維持できる。膜分離手段の膜面は槽内に移動するの
で、膜面には被処理物との間に相対的な剪断力が作用し
、膜面〔実 施 例〕
本発明の実施例を第１図、第２図に示す。Since the permeate separated by the membrane separation means does not contain methane-fermenting bacteria, the concentration of methane-fermenting bacteria in the fermenter can be easily maintained at a high level. As the membrane surface of the membrane separation means moves into the tank, a relative shearing force acts on the membrane surface and the object to be treated. , shown in FIG.
発酵槽１０は中央部に上下端が開放したドラフト管１２
を備え、このドラフト管１２内に被処理液の導入管路１
４が開口している。槽１０内のドラフト管１２の外側に
は整流板１６を備え、整流板１６の下方には回転平膜１
８が配置される。ドラフト管１２の上部には攪拌ポンプ
２０を備える。The fermenter 10 has a draft pipe 12 in the center with open upper and lower ends.
In this draft pipe 12, there is an introduction pipe line 1 for introducing the liquid to be treated.
4 is open. A rectifying plate 16 is provided on the outside of the draft pipe 12 in the tank 10, and a rotating flat membrane 1 is provided below the rectifying plate 16.
8 is placed. A stirring pump 20 is provided at the upper part of the draft pipe 12.
回転平膜１８は第２図に示すように、中空回転軸２２に
円盤状の平膜２４を多数枚並列して取付けたものであり
、中空回転軸２２を中心に回転する。As shown in FIG. 2, the rotating flat membrane 18 is constructed by attaching a large number of disc-shaped flat membranes 24 in parallel to a hollow rotating shaft 22, and rotates around the hollow rotating shaft 22.
この回転によって、平膜２４の膜面は槽内を実質的に移
動することになる。平膜２４の外側膜面を透過した透過
液２６は前記中空回転軸２２の中空部に集められ、槽外
に排出される。Due to this rotation, the membrane surface of the flat membrane 24 substantially moves within the tank. The permeated liquid 26 that has passed through the outer membrane surface of the flat membrane 24 is collected in the hollow part of the hollow rotating shaft 22 and discharged to the outside of the tank.
上記の構成において、管路１４からドラフト管１２内に
導入された被処理液は、攪拌ポンプ２０する。この循環
の過程で、被処理液を栄養源として増殖し、被処理液中
に浮遊するメタン発酵菌の作用によって、被処理液中の
有機性物質は分解し、主としてメタン、炭酸ガス、水を
生成する。このため、被処理液中のＢＯＤ成分は低下す
る。発生したメタン、炭酸ガス（以外、代表、してメタ
ンという。）は槽上部に設けた管路２８から抜き出し、
ガス貯槽３０に回収する。回収したメタンの一部は管路
３２かも取り出し、ブロワ３４によって昇圧したのち、
前記回転平膜１８の下方から散気する。このメタンの散
気は回転平膜１８の膜面にメタンの気泡を衝突させて、
膜面の浄化を図るとともに、槽１０内を嫌気条件に維持
する目的で行う。In the above configuration, the liquid to be treated introduced into the draft pipe 12 from the pipe line 14 is fed to the stirring pump 20 . During this cycle, the organic substances in the liquid are decomposed by the action of methane-fermenting bacteria, which grow using the liquid as a nutrient source and are suspended in the liquid, producing mainly methane, carbon dioxide, and water. generate. Therefore, the BOD component in the liquid to be treated decreases. The generated methane and carbon dioxide gas (other than that, representatively referred to as methane) is extracted from the pipe 28 installed at the top of the tank.
The gas is collected in the gas storage tank 30. A part of the recovered methane is also taken out from the pipe line 32, and after being pressurized by the blower 34,
Air is diffused from below the rotating flat membrane 18. This methane aeration causes methane bubbles to collide with the membrane surface of the rotating flat membrane 18,
This is done for the purpose of purifying the membrane surface and maintaining the inside of the tank 10 under anaerobic conditions.
一方、メタン発酵によってＢＯＤ成分が低下した被処理
液は、回転平膜Ｉ８の膜面を透過して、前記中空回転軸
２２の中空部から管路３６を経て槽外に排出される。こ
の回転平膜１８は被処理液中の固形分やメタン発酵菌は
透過させないので、槽内におけるメタン発酵菌の濃度を
高い値に維持できる。したがって、メタン発酵処理が効
率よく進行する。被処理液中の固形分や増殖によって余
剰となったメタン発酵菌は槽下部から抜き出し、管路３
８を経て槽外へ排出する。On the other hand, the liquid to be treated whose BOD component has been reduced by methane fermentation passes through the membrane surface of the rotating flat membrane I8 and is discharged from the hollow part of the hollow rotating shaft 22 to the outside of the tank via the pipe 36. This rotary flat membrane 18 does not allow the solid content in the liquid to be treated or the methane-fermenting bacteria to pass through, so that the concentration of the methane-fermenting bacteria in the tank can be maintained at a high value. Therefore, the methane fermentation process progresses efficiently. The solid content in the liquid to be treated and the excess methane-fermenting bacteria due to proliferation are extracted from the bottom of the tank and transferred to pipe 3.
8 and then discharged to the outside of the tank.
回転平膜１８は継続的に回転しているので、被処理液と
膜面との間に剪断力が作用し、膜面の浄化が行われる。Since the rotating flat membrane 18 is continuously rotating, a shearing force acts between the liquid to be treated and the membrane surface, thereby cleaning the membrane surface.
図示のように複数の回転モジュールを交叉させるように
すれば、前記剪断力の作用や、被処理液の攪拌をより一
層効蓑的にする。さらに前記のように、メタンの散気に
よっても膜面の浄化を補助する。このため、膜面に固形
分やメタン発酵附が付着堆積することを防止でき、ろ過
機能を長期間にわたって維持できる。本実施例における
回転平膜１８の膜分離のだめの駆動力は発酵槽１０内に
おける被処理液の水頭に依存している。したがって、回
転平膜のろ過機能を有効にするためには回転平膜をなる
べく槽の下方側に配置ばメタンを加圧封入して、この圧
力によって水頭の不足分を補うようにしてもよい。この
方法によれば、圧力を調節することによって、透過水量
を任意に制御することが容易となる。By intersecting a plurality of rotating modules as shown in the figure, the action of the shearing force and the stirring of the liquid to be treated are made even more effective. Furthermore, as mentioned above, purification of the membrane surface is also assisted by aeration of methane. Therefore, it is possible to prevent solid content and methane fermentation substances from adhering and accumulating on the membrane surface, and the filtration function can be maintained for a long period of time. In this embodiment, the driving force of the rotary flat membrane 18 for membrane separation depends on the water head of the liquid to be treated in the fermenter 10. Therefore, in order to make the filtration function of the rotary flat membrane effective, the rotary flat membrane may be placed as far down as possible in the tank, and methane may be sealed under pressure, and this pressure may be used to compensate for the lack of water head. According to this method, by adjusting the pressure, it becomes easy to arbitrarily control the amount of permeated water.
前記実施例においては、膜分離手段として回転平膜１８
を用いたが、これに限るものではなく、膜面が実質的に
槽内を移動するものであればよい。In the above embodiment, the rotating flat membrane 18 is used as the membrane separation means.
was used, but it is not limited to this, and any membrane surface that substantially moves within the tank may be used.
例えば、中空糸を用いた膜モジュールを槽内で縦横方向
に移動させるものでもよい。For example, a membrane module using hollow fibers may be moved vertically and horizontally within the tank.
この発明は発酵槽内に移動膜面を備えた膜分離手段を配
設したので、装置をコンパクトにすることができ、かつ
、発酵槽におけるメタン発酵菌の濃度を容易に高（維持
できる。また、膜分離手段の膜面における固形分の異常
な付着堆積を防止できる。このため、メタン発酵処理を
効率よ（、安定して行うことができる。In this invention, since a membrane separation means having a moving membrane surface is disposed in the fermenter, the device can be made compact, and the concentration of methane-fermenting bacteria in the fermenter can be easily maintained at a high level. It is possible to prevent abnormal adhesion and accumulation of solid content on the membrane surface of the membrane separation means.Therefore, methane fermentation treatment can be carried out efficiently (and stably).
２図は上記実施例に係る回転平膜の要部構成を示す斜視
図である。FIG. 2 is a perspective view showing the main part structure of the rotary flat membrane according to the above embodiment.
１０・・・発酵槽、 １４・・・被処理液の導入
管路１８・・・回転平膜。DESCRIPTION OF SYMBOLS 10...Fermentation tank, 14...Introduction pipe line for the liquid to be treated 18...Rotating flat membrane.
第１図 ｔｏ−−−４Ｆａｆ檜 １８−−一回Φス平胤Figure 1 to---4Faf Hinoki 18--Once Φ Suhiratane
Claims (1)
被処理物とあらかじめ槽内で増殖させたメタン発酵菌と
を接触させ、前記被処理物中の有機性物質をメタン発酵
菌の作用によって分解し、メタンを発生させるメタン発
酵装置において、前記槽内に移動膜面を備えた膜分離手
段を配設し、この膜分離手段で分離した透過液を槽外へ
排出するようにしたことを特徴とするメタン発酵装置。A liquid material to be treated containing an organic substance is introduced into a tank, and the material to be treated is brought into contact with methane-fermenting bacteria that has been grown in the tank in advance, so that the organic material in the material to be treated is transferred to the methane-fermenting bacteria. In a methane fermentation device that decomposes and generates methane by the action of A methane fermentation device that is characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61007586A JPS62168598A (en) | 1986-01-17 | 1986-01-17 | Methane fermenting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61007586A JPS62168598A (en) | 1986-01-17 | 1986-01-17 | Methane fermenting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62168598A true JPS62168598A (en) | 1987-07-24 |
| JPH0366959B2 JPH0366959B2 (en) | 1991-10-21 |
Family
ID=11669914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61007586A Granted JPS62168598A (en) | 1986-01-17 | 1986-01-17 | Methane fermenting device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62168598A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01119398A (en) * | 1987-10-30 | 1989-05-11 | Akua Runesansu Gijutsu Kenkyu Kumiai | Water treatment equipment |
| JPH01119397A (en) * | 1987-10-30 | 1989-05-11 | Akua Runesansu Gijutsu Kenkyu Kumiai | Water treatment equipment |
| KR100479411B1 (en) * | 2002-07-26 | 2005-03-30 | 박석균 | Anaerobic Rotary Reactor |
| KR100827351B1 (en) | 2006-12-29 | 2008-05-06 | 한국과학기술연구원 | Biologic production method of methane from carbon dioxide using anaerobic biofilm and apparatus using the same |
| WO2011013655A1 (en) * | 2009-07-31 | 2011-02-03 | Kobayashi Yoshio | Water-withdrawal type methane fermentation method |
| JP2012206053A (en) * | 2011-03-30 | 2012-10-25 | Kubota Corp | Wastewater treatment method and wastewater treatment system |
-
1986
- 1986-01-17 JP JP61007586A patent/JPS62168598A/en active Granted
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01119398A (en) * | 1987-10-30 | 1989-05-11 | Akua Runesansu Gijutsu Kenkyu Kumiai | Water treatment equipment |
| JPH01119397A (en) * | 1987-10-30 | 1989-05-11 | Akua Runesansu Gijutsu Kenkyu Kumiai | Water treatment equipment |
| KR100479411B1 (en) * | 2002-07-26 | 2005-03-30 | 박석균 | Anaerobic Rotary Reactor |
| KR100827351B1 (en) | 2006-12-29 | 2008-05-06 | 한국과학기술연구원 | Biologic production method of methane from carbon dioxide using anaerobic biofilm and apparatus using the same |
| WO2011013655A1 (en) * | 2009-07-31 | 2011-02-03 | Kobayashi Yoshio | Water-withdrawal type methane fermentation method |
| JP4768881B2 (en) * | 2009-07-31 | 2011-09-07 | 義雄 小林 | Dehydrated methane fermentation |
| JPWO2011013655A1 (en) * | 2009-07-31 | 2013-01-07 | 小林 義雄 | Dehydrated methane fermentation |
| JP2012206053A (en) * | 2011-03-30 | 2012-10-25 | Kubota Corp | Wastewater treatment method and wastewater treatment system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0366959B2 (en) | 1991-10-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |