JPH0422637B2 - - Google Patents
Info
- Publication number
- JPH0422637B2 JPH0422637B2 JP9112384A JP9112384A JPH0422637B2 JP H0422637 B2 JPH0422637 B2 JP H0422637B2 JP 9112384 A JP9112384 A JP 9112384A JP 9112384 A JP9112384 A JP 9112384A JP H0422637 B2 JPH0422637 B2 JP H0422637B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- section
- digestion tank
- solid
- partition plate
- 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 - Lifetime
Links
- 239000007788 liquid Substances 0.000 claims description 95
- 230000029087 digestion Effects 0.000 claims description 49
- 238000000926 separation method Methods 0.000 claims description 39
- 239000010802 sludge Substances 0.000 claims description 39
- 238000005192 partition Methods 0.000 claims description 27
- 230000000630 rising effect Effects 0.000 claims description 10
- 239000011550 stock solution Substances 0.000 description 7
- 230000001174 ascending effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- 235000005985 organic acids Nutrition 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000001079 digestive effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000010800 human waste Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000479 mixture part Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 241001148471 unidentified anaerobic bacterium Species 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
【発明の詳細な説明】
〔発明の技術分野〕
この発明は水処理等に使用される嫌気性消化
槽、特にスラツジブランケツト型の嫌気性消化槽
に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an anaerobic digestion tank used for water treatment etc., and particularly to a sludge blanket type anaerobic digestion tank.
スラツジブランケツト型の嫌気性消化槽は、嫌
気性細菌を主体とする汚泥にスラツジブランケツ
トを形成し、廃液と接触させて嫌気性消化を行う
ものであるが、消化により発生するガスが上昇し
てスラツジブランケツトが乱れ、固液分離が行え
なくなるので、消化反応部と固液分離部とを区画
することが行われる。このような消化槽として、
45°の勾配の仕切板により、断面逆三角形状に固
液分離部を区画するものがあるが（USPNo.
4253956）、この装置では固液分離部の汚泥は自然
沈降により消化反応部に流入するため、汚泥の性
状が悪化し、沈降性が不良となつた場合、汚泥の
返送が不十分となり、沈澱部で汚泥の堆積やスカ
ムが発生し、設定負荷どおりの運転ができないと
いう問題点があつた。
A sludge blanket-type anaerobic digestion tank forms a sludge blanket in sludge mainly composed of anaerobic bacteria and brings it into contact with waste liquid to perform anaerobic digestion. As the sludge blanket rises, the sludge blanket becomes disturbed and solid-liquid separation becomes impossible, so the digestion reaction section and the solid-liquid separation section are separated. As such a digestive tank,
There is a partition plate with a 45° slope that divides the solid-liquid separation section into an inverted triangular cross section (USP No.
4253956), in this equipment, the sludge in the solid-liquid separation section flows into the digestion reaction section by natural settling, so if the properties of the sludge deteriorate and the settling properties become poor, the sludge will not be returned sufficiently, and the settling section However, there was a problem that sludge accumulation and scum occurred, making it impossible to operate at the set load.
この発明は、上記問題点を解決するためのもの
で、消化槽の上部に２つの仕切板を設けて、上昇
部および下降部からなる混合液部と固液分離部に
区画するとともに、固液分離部の下部から混合液
部に伸びる整流板を設けることにより、発生ガス
の固液分離部への流入を防ぐとともに、発生ガス
による旋回流を利用して固液分離部の沈降汚泥を
消化反応部へ返送し、小設置面積で効率的な嫌気
性消化を行うことが可能な嫌気性消化槽を提供す
ることを目的としている。
This invention is intended to solve the above-mentioned problems. Two partition plates are provided at the top of the digester to divide the tank into a mixed liquid section and a solid-liquid separation section consisting of an ascending section and a descending section. By providing a rectifying plate that extends from the bottom of the separation section to the mixed liquid section, it is possible to prevent the generated gas from flowing into the solid-liquid separation section, and to use the swirling flow of the generated gas to digest the settled sludge in the solid-liquid separation section. The purpose of this project is to provide an anaerobic digestion tank that can be returned to the department and perform efficient anaerobic digestion in a small footprint.
この発明は、底部に原液流入部を有する消化槽
と、この消化槽の液面上から液中に伸びかつ消化
槽上部を固液分離部および密閉形の混合液部に区
画する第１の仕切板と、固液分離部の上部に連絡
する処理液管と、混合液部の上部に連絡するガス
排出管と、上端が混合液部の液面下に位置し下部
が第１の仕切板の先端と間隔を保つた下向きの傾
斜部となつて固液分離部の下部まで伸びかつ混合
液部を上昇部および下降部に区画する第２の仕切
板と、第２の仕切板と交差する方向に下向きに傾
斜しかつ第２の仕切板の下端と間隔を保つて固液
分離部の下部から混合液部に伸びる整流板とを備
えたことを特徴とする嫌気性消化槽である。
The present invention provides a digestion tank having a raw liquid inflow section at the bottom, and a first partition extending from above the liquid surface of the digestion tank into the liquid and partitioning the upper part of the digestion tank into a solid-liquid separation section and a closed mixed liquid section. A plate, a processing liquid pipe communicating with the upper part of the solid-liquid separation part, a gas discharge pipe communicating with the upper part of the mixed liquid part, and a top end located below the liquid level of the mixed liquid part and a lower part of the first partition plate. a second partition plate that forms a downwardly inclined part keeping a distance from the tip and extends to the bottom of the solid-liquid separation part and divides the mixed liquid part into an ascending part and a descending part; and a direction intersecting the second partition plate. The anaerobic digestion tank is characterized in that it is equipped with a rectifier plate which is inclined downward and extends from the lower part of the solid-liquid separation part to the mixed liquid part while keeping a distance from the lower end of the second partition plate.
以下、この発明を図面の実施例により説明す
る。
Hereinafter, the present invention will be explained with reference to embodiments of the drawings.
図面はこの発明の一実施例による嫌気性消化槽
の垂直断面図である。図面において、１は直方体
状の容器からなる消化槽で、底面の全域に多孔管
状の原液流入部２が均一に設けられている。消化
槽１の上部には液面上から液中に伸びる第１の仕
切板３が設けられ、この仕切板３により消化槽１
の上部は密閉形の混合液部４および開放形の固液
分離部５に区画されている。混合液部４の液面下
には第２の仕切板６が設けられ、その下部は下向
きの傾斜部６ａとなり、仕切板３の下端と間隔を
保つて、その下端は固液分離部５の下部まで伸び
ている。この仕切板６により混合液部４は上昇部
７および下降部８に区画されている。傾斜部６ａ
の傾斜角αは45°以上とされ、第１および第２の
仕切板３，６下部における開口部９の断面積は上
昇部７の断面積より大きくされている。 The drawing is a vertical sectional view of an anaerobic digestion tank according to an embodiment of the present invention. In the drawings, reference numeral 1 denotes a digestion tank consisting of a rectangular parallelepiped-shaped container, and porous tubular stock solution inflow portions 2 are uniformly provided over the entire bottom surface. A first partition plate 3 extending from above the liquid level into the liquid is provided at the top of the digestion tank 1, and this partition plate 3 allows the digestion tank 1 to be
The upper part is divided into a closed mixed liquid section 4 and an open solid-liquid separation section 5. A second partition plate 6 is provided below the liquid level of the mixed liquid part 4, and its lower part becomes a downwardly inclined part 6a, keeping a distance from the lower end of the partition plate 3. It extends to the bottom. The mixed liquid section 4 is divided into an ascending section 7 and a descending section 8 by the partition plate 6 . Inclined part 6a
The inclination angle α is 45° or more, and the cross-sectional area of the opening 9 at the lower part of the first and second partition plates 3 and 6 is larger than the cross-sectional area of the rising portion 7.
固液分離部５の下部には、消化槽１の一方の側
壁１ａから、仕切板６の傾斜部６ａと交差する方
向に下向きに傾斜した整流板１０が、仕切板６の
下端と間隔を保つて混合液部４に伸びている。整
流板１０の傾斜角βは45°以上とされ、仕切板６
との間の開口部１１は上昇部７の断面積より大き
くされている。整流板１０の下部は逆方向に傾斜
した傾斜部１０ａとなつて側壁１ａに伸び、その
下側に消化部１２が形成されている。 In the lower part of the solid-liquid separation section 5, a rectifying plate 10 inclined downward from one side wall 1a of the digestion tank 1 in a direction intersecting the inclined part 6a of the partition plate 6 maintains a distance from the lower end of the partition plate 6. and extends to the mixed liquid section 4. The inclination angle β of the current plate 10 is 45° or more, and the partition plate 6
The opening 11 between the opening 11 and the opening 11 is made larger than the cross-sectional area of the rising part 7. The lower part of the current plate 10 forms an inclined part 10a that is inclined in the opposite direction and extends to the side wall 1a, and a digester part 12 is formed below the inclined part 10a.
上昇部７および下降部８からなる混合液部４な
らびに消化部１２の全体が消化反応部を構成して
いる。１３は原液流入部２に連絡する原液管、１
４は固液分離部５の上部に連絡する処理液管、１
５は混合液部４の上部に連絡するガス排出管、１
６は消化槽１の底部に設けられた排泥ピツト、１
７は排泥管である。 The entire mixed liquid section 4 consisting of the rising section 7 and the descending section 8 and the digestion section 12 constitute a digestion reaction section. 13 is a stock solution pipe connected to the stock solution inflow section 2;
4 is a processing liquid pipe connected to the upper part of the solid-liquid separation section 5;
5 is a gas discharge pipe connected to the upper part of the mixed liquid section 4;
6 is a sludge pit provided at the bottom of the digestion tank 1;
7 is a mud removal pipe.
以上の構成において、原液管１３から原液を供
給し、原液流入部２から消化槽１内に流入させ、
嫌気性消化を行うと、原液は消化部１２において
汚泥と混合され、主として酸生成菌の作用で有機
物が分解して有機酸を生成し、さらに、メタン生
成菌の作用により有機酸が分解してメタンが生成
する。 In the above configuration, the stock solution is supplied from the stock solution pipe 13 and allowed to flow into the digestion tank 1 from the stock solution inflow section 2,
When anaerobic digestion is performed, the raw solution is mixed with sludge in the digestion section 12, and organic matter is decomposed mainly by the action of acid-producing bacteria to produce organic acids, and further, the organic acids are decomposed by the action of methanogens. Methane is produced.
混合液部４では発生するガスの浮力により、混
合液すなわち嫌気処理を受けた処理液は上昇部７
を上昇し、その上部でガスを分離する。ガスを分
離した混合液は下降部８を下降して固液分離部５
の下部に入り、一部は固液分離部５を上昇する
が、大部分は固液分離部５の沈降汚泥とともに、
固液分離部５の下部から整流板１０に沿つて下降
し、混合液部４に循環する。混合液部４から消化
部１２への汚泥の場合は、整流板１０の先端部が
上昇部７の断面積より大きいので流速が小さく、
したがつて開口部１１から循環する汚泥は、消化
部１２を必要以上に撹乱することはないので、消
化部１２内のスラツジブランケツト面を安定して
維持することができる。 In the mixed liquid section 4, due to the buoyancy of the gas generated, the mixed liquid, that is, the treated liquid that has undergone anaerobic treatment, rises to the rising section 7.
rises and separates the gas at the top. The mixed liquid from which the gas has been separated descends through the descending section 8 and passes through the solid-liquid separation section 5.
Some of the sludge enters the lower part of the solid-liquid separation section 5, but most of it goes up the solid-liquid separation section 5 together with the settled sludge.
It descends from the lower part of the solid-liquid separation section 5 along the rectifying plate 10 and circulates to the mixed liquid section 4. In the case of sludge flowing from the mixed liquid section 4 to the digestion section 12, the tip of the rectifying plate 10 is larger than the cross-sectional area of the rising section 7, so the flow velocity is small;
Therefore, the sludge circulating from the opening 11 does not disturb the digestion section 12 more than necessary, so that the sludge blanket surface within the digestion section 12 can be maintained stably.
また、固液分離部５にも混合液に同伴された汚
泥によつてスラツジブランケツト５ａが形成さ
れ、下降部８から一部ずつ流入する混合液がスラ
ツジブランケツト５ａを上昇する間に汚泥固形分
がスラツジブランケツト５ａに捕捉され、分離液
が処理液として処理液管１４から取出される。開
口部９の断面積が上昇部７の断面積より大きい場
合、スラツジブランケツト５ａの乱れは少なく、
固液分離性は向上する。スラツジブランケツト５
ａは一部が返送して汚泥として、混合液とともに
開口部１１から混合液部４に流入する。固液分離
部５に傾斜板１８を設けると、固液分離効果は高
くなる。 Furthermore, a sludge blanket 5a is also formed in the solid-liquid separation section 5 by the sludge entrained in the mixed liquid, and while the mixed liquid flowing in portions from the descending section 8 ascends the sludge blanket 5a. The sludge solids are captured in the sludge blanket 5a, and the separated liquid is taken out from the treatment liquid pipe 14 as a treatment liquid. When the cross-sectional area of the opening 9 is larger than the cross-sectional area of the rising portion 7, the sludge blanket 5a is less disturbed;
Solid-liquid separation is improved. Sludge blanket 5
A part of a is returned as sludge and flows into the mixed liquid section 4 from the opening 11 together with the mixed liquid. Providing the inclined plate 18 in the solid-liquid separation section 5 increases the solid-liquid separation effect.
また消化部１２において発生ガスが異常に多く
なつたりして、例え消化部１２のスラツジブラン
ケツトが破壊され、混合液に多量の汚泥が含まれ
ても固液分離部５により効果的に汚泥が分離さ
れ、再び消化部１２へ返送されるため、嫌気性処
理を良好に維持することができる。 Furthermore, even if the gas generated in the digestion section 12 becomes abnormally large and the sludge blanket of the digestion section 12 is destroyed and a large amount of sludge is contained in the mixed liquid, the solid-liquid separation section 5 can effectively remove the sludge. is separated and returned to the digestion section 12, so anaerobic treatment can be maintained in good condition.
余剰汚泥は消化槽１の底部に設けられた排泥ピ
ツト１６に濃縮され、排泥管１７から排泥され
る。 Excess sludge is concentrated in a sludge pit 16 provided at the bottom of the digestion tank 1, and is drained from a sludge pipe 17.
混合液部４の上部に集まつたガスはガス排出管
１５から排出される。 The gas collected in the upper part of the liquid mixture part 4 is discharged from the gas discharge pipe 15.
上記の嫌気性消化槽では、消化部１２で発生す
るガスは整流板１０により混合液部４に流入し、
また混合液部４のガスは仕切板６に遮られて上昇
部７を上昇するため、ガスが固液分離部５へ流入
することはなく、スラツジブランケツト５ａの乱
れはない。このため消化部１２の上方に固液分離
部５を配置した場合でも、十分固液分離を行うこ
とができる。整流板１０の傾斜部１０ａがないと
きは、整流板１０の上部がガスの固液分離部への
流入を遮り、上記と同様の効果が得られる。 In the above-mentioned anaerobic digestion tank, the gas generated in the digestion section 12 flows into the mixed liquid section 4 by the rectifier plate 10,
Further, since the gas in the mixed liquid section 4 is blocked by the partition plate 6 and moves up the rising section 7, the gas does not flow into the solid-liquid separation section 5, and the sludge blanket 5a is not disturbed. Therefore, even when the solid-liquid separation section 5 is disposed above the digestion section 12, solid-liquid separation can be performed sufficiently. When there is no inclined portion 10a of the current plate 10, the upper part of the current plate 10 blocks the gas from flowing into the solid-liquid separation section, and the same effect as described above can be obtained.
またガスの浮力によつて混合液が上昇部７を上
昇して下降部８を下降し、その旋回力によつて固
液分離部５の沈降汚泥が混合液部４に返送される
ため、無動力で汚泥が返送され、汚泥の堆積やス
カムの発生はない。発生ガス量が不足するとき
は、ガス排出管１５からガスを混合液部４に循環
し、必要な上昇流速を得ることができる。 In addition, the mixed liquid rises in the ascending part 7 and descends in the descending part 8 due to the buoyant force of the gas, and the settled sludge in the solid-liquid separation part 5 is returned to the mixed liquid part 4 by the swirling force. The sludge is returned by power, so there is no accumulation of sludge or generation of scum. When the amount of generated gas is insufficient, the gas is circulated from the gas discharge pipe 15 to the mixed liquid section 4 to obtain the required upward flow rate.
なお、以上の実施例では消化槽１として直方体
のものを示したが、円筒形その他の形状のもので
もよく、円筒形の場合、図面の１ａを中心軸とし
て固液分離部５を中央に設けてもよく、また１ｂ
を中心軸として、上昇部７を中央に設けてもよ
い。 In the above embodiments, a rectangular parallelepiped digester 1 is shown, but it may be cylindrical or other shape. In the case of a cylindrical shape, the solid-liquid separation section 5 is provided in the center with the center axis 1a in the drawing. Also 1b
The rising portion 7 may be provided in the center with the center axis being the center axis.
消化反応部としては、内部に充填材を設置また
は投入し、それらに汚泥を付着させ、固定床また
は流動床として消化を行うこともできる。さらに
固液分離部５は減圧に維持してもよい。 As for the digestion reaction section, it is also possible to install or introduce fillers inside, attach sludge to them, and perform digestion as a fixed bed or a fluidized bed. Furthermore, the solid-liquid separation section 5 may be maintained at reduced pressure.
本発明は有機性廃液、下水汚泥、し尿その他の
嫌気性消化に適した原液の処理用の嫌気性消化槽
として利用可能である。 The present invention can be used as an anaerobic digestion tank for treating organic waste liquid, sewage sludge, human waste, and other raw solutions suitable for anaerobic digestion.
この発明によれば、消化槽の上部に２つの仕切
板を設けて、上昇部および下降部からなる混合液
部と固液分離部に区画するとともに、固液分離部
の下部から混合液部に伸びる整流板を設けるよう
にしたので、発生ガスの固液分離部への流入を防
ぐとともに、発生ガスによる旋回流を利用して固
液分離部の沈降汚泥を消化反応部へ返送し、小設
置面積で効率的な嫌気性消化を行うことができ、
かつ発生ガスを効率よく集めて密閉部分を少なく
できるなどの効果がある。
According to this invention, two partition plates are provided in the upper part of the digester to divide the tank into a mixed liquid part and a solid-liquid separation part consisting of an ascending part and a descending part. By installing a rectifying plate that extends, it prevents the generated gas from flowing into the solid-liquid separation section, and uses the swirling flow of the generated gas to return the settled sludge in the solid-liquid separation section to the digestion reaction section, making it possible to reduce the size of small installations. Efficient anaerobic digestion can be performed in the area,
It also has the effect of efficiently collecting generated gas and reducing the number of sealed parts.
図面は実施例の断面図であり、１は消化槽、２
は原液流入部、３，６は仕切板、４は混合液部、
５は固液分離部、７は上昇部、８は下降部、１０
は整流板、１２は消化部、１３は原液管、１４は
処理液管、１５はガス排出管である。
The drawings are cross-sectional views of the embodiment, where 1 is a digestion tank and 2 is a sectional view of an embodiment.
is the raw solution inflow part, 3 and 6 are the partition plates, 4 is the mixed liquid part,
5 is a solid-liquid separation section, 7 is a rising section, 8 is a descending section, 10
12 is a rectifying plate, 12 is a digestion section, 13 is a stock solution pipe, 14 is a processing liquid pipe, and 15 is a gas discharge pipe.
Claims (1)
化槽の液面上から液中に伸びかつ消化槽上部を固
液分離部および密閉形の混合液部に区画する第１
の仕切板と、固液分離部の上部に連絡する処理液
管と、混合液部の上部に連絡するガス排出管と、
上端が混合液部の液面下に位置し下部が第１の仕
切板の先端と間隔を保つた下向きの傾斜部となつ
て固液分離部の下部まで伸びかつ混合液部を上昇
部および下降部に区画する第２の仕切板と、第２
の仕切板と交差する方向に下向きに傾斜しかつ第
２の仕切板の下端と間隔を保つて固液分離部の下
部から混合液部に伸びる整流板とを備えたことを
特徴とする嫌気性消化槽。 ２ 第２の仕切板の傾斜部および整流板の傾斜角
が45°以上である特許請求の範囲第１項記載の嫌
気性消化槽。 ３ 第１および第２の仕切板間ならびに第２の仕
切板と整流板間に形成される開口部の断面積が上
昇部の断面積より大きい特許請求の範囲第１項ま
たは第２項記載の嫌気性消化槽。 ４ 整流板は下部に逆方向に傾斜した傾斜部を有
する特許請求の範囲第１項ないし第３項のいずれ
かに記載の嫌気性消化槽。 ５ 消化槽が底部に排泥手段を有する特許請求の
範囲第１項ないし第４項のいずれかに記載の嫌気
性消化槽。[Scope of Claims] 1. A digestion tank having a raw liquid inflow part at the bottom, and a pipe extending from above the liquid level of the digestion tank into the liquid and dividing the upper part of the digestion tank into a solid-liquid separation part and a closed mixed liquid part. 1
a partition plate, a processing liquid pipe connected to the upper part of the solid-liquid separation part, and a gas discharge pipe connected to the upper part of the mixed liquid part,
The upper end is located below the liquid level of the mixed liquid part, and the lower part is a downwardly inclined part that maintains a distance from the tip of the first partition plate, and extends to the lower part of the solid-liquid separation part, and allows the mixed liquid part to rise and fall. a second partition plate that divides the
An anaerobic system comprising: a rectifying plate that is inclined downward in a direction intersecting with the second partition plate and extends from the lower part of the solid-liquid separation section to the mixed liquid section while keeping a distance from the lower end of the second partition plate. Digestion tank. 2. The anaerobic digestion tank according to claim 1, wherein the inclined portion of the second partition plate and the angle of inclination of the rectifying plate are 45° or more. 3 The cross-sectional area of the opening formed between the first and second partition plates and between the second partition plate and the current plate is larger than the cross-sectional area of the rising part. Anaerobic digester. 4. The anaerobic digestion tank according to any one of claims 1 to 3, wherein the baffle plate has a sloped portion inclined in the opposite direction at the bottom thereof. 5. The anaerobic digestion tank according to any one of claims 1 to 4, wherein the digestion tank has sludge removal means at the bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59091123A JPS60235696A (en) | 1984-05-09 | 1984-05-09 | Anaerobic digestion vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59091123A JPS60235696A (en) | 1984-05-09 | 1984-05-09 | Anaerobic digestion vessel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60235696A JPS60235696A (en) | 1985-11-22 |
| JPH0422637B2 true JPH0422637B2 (en) | 1992-04-20 |
Family
ID=14017745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59091123A Granted JPS60235696A (en) | 1984-05-09 | 1984-05-09 | Anaerobic digestion vessel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60235696A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62282691A (en) * | 1986-06-02 | 1987-12-08 | Sanki Eng Co Ltd | Settling and separating mechanism for anaerobic biological reaction device |
| EP1806323A1 (en) * | 2006-01-05 | 2007-07-11 | Biothane Systems International B.V. | Process and reactor for anaerobic waste water purification |
| JP6048557B1 (en) * | 2015-09-25 | 2016-12-21 | 栗田工業株式会社 | Anaerobic treatment apparatus and anaerobic treatment method |
-
1984
- 1984-05-09 JP JP59091123A patent/JPS60235696A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60235696A (en) | 1985-11-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |