JPH0734735B2 - Fermenter - Google Patents
FermenterInfo
- Publication number
- JPH0734735B2 JPH0734735B2 JP2304905A JP30490590A JPH0734735B2 JP H0734735 B2 JPH0734735 B2 JP H0734735B2 JP 2304905 A JP2304905 A JP 2304905A JP 30490590 A JP30490590 A JP 30490590A JP H0734735 B2 JPH0734735 B2 JP H0734735B2
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- circulation pipe
- tank body
- flow
- liquid circulation
- 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
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
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Apparatus Associated With Microorganisms And Enzymes (AREA)
- Biological Treatment Of Waste Water (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 この発明は、例えば、排水処理やアルコール発酵に使用
される流動床型リアクタのような発酵槽に関する。Description: TECHNICAL FIELD The present invention relates to a fermenter such as a fluidized bed reactor used for wastewater treatment or alcohol fermentation.
従来の技術 この種の発酵槽としては、第３図に示すように、頂部近
くに液出口（31）が、底部に液入口（32）がそれぞれ設
けられている塔型の槽本体（33）と、液出口（31）およ
び液入口（32）に配管されている液循環パイプ（34）
と、液循環パイプ（34）に設けられているポンプ（35）
とを備えているものが知られている。また、液出口（3
1）に近接して液循環パイプ（34）に原料供給パイプ（3
6）が接続されている。液出口（31）より少し上のとこ
ろには廃液パイプ（37）が接続されている。槽本体（3
3）の頂部には廃ガスパイプ（38）が接続されている。
槽本体頂部下面中央部には垂下筒状バッフルプレート
（39）が設けられている。2. Description of the Related Art As a fermenter of this type, as shown in FIG. 3, a tower type tank body (33) is provided with a liquid outlet (31) near the top and a liquid inlet (32) at the bottom. And a liquid circulation pipe (34) connected to the liquid outlet (31) and the liquid inlet (32)
And a pump (35) provided in the liquid circulation pipe (34)
Those equipped with and are known. In addition, the liquid outlet (3
Close to 1), connect the liquid supply pipe (3) to the liquid circulation pipe (34).
6) is connected. A waste liquid pipe (37) is connected to a position slightly above the liquid outlet (31). Tank body (3
A waste gas pipe (38) is connected to the top of 3).
A hanging cylindrical baffle plate (39) is provided at the center of the lower surface of the top of the tank body.
発酵槽では、微生物保持担体Ｈが用いられるが、これ
は、例えば、ビーズ状のアルギン酸カルシウムや光硬化
性樹脂に菌体と包括固定したもの、砂やバーミキュライ
ト、多孔性樹脂の表面に菌体を自然付着させたものであ
る。In the fermenter, a microorganism holding carrier H is used. For example, this is a bead-like calcium alginate or a photocurable resin entrapped and fixed with bacterial cells, sand or vermiculite, or a bacterial cell on the surface of a porous resin. It is naturally attached.
上記発酵槽において、ポンプ（35）の作動により液循環
パイプ（34）を通じて、原料または反応液の一部が循環
されることにより、槽本体（33）内には流動に必要な液
線速度をもった上昇流が与えられ、これにより、担体Ｈ
が流動状態に保たれて、固定化された菌体と原料の反応
効率が高められる。In the fermentation tank, a part of the raw material or the reaction solution is circulated through the liquid circulation pipe (34) by the operation of the pump (35), so that the liquid linear velocity necessary for the flow is provided in the tank body (33). A rising flow is provided which causes the carrier H
Are kept in a fluidized state, and the reaction efficiency between the immobilized cells and the raw material is enhanced.
また、別の従来例としては、メタン発酵などにおいて、
装置が大型である場合、上記の流動床方式ではなく、固
定床方式のもの、例えば、微生物工学ハンドブック（朝
倉書店、鈴木智雄監修、1990年５月発行、441頁）に記
載されているように、嫌気性発酵槽が知られている。Also, as another conventional example, in methane fermentation and the like,
When the device is large, it is not a fluidized bed system as described above, but a fixed bed system, for example, as described in Microbial Engineering Handbook (Asakura Shoten, supervised by Tomoo Suzuki, May 1990, p. 441). , Anaerobic fermenters are known.
発明が解決しようとする課題 上記流動床型発酵槽において、反応が定常状態である連
続運転中は、担体Ｈは一定の液上昇流によって流動状態
に保たれるが、運転開始前や運転休始中は担体は沈降・
静止状態にあるため運転開始即座には流動状態になら
ず、液循環パイプ（34）を逆流して液循環パイプ（34）
が担体Ｈによって閉塞されるという現象が起きる。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the above fluidized bed type fermenter, the carrier H is kept in a fluidized state by a constant upward flow of liquid during the continuous operation in which the reaction is in a steady state. The carrier is settled inside
Since it is in a stationary state, it does not become a fluid state immediately after the start of operation, but flows back through the liquid circulation pipe (34) and the liquid circulation pipe (34)
The phenomenon that the carrier is blocked by the carrier H occurs.
また、省スペース化を図るために、槽本体（33）の一部
を地中に設置しようとしても、液循環パイプ（34）が邪
魔になり、そうすることができなかった。Further, even if an attempt was made to install a part of the tank main body (33) in the ground in order to save space, the liquid circulation pipe (34) interfered, and it was not possible to do so.
一方、嫌気性発酵槽では、上記のような現象が起こる恐
れは無いが、担体と原料の接触効率が好ましくない。On the other hand, in an anaerobic fermenter, the above phenomenon does not occur, but the contact efficiency between the carrier and the raw material is not preferable.
この発明の目的は、担体と原料の接触効率が良好で、し
かも、運転開始時の液循環パイプの閉塞を確実に防止で
きる発酵槽を提供することにある。An object of the present invention is to provide a fermenter which has a good contact efficiency between a carrier and a raw material and can surely prevent blockage of a liquid circulation pipe at the start of operation.
課題を解決するための手段 この発明による発酵槽は、担体に必要な上昇流速度を得
るため、発酵槽上部に設けられた液噴出口からの下降流
を均等に分散し、上昇流とする構造を底部に有すること
を特徴とするものであって、槽本体の上部に、液出口お
よび液入口が設けられ、液出口に液循環パイプの吸込口
が接続され、液入口に液循環パイプが通され、液循環パ
イプの吐出口が槽本体底面中央部に向けられているもの
である。Means for Solving the Problems The fermenter according to the present invention has a structure in which a descending flow from a liquid ejection port provided in the upper part of the fermenter is evenly dispersed to obtain an ascending flow in order to obtain an ascending flow velocity required for a carrier. The liquid outlet and the liquid inlet are provided in the upper part of the tank body, the suction port of the liquid circulation pipe is connected to the liquid outlet, and the liquid circulation pipe is connected to the liquid inlet. The discharge port of the liquid circulation pipe is directed toward the center of the bottom surface of the tank body.
また、槽本体底面中央部に、下降流分散用上方突出部が
設けられていることが好ましい。Further, it is preferable that an upward projecting portion for downward flow dispersion is provided at the central portion of the bottom surface of the tank body.
液循環パイプの吐出口は、槽本体の頂部近くでも、底部
近くでも、どこにあってもよい。The outlet of the liquid circulation pipe may be near the top of the tank body, near the bottom, or anywhere.
下降流均等分散用上方突出部の外面は、例えば、凸状ま
たは凹状の球面であってもよい。The outer surface of the upward protrusion for even distribution of the downward flow may be, for example, a convex or concave spherical surface.
作用 この発明による発酵槽では、槽本体の上部に、液出口お
よび液入口が設けられ、液出口に液循環パイプの吸込口
が接続され、液入口に液循環パイプが通されているか
ら、運転開始前や運転休止中の沈降・静止状態の担体
が、運転開始直後に液入口付近を流動することがない。
しかも、液を循環させるために必要な機器が槽本体の上
部に集中されている。Action In the fermenter according to the present invention, the liquid outlet and the liquid inlet are provided in the upper part of the tank main body, the liquid outlet is connected to the suction port of the liquid circulation pipe, and the liquid circulation pipe is passed through the liquid inlet. Precipitated and stationary carriers before starting or during operation do not flow near the liquid inlet immediately after starting operation.
Moreover, the equipment necessary for circulating the liquid is concentrated in the upper part of the tank body.
さらに、液循環パイプの吐出口が槽本体底面中央部に向
けられているから、液循環パイプの吐出口は下を向いて
おり、吐出口から上記沈降・静止状態の担体が流入する
ことがない。しかも、吐出口からの下降流は、槽本体下
部において反転されて、担体の流動に必要な上昇液線速
度をもった上昇流となる。Further, since the discharge port of the liquid circulation pipe is directed to the central portion of the bottom surface of the tank main body, the discharge port of the liquid circulation pipe faces downward, and the above-mentioned sedimented and stationary carrier does not flow from the discharge port. . Moreover, the descending flow from the discharge port is reversed in the lower part of the tank main body and becomes an ascending flow having an ascending liquid linear velocity required for the flow of the carrier.
また、槽本体底面中央部に、下降流均等分散用上方突出
部が設けられていると、吐出口からの下降流は、上方突
出部により均等に分散される。Further, when the downward projecting portion for evenly distributing the downward flow is provided in the central portion of the bottom surface of the tank body, the downward flow from the discharge port is evenly distributed by the upward projecting portion.
実施例 この発明の実施例を、第１図および第２図を参照してつ
ぎに説明する。Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.
発酵槽は、塔型の槽本体（11）を備えている。槽本体
（11）の周壁上部には大径部（12）が設けられ、これの
高さの中程に液出口（13）が設けられている。液出口
（13）には液循環パイプ（14）の吸込口（15）が接続さ
れている。液出口（13）の上方には廃液パイプ（16）が
接続されるとともに、これと反対側に原料供給パイプ
（17）が接続されている。槽本体（11）の頂壁中央部に
は液入口（18）が設けられ、これに液循環パイプ（14）
が通されている。槽本体（11）外の液循環パイプ（14）
にはポンプ（19）が設けられている。槽本体（11）内の
液循環パイプ（14）は液入口（18）から垂下し、その下
端吐出口（21）は槽本体（11）の高さの中程にあって、
槽本体（11）の底面中央部に向けられている。また、吐
出口（21）の縁部にはディフューザ（22）が設けられて
いる。槽本体（11）頂壁の縁部寄りには廃ガスパイプ
（23）が接続されている。槽本体（11）の底壁には、垂
直断面逆Ｕ字状の上方突出部（24）が設けられている。
また、槽本体（11）内の液循環パイプ（14）の上部を取
り囲むように槽本体（11）の頂壁に垂下筒状バッフルプ
レート（25）が設けられるとともに、このバッフルプレ
ート（25）と液出口（13）の間の別の湾曲状パッフルプ
レート（26）が設けられている。The fermenter is equipped with a tower-shaped tank body (11). A large diameter portion (12) is provided on the upper part of the peripheral wall of the tank body (11), and a liquid outlet (13) is provided in the middle of the height. A suction port (15) of the liquid circulation pipe (14) is connected to the liquid outlet (13). A waste liquid pipe (16) is connected to the upper side of the liquid outlet (13), and a raw material supply pipe (17) is connected to the opposite side. A liquid inlet (18) is provided at the center of the top wall of the tank body (11), and a liquid circulation pipe (14) is provided in this.
Has been passed through. Liquid circulation pipe (14) outside the tank body (11)
A pump (19) is provided in the. The liquid circulation pipe (14) in the tank body (11) hangs down from the liquid inlet (18), and the lower end discharge port (21) is at the middle of the height of the tank body (11).
It is directed toward the center of the bottom surface of the tank body (11). A diffuser (22) is provided at the edge of the discharge port (21). A waste gas pipe (23) is connected near the edge of the top wall of the tank body (11). The bottom wall of the tank body (11) is provided with an upward protruding portion (24) having an inverted U-shaped vertical cross section.
Further, a hanging cylindrical baffle plate (25) is provided on the top wall of the tank body (11) so as to surround the upper part of the liquid circulation pipe (14) in the tank body (11), and this baffle plate (25) Another curved puffle plate (26) is provided between the liquid outlets (13).
ポンプ（19）の作動により液出口（13）から液循環パイ
プ（14）に吸込まれた液は、液循環パイプ（14）内を流
れて液入口（18）から槽本体（11）内に導入され、循環
パイプ（14）の吐出口（21）から吐出される。吐出口
（21）から吐出された液は槽本体（11）中央部を下降流
として降下し、突出部（24）により均等に分散されて周
囲に拡がりながら反転されられ、その後、担体Ｈの流動
に必要な上昇線速度をもった上昇流として、下降流の外
側を上昇する。The liquid sucked from the liquid outlet (13) to the liquid circulation pipe (14) by the operation of the pump (19) flows through the liquid circulation pipe (14) and is introduced into the tank body (11) from the liquid inlet (18). And is discharged from the discharge port (21) of the circulation pipe (14). The liquid discharged from the discharge port (21) descends as a downward flow in the center of the tank body (11), is evenly dispersed by the protrusion (24) and is inverted while spreading to the surroundings, and then the flow of the carrier H. Ascending flow having an ascending linear velocity necessary for the ascending flow rises outside the downward flow.
発明の効果 この発明によれば、運転開始前や運転休止中の沈降・静
止状態の担体が、運転開始直後に液入口付近を流動する
ことがなく、液循環パイプの吐出口は下を向いており、
吐出口から上記沈降・静止状態の担体が流入することが
ないから、運転開始時の液循環パイプの閉塞を確実に防
止できる。EFFECTS OF THE INVENTION According to the present invention, the carrier in the settling / stationary state before the start of operation or during the stop of operation does not flow near the liquid inlet immediately after the start of operation, and the discharge port of the liquid circulation pipe faces downward. Cage,
Since the sedimented and stationary carrier does not flow from the discharge port, it is possible to reliably prevent the liquid circulation pipe from being blocked at the start of operation.
しかも、液を循環させるために必要な機器が槽本体の上
部に集中されているから、槽本体の下部を地中に設置す
ることが可能であり、そうすることにより、省スペース
化を図ることができる。Moreover, since the equipment necessary for circulating the liquid is concentrated in the upper part of the tank main body, it is possible to install the lower part of the tank main body in the ground, and by doing so, it is possible to save space. You can
さらに、吐出口からの下降流は、槽本体下部において反
転されて、担体の流動に必要な上昇液線速度をもった上
昇流となるから、担体と原料を効率よく接触させること
ができる。Further, the descending flow from the discharge port is inverted in the lower part of the tank main body and becomes an ascending flow having an ascending liquid linear velocity required for the flow of the carrier, so that the carrier and the raw material can be efficiently brought into contact with each other.
また、吐出口からの下降流は、上方突出部により均等に
分散されるから、上昇流を効率よく得ることができる。Further, since the downward flow from the discharge port is evenly dispersed by the upward protrusion, the upward flow can be efficiently obtained.
第１図および第２図はこの発明の実施例を示し、第１図
は垂直縦断面図、第２図は底面図である。 第３図は従来例を示す第１図相当の断面図である。 （11）……槽本体、（13）……液出口、（14）……液循
環パイプ、（15）……吸込口、（18）……液入口、（2
1）……液出口、（24）……突出部。1 and 2 show an embodiment of the present invention, FIG. 1 is a vertical longitudinal sectional view, and FIG. 2 is a bottom view. FIG. 3 is a sectional view corresponding to FIG. 1 showing a conventional example. (11) …… Bath body, (13) …… Liquid outlet, (14) …… Liquid circulation pipe, (15) …… Suction inlet, (18) …… Liquid inlet, (2
1) …… Liquid outlet, (24) …… Projection.
フロントページの続き (72)発明者 岩崎 公一 大阪府大阪市此花区西九条５丁目３番28号 日立造船株式会社内 (56)参考文献 特開 昭62−294076（ＪＰ，Ａ)Front page continuation (72) Inventor Koichi Iwasaki 5-3-3 Nishikujo 5-chome, Konohana Ward, Osaka City, Osaka Prefecture Hitachi Shipbuilding Co., Ltd. (56) Reference JP 62-294076 (JP, A)
Claims (2)
び液入口（18）が設けられ、液出口（13）に液循環パイ
プ（14）の吸込口（15）が接続され、液入口（18）に液
循環パイプ（14）が通されてその吐出口（21）が槽本体
（11）底面中央部に向けられている発酵槽。A liquid outlet (13) and a liquid inlet (18) are provided in an upper part of a tank body (11), and a suction port (15) of a liquid circulation pipe (14) is connected to the liquid outlet (13). A fermentation tank in which a liquid circulation pipe (14) is passed through the liquid inlet (18) and its discharge port (21) is directed toward the center of the bottom surface of the tank body (11).
散用上方突出部（24）が設けられている請求項１記載の
発酵槽。2. The fermentation tank according to claim 1, wherein an upper protruding portion (24) for evenly distributing the downward flow is provided at the center of the bottom surface of the tank body (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2304905A JPH0734735B2 (en) | 1990-11-09 | 1990-11-09 | Fermenter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2304905A JPH0734735B2 (en) | 1990-11-09 | 1990-11-09 | Fermenter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04179470A JPH04179470A (en) | 1992-06-26 |
| JPH0734735B2 true JPH0734735B2 (en) | 1995-04-19 |
Family
ID=17938707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2304905A Expired - Lifetime JPH0734735B2 (en) | 1990-11-09 | 1990-11-09 | Fermenter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0734735B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006042827A (en) * | 2005-10-14 | 2006-02-16 | Saga Prefecture | Bioreactor |
-
1990
- 1990-11-09 JP JP2304905A patent/JPH0734735B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04179470A (en) | 1992-06-26 |
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