JPS61238353A - Concentrator - Google Patents
ConcentratorInfo
- Publication number
- JPS61238353A JPS61238353A JP7966685A JP7966685A JPS61238353A JP S61238353 A JPS61238353 A JP S61238353A JP 7966685 A JP7966685 A JP 7966685A JP 7966685 A JP7966685 A JP 7966685A JP S61238353 A JPS61238353 A JP S61238353A
- Authority
- JP
- Japan
- Prior art keywords
- concentrate
- decanter
- differential speed
- water content
- concentration
- 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
Landscapes
- Centrifugal Separators (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は遠心分子ａ機を用いて、被処理材例えばし尿処
理場や下水処理場などの水処理施設から発生する汚泥を
濃縮するための濃縮装置に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention uses a centrifugal molecule a machine to concentrate a material to be treated, such as sludge generated from a water treatment facility such as a human waste treatment plant or a sewage treatment plant. Concerning a concentrator.
更に詳しくは、デカンタから得られる濃縮物（例えば脱
水汚泥）を所定濃度（含水率）にすることができる濃縮
装置に関するものである。More specifically, the present invention relates to a concentrating device that can bring the concentrate (for example, dehydrated sludge) obtained from a decanter to a predetermined concentration (moisture content).
［従来の技術］
各種の水処理施設から発生する汚泥等の固液混合物を濃
縮する装置として遠心分離機を採用した濃縮装置が周知
である。この遠心分離機として、回転筒（外筒）内に、
該外筒と僅かな回転速度差で回転する、外周掻き出し用
のスクリューを有した回転円筒（内筒）が設置されてお
り、濃縮物及び清澄液を連続的に排出するデカンタと称
される遠心分ｇＩ機もよく知られている。[Prior Art] A concentrating device employing a centrifugal separator is well known as a device for concentrating solid-liquid mixtures such as sludge generated from various water treatment facilities. As this centrifugal separator, inside the rotating cylinder (outer cylinder),
A rotating cylinder (inner cylinder) with a screw for scraping the outer periphery is installed, which rotates with a slight difference in rotational speed from the outer cylinder, and a centrifugal cylinder called a decanter is installed to continuously discharge the concentrate and clear liquid. MinugI machines are also well known.
ところで、ａｍ装置の遠心分離機から取り出される濃縮
物の濃度を一定のものとすることは、その後の処理（例
えば汚泥の脱水処理や焼却処理等）にとって好ましいこ
とである。By the way, it is preferable for subsequent processing (for example, sludge dehydration processing, incineration processing, etc.) to maintain a constant concentration of the concentrate taken out from the centrifuge of the am device.
しかしながら、遠心分＃機から取り出される濃縮物の濃
度を測定し、常に所定濃度の濃縮物を得るよう構成され
た濃縮装置は知られていない、即ち、例えば、遠心分ａ
ｍに供給する被処理材の濃度及び流量を検出し、この濃
度及び流量に応じて分離機への被処理材供給量を調節す
るようにした装置が公知である（実公昭５２−４８０６
５）。However, no concentrator is known that measures the concentration of the concentrate taken out from the centrifuge and is configured to always obtain a predetermined concentration of concentrate;
There is a known device that detects the concentration and flow rate of the material to be treated to be supplied to the separator and adjusts the amount of material to be supplied to the separator according to the concentration and flow rate (Japanese Utility Model Publication No. 52-4806).
5).
また、被濃縮材中の固形分濃度を測定し、この固形分濃
度に見合う薬剤（脱水剤等の薬剤）を被処理材に混合す
る方法も知られている。しかしながら、このような従来
の方式のものでは、遠心分離機から取り出される濃縮物
の濃度（含水率）を一定にすることはできなかった。Furthermore, a method is also known in which the solid content concentration in the material to be concentrated is measured and a chemical (such as a dehydrating agent) corresponding to the solid content concentration is mixed into the material to be treated. However, with such conventional systems, it was not possible to keep the concentration (water content) of the concentrate taken out from the centrifuge constant.
［発明が解決しようとする問題点］
このように、遠心分＃機を備えた従来の濃縮装置におい
ては、遠心分ｌＩＩ機に加えられる負荷を均等にするこ
とはなされていても、取り出される濃縮物の濃度そのも
のは制御されておらず、一定の 、濃度の濃縮物を安定
して後工程に送り出すことが困難であった。そのため、
この濃縮物を処理する設備では、安定した処理を行うた
めに余分な付帯装置を設けなければならなかった。[Problems to be Solved by the Invention] As described above, in the conventional concentrating device equipped with a centrifugal separator, although the load applied to the centrifugal separator is made equal, the concentration taken out The concentration of the substance itself is not controlled, making it difficult to stably send a concentrate with a constant concentration to subsequent processes. Therefore,
Facilities for processing this concentrate had to be equipped with extra auxiliary equipment to ensure stable processing.
［問題点を解決するための手段］
本発明は、外筒内に、外周掻き出し用のスクリューを持
つ回転円筒を内蔵したデカンタ及びこのデカンタに被処
理材を供給する装置を備えた濃縮装置において、デカン
タから取り出される濃縮物の濃度を検出し、この濃度が
一定の濃度となるようにデカンタの内筒と外筒との差速
成いはデカンタべの被処理材への供給量を調節するよう
構成したものである。[Means for Solving the Problems] The present invention provides a concentrating device that includes a decanter that has a rotary cylinder built in its outer cylinder that has a screw for scraping the outer periphery, and a device that supplies a material to be treated to the decanter. It is configured to detect the concentration of the concentrate taken out from the decanter and adjust the differential speed between the inner cylinder and the outer cylinder of the decanter or the amount of supply to the material to be processed in the decanter so that the concentration remains constant. This is what I did.
［作用］
本発明においては、デカンタから取り出される濃縮物の
濃度（含水率などの液含有率）が一定となるように被処
理材の供給量や内筒と外筒との差速が調節される。その
ため、確実に一定濃度の濃縮物を得ることが可能とされ
る。[Function] In the present invention, the supply amount of the material to be treated and the differential speed between the inner cylinder and the outer cylinder are adjusted so that the concentration (liquid content such as water content) of the concentrate taken out from the decanter is constant. Ru. Therefore, it is possible to reliably obtain a concentrate of a constant concentration.
［実施例］ 以下図面を参照して実施例について説明する。[Example] Examples will be described below with reference to the drawings.
第１図は本発明の実施例に係る濃縮装置の全体構成を示
す系統図である。なおこの実施例は、廃水の生物処理施
設からの排出される生物処理液を連続的に固液分離する
ためのものである。FIG. 1 is a system diagram showing the overall configuration of a concentrator according to an embodiment of the present invention. This embodiment is for continuous solid-liquid separation of a biological treatment liquid discharged from a wastewater biological treatment facility.
１は生物処理施設から排出される生物処理液を沈降分離
して、上澄液と沈殿物に分離するための槽であり、この
槽１の底部は、可変速モータ２付のポンプ３が途中に設
けられた配管４によってデカンタ５に給液可能に接続さ
れている。1 is a tank for separating the biological treatment liquid discharged from the biological treatment facility into supernatant liquid and sediment, and a pump 3 with a variable speed motor 2 is installed at the bottom of the tank 1. It is connected to a decanter 5 through a pipe 4 provided therein so that liquid can be supplied thereto.
デカンタ５は、回転する外筒５ａ及び核外筒５ａ内に設
置された、外周掻き出し用スクリューを持つ種型の回転
円筒（内筒）５ｂを有しており、さらに、駆動動力装置
としてのモータ６、回転円筒５ｂを外筒５ａの回転速度
よりも僅かに小さな回転速度で回転させるための差速発
生手段７等を備えている。The decanter 5 has a rotating outer cylinder 5a and a rotary cylinder (inner cylinder) 5b installed in the core outer cylinder 5a. 6. It is equipped with differential speed generating means 7 and the like for rotating the rotating cylinder 5b at a rotation speed slightly lower than the rotation speed of the outer cylinder 5a.
このデカンタ５には分離液（清澄液）抜き出し用の配管
８と濃縮物取出用の配管９とが接続されている。Connected to this decanter 5 are a pipe 8 for extracting a separated liquid (clarified liquid) and a pipe 9 for extracting a concentrate.
濃縮物取出用の配管９の先端は濃縮物貯槽ｉ。The tip of the pipe 9 for taking out the concentrate is the concentrate storage tank i.
に達しており、また配管９の途中には濃縮物の濃度（含
水率）を検出するための濃度計１１が設けられている。A concentration meter 11 is provided in the middle of the pipe 9 to detect the concentration (water content) of the concentrate.
濃度計１１の検出信号は演算制御器１２の演算部１２ａ
に入力可能とされている。演算制御器１２は制御部１２
ｂを有しており、制御信号を差速発生手段７及び可変速
モータ２へ出力可能とされている。The detection signal of the concentration meter 11 is sent to the calculation section 12a of the calculation controller 12.
It is possible to enter. The arithmetic controller 12 is a control section 12
b, and is capable of outputting a control signal to the differential speed generating means 7 and the variable speed motor 2.
このように構成された濃縮装置において、槽ｌ内の沈殿
物は槽ｌの底部からポンプ３によって抜き出され、配管
４からデカンタ５に送られて！線処理を受ける。デカン
タ５で生ずる分離液は配管８で抜き出され、再度生物処
理施設へ返送され、濃縮物は配管９から抜き出され、濃
縮物貯槽１０へ貯留され、後工程に送られる。In the concentrator configured in this way, the sediment in tank 1 is extracted from the bottom of tank 1 by pump 3, and is sent to decanter 5 through piping 4! undergo line processing. The separated liquid produced in the decanter 5 is extracted through a pipe 8 and sent back to the biological treatment facility, and the concentrate is extracted from a pipe 9, stored in a concentrate storage tank 10, and sent to a subsequent process.
濃度計１１は配管９中を流れる濃縮物の濃度を連続的も
しくは間欠的に検出しており、演算制御器１２はこの検
出濃度に基いて差速発生手段７及び可変速モータ２を制
御する。The concentration meter 11 continuously or intermittently detects the concentration of the concentrate flowing through the pipe 9, and the arithmetic controller 12 controls the differential speed generating means 7 and the variable speed motor 2 based on this detected concentration.
次にこの制御の一例について説明する。演算制御器１２
は濃度計１１から出力されてくる信号を入力し、検出濃
度値（含水率）を予め設定されている基準値（基準含水
率）とを対比し、検出された含水率が設定された基準含
水率よりも高い場合には回転円筒５ｂと外筒５ａとの差
速が小さくなるように差速発生手段７へ制御信号を出力
する。Next, an example of this control will be explained. Arithmetic controller 12
inputs the signal output from the concentration meter 11, compares the detected concentration value (water content) with a preset standard value (standard water content), and compares the detected water content with the set standard water content. If the speed difference is higher than the speed difference, a control signal is output to the speed difference generating means 7 so that the speed difference between the rotating cylinder 5b and the outer cylinder 5a becomes smaller.
回転円筒５ｂと外筒５ａとの差速が小さくなると、デカ
ンタ５内における給液の滞留時間が長くなるので、脱水
がよく行われるようになり、濃縮物の含水率が低下する
。逆に、濃度計１１で検出される濃縮物の含水率が基準
含水率よりも低い場合には、回転円筒５ｂと外筒５ａと
の差速を大きくするよう差速発生手段７へ制御信号を出
力する。これにより、給液のデカンタ５内における滞留
時間が短くなり、濃縮物の濃度（含水率）が高くなる。When the differential speed between the rotating cylinder 5b and the outer cylinder 5a becomes smaller, the residence time of the supplied liquid in the decanter 5 becomes longer, so that dehydration is performed more effectively and the water content of the concentrate is reduced. Conversely, when the water content of the concentrate detected by the concentration meter 11 is lower than the reference water content, a control signal is sent to the speed difference generating means 7 to increase the speed difference between the rotating cylinder 5b and the outer cylinder 5a. Output. This shortens the residence time of the supplied liquid in the decanter 5 and increases the concentration (water content) of the concentrate.
ところで、デカンタ５はその外筒５ａ及び回転円筒５ｂ
ともに高速に回転するものであるところから、その差速
はそれほど大きくとることができないのが通常である。By the way, the decanter 5 has an outer cylinder 5a and a rotating cylinder 5b.
Since both rotate at high speed, the differential speed between them cannot normally be made that large.
即ち、差速発生手段７での差速の調整によっては、濃縮
物の含水率はそれ程広い範囲では調整することができな
い。That is, by adjusting the differential speed in the differential speed generating means 7, the moisture content of the concentrate cannot be adjusted in such a wide range.
この差速発生手段７の差速調節では基準値を達成できな
い程の含水率の変動が生じた場合には、デカンタ５に供
給される給液量を調節する。即ち、演算制御器１２の制
御部１２ｂからは可変速モータ２に制御信号が出力され
る。そして、ｆｆａ＆Ｉｉｌ物の含水率が基準含水率よ
りも所定値以上高い場合には給液量を減少させるよう可
変速モータ２を減速し、濃縮物の含水率が基準含水率よ
り所定値以北低い場合には可変速モータ２を増速し供給
量を増大させる。If the water content fluctuates to such an extent that the reference value cannot be achieved by adjusting the differential speed of the differential speed generating means 7, the amount of liquid supplied to the decanter 5 is adjusted. That is, a control signal is output from the control section 12b of the arithmetic controller 12 to the variable speed motor 2. When the water content of the ffa&il product is higher than the reference water content by a predetermined value or more, the variable speed motor 2 is decelerated to reduce the amount of liquid supplied, and the water content of the concentrate is lower than the reference water content by a predetermined value or more. In this case, the speed of the variable speed motor 2 is increased to increase the supply amount.
なお、上記実施例においては、ます差速発生手段７の調
節により濃縮物の含水率を調整し、差速の変更では調整
できないような大幅な含水率の変動が生じた場合に可変
速モータ２の回転数を調整するようにしているが、差速
の調整と可変速モータ２の回転数調整とを併行して行っ
てもよい。しかしながら、上記実施例のように、ます差
速を調整するように制御すれば、１縮装置全体への被処
理後の供給量及び処理物の排出量の変動幅が小さくなる
ので好ましい。In the above embodiment, the water content of the concentrate is adjusted by adjusting the mass differential speed generating means 7, and when a large fluctuation in the water content that cannot be adjusted by changing the speed difference occurs, the variable speed motor 2 Although the rotation speed of the variable speed motor 2 is adjusted, the adjustment of the differential speed and the rotation speed adjustment of the variable speed motor 2 may be performed simultaneously. However, it is preferable to perform control such that the differential speed is adjusted as in the above embodiment, since the range of fluctuation in the amount of processed material supplied to the entire 1 compression apparatus and the amount of processed material discharged is reduced.
なお、差速発生手段の差速の調整には、従来。Note that the adjustment of the differential speed of the differential speed generating means is conventional.
手動で差速を調整するよう設けられているレバーを適当
な駆動手段（例えば電動機や油圧シリンダ等）で制御す
ればよい。A lever provided to manually adjust the differential speed may be controlled by an appropriate drive means (for example, an electric motor, a hydraulic cylinder, etc.).
また、濃度計１１の濃度センサとしては、超音波式など
の公知のセンサを用いることができる。Further, as the concentration sensor of the concentration meter 11, a known sensor such as an ultrasonic type can be used.
なお、濃縮物貯槽１０に貯えられた濃縮物は、高次の脱
水処理工程等の各種の後工程に送られる。Note that the concentrate stored in the concentrate storage tank 10 is sent to various post-processes such as a higher-order dehydration process.
上記実施例においては、廃水の生物処理装置から排出さ
れる生物処理液を１Ｍ１ｉｌ処理しているが、本発明の
濃縮装置は、その他の各種の固液混合物を脱水処理、濃
縮処置する用途にも供し得ることは明らかである。In the above embodiment, the biological treatment liquid discharged from the wastewater biological treatment device is treated at 1M1il, but the concentration device of the present invention can also be used for dehydrating and concentrating various other solid-liquid mixtures. It is clear that it can be provided.
［効果」
以上詳述した通り、本発明の濃縮装置によれば、一定の
濃度の濃縮物を安定して取り出すことができる。また、
そのため、後工程における濃縮物の処理が極めて容易に
なるという効果もある。[Effects] As detailed above, according to the concentrating device of the present invention, a concentrate of a constant concentration can be stably taken out. Also,
Therefore, there is also the effect that processing of the concentrate in the subsequent process becomes extremely easy.
第１図は本発明の実施例に係る濃縮装置の系統図である
。
１・・・貯槽、 ２・・・可変速モータ、３
・・・ポンプ、 ５・・・デカンタ、５ａ・・
・外筒、 ５ｂ・・・回転円筒、７・・・差速
発生手段、 １１・・・濃度計、１２・・・演算制御
器。FIG. 1 is a system diagram of a concentrator according to an embodiment of the present invention. 1...Storage tank, 2...Variable speed motor, 3
...Pump, 5...Decanter, 5a...
- Outer cylinder, 5b... Rotating cylinder, 7... Differential speed generating means, 11... Concentration meter, 12... Arithmetic controller.
Claims (3)
転円筒を内蔵すると共に、該回転円筒を駆動させる差速
発生手段を備えたデカンタと、該デカンタに被処理材を
供給する供給量可変方式の被処理材供給手段と、 該デカンタからの濃縮物の液含有率を検出する濃度計と
、 該濃度計からの信号を入力し検出された液含有率を予め
設定された液含有率と比較演算し、濃縮物の液含有率が
設定値よりも高い場合には前記回転円筒の差速を減少さ
せる制御信号を前記差速発生手段に出力するか又はデカ
ンタへの被処理材供給量を減少する制御信号を被処理材
供給手段に出力すると共に、濃縮物の液含有率が設定濃
度よりも低い場合には前記回転筒の差速を増大させる制
御信号を前記差速発生手段に出力するか又は被処理材供
給量を増大させる制御信号を前記被処理材供給手段に出
力する演算制御器と、 を備えて成ることを特徴とする濃縮装置。(1) A rotary cylinder with a screw for scraping the outer periphery is built into the outer cylinder, and a decanter is equipped with a differential speed generating means for driving the rotary cylinder, and the supply amount of the material to be processed is variable to be supplied to the decanter. a concentration meter for detecting the liquid content of the concentrate from the decanter; and a concentration meter that inputs a signal from the concentration meter and converts the detected liquid content into a preset liquid content. Comparative calculation is performed, and if the liquid content of the concentrate is higher than the set value, a control signal for reducing the differential speed of the rotating cylinder is output to the differential speed generating means, or the amount of the material to be treated to be supplied to the decanter is reduced. Outputting a control signal to decrease the processing material supplying means, and outputting a control signal to the differential speed generating means to increase the differential speed of the rotating cylinder when the liquid content of the concentrate is lower than a set concentration. or an arithmetic controller that outputs a control signal for increasing the amount of supplied material to be processed to the material supplying means.
の範囲第１項に記載の濃縮装置。(2) The concentrating device according to claim 1, wherein the material to be treated is sludge.
ータ付ポンプであることを特徴とする特許請求の範囲第
１項又は第２項に記載の濃縮装置。(3) The concentrating device according to claim 1 or 2, wherein the supply amount variable type processing material supply means is a pump with a variable speed motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7966685A JPS61238353A (en) | 1985-04-15 | 1985-04-15 | Concentrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7966685A JPS61238353A (en) | 1985-04-15 | 1985-04-15 | Concentrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61238353A true JPS61238353A (en) | 1986-10-23 |
Family
ID=13696490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7966685A Pending JPS61238353A (en) | 1985-04-15 | 1985-04-15 | Concentrator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61238353A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63130156A (en) * | 1986-11-19 | 1988-06-02 | Hitachi Ltd | Solid-liquid separation method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5610353A (en) * | 1979-07-05 | 1981-02-02 | Suguru Katsume | Completely-enclosed type screw-carrying centrifugal separator |
| JPS5665649A (en) * | 1979-11-02 | 1981-06-03 | Toshiba Corp | Control apparatus of centrifugal dehydrator |
| JPS58205554A (en) * | 1982-05-26 | 1983-11-30 | Kobe Steel Ltd | Sludge concentrating device |
-
1985
- 1985-04-15 JP JP7966685A patent/JPS61238353A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5610353A (en) * | 1979-07-05 | 1981-02-02 | Suguru Katsume | Completely-enclosed type screw-carrying centrifugal separator |
| JPS5665649A (en) * | 1979-11-02 | 1981-06-03 | Toshiba Corp | Control apparatus of centrifugal dehydrator |
| JPS58205554A (en) * | 1982-05-26 | 1983-11-30 | Kobe Steel Ltd | Sludge concentrating device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63130156A (en) * | 1986-11-19 | 1988-06-02 | Hitachi Ltd | Solid-liquid separation method |
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