JPH01307500A - Method and device for thickening sludge - Google Patents
Method and device for thickening sludgeInfo
- Publication number
- JPH01307500A JPH01307500A JP63136746A JP13674688A JPH01307500A JP H01307500 A JPH01307500 A JP H01307500A JP 63136746 A JP63136746 A JP 63136746A JP 13674688 A JP13674688 A JP 13674688A JP H01307500 A JPH01307500 A JP H01307500A
- Authority
- JP
- Japan
- Prior art keywords
- cake
- sludge
- dehydrated
- dehydrator
- thickening
- 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
- 239000010802 sludge Substances 0.000 title claims abstract description 36
- 230000008719 thickening Effects 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 title claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000012530 fluid Substances 0.000 claims abstract description 5
- 239000010801 sewage sludge Substances 0.000 claims description 4
- 239000010865 sewage Substances 0.000 claims description 2
- 239000007787 solid Substances 0.000 abstract description 9
- 239000007788 liquid Substances 0.000 abstract description 5
- 230000001678 irradiating effect Effects 0.000 abstract description 2
- 230000029087 digestion Effects 0.000 description 6
- 239000012141 concentrate Substances 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001079 digestive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000000717 retained effect Effects 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
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
この発明は、下水等の汚泥の濃縮方法並びにその装置の
改良に関する。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a method for concentrating sludge such as sewage, and improvements to the apparatus.
「従来の技術」
従来の下水の汚泥等の処理手段としては、流入する汚泥
を大型の重力濃縮槽で３〜５％程度に濃縮した上で、消
化タンクに貯留し、これを真空脱水機やフィルタプレス
等の脱水機で脱水し、含水率６０〜８５％のケーキとし
て、焼却あるいは投棄処分がなされている。また、他の
１縮手段として、特公昭６２−３５８０４号に示すよう
に、濃縮槽中に濾過板を吊設して水分を吸引分離して、
濃縮汚泥を槽の底部から抜（ようにした機械的な濃縮手
段を知られている。以上、何れの手段を用いても濃縮さ
れた汚泥は、３〜５％程度である。``Prior art'' Conventional methods for treating sewage sludge, etc. include concentrating the inflowing sludge to about 3 to 5% in a large gravity thickening tank, storing it in a digestion tank, and then using a vacuum dehydrator or It is dehydrated using a dehydrator such as a filter press, and the resulting cake with a moisture content of 60 to 85% is incinerated or dumped. In addition, as another reduction method, as shown in Japanese Patent Publication No. 62-35804, a filter plate is suspended in a concentration tank to suck and separate moisture.
Mechanical thickening means for extracting thickened sludge from the bottom of a tank are known. No matter which means are used, the amount of sludge concentrated is about 3 to 5%.
「発明が解決しようとする問題点」
上述のように、従来の濃縮方法によれば、３〜５％程度
にしか濃縮できず、膨大な量となり、汚泥処理施設にお
ける消化タンクも大容量のものを必要とする。"Problems to be Solved by the Invention" As mentioned above, with the conventional concentration method, it is possible to concentrate only about 3 to 5%, resulting in a huge amount, and the digestion tank in the sludge treatment facility is also large capacity. Requires.
また、このようにして消化した汚泥は、脱水機で水分８
５％程度以下に脱水したのち、焼却とか投棄処分される
のであるが、脱水したケーキは固形状であシ、これを移
送するにも不便であり、焼却するにも破砕しなければな
らず手数を要する。In addition, the sludge digested in this way has a water content of 8
After being dehydrated to less than 5%, it is incinerated or dumped, but the dehydrated cake is solid and it is inconvenient to transport, and even before incineration, it must be crushed, which is a hassle. It takes.
「問題点を解決するだめの手段」
そこで、この発明は従来の濃一方法とは全く異なる方法
を用い゛て、高濃縮汚泥を得るようにしたものであって
、その要旨とするところは、下水汚泥等を濃縮するに当
って、これを真空脱水機やべ〜ドブレス等の脱水機で脱
水し、その脱水ケーキに超音波を照射して、このケーキ
を流動体にしたものである。``Means to Solve the Problem'' Therefore, this invention uses a method completely different from the conventional thickening method to obtain highly concentrated sludge, and its gist is as follows: When concentrating sewage sludge, etc., it is dehydrated using a dehydrator such as a vacuum dehydrator or a bedo breath, and the dehydrated cake is irradiated with ultrasonic waves to turn the cake into a fluid.
すなわち、真空脱水機やベルトプレス等で固形物が３〜
５％程度の流動性を有する汚泥を脱水すると、含水率７
０〜８５％程度の固形状のケーキが得られるのであるが
、このケーキに超音波を照射することによって、そのフ
ロック、を破壊し、液体状とすることができるものであ
る。In other words, solids are reduced by 3 to 3
When sludge with a fluidity of about 5% is dehydrated, the moisture content is 7.
A cake with a solid content of about 0 to 85% is obtained, but by irradiating this cake with ultrasonic waves, the flocs can be destroyed and the cake can be turned into a liquid.
このように液体状となったケーキは、事後、輸送するに
してもポンプを用いて管内を輸送することが可能であシ
、また、消化して、その消化ガス（ＣＨ４，Ｃｏ等）を
得るにしても、固形物１５〜３０％に濃縮されて大巾に
減量されているので、消化タンクも小さくて済み、大量
のガスを得ることができ、また、焼却処分するにしても
、破砕等の前処理を必要としない。If the cake becomes liquid in this way, it can be transported inside the pipe using a pump after the fact, and it can also be digested to obtain the digestive gas (CH4, Co, etc.). However, since the solid content is concentrated to 15-30% and the volume is greatly reduced, the digestion tank can be small and a large amount of gas can be obtained. No pretreatment is required.
以下、図面に基づいてこの発明を説明する。The present invention will be explained below based on the drawings.
「実施例」
第１図において、符号１は濃縮槽、２は濃縮された汚泥
の貯留タンク、３は汚泥脱水用のべ〃ドブレス、４はケ
ーキの貯留タンク、５は貯留タンク４に貯留されたケー
キを照射するために設けた超音波発射装置、７は流動化
したケーキ搬送用のボボンプである。"Example" In Fig. 1, numeral 1 is a thickening tank, 2 is a storage tank for concentrated sludge, 3 is a bedding breath for sludge dewatering, 4 is a cake storage tank, and 5 is a storage tank for storing sludge. An ultrasonic emitting device 7 is provided to irradiate the cake, and 7 is a bobump for transporting the fluidized cake.
このよう罠配設された汚泥の処分フローシートでは、濃
縮槽ｌに流入した汚泥は、ここで３〜５％程度に濃縮さ
れ、この濃縮された汚、泥は、ベルトプレス３において
脱水されて、水分７５％（濃度２５％）程度のケーキに
脱水される。この脱水されたケーキは、第２図に示すよ
うに固形分Ｓに水分が保持されて固体状であるが、貯留
槽４において、超音波が照射されることによって、固体
状Ｏ構造が破壊され、１３図に示すように１固形分Ｓと
水分Ｗが遊離して液体状となシ、搬送ポンプで移送が可
能となる。尚、図示のフローでは、脱水機としてベルト
プレス４を用いて、含水率７５％程度のケーキとしてこ
れを流動化したが、脱水機としては、真空吸引式の脱水
機、遠心針４機。In the sludge disposal flow sheet with traps arranged in this way, the sludge that has flowed into the thickening tank 1 is concentrated here to about 3 to 5%, and this concentrated sludge and mud are dehydrated in the belt press 3. , it is dehydrated into a cake with a moisture content of about 75% (concentration 25%). As shown in FIG. 2, this dehydrated cake is solid with moisture retained in the solid content S, but the solid O structure is destroyed by ultrasonic irradiation in the storage tank 4. As shown in FIG. 13, the solid content S and water W are liberated and become liquid, which can be transferred by a transfer pump. In the illustrated flow, a belt press 4 was used as a dehydrator to fluidize the cake as a cake with a water content of about 75%, but the dehydrator used was a vacuum suction type dehydrator and 4 centrifugal needles.
ライ６ルタプレヌを用いてもよい。唯、脱水機とし、て
真空脱水機や遠心分屋機を用いたときには、含水率が高
い（８５％以上）ので、超音波で破砕した後の汚泥の搬
送が容易でるり、脱水機としてフィルタプレスを用いた
場合には、含水率が低い（７０％以下）ので、破砕後の
汚泥の搬送に適応したポンプの選定が必要である。Lai 6 Lutaprene may also be used. However, when using a vacuum dehydrator or a centrifugal dehydrator, the water content is high (over 85%), so the sludge can be easily transported after being crushed by ultrasonic waves, and a filter can be used as a dehydrator. When a press is used, since the water content is low (70% or less), it is necessary to select a pump suitable for transporting the crushed sludge.
「発明の効果」
以上の説明で明らかなように、この発明は従来の汚泥濃
縮の観念とは全（異なる発想に基づいたものであって、
その濃縮度が従来の３〜５％程から一挙ＫＩＯ〜３０％
と数倍に濃縮できたものである。このようにして、高濃
縮された液体状の汚泥を得ることＫよって、汚泥処理処
分上、次のような利点がある。"Effects of the Invention" As is clear from the above explanation, this invention is based on an idea completely different from the conventional concept of sludge concentration.
The concentration is KIO ~ 30% from the conventional 3 ~ 5%.
It was possible to concentrate several times. Obtaining highly concentrated liquid sludge in this manner has the following advantages in terms of sludge treatment and disposal.
（１１このようＫして、濃縮スラリー化した汚泥を消化
に使うときには、大巾に減量しているために施設タンク
等が小さくて済む上、濃密であるので、消化ガス（ＣＨ
４，Ｃｏ）が充分得られ、従来の消化施設で冬季等にお
いて、発生したガス不足を解消することができる。また
、このように濃縮したスラリー状の汚泥は、これを糖化
する等して他に再利用するにしても、そのｔ−ｉ、処理
が可能である。(11 When using the sludge that has been made into a concentrated slurry in this way for digestion, the amount of sludge reduced to a large extent requires a small facility tank, etc., and since it is dense, the digestion gas (CH
4, Co) can be obtained sufficiently, and gas shortages that occur in conventional digestion facilities, such as during winter, can be resolved. In addition, the slurry-like sludge thus concentrated can be processed for other purposes, such as by saccharification.
（２） また、このように処理した汚泥は、高濃度で
、且つ、ヌラリー状であるが故に、ポンプを用いてパイ
プ輸送が可能で、バキューム車等で便利に搬送できると
ともに、焼却するＫしても自燃性を有−しており、また
、ヌラリーでめるが故に、炉内への投入も容易である。(2) In addition, since the sludge treated in this way has a high concentration and is in a slurry form, it can be transported through pipes using pumps, conveniently transported by vacuum trucks, etc., and can be easily transported by incineration. It has self-combustibility even when used, and because it can be filled with nullary, it is easy to put it into the furnace.
このように、この発明はその濃縮濃度の点、その高濃度
のものを液状化した点で、従来の汚泥処理、処分上の問
題を悉く解消し得たものである。As described above, the present invention has solved all the problems in conventional sludge treatment and disposal in terms of its concentrated concentration and the fact that it has liquefied the high concentration.
第１図は、この発明に係る汚泥の濃縮方法並びにその装
置のフローシート図である。第２図は、加圧脱水したケ
ーキの含水状態を示す一部の拡大図、第３図は、加圧脱
水したケーキに超音波を照射したときの含水状態を示す
一部の拡大図である。
符号説明
３・ ベルトプレス ４． ケーキの貯留タンク５
、超音波発射装置FIG. 1 is a flow sheet diagram of the sludge concentration method and apparatus according to the present invention. Figure 2 is an enlarged view of a portion showing the water content state of a cake subjected to pressure dehydration, and Figure 3 is an enlarged view of a part showing the water content state when ultrasonic waves are irradiated to the cake subjected to pressure dehydration. . Code explanation 3. Belt press 4. Cake storage tank 5
, ultrasonic emitting device
Claims (1)
ス等の脱水機で脱水し、その脱水ケーキに超音波を照射
して、このケーキを流動体とすることを特長とする汚泥
の濃縮方法。 （２）略３〜５％に濃縮した下水等の汚泥を真空脱水機
で脱水し、含水率が略８５％以下のケーキを得るととも
に、このケーキに超音波を照射して、これを流動体とす
ることを特長とする汚泥の濃縮方法。 （３）略３〜５％に濃縮した下水等の汚泥をベルトプレ
スで脱水し、含水率が略７５％以下のケーキを得るとと
もに、このケーキに超音波を照射して、これを流動体と
することを特長とする汚泥の濃縮方法。 （４）濃縮した汚泥を脱水することができる加圧脱水機
を設け、この加圧脱水機からのケーキの排出部に、ケー
キ貯留用のタンク４を設け、このタンク４に、超音波発
射装置５を設けたことを特長とする汚泥の濃縮装置。 （６）濃縮汚泥を脱水することができるベルトプレス３
を設け、このベルトプレス３のケーキの排出部に、ケー
キ貯留用のタンク４を設け、このタンク４に超音波発射
装置５を設けたことを特長とする汚泥の濃縮装置。[Claims] (1) The feature is that sludge such as sewage is dehydrated using a dehydrator such as a vacuum dehydrator or a belt press, and the dehydrated cake is irradiated with ultrasonic waves to turn the cake into a fluid. A method for thickening sludge. (2) Sewage sludge concentrated to about 3-5% is dehydrated using a vacuum dehydrator to obtain a cake with a water content of about 85% or less, and this cake is irradiated with ultrasonic waves to transform it into a fluid. A sludge thickening method characterized by: (3) Sewage sludge concentrated to approximately 3-5% is dehydrated using a belt press to obtain a cake with a water content of approximately 75% or less, and this cake is irradiated with ultrasonic waves to convert it into a fluid. A sludge thickening method characterized by: (4) A pressurized dehydrator capable of dewatering concentrated sludge is provided, a cake storage tank 4 is provided at the cake discharge section from this pressurized dehydrator, and an ultrasonic emitting device is installed in this tank 4. A sludge thickening device characterized by having 5. (6) Belt press 3 that can dehydrate thickened sludge
A sludge thickening device characterized in that a cake storage tank 4 is provided at the cake discharge portion of the belt press 3, and an ultrasonic emitting device 5 is provided in the tank 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63136746A JPH01307500A (en) | 1988-06-03 | 1988-06-03 | Method and device for thickening sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63136746A JPH01307500A (en) | 1988-06-03 | 1988-06-03 | Method and device for thickening sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01307500A true JPH01307500A (en) | 1989-12-12 |
Family
ID=15182538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63136746A Pending JPH01307500A (en) | 1988-06-03 | 1988-06-03 | Method and device for thickening sludge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01307500A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7001520B2 (en) | 1995-11-02 | 2006-02-21 | Opencel Llc. | Method for treating waste-activated sludge using elecroporation |
| US7507341B2 (en) | 1999-01-13 | 2009-03-24 | Opencel Llc | Method of and apparatus for converting biological materials into energy resources |
| US7572369B2 (en) | 2007-02-16 | 2009-08-11 | Opencel Llc | System for supporting denitrification |
| JP2012187558A (en) * | 2011-03-14 | 2012-10-04 | Toshiba Corp | Dehydration system and dehydration treatment system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS531997A (en) * | 1976-06-26 | 1978-01-10 | Kenji Shimizu | Method and device for detecting foot trace or the like by polarizing action |
| JPS5480274A (en) * | 1977-12-05 | 1979-06-26 | Giulini Chemie | Method of accumulating thixotropus lime |
| JPS55149800A (en) * | 1980-05-09 | 1980-11-21 | Ebara Infilco Co Ltd | Dehydrating method of slurry |
| JPS57140439A (en) * | 1981-02-20 | 1982-08-31 | Dowa Mining Co Ltd | Method and apparatus for dredging gelatinized sediment |
| JPS5946172A (en) * | 1982-08-09 | 1984-03-15 | ベ−・ア−・エス・エフ・フアルベン・ウント・フア−ゼルン・アクチエンゲゼルシヤフト | Method of impregnating or coating electric or electronic member |
| JPS6071694A (en) * | 1983-09-29 | 1985-04-23 | Babcock Hitachi Kk | Method for improving fluidity of coal-water mixture |
-
1988
- 1988-06-03 JP JP63136746A patent/JPH01307500A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS531997A (en) * | 1976-06-26 | 1978-01-10 | Kenji Shimizu | Method and device for detecting foot trace or the like by polarizing action |
| JPS5480274A (en) * | 1977-12-05 | 1979-06-26 | Giulini Chemie | Method of accumulating thixotropus lime |
| JPS55149800A (en) * | 1980-05-09 | 1980-11-21 | Ebara Infilco Co Ltd | Dehydrating method of slurry |
| JPS57140439A (en) * | 1981-02-20 | 1982-08-31 | Dowa Mining Co Ltd | Method and apparatus for dredging gelatinized sediment |
| JPS5946172A (en) * | 1982-08-09 | 1984-03-15 | ベ−・ア−・エス・エフ・フアルベン・ウント・フア−ゼルン・アクチエンゲゼルシヤフト | Method of impregnating or coating electric or electronic member |
| JPS6071694A (en) * | 1983-09-29 | 1985-04-23 | Babcock Hitachi Kk | Method for improving fluidity of coal-water mixture |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7001520B2 (en) | 1995-11-02 | 2006-02-21 | Opencel Llc. | Method for treating waste-activated sludge using elecroporation |
| US7645382B2 (en) | 1995-11-02 | 2010-01-12 | Opencell Llc | Apparatus for converting biological materials into energy resources |
| US7507341B2 (en) | 1999-01-13 | 2009-03-24 | Opencel Llc | Method of and apparatus for converting biological materials into energy resources |
| US7572369B2 (en) | 2007-02-16 | 2009-08-11 | Opencel Llc | System for supporting denitrification |
| US7695621B2 (en) | 2007-02-16 | 2010-04-13 | Opencel Llc | Method of supporting denitrification |
| JP2012187558A (en) * | 2011-03-14 | 2012-10-04 | Toshiba Corp | Dehydration system and dehydration treatment system |
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