JPH0857475A - Solid-liquid separation by modification of sludge - Google Patents

Solid-liquid separation by modification of sludge

Info

Publication number
JPH0857475A
JPH0857475A JP6215206A JP21520694A JPH0857475A JP H0857475 A JPH0857475 A JP H0857475A JP 6215206 A JP6215206 A JP 6215206A JP 21520694 A JP21520694 A JP 21520694A JP H0857475 A JPH0857475 A JP H0857475A
Authority
JP
Japan
Prior art keywords
sludge
sludge water
solid
water
tank
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
Application number
JP6215206A
Other languages
Japanese (ja)
Other versions
JP3154899B2 (en
Inventor
Yoshiyuki Sugawara
良行 菅原
Noriharu Hoshi
範晴 星
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nishihara Environment Co Ltd
Original Assignee
Nishihara Environmental Sanitation Research Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nishihara Environmental Sanitation Research Corp filed Critical Nishihara Environmental Sanitation Research Corp
Priority to JP21520694A priority Critical patent/JP3154899B2/en
Publication of JPH0857475A publication Critical patent/JPH0857475A/en
Application granted granted Critical
Publication of JP3154899B2 publication Critical patent/JP3154899B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Separation Of Suspended Particles By Flocculating Agents (AREA)
  • Physical Water Treatments (AREA)
  • Treatment Of Sludge (AREA)

Abstract

PURPOSE: To accelerate the reduction of moisture of a dehydrated cake by irradiating sludge water with laser beam at the time of the solid-liquid separation of sludge water to modify a solid to bring moisture in the cell wall of the solid to a state easy to separate before coagulating the solid to bring the same to a state easy to separate. CONSTITUTION: The raw sludge water in a tank 4 is supplied to a laser irradiation apparatus 10 and the cell wall of sludge is destructed to modify the raw sludge water to store the modified sludge water in a tank 9. The modified sludge water in the tank 9 is supplied to a centrifugal separator 1 by a pump 6 and chemicals are supplied to the separator 1 from a tank. At this time, the flow rates of the sludge water and chemicals are respectively measured by flowmeters 33, 34 and the flow rate ratio of them is operated by an operator 32 and the samples of the sludge water and chemicals are respectively supplied to a tank in this flow rate ratio by pumps 30, 31. Further, the sludge water and chemicals are mixed in the tank 26 to form floc sludge and the viscosity of this floc sludge is measured by a measuring device 27 to control a flow rate ratio.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、下水処理場等で汚泥を
固液分離して、分離液と濃縮液または脱水ケーキとに分
ける分離機に関し、汚泥を改質することにより脱水性を
改善する方法に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a separator for solid-liquid separation of sludge in a sewage treatment plant or the like to separate the separated liquid and a concentrated liquid or a dehydrated cake. On how to do.

【0002】[0002]

【従来の技術】固液分離機で、汚泥を固液分離するため
に、通常は凝集剤などの薬品が使用され、汚泥粒子をフ
ロック化することにより固体沈降性を改善している。
2. Description of the Related Art In a solid-liquid separator, a chemical such as a coagulant is usually used for solid-liquid separation of sludge, and sludge particles are flocculated to improve solid sedimentation.

【0003】しかし、この方法では薬品費が高いので、
薬注率制御装置を使用し、薬品費の低減を図っている。
However, since the cost of the medicine is high in this method,
A chemical injection rate control device is used to reduce drug costs.

【0004】図4は例えば特開平5−168977に示
された従来の遠心脱水機の概略フローシートである。こ
の遠心脱水機は遠心脱水機41、原汚泥タンク42、薬
品タンク43、薬注率制御ユニット44、原汚泥水供給
ポンプ50及び薬品注入ポンプ51等からなる。
FIG. 4 is a schematic flow sheet of a conventional centrifugal dehydrator disclosed in, for example, Japanese Patent Laid-Open No. 5-168977. This centrifugal dehydrator includes a centrifugal dehydrator 41, a raw sludge tank 42, a chemical tank 43, a chemical injection rate control unit 44, a raw sludge water supply pump 50, a chemical injection pump 51, and the like.

【0005】この薬注率制御装置は、遠心脱水機41に
供給される原汚泥水と薬品との流量比を比率演算機45
で算出し、この流量比に基づいて汚泥水および薬品を混
合タンク46に供給する。この混合タンク46内で汚泥
水と薬品を攪拌し、汚泥をフロック化する。フロック化
された汚泥水の粘度を粘度測定機47にて測定し、この
粘度に基づいて薬注率を制御する。この方法により、薬
品費は大きく軽減された。
This chemical injection rate control device calculates a flow rate ratio of raw sludge water and chemicals supplied to a centrifugal dehydrator 41 by a ratio calculator 45.
And the sludge water and chemicals are supplied to the mixing tank 46 based on this flow rate ratio. Sludge water and chemicals are stirred in the mixing tank 46 to make the sludge floc. The viscosity of the flocculated sludge water is measured by the viscosity measuring device 47, and the chemical injection rate is controlled based on this viscosity. By this method, the chemical cost was greatly reduced.

【0006】一方、薬品費軽減の目的は達成されたが、
脱水率をさらに改善すべき要請もある。
On the other hand, although the purpose of reducing the drug cost was achieved,
There is also a demand to further improve the dehydration rate.

【0007】[0007]

【発明が解決しようとする課題】凝集剤などの薬品を使
用する固液分離方法は、分離された液体は、そのまま排
出されるが、固体を含む汚泥は、遠心分離機を通過後も
脱水ケーキ中に若干の水分を含む。現在の脱水機の技術
分野では、脱水機本体と凝集剤の開発が進み、脱水ケー
キの水分をさらに減少させるのは困難である。そのた
め、本発明は凝集剤等の薬品を使用する前に汚泥の性質
を改良し、脱水ケーキの低水分化を図ることを目的とす
る。
In the solid-liquid separation method using a chemical such as a flocculant, the separated liquid is discharged as it is, but sludge containing solids is dehydrated cake even after passing through the centrifuge. Contains some water. In the technical field of the present dehydrator, it is difficult to further reduce the water content of the dehydrated cake due to the progress of development of the dehydrator body and the flocculant. Therefore, it is an object of the present invention to improve the properties of sludge before using a chemical such as a flocculant to reduce the water content of the dehydrated cake.

【0008】[0008]

【課題を解決するための手段】上記目的を達成するため
に、本発明は、原汚泥水をポンプにてレーザー照射装置
に送る。レーザー照射装置において原汚泥水にレーザー
照射する。この工程により、原汚泥水中の汚泥の細胞壁
を破壊し、原汚泥水中の汚泥を改質することができる。
その後、レーザー照射した原汚泥水に凝集剤を注入する
と、細胞内液を含めた汚泥粒子をフロック化することが
できる。フロック化した汚泥粒子を遠心脱水機により脱
水すると、汚泥の細胞内液まで脱水ケーキより分離され
る。この結果、脱水ケーキの低水分化が可能となる。
In order to achieve the above object, the present invention pumps raw sludge water to a laser irradiation device. The original sludge water is laser-irradiated by the laser irradiation device. By this step, the cell wall of the sludge in the raw sludge water can be destroyed and the sludge in the raw sludge water can be reformed.
After that, when a coagulant is injected into the laser-irradiated raw sludge water, the sludge particles including the intracellular fluid can be flocculated. When the flocculated sludge particles are dehydrated by a centrifugal dehydrator, the intracellular liquid of sludge is also separated from the dehydrated cake. As a result, the water content of the dehydrated cake can be reduced.

【0009】[0009]

【作用】従来は、固液分離をする場合、分離すべき固体
を凝集して、分離しやすい状態にする方法を用いた。本
発明に係わる固液分離性改善方法は、固体を凝集して、
分離しやすい状態にする前に、固体の細胞壁内にある水
分を分離しやすい状態に改質する。その後、従来のよう
に凝集剤により分離すべき固体を分離しやすい状態にす
る。
In the past, when performing solid-liquid separation, a method of aggregating solids to be separated into a state in which they are easily separated was used. The solid-liquid separability improving method according to the present invention comprises agglomerating solids,
Before making it easy to separate, the water in the solid cell wall is modified to make it easy to separate. After that, the solid to be separated is put into a state in which it can be easily separated by the coagulant as in the conventional case.

【0010】固体の細胞壁内にある水分を分離しやすい
状態に改質する手段として、原汚泥水にレーザー照射す
る。レーザー照射により汚泥の細胞壁が破壊する。この
汚泥の細胞壁が破壊するのは、レーザーのエネルギーに
より細胞壁を切断する作用による。従って、固体の細胞
壁を破壊するに必要なエネルギーをレーザー照射により
汚泥に与えなければならない。この固体の細胞壁の破壊
により、固体の細胞壁内にある水分は固体の細胞壁外の
物質と接触可能となる。そのため、固体の細胞壁内にあ
る水分を凝集剤の注入で分離可能な状態にすることがで
きる。その結果、従来脱水することができなかった固体
の細胞壁内にある水分までも遠心脱水機により、脱水す
ることができる。
Laser irradiation is applied to the raw sludge water as a means for modifying the water content in the solid cell wall into a state in which it can be easily separated. Laser irradiation destroys the cell wall of sludge. The destruction of the cell wall of this sludge is due to the action of cutting the cell wall by the energy of the laser. Therefore, the energy required to destroy the solid cell walls must be applied to the sludge by laser irradiation. By destroying the cell wall of the solid, the water inside the cell wall of the solid can come into contact with the substance outside the cell wall of the solid. Therefore, the water in the solid cell wall can be separated by injecting the aggregating agent. As a result, even the water in the solid cell wall, which could not be dehydrated conventionally, can be dehydrated by the centrifugal dehydrator.

【0011】[0011]

【実施例1】本発明の実施例1について図1及び図3に
基づいて説明する。図1は本発明に係わるレーザー照射
した原汚泥水に凝集剤を自動的に制御、注入して、固液
分離機の脱水性を改善する方法の概念系統図である。本
発明に係わる装置は、原汚泥水タンク4、レーザー照射
装置10、遠心分離機1及び薬品注入率制御装置25か
らなる。その他の設備として、原汚泥水供給ポンプ7、
改質汚泥水供給ポンプ6、改質汚泥水流量計33及び薬
品流量計34等からなる。さらに、薬品注入率制御装置
25は、混合タンク26、粘度測定器27、コントロー
ラ12、自動弁ユニット29、比率演算機32及び混合
タンクへの改質した汚泥水供給ポンプ30、薬品供給ポ
ンプ31からなる。
[Embodiment 1] Embodiment 1 of the present invention will be described with reference to FIGS. FIG. 1 is a conceptual system diagram of a method for automatically controlling and injecting a coagulant into laser-irradiated raw sludge water according to the present invention to improve the dehydration property of a solid-liquid separator. The device according to the present invention comprises a raw sludge water tank 4, a laser irradiation device 10, a centrifuge 1, and a chemical injection rate control device 25. As other equipment, raw sludge water supply pump 7,
It comprises a reformed sludge water supply pump 6, a reformed sludge water flow meter 33, a chemical flow meter 34, and the like. Further, the chemical injection rate control device 25 includes a mixing tank 26, a viscosity measuring device 27, a controller 12, an automatic valve unit 29, a ratio calculator 32, and a sludge water supply pump 30 for reforming the mixing tank and a chemical supply pump 31. Become.

【0012】なお、コントローラ12は改質汚泥水供給
ポンプ6と薬品供給ポンプ8の流量比を制御する。自動
弁ユニット29は混合タンク26の下方に設置した自動
弁28の開閉を制御する。
The controller 12 controls the flow rate ratio between the reformed sludge water supply pump 6 and the chemical supply pump 8. The automatic valve unit 29 controls opening / closing of an automatic valve 28 installed below the mixing tank 26.

【0013】また、レーザー照射装置10は、図3の概
略断面図で説明する。
The laser irradiation device 10 will be described with reference to the schematic sectional view of FIG.

【0014】レーザー照射装置10はCO2 レーザー発
振器61、ビーム拡大機62、反射鏡63、集光レンズ
64及び水路65からなる。
The laser irradiation device 10 comprises a CO 2 laser oscillator 61, a beam expander 62, a reflecting mirror 63, a condenser lens 64 and a water channel 65.

【0015】次に、作用に就いて説明する。Next, the operation will be described.

【0016】先ず、原汚泥水をポンプ7にてレーザー照
射装置10に送る。原汚泥水66はレーザー照射装置1
0の水路65を流れ、水路65においてレーザーの照射
をうけ、原汚泥水66は改質される。
First, the raw sludge water is sent to the laser irradiation device 10 by the pump 7. Raw sludge water 66 is laser irradiation device 1
The original sludge water 66 is reformed by flowing through the water channel 65 of 0 and being irradiated with the laser in the water channel 65.

【0017】一方、レーザーはCO2 レーザー発振器6
1から出力し、ビーム拡大機62で拡大され反射鏡63
にて所定の方向に方向を変え、集光レンズ64により集
光されて、水路65の原汚泥水66を照射する。この場
合、レーザーの出力は50W、発振波長は10.6μm
である。この工程により、原汚泥水中の汚泥の細胞壁を
破壊し、原汚泥水中の汚泥を改質することができる。改
質された汚泥水は改質汚泥水タンク9に貯水する。次
に、遠心分離機1に改質した汚泥水を供給し、同時に薬
品タンク5より薬品を供給する。遠心分離機1に供給す
る改質した汚泥水及び薬品の流量をそれぞれの改質汚泥
水流量計33及び薬品流量計34により測定する。測定
されたそれぞれの流量に基づき、流量比率演算機32に
よって改質した汚泥水と薬品との流量比を算出する。こ
の流量比と同じになるように改質汚泥水サンプルポンプ
30と薬品サンプルポンプ31を使用して、サンプルを
混合タンク26に送る。混合タンク26内において改質
した汚泥水と薬品を攪拌し、混合タンク26内にフロッ
ク汚泥を作る。フロック化した汚泥の粘度を粘度測定器
27により測定し、測定した粘度に基づき遠心分離機1
に供給する改質汚泥水と薬品との流量比を制御する。こ
の場合、流量比に基づき薬品の供給量を増減する。即
ち、フロック汚泥の粘度が高ければ薬品量を下げ、フロ
ック汚泥の粘度が低ければ薬品量を上げるように制御す
る。この制御により薬品量は多すぎることはなく、常に
最適な状態で固液分離が行える。しかも、薬品注入前に
汚泥を改質しているので、脱水性よく固液分離が行われ
る。なお、レーザー発信器61は、CO2 レーザー発信
器に限定されず、Nd−YAGレーザー発信器等、汚泥
の細胞壁を破壊できるものであればよい。
On the other hand, the laser is a CO 2 laser oscillator 6
1 is output and is expanded by the beam expander 62 and is reflected by the reflecting mirror 63.
The direction is changed to a predetermined direction at, the light is condensed by the condenser lens 64, and the raw sludge water 66 in the water channel 65 is irradiated. In this case, the laser output is 50 W and the oscillation wavelength is 10.6 μm.
Is. By this step, the cell wall of the sludge in the raw sludge water can be destroyed and the sludge in the raw sludge water can be reformed. The modified sludge water is stored in the modified sludge water tank 9. Next, the modified sludge water is supplied to the centrifuge 1, and at the same time, the chemicals are supplied from the chemical tank 5. The flow rates of the modified sludge water and the chemicals supplied to the centrifuge 1 are measured by the modified sludge water flow meter 33 and the chemical flow meter 34, respectively. Based on each measured flow rate, the flow rate ratio calculator 32 calculates the flow rate ratio of the sludge water reformed and the chemicals. The sample is sent to the mixing tank 26 by using the modified sludge water sample pump 30 and the chemical sample pump 31 so as to have the same flow rate ratio. The sludge water that has been reformed and the chemicals are agitated in the mixing tank 26 to produce floc sludge in the mixing tank 26. The viscosity of the flocculated sludge is measured by a viscosity measuring device 27, and the centrifuge 1 is used based on the measured viscosity.
Controls the flow rate ratio of the modified sludge water and chemicals supplied to. In this case, the chemical supply amount is increased or decreased based on the flow rate ratio. That is, if the viscosity of the flock sludge is high, the amount of chemicals is decreased, and if the viscosity of the flock sludge is low, the amount of chemicals is increased. With this control, the amount of chemicals is not too large, and solid-liquid separation can always be performed in an optimum state. Moreover, since the sludge is modified before chemical injection, solid-liquid separation is performed with good dehydration. The laser oscillator 61 is not limited to the CO 2 laser oscillator, and may be any device capable of destroying the cell wall of sludge, such as an Nd-YAG laser oscillator.

【0018】本発明の方法によると、凝集剤と遠心分離
機の組み合わせでは脱水することができない脱水ケーキ
の低水分化を達成できる。
According to the method of the present invention, it is possible to reduce the water content of the dehydrated cake which cannot be dehydrated by the combination of the flocculant and the centrifugal separator.

【0019】[0019]

【実施例2】本発明の実施例2について図2及び図3に
基づいて説明する。図2は本発明に係わるレーザー照射
した原汚泥水に凝集剤を注入する際、濃度計を使用して
凝集剤の注入量を自動的に制御、固液分離機の脱水性を
改善する方法の概念系統図である。
Second Embodiment A second embodiment of the present invention will be described with reference to FIGS. FIG. 2 shows a method of automatically controlling the injection amount of the coagulant using a densitometer when pouring the coagulant into the laser-irradiated raw sludge water according to the present invention to improve the dehydration property of the solid-liquid separator. It is a conceptual system diagram.

【0020】図2において、図1と同一または均等な構
成部分には同一の符号を付して、容易に理解できるよう
にした。実施例2との相違は、薬品の供給量を制御する
方法である。
In FIG. 2, the same or equivalent components as in FIG. 1 are designated by the same reference numerals so that they can be easily understood. The difference from the second embodiment is the method of controlling the supply amount of the chemical.

【0021】本発明の実施例2に係わる装置は、遠心分
離機1、原汚泥水タンク4、薬品タンク5、レーザー照
射装置10及び制御ユニット23(図示せず)からな
る。その他の設備として、原汚泥水供給ポンプ7、薬品
供給ポンプ8、改質汚泥水流量計33及び薬品流量計3
4等からなる。さらに、制御ユニット23は遠心分離機
1の分離液の濃度を濃度計20で測定した結果に基づ
き、薬品供給ポンプ8の流量を制御する。
The apparatus according to the second embodiment of the present invention comprises a centrifuge 1, a raw sludge water tank 4, a chemical tank 5, a laser irradiation device 10 and a control unit 23 (not shown). As other equipment, raw sludge water supply pump 7, chemical supply pump 8, reformed sludge water flow meter 33 and chemical flow meter 3
It consists of 4 mag. Further, the control unit 23 controls the flow rate of the chemical supply pump 8 based on the result of measuring the concentration of the separated liquid of the centrifuge 1 with the densitometer 20.

【0022】次に、作用に就いて説明する。Next, the operation will be described.

【0023】先ず、原汚泥水は原汚泥水タンク4よりレ
ーザー照射装置10に送水され、原汚泥水が改質され
る。汚泥水の汚泥改質方法は実施例1と同様である。改
質された汚泥水は、改質汚泥水タンク9に貯える。次
に、遠心分離機1に改質汚泥水タンク9より改質汚泥水
を供給する途中の配管に薬品タンク5より薬品を注入す
る。
First, the raw sludge water is sent from the raw sludge water tank 4 to the laser irradiation device 10 to reform the raw sludge water. The sludge reforming method for sludge water is the same as in Example 1. The modified sludge water is stored in the modified sludge water tank 9. Next, the chemical is injected from the chemical tank 5 into the pipe in the middle of supplying the modified sludge water from the modified sludge water tank 9 to the centrifuge 1.

【0024】遠心分離機1に供給された改質汚泥水と薬
品は、汚泥を凝集し、遠心分離機1内にて固液分離され
る。遠心分離機1にて分離された分離液の一部は、濃度
計20に流入され、濃度が測定される。この濃度測定結
果に基づき制御ユニット23(図示せず)は、薬品供給
ポンプ8の流量を制御する。
The modified sludge water and the chemicals supplied to the centrifuge 1 aggregate the sludge and are solid-liquid separated in the centrifuge 1. A part of the separated liquid separated by the centrifuge 1 flows into the densitometer 20, and the concentration is measured. Based on this concentration measurement result, the control unit 23 (not shown) controls the flow rate of the chemical supply pump 8.

【0025】この場合、特開平5−177153に開示
されているように、凝集剤を使用すると凝集剤添加量が
異なっても同一濃度となる場合があるので濃度計のみで
は制御が困難になる。このため、濃度計の他に光学的セ
ンサー19が必要となる。しかし、実施例1に比較して
簡易な装置で脱水ケーキの低水分化ができる。
In this case, as disclosed in Japanese Unexamined Patent Publication No. 5-177153, when a coagulant is used, the same concentration may be obtained even if the amount of the coagulant added is different, so that it is difficult to control with a densitometer alone. Therefore, an optical sensor 19 is required in addition to the densitometer. However, compared to the first embodiment, the water content of the dehydrated cake can be reduced with a simple device.

【0026】[0026]

【発明の効果】本発明は、以上説明したように構成され
ているので、以下に記載されるような効果を奏する。 (1)凝集剤と遠心分離機の組み合わせでは脱水するこ
とができない脱水ケーキの低水分化を達成できる。 (2)脱水ケーキの軽量化、廃棄処分の容易化ができ
る。 (3)レーザー照射装置を加えることにより、既設の固
液分離機でも実施できる。
Since the present invention is configured as described above, it has the following effects. (1) It is possible to reduce the water content of a dehydrated cake, which cannot be dehydrated with a combination of a coagulant and a centrifuge. (2) It is possible to reduce the weight of the dehydrated cake and facilitate disposal. (3) An existing solid-liquid separator can be used by adding a laser irradiation device.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明に係わる改質された汚泥による固液分離
方法の概略系統図1である。
FIG. 1 is a schematic system diagram 1 of a solid-liquid separation method using modified sludge according to the present invention.

【図2】本発明に係わる改質された汚泥による固液分離
方法の概略系統図2である。
FIG. 2 is a schematic system diagram 2 of a solid-liquid separation method using modified sludge according to the present invention.

【図3】原汚泥水にレーザー照射する装置の概略断面図
である。
FIG. 3 is a schematic cross-sectional view of an apparatus for irradiating raw sludge water with a laser.

【図4】従来の凝集剤を使用した固液分離機の固液分離
方法の概略系統図である。
FIG. 4 is a schematic system diagram of a solid-liquid separation method of a solid-liquid separator using a conventional flocculant.

【符号の説明】[Explanation of symbols]

1 遠心分離機 4 原汚泥水タンク 5 薬品タンク 9 改質汚泥水タンク 10 レーザー照射装置 12 コントローラ 18 制御部 19 光学的センサー 20 濃度計 26 混合タンク 27 粘度測定器 29 自動弁ユニット 32 比率演算機 1 Centrifuge 4 Raw Sludge Water Tank 5 Chemical Tank 9 Modified Sludge Water Tank 10 Laser Irradiator 12 Controller 18 Controller 19 Optical Sensor 20 Concentration Meter 26 Mixing Tank 27 Viscosity Meter 29 Automatic Valve Unit 32 Ratio Calculator

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 汚泥水を固液分離して、分離液と濃縮液
または脱水ケーキとに分ける分離機において、原汚泥水
をポンプにてレーザー照射装置に送る工程と、レーザー
照射装置において原汚泥水にレーザー照射する工程と、
レーザー照射した原汚泥水に凝集剤を注入する工程と、
遠心脱水機において脱水処理する工程とからなる固液分
離方法であって、原汚泥水にレーザー照射する手段によ
り、原汚泥水中の汚泥の細胞壁を破壊し、原汚泥水中の
汚泥を改質することを特徴とする固液分離方法。
1. A separator in which sludge water is subjected to solid-liquid separation and separated into a separated liquid and a concentrated liquid or a dehydrated cake, a step of sending raw sludge water to a laser irradiation device by a pump, and a raw sludge in the laser irradiation device. Laser irradiation of water,
A step of injecting a coagulant into the laser-irradiated raw sludge water,
A method of solid-liquid separation comprising a step of dehydration treatment in a centrifugal dehydrator, wherein the means for irradiating the raw sludge water with a laser destroys the cell walls of the sludge in the raw sludge water and reforms the sludge in the raw sludge water. A solid-liquid separation method characterized by the above.
JP21520694A 1994-08-18 1994-08-18 Sludge reforming centrifuge Expired - Fee Related JP3154899B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21520694A JP3154899B2 (en) 1994-08-18 1994-08-18 Sludge reforming centrifuge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21520694A JP3154899B2 (en) 1994-08-18 1994-08-18 Sludge reforming centrifuge

Publications (2)

Publication Number Publication Date
JPH0857475A true JPH0857475A (en) 1996-03-05
JP3154899B2 JP3154899B2 (en) 2001-04-09

Family

ID=16668455

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21520694A Expired - Fee Related JP3154899B2 (en) 1994-08-18 1994-08-18 Sludge reforming centrifuge

Country Status (1)

Country Link
JP (1) JP3154899B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4478804B1 (en) * 2009-03-31 2010-06-09 学校法人東邦大学 Organic sludge treatment method
DE102016202517A1 (en) * 2016-02-18 2017-08-24 Uwe Härtfelder Method and device for treating sewage sludge
CN114538744A (en) * 2022-03-18 2022-05-27 苏州佳爱丽环保科技有限公司 Integrated dehydration process based on ultrahigh-dryness sludge extrusion device
CN114634291A (en) * 2022-03-21 2022-06-17 苏州市职业大学 Integrated dehydration process based on high-dryness sludge extrusion device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101555123B1 (en) 2013-01-29 2015-09-22 이희근 Oil skimming appartus using laser

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4919652A (en) * 1972-06-13 1974-02-21
JPS63162090A (en) * 1986-12-24 1988-07-05 Hitachi Ltd Device for preventing sticking and contamination of aquatic organism

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4919652A (en) * 1972-06-13 1974-02-21
JPS63162090A (en) * 1986-12-24 1988-07-05 Hitachi Ltd Device for preventing sticking and contamination of aquatic organism

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4478804B1 (en) * 2009-03-31 2010-06-09 学校法人東邦大学 Organic sludge treatment method
JP2010234233A (en) * 2009-03-31 2010-10-21 Toho Univ Foundation Organic sludge treatment method
DE102016202517A1 (en) * 2016-02-18 2017-08-24 Uwe Härtfelder Method and device for treating sewage sludge
CN114538744A (en) * 2022-03-18 2022-05-27 苏州佳爱丽环保科技有限公司 Integrated dehydration process based on ultrahigh-dryness sludge extrusion device
CN114634291A (en) * 2022-03-21 2022-06-17 苏州市职业大学 Integrated dehydration process based on high-dryness sludge extrusion device

Also Published As

Publication number Publication date
JP3154899B2 (en) 2001-04-09

Similar Documents

Publication Publication Date Title
JP2003200198A (en) Method and apparatus for treating sludge
JPH0857475A (en) Solid-liquid separation by modification of sludge
JP3925621B2 (en) Water or sludge treatment system
KR960001399B1 (en) Water treatment apparatus
JP3374637B2 (en) Emulsion wastewater treatment equipment containing orinoco oil
JP3067993B2 (en) Method and apparatus for biological dephosphorization of wastewater
JP3296414B2 (en) Coagulation sedimentation equipment
KR960000313B1 (en) Sludge dehydration method
JP2000350992A (en) Continuous flocculation of sludge
JPH09290273A (en) Method for adjusting amount of flocculant to be added and device therefor
JP2004344833A (en) Ozone water treatment plant
KR101222073B1 (en) Apparatus and Method of Improving Forward Osmosis Membrane Process Performance using Ultrasonic Waves
JP2006272228A (en) Dewatering method and apparatus for sludge
JP4519401B2 (en) Ultrasonic treatment tank
JP2011085472A (en) Floc strength measuring device and measuring method
JP2008212855A (en) Sludge treatment apparatus
KR20000052923A (en) Sludge dewatering control system
WO2022034710A1 (en) Sampling device for coagulation treatment device, coagulation treatment device, and water treatment method
JPH078325B2 (en) Suspension concentrating method and device
JPS60197300A (en) Method and apparatus for dehydrating sludge
JP2006263506A (en) Dehydration method and device of sludge
JP2004148146A (en) Wastewater treatment method
Bartelt et al. Control and optimization of flocculation processes in the laboratory and in plant
JP2000279706A (en) Treatment of waste emulsion
JPH11123395A (en) Method for controlling sludge in wastewater treatment

Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees