JP3504252B2 - Sludge concentration method and apparatus - Google Patents
Sludge concentration method and apparatusInfo
- Publication number
- JP3504252B2 JP3504252B2 JP2002182263A JP2002182263A JP3504252B2 JP 3504252 B2 JP3504252 B2 JP 3504252B2 JP 2002182263 A JP2002182263 A JP 2002182263A JP 2002182263 A JP2002182263 A JP 2002182263A JP 3504252 B2 JP3504252 B2 JP 3504252B2
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- endless belt
- concentrated
- belt
- layer
- 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
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- Treatment Of Sludge (AREA)
- Filtration Of Liquid (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は汚泥の濃縮方法およ
び装置に関し、下水処理場における最初沈殿池汚泥、余
剰汚泥である最終沈殿池汚泥、混合生汚泥、消化汚泥、
ＯＤ余剰汚泥、浄水場における凝集沈殿池汚泥等を濃縮
する技術に係るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sludge concentrating method and apparatus, including a first settling tank sludge in a sewage treatment plant, a final settling tank sludge which is excess sludge, a mixed raw sludge, a digested sludge,
It is related to the technology for concentrating OD surplus sludge and coagulation sedimentation tank sludge in water purification plants.
【０００２】[0002]
【従来の技術】従来、この種の汚泥の濃縮法には重力濃
縮法、機械濃縮法があり、機械濃縮法には遠心濃縮法、
常圧浮上法、加圧浮上法、造粒濃縮法がある。これら以
外に機械濃縮法の技術としては、濾布を使用した走行式
のベルトスクリーン型、ウェッジワイヤーやパンチング
メタルを使用した回転ドラム式のドラムスクリーン型、
ウェッジワイヤーを使用した固定式の傾斜スクリーン等
がある。2. Description of the Related Art Conventionally, there have been gravity concentration method and mechanical concentration method in this type of sludge concentration method.
There are atmospheric levitation, pressure levitation, and granulation concentration. In addition to these, mechanical concentrating technology includes traveling belt screen type using filter cloth, rotating drum type drum screen type using wedge wire and punching metal,
There are fixed tilt screens that use wedge wires.
【０００３】[0003]
【発明が解決しようとする課題】従来の濾布を使用した
走行式のベルトスクリーンでは、円環状をなす濾布ベル
トを駆動ローラと従動ローラ間に無端軌道状に掛け渡
し、駆動ローラの回転駆動によって濾布ベルトを走行さ
せている。このため、駆動ローラと濾布ベルトの間に所
定の摩擦力を発生させるために濾布ベルトを緊張状態に
展張する必要があり、走行軌道上に濾布緊張装置および
蛇行修正装置を設けねばならず、装置が複雑となる問題
がある。In a conventional traveling belt screen using a filter cloth, an annular filter cloth belt is looped between a driving roller and a driven roller in an endless track to drive the driving roller to rotate. Is running the filter cloth belt. Therefore, it is necessary to stretch the filter cloth belt in a tensioned state in order to generate a predetermined frictional force between the driving roller and the filter cloth belt, and a filter cloth tensioning device and a meandering correction device must be provided on the running track. However, there is a problem that the device becomes complicated.
【０００４】また、濾布は薬品を含む汚泥に対する耐食
性が弱いために維持コストが高くなり、汚泥の剥離性が
悪いので洗浄流体として水を使用する必要があり、その
脱離水を処理する排水処理設備の負荷が大きくなり、目
詰まり等により濃縮性が低下するなどの問題がある。ま
た、この目詰りにより寿命が短くなっている。Further, since the filter cloth has a low corrosion resistance to sludge containing chemicals, the maintenance cost is high, and the sludge is poor in peelability. Therefore, it is necessary to use water as a cleaning fluid. There is a problem that the load on the equipment becomes large and the concentrating property decreases due to clogging and the like. Also, due to this clogging, the life is shortened.
【０００５】ところで、ベルトプレス型脱水機に使用可
能な金属製のベルトとして、特開平５−１８０２７４号
公報に開示するものがある。これは、複数のスパイラル
コイルを螺旋方向を交互に変えて噛み合わせ、連結ロッ
ドで連結したものである。このベルトは高い耐圧強度を
有し、加圧脱水には適している。しかし、その伸縮性の
ために、使用に際しては駆動ローラとベルトの間に所定
の摩擦力を発生させるための緊張装置および蛇行修正装
置を設けねばならず、装置が複雑となる問題がある。By the way, as a metal belt that can be used in a belt press type dehydrator, there is one disclosed in Japanese Patent Application Laid-Open No. 5-180274. This is one in which a plurality of spiral coils are meshed by alternately changing the spiral direction and connected by a connecting rod. This belt has high compressive strength and is suitable for pressure dehydration. However, due to its elasticity, a tensioning device and a meandering correction device for generating a predetermined frictional force must be provided between the driving roller and the belt during use, which causes a problem that the device becomes complicated.
【０００６】本発明は上記した課題を解決するものであ
り、高い効率で重力脱水を行うことができる濃縮性に優
れた汚泥の濃縮方法および装置を提供することを目的と
する。The present invention is intended to solve the above-mentioned problems, and an object of the present invention is to provide a sludge concentrating method and a device capable of performing gravity dehydration with high efficiency and having excellent concentrating properties.
【０００７】[0007]
【課題を解決するための手段】上記問題を解決するため
に、請求項１に係る本発明の汚泥の濃縮方法は、上層と
下層の間に空隙を有する多層構造をなし、各層が複数の
線材を相互に当接して平行に配置するとともに適当間隔
で開孔を形成した無端ベルト上に濃縮対象汚泥を投入
し、無端ベルトが走行する間に重力脱水して濃縮対象汚
泥から脱離した脱離水を上層の線材間および開孔の毛細
管現象によって層間の空隙へ連続して吸水し、走行する
無端ベルトに振動を与えて層間の空隙に保持する脱離水
を下層を通して排水するものである。In order to solve the above problems, the method for concentrating sludge according to the present invention according to claim 1 has a multilayer structure having voids between an upper layer and a lower layer, and each layer has a plurality of wire rods. The sludge to be concentrated is put on the endless belts that are in parallel contact with each other and the holes are formed at appropriate intervals, and the dewatered water desorbed from the sludge to be concentrated by gravity dehydration while the endless belt is running. Continuously absorbs water into the voids between layers due to the capillarity between the wires in the upper layer and the openings
Desorption water that gives vibration to the endless belt and keeps it in the gap between layers
Is drained through the lower layer .
【０００８】 また、請求項２に係る本発明の汚泥の濃
縮装置は、請求項１に記載する汚泥の濃縮方法に使用す
るものであって、濃縮対象汚泥を投入する始端位置と濃
縮汚泥を排出する終端位置との間にわたって無端ベルト
を掛け渡してなり、無端ベルトは濃縮対象汚泥を載置す
るベルト本体の両側に駆動スプロケットに噛合するチェ
ーンを有し、ベルト本体が上層と下層の間に空隙を有す
る多層構造をなし、各層が複数の線材を相互に当接して
平行に配置してなり、無端ベルトの軌道上に無端ベルト
に振動および曲げを与えて排水する手段を設けたもので
ある。さらに、請求項３に係る本発明の汚泥の濃縮装置
は、無端ベルトに振動および曲げを与えて排水する手段
が往路軌道上に設けたキャリアローラーからなるもので
ある。The sludge concentrating apparatus of the present invention according to claim 2 is used in the sludge concentrating method according to claim 1.
Of the sludge to be concentrated.
An endless belt extending between the end position where the sludge is discharged
The sludge to be concentrated is placed on the endless belt.
The chain that engages with the drive sprocket
The belt body has a void between the upper layer and the lower layer.
It has a multi-layer structure in which each layer abuts multiple wire rods against each other.
The endless belts are arranged in parallel and are on the orbit of the endless belt.
It is provided with a means for giving vibration and bending to drain water . Furthermore, the sludge concentrating apparatus of the present invention according to claim 3 is a means for giving vibration and bending to an endless belt to drain the endless belt.
Is composed of a carrier roller provided on the forward path .
【０００９】[0009]
【発明の実施の形態】以下、本発明の実施の形態を図面
に基づいて説明する。図１において、重力脱水式のベル
ト型濃縮機１は、終端の駆動スプロケット２と始端の従
動スプロケット３の間に無端ベルト４を掛け渡してお
り、双方のスプロケット２、３の間に上方の往路軌道と
下方の復路軌道を形成している。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, a gravity dehydration belt type concentrator 1 has an endless belt 4 stretched between a drive sprocket 2 at the end and a driven sprocket 3 at the start, and an upward path between both sprockets 2 and 3. It forms an orbit and a downward return orbit.
【００１０】図２〜図３に示すように、無端ベルト４
は、リング状（螺旋状も可能）をなす複数の金属もしく
は樹脂製の線材４ａを相互に当接して平行に配置し、複
数の線材４ａに直線状の骨線材４ｂを挿通してベルト本
体４ｃを形成しており、ベルト本体４ｃは線材４ａから
なる上層と下層の間に空隙４ｄを有する多層構造をな
し、各層には隣接する線材４ａ間に形成される微小な開
孔４ｅを適当間隔で設けている。ベルト本体４ｃの両側
には駆動スプロケット２に噛合するチェーン４ｆを設け
ている。As shown in FIGS. 2 and 3, the endless belt 4
Is a belt body 4c in which a plurality of metal or resin wire rods 4a having a ring shape (a spiral shape is also possible) are in contact with each other and arranged in parallel, and the linear bone wire rods 4b are inserted into the plurality of wire rods 4a. The belt body 4c has a multi-layered structure having a gap 4d between an upper layer and a lower layer of the wire 4a, and each layer has minute openings 4e formed between adjacent wire 4a at appropriate intervals. It is provided. Chains 4f that mesh with the drive sprocket 2 are provided on both sides of the belt body 4c.
【００１１】往路軌道上には複数のキャリアローラー５
（板状の連続する支持材等を使用することも可能）を配
置しており、復路軌道上にはリターンプーリー６を配置
し、無端ベルト４の復路の裏面から表面（表面から裏面
も可能）に向けて洗浄水を噴射する洗浄ノズル７を配置
している。A plurality of carrier rollers 5 are provided on the outward path.
(It is also possible to use a plate-like continuous support material, etc.), the return pulley 6 is arranged on the return path, and from the back surface of the return path of the endless belt 4 (the front surface to the back surface is also possible) A cleaning nozzle 7 for injecting cleaning water toward is disposed.
【００１２】軌道の終端側には濃縮汚泥を排出するシュ
ーター８を配置しており、図４に示すように、シュータ
ー８はその底面に無端ベルト４と同様の構造をなす濾過
材９を配置している。A shooter 8 for discharging concentrated sludge is arranged on the trailing end side of the track, and as shown in FIG. 4, the shooter 8 has a filter material 9 having the same structure as the endless belt 4 on the bottom surface thereof. ing.
【００１３】以下、上記した構成における作用を説明す
る。下水処理場において発生する最初沈殿池汚泥、最終
沈殿池余剰汚泥、混合生汚泥、消化汚泥、ＯＤ余剰汚泥
等の汚泥は凝集混和槽又はライン薬注にて凝集剤を攪拌
混合した後にベルト型濃縮機１へ投入する。The operation of the above configuration will be described below. Sludge such as first settling tank sludge, final settling tank surplus sludge, mixed raw sludge, digested sludge, and OD surplus sludge generated at sewage treatment plants are belt-type concentrated after stirring and mixing the coagulant in a coagulation mixing tank or line chemical injection. Put in machine 1.
【００１４】無端ベルト４は駆動スプロケット２の回転
駆動によって従動スプロケット３との間で回転走行し、
従動スプロケット３の近傍において濃縮対象物である汚
泥を受け取る。The endless belt 4 is rotated between the driven sprocket 3 and the driven sprocket 3 by the rotational driving of the drive sprocket 2.
In the vicinity of the driven sprocket 3, the sludge which is the object of concentration is received.
【００１５】無端ベルト４が往路軌道を走行する間に汚
泥は重力脱水され、脱離水が上層の開孔４ｅ、線材４ａ
間の毛細管現象により連続して吸水されて層間の空隙４
ｄへ流入することで吸水機能が持続される。The sludge is gravity-dewatered while the endless belt 4 travels on the forward path, and the desorbed water is desorbed water in the upper layer opening 4e and wire 4a.
Water is continuously absorbed due to the capillary phenomenon between the layers, and the voids between the layers 4
The water absorption function is maintained by flowing into d.
【００１６】無端ベルト４は金属もしくは樹脂製の線材
からなり疎水性であり、駆動スプロケットとチェーン４
ｆの噛合や無端ベルト４がキャリアローラー５（板状の
連続する支持材等を使用することも可能）を通過する時
に与えられる振動および曲げによって、空隙４ｄへ流入
した脱離水は無端ベルト４の下層を通して容易に排水さ
れる。The endless belt 4 is made of a wire material made of metal or resin and is hydrophobic, and has a drive sprocket and a chain 4
The desorbed water that has flowed into the gap 4d due to the vibration and bending applied when the endless belt 4 meshes with the f and the endless belt 4 passes through the carrier roller 5 (a plate-like continuous support material can also be used). Drains easily through the lower layers.
【００１７】このように、重力脱水下において無端ベル
ト４による濃縮対象汚泥からの脱離水の吸水と排水が連
続的に繰り返されることで、短時間でのろ過が可能とな
り、汚泥の濃縮性能が高くなる。As described above, the water absorption and drainage of the desorbed water from the sludge to be concentrated by the endless belt 4 are continuously repeated under gravity dehydration, whereby filtration can be performed in a short time, and sludge concentration performance is high. Become.
【００１８】すなわち、従来のような布製の濾布である
場合には、繊維間に保持可能な水量を吸水してしまうと
吸水能力が低下し、一度吸水した水分を排水することは
困難であるが、無端ベルト４が金属もしくは樹脂製の線
材からなり疎水性であって、開孔４ｅ、線材４ａ間の毛
細管現象により吸水した脱離水を層間の空隙４ｄへ流入
させて後に振動により排水することで、吸水機能が無端
ベルト４の往路軌道の全長において常に維持される。That is, in the case of the conventional filter cloth made of cloth, if the amount of water that can be retained between the fibers is absorbed, the water absorption capacity is lowered, and it is difficult to drain the water once absorbed. However, the endless belt 4 is made of a metal or resin wire and is hydrophobic, and the desorbed water absorbed by the capillary phenomenon between the openings 4e and the wire 4a is allowed to flow into the space 4d between the layers and then drained by vibration. Therefore, the water absorbing function is always maintained over the entire length of the forward path of the endless belt 4.
【００１９】濃縮した濃縮汚泥は駆動スプロケット２に
おいて無端ベルト４が復路軌道へ反転するときにシュー
ター８へ排出される。濃縮汚泥の排出後に無端ベルト４
に残留する汚泥は、洗浄ノズル７から噴出する洗浄水に
よって除去される。The concentrated sludge thus concentrated is discharged to the shooter 8 when the endless belt 4 in the drive sprocket 2 reverses to the return path. Endless belt 4 after discharging concentrated sludge
The sludge remaining in the cleaning liquid is removed by the cleaning water ejected from the cleaning nozzle 7.
【００２０】金属もしくは樹脂製の線材４ａからなる無
端ベルト４は素材そのものが吸水することがなく、濾布
のように吸水による自重量の増大が起きないので、その
駆動は濃縮対象物による負荷に応じたもので良い。濾布
に比して耐久性、耐食性に優れているので維持コストを
低減できる。The endless belt 4 made of the metal or resin wire 4a does not absorb water by itself and does not increase its own weight due to water absorption unlike a filter cloth, so its driving is not affected by the load of the object to be concentrated. It is acceptable. Maintenance cost can be reduced because it is superior in durability and corrosion resistance to filter cloth.
【００２１】また、無端ベルト４は疎水性を有すること
で濃縮対象物である汚泥の剥離性が良く、復路軌道にお
いて無端ベルト４に残留する汚泥を、無端ベルト４の走
行軌道上に配置した洗浄ノズル７から噴射する洗浄流体
によって容易に排除することができる。また、シュータ
ー８の底面に無端ベルト４と同様の構造をなす濾過材を
配置しているので、シューター８において濃縮汚泥をさ
らに０．５％程度濃縮することができる。Further, since the endless belt 4 has hydrophobicity, the sludge, which is an object to be concentrated, can be easily peeled off, and sludge remaining on the endless belt 4 in the return path is washed on the running path of the endless belt 4. It can be easily removed by the cleaning fluid sprayed from the nozzle 7. Further, since the filter medium having the same structure as the endless belt 4 is arranged on the bottom surface of the shooter 8, the concentrated sludge can be further concentrated by about 0.5% in the shooter 8.
【００２２】ところで、無端ベルト４の形態と濃縮汚泥
の濃縮濃度（Ｗｔ％）および汚泥回収率（Ｗｔ％）との
間には相関が存在し、その相関は図５に示すものであ
る。濃縮濃度はシューター８から排出する濃縮汚泥中に
占める固形物量の割合である。固形物回収率は無端ベル
ト４に投入する汚泥中の固形物量に対して濃縮汚泥とし
て回収した固形物量の割合であり、次式で示すことがで
きる。By the way, there is a correlation between the form of the endless belt 4, the concentrated concentration (Wt%) and the sludge recovery rate (Wt%) of the concentrated sludge, and the correlation is shown in FIG. The concentrated concentration is the ratio of the amount of solid matter in the concentrated sludge discharged from the shooter 8. The solids recovery rate is the ratio of the amount of solids recovered as concentrated sludge to the amount of solids in the sludge fed to the endless belt 4, and can be expressed by the following formula.
【００２３】[0023]
【数１】
無端ベルト４の形態は、線材（ＳＵＳ）の径を示すメッ
シュ線径（ｍｍ）、空隙量（単位面積当たりにおける空
隙の容積：ｃｍ3／ｍ2）等によって規定することができ
る。無端ベルト４の内部の空隙の容積を厳密に測定する
ことは困難であるので、ここでは空隙量を次式で定義す
ることとし、次式においてＳＵＳの単位体積当たりの重
量として比重を使用する。[Equation 1] The form of the endless belt 4 can be defined by the mesh wire diameter (mm) indicating the diameter of the wire (SUS), the amount of voids (volume of voids per unit area: cm 3 / m 2 ), and the like. Since it is difficult to strictly measure the volume of the void inside the endless belt 4, the amount of void is defined by the following equation, and the specific gravity is used as the weight per unit volume of SUS in the following equation.
【００２４】[0024]
【数２】
図５に示すように、無端ベルト４のメッシュ線径および
空隙率が大きくなるとベルトの水抜性が良くなって濃縮
濃度が向上するが、水とともに抜ける固形物量およびベ
ルトの空隙に詰まる固形物量も増加するので固形物回収
率が減少する。このため、固形物回収率９０Ｗｔ％以上
を満たし濃縮濃度４Ｗｔ％程度を達成するメッシュ線径
の適用範囲は０．５〜２．０ｍｍ、空隙量は１．４×１
０3〜４．２×１０3ｃｍ3／ｍ2である。[Equation 2] As shown in FIG. 5, when the mesh wire diameter and the porosity of the endless belt 4 are increased, the drainage property of the belt is improved and the concentrated concentration is improved, but the amount of solids that escape with water and the amount of solids that clogging the voids of the belt also increase. As a result, the solid recovery rate decreases. Therefore, the applicable range of the mesh wire diameter that satisfies the solid recovery rate of 90 Wt% or more and achieves the concentrated concentration of about 4 Wt% is 0.5 to 2.0 mm, and the void amount is 1.4 × 1.
It is 0 3 to 4.2 × 10 3 cm 3 / m 2 .
【００２５】また、チェーン駆動であるので、従来のよ
うな緊張装置および蛇行修正装置を設ける必要がなく、
装置が簡略な構造となる。Further, since it is a chain drive, it is not necessary to provide a tensioning device and a meandering correction device as in the prior art,
The device has a simple structure.
【００２６】[0026]
【発明の効果】以上のように本発明によれば、無端ベル
トが線材からなり疎水性であって、開孔、線材間の毛細
管現象により吸水した脱離水を層間の空隙へ流入させて
後に振動により排水することで、吸水機能が無端ベルト
の往路軌道の全長において常に維持されるので、重力脱
水下において無端ベルトによる濃縮対象汚泥からの脱水
を短時間で効率良く行うことができ、汚泥の濃縮性能が
高くなる。As described above, according to the present invention, the endless belt is made of a wire rod and is hydrophobic, and the desorbed water absorbed by the pores and the capillary phenomenon between the wire rods is made to flow into the voids between the layers and vibrates later. Since the water absorption function is always maintained over the entire length of the forward path of the endless belt by draining the water, it is possible to efficiently dehydrate the sludge to be concentrated by the endless belt in a short time under gravity dehydration, and to condense the sludge. Higher performance.
【００２７】無端ベルトは疎水性を有することで濃縮対
象物である汚泥の剥離性が良く、洗浄ノズルから噴射す
る洗浄流体によって容易に排除することができる。Since the endless belt has hydrophobicity, the sludge, which is an object to be concentrated, can be easily removed, and can be easily removed by the cleaning fluid sprayed from the cleaning nozzle.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明の実施の形態におけるベルト型濃縮機を
示す模式図である。FIG. 1 is a schematic diagram showing a belt type concentrator according to an embodiment of the present invention.
【図２】同ベルト型濃縮機における無端ベルトの平面図
である。FIG. 2 is a plan view of an endless belt in the belt type concentrator.
【図３】同ベルト型濃縮機における無端ベルトの側面図
である。FIG. 3 is a side view of an endless belt in the belt type concentrator.
【図４】同ベルト型濃縮機におけるシューターを示す模
式図である。FIG. 4 is a schematic view showing a shooter in the belt type concentrator.
【図５】同ベルト型濃縮機におけるメッシュ線径と濃縮
濃度および固形物回収率との相関を示すグラフ図であ
る。FIG. 5 is a graph showing a correlation between a mesh wire diameter, a concentration and a solid matter recovery rate in the belt type concentrator.
１ ベルト型濃縮機 ２ 駆動スプロケットもしくはローラー ３ 従動スプロケットもしくはローラー ４ 無端ベルト ４ａ 線材 ４ｂ 骨線材 ４ｃ ベルト本体 ４ｄ 空隙 ４ｅ 開孔 ４ｆ チェーン ５ キャリアローラー ６ リターンプーリー ７ 洗浄ノズル ８ シューター ９ 濾過材 1 Belt type concentrator 2 Drive sprockets or rollers 3 Driven sprockets or rollers 4 endless belt 4a wire rod 4b bone wire 4c Belt body 4d void 4e Open hole 4f chain 5 carrier rollers 6 Return pulley 7 Washing nozzle 8 shooters 9 Filter media
───────────────────────────────────────────────────── フロントページの続き (72)発明者 松高 昭二 熊本県荒尾市宮内出目390 荒尾市役所 内 (72)発明者 山本 章裕 大阪府大阪市浪速区敷津東一丁目２番47 号 株式会社クボタ内 (72)発明者 吉田 泰之 大阪府大阪市浪速区敷津東一丁目２番47 号 株式会社クボタ内 (72)発明者 小寺 寛之 大阪府大阪市浪速区敷津東一丁目２番47 号 株式会社クボタ内 (72)発明者 水谷 太 大阪府大阪市浪速区敷津東一丁目２番47 号 株式会社クボタ内 (72)発明者 竹山 宏秋 大阪府大阪市浪速区敷津東一丁目２番47 号 株式会社クボタ内 (56)参考文献 特開 平５−269314（ＪＰ，Ａ) 特開 平９−24223（ＪＰ，Ａ) 特公 昭61−27088（ＪＰ，Ｂ１) (58)調査した分野(Int.Cl.7，ＤＢ名) B01D 33/00 B01D 39/08 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Shoji Matsutaka 390 Miyauchi, Aruchi-shi, Kumamoto Prefecture Arao-shi government office (72) Inventor Akihiro Yamamoto 1-247 Shikitsu-higashi, Naniwa-ku, Osaka-shi, Osaka Kubota (72) Inventor Yasuyuki Yoshida 1-47-2 Shikitsu Higashi, Naniwa-ku, Osaka-shi, Osaka Kubota Co., Ltd. (72) Hiroyuki Kodera 1-2-47 Shikizu-Higashi, Naniwa-ku, Osaka, Osaka Kubota Co., Ltd. (72) Inventor Futoshi Mizutani 1-47 Shikazu East, Naniwa-ku, Osaka City, Osaka Prefecture Kubota Co., Ltd. (72) Hiroaki Takeyama 1-chome, Shikazu East, Naniwa-ku, Osaka City, Osaka Prefecture KUBOTA Co., Ltd. (56) References JP-A-5-269314 (JP, A) JP-A-9-24223 (JP, A) JP-B-61-27088 (JP, B1) (58) Field (Int.Cl. 7 , DB name) B01D 33/00 B01D 39/08
Claims (3)
をなし、各層が複数の線材を相互に当接して平行に配置
するとともに適当間隔で開孔を形成した無端ベルト上に
濃縮対象汚泥を投入し、無端ベルトが走行する間に重力
脱水して濃縮対象汚泥から脱離した脱離水を上層の線材
間および開孔の毛細管現象によって層間の空隙へ連続し
て吸水し、走行する無端ベルトに振動を与えて層間の空
隙に保持する脱離水を下層を通して排水することを特徴
とする汚泥の濃縮方法。1. A sludge to be concentrated on an endless belt having a multi-layered structure having an air gap between an upper layer and a lower layer, each layer abutting a plurality of wire rods in parallel with each other and forming apertures at appropriate intervals. , The dewatered water desorbed from the sludge to be concentrated by gravity dehydration while the endless belt is running continuously absorbs the desorbed water between the wire rods in the upper layer and the voids between the layers due to the capillary phenomenon of the holes, and the running endless belt Vibration between the layers
A method for concentrating sludge, characterized in that desorbed water retained in a gap is discharged through a lower layer .
のであって、濃縮対象汚泥を投入する始端位置と濃縮汚
泥を排出する終端位置との間にわたって無端ベルトを掛
け渡してなり、無端ベルトは濃縮対象汚泥を載置するベ
ルト本体の両側に駆動スプロケットに噛合するチェーン
を有し、ベルト本体が上層と下層の間に空隙を有する多
層構造をなし、各層が複数の線材を相互に当接して平行
に配置してなり、無端ベルトの軌道上に無端ベルトに振
動および曲げを与えて排水する手段を設けたことを特徴
とする汚泥の濃縮装置。2. The sludge concentrating method according to claim 1, wherein the sludge to be concentrated is fed into the starting end position and the concentrated sludge.
Put an endless belt over the end position where the mud is discharged.
After being handed over, the endless belt is the place to put the sludge to be concentrated.
Chain that engages with drive sprockets on both sides of the main body
And the belt body has a gap between the upper and lower layers.
Layered structure, each layer is parallel with multiple wires abutting each other
The endless belt on the orbit of the endless belt.
A sludge concentrating device, characterized in that it is provided with means for moving and bending it to drain it .
水する手段が往路軌道上に設けたキャリアローラーから
なることを特徴とする請求項２に記載の汚泥の濃縮装
置。 3. The endless belt is ejected by vibrating and bending it.
The means for watering is from the carrier roller provided on the outward path.
The sludge concentrating device according to claim 2, wherein
Place
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002182263A JP3504252B2 (en) | 2002-06-24 | 2002-06-24 | Sludge concentration method and apparatus |
| PCT/JP2002/011325 WO2003068695A1 (en) | 2002-02-15 | 2002-10-30 | Gravity type thickener, gravity type thickening method, coagulant adding device, and coagulant adding method |
| AU2002344431A AU2002344431A1 (en) | 2002-02-15 | 2002-10-30 | Gravity type thickener, gravity type thickening method, coagulant adding device, and coagulant adding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002182263A JP3504252B2 (en) | 2002-06-24 | 2002-06-24 | Sludge concentration method and apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2004024963A JP2004024963A (en) | 2004-01-29 |
| JP3504252B2 true JP3504252B2 (en) | 2004-03-08 |
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|---|---|---|---|
| JP2002182263A Expired - Lifetime JP3504252B2 (en) | 2002-02-15 | 2002-06-24 | Sludge concentration method and apparatus |
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| JP (1) | JP3504252B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5040594B2 (en) * | 2007-10-31 | 2012-10-03 | 住友大阪セメント株式会社 | Method for reducing moisture content of dehydrated organic waste, method for converting low moisture content organic waste into fuel, biomass fuel, and facility for reducing moisture content of dehydrated organic waste |
| CN116986783B (en) * | 2023-09-27 | 2023-12-22 | 广东顺德环境科学研究院有限公司 | Environment-friendly sludge dewatering treatment device and application method thereof |
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