JPS6213296A - Method and apparatus for initial filtration of belt press dehydrator - Google Patents

Method and apparatus for initial filtration of belt press dehydrator

Info

Publication number
JPS6213296A
JPS6213296A JP60150695A JP15069585A JPS6213296A JP S6213296 A JPS6213296 A JP S6213296A JP 60150695 A JP60150695 A JP 60150695A JP 15069585 A JP15069585 A JP 15069585A JP S6213296 A JPS6213296 A JP S6213296A
Authority
JP
Japan
Prior art keywords
filter cloth
sludge
water
lower filter
belt press
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
JP60150695A
Other languages
Japanese (ja)
Other versions
JPH0551400B2 (en
Inventor
Hidetsugu Kurosu
黒須 秀継
Kazuo Kamezaki
亀崎 和夫
Masuhiro Sato
益弘 佐藤
Keiichiro Miyano
宮野 啓一郎
Katsunori Nishida
西田 克範
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.)
Tsukishima Kikai Co Ltd
Original Assignee
Tsukishima Kikai Co Ltd
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 Tsukishima Kikai Co Ltd filed Critical Tsukishima Kikai Co Ltd
Priority to JP60150695A priority Critical patent/JPS6213296A/en
Publication of JPS6213296A publication Critical patent/JPS6213296A/en
Publication of JPH0551400B2 publication Critical patent/JPH0551400B2/ja
Granted legal-status Critical Current

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  • Filtration Of Liquid (AREA)

Abstract

PURPOSE:To form a layer to be formed on hydrous sludge to the stabler state having uniform quality by intimately mixing the hydrous sludge by using a prescribed intimate mixer in the stage of filtering, by gravity, the hydrous sludge supplied onto an endless lower filter cloth. CONSTITUTION:A sludge supply device 7 is provided above an endless upper filter cloth 6 guided by an upper roll group 5 and the hydrous sludge supplied from the device 7 onto the filter cloth 6 is initially filtered by gravity. The hydrous sludge on the filter cloth 6 is agitated from below to above and toward the central direction of the filter cloth 6 by screw vanes of the intimate mixing device 8 disposed in a gravity filtration zone A. The layer formed on the hydrous sludge is thereby madfe uniform in quality and stabler.

Description

【発明の詳細な説明】 「産業上の利用分野」 本発明は、下水、排水等の処理によって生じる含水スラ
ッジを2枚の濾布間に受は入れて、該含水スラッジを挾
み込み加圧して脱水濾過するベルトプレス脱水機の初期
濾過方法及び装置に関する。
Detailed Description of the Invention "Industrial Application Field" The present invention involves receiving water-containing sludge generated from the treatment of sewage, waste water, etc. between two filter cloths, sandwiching the water-containing sludge, and pressurizing the water-containing sludge. The present invention relates to an initial filtration method and device for a belt press dehydrator that performs dewatering and filtration.

「従来の技術」 ベルトプレス脱水機においては、被処理物に脱水性を向
上させるための凝集剤を混和して調整した調質汚泥(含
水スラッジ)を、まず、下側濾布上に受は入れて、含水
スラッジの自重によって自然脱水する、いわゆる重力濾
過ゾーンにおいて初期濾過を行なう5次いで、この初期
濾過後、下側濾布上に形成する安定した厚さのスラッジ
層の上方から上側濾歪を重ね、該スラッジ層に徐々に圧
力を加えるウェッジゾーンを経て、加圧ロールによって
強力な挟圧を加える加圧ゾーンを通過し、上記含水スラ
ッジはスラッジケーキとなり、これにより、ケーキの最
終含水率が決定される。
``Conventional technology'' In a belt press dehydrator, tempered sludge (water-containing sludge) prepared by mixing a flocculant with the material to be treated to improve dewatering performance is first received on a lower filter cloth. Initial filtration is carried out in a so-called gravity filtration zone, where water-containing sludge is naturally dehydrated by its own weight.5 Next, after this initial filtration, the upper filtration strain is applied from above the sludge layer of a stable thickness that forms on the lower filter cloth. The water-containing sludge passes through a wedge zone where pressure is gradually applied to the sludge layer, and then through a pressure zone where strong clamping pressure is applied by pressure rolls, and the water-containing sludge becomes a sludge cake. is determined.

そして、上記ベルトプレス脱水機は、従来より、簡易な
操作性、省資源、安価等の点から広く用いられてきてお
り、脱水性能、効率等の特性の向上は著しいが、現状の
経済ペースにおいて、その脱水性能は、例えば、都市下
水の混合生汚泥のベルトプレス脱水機による脱水では、
初期含水率97.5チの場合、脱水後75%を切ること
は難しく、使用濾布、加圧ロール等を強化して、ベルト
プレス脱水機を高めても、その最終脱水ケーキ含水率は
、72%前後であるといわれている。従って、ベルトプ
レス脱水機の能力向上を図るためには、加圧力以外の脱
水性要素、すなわち、汚泥への添加凝果剤、脱水機への
供給汚泥の初期脱水率の向上等が重要であり、これらの
要素の研究に力が注がれている。本発明は、ベルトプレ
ス脱水機の重力濾過ゾーンでの初期濾過における技術的
処理方法に係わるものであるっ 従来、上記重力濾過ゾーンにおいては、実開昭58−6
6096号公報に開示するように、下側痣布上に供給す
る調質汚泥を均一な厚さにして、ウェッジゾーンにおい
て過不足なく一様に加圧できるように、スラッジの均−
供給及びスラッジ層厚の均一化方法が研究されてきたが
、これは、それらの初期濾過の技術項目が、最終的なス
ラッジケーキの含水率を決定するのに貫装な因子である
と考えられてきたからである。
The above-mentioned belt press dehydrator has been widely used due to its easy operability, resource saving, and low cost, and although its characteristics such as dehydration performance and efficiency have significantly improved, it is still not suitable at the current economic pace. , its dewatering performance is, for example, when dewatering mixed raw sludge from municipal sewage using a belt press dehydrator,
If the initial moisture content is 97.5%, it is difficult to reduce it to 75% after dehydration, and even if you strengthen the filter cloth, pressure roll, etc. and increase the belt press dehydrator, the final moisture content of the dehydrated cake will be It is said to be around 72%. Therefore, in order to improve the performance of a belt press dehydrator, it is important to consider dewatering factors other than pressure, such as adding a flocculant to the sludge and improving the initial dewatering rate of the sludge supplied to the dehydrator. , efforts are being focused on researching these factors. The present invention relates to a technical treatment method for initial filtration in the gravity filtration zone of a belt press dehydrator.
As disclosed in Japanese Patent No. 6096, the sludge is evenly distributed so that the tempered sludge supplied onto the lower blemish cloth has a uniform thickness and can be pressurized uniformly in the wedge zone without excess or deficiency.
Methods for uniformizing the feed and sludge layer thickness have been investigated, since their initial filtration technology is considered to be a pervasive factor in determining the moisture content of the final sludge cake. This is because I have come.

「発明が解決しようとする問題点J しかしながら、重力濾過ゾーンにおける含水スラッジの
ミクロ的考察と確認実験を本発明者等が行なった結果、
亀布上に形成する含水スラッジの状態が、必ずしも、均
一なスラッジの供給とスラッジ厚の均一化を行なっても
、安定しているとはいえず、スラッジ内の粗い粒子、細
かい粒子等の混在ないし集合状態によっては、最終的な
スラッジケーキの含水率を安定さ?ることかできなかっ
た。すなわち、細かい粒子等が形成する、含水スラッジ
内の抵抗の大きい層(律速層)が、濾布の近くにできる
場合、濾布から十分離れた位置にできる場合、あるいは
、粗い粒子と細かい粒子がスラッジ内に特定の層を形成
しないでほぼ均質な混在粒子をなし、スラッジの各部で
、はば均一な抵抗値のスラッジ密度状態ができる場合等
は、ベルトプレス脱水機の初期濾過において、特に重要
な因子であるとの結論に達した。
"Problems to be Solved by the Invention" However, as a result of microscopic consideration and confirmation experiments of the water-containing sludge in the gravity filtration zone, the present inventors found that
The condition of the water-containing sludge that forms on Kamefu is not necessarily stable even if a uniform sludge is supplied and the sludge thickness is made uniform, and coarse particles, fine particles, etc. are mixed in the sludge. Is the moisture content of the final sludge cake stable depending on the agglomeration state? There was nothing I could do. In other words, if a layer of high resistance (rate-limiting layer) in the water-containing sludge formed by fine particles, etc. is formed near the filter cloth, if it is formed at a position sufficiently far from the filter cloth, or if coarse particles and fine particles are formed. This is especially important in the initial filtration of a belt press dewatering machine, when the sludge does not form a specific layer but has almost homogeneous mixed particles, resulting in a sludge density state with a uniform resistance value in each part of the sludge. We came to the conclusion that this is a significant factor.

本発明は、上記事情に鑑み、上記律速層等に留息して、
初期濾過の問題点を解決しようとしたものであり、その
目的とするところは、過大な挟圧力を付加することなく
、スラッジ層の状態を安定化でき、最終スラッジケーキ
の含水率を安定的にかつ確実に低減できるベルトプレス
脱水機の初期は過方法及び装置を提供することにあろう
[問題点を解決するための手段」 上記目的を達成するために、本発明の方法は、下側ロー
ル群により案内される無端状の下側濾布の上に供給され
た含水スラッジを重力によって濾過する際に、該含水ス
ラッジを混和するものであり、また、本発明の装置は、
スラッジ供給装置と上側6厘布との間に、回転軸の周囲
に掻き上げ具を設けてなる混和装置を、下側濾布との間
に調整空間を保持した状態で配設したものである。
In view of the above circumstances, the present invention resides in the rate-limiting layer, etc., and
This was an attempt to solve the problems of initial filtration, and its purpose was to stabilize the state of the sludge layer without applying excessive squeezing pressure, and to stabilize the moisture content of the final sludge cake. [Means for solving the problems] In order to achieve the above object, the method of the present invention provides a method and apparatus for a belt press dewatering machine that can reliably reduce The apparatus of the present invention mixes the water-containing sludge when the water-containing sludge fed onto the endless lower filter cloth guided by the group is filtered by gravity.
A mixing device consisting of a scraping device provided around a rotating shaft is arranged between the sludge supply device and the upper 6-layer cloth while maintaining an adjustment space between it and the lower filter cloth. .

「作用」 本発明の初期濾過方法及び装置にあっては、含水スラッ
ジが下側濾布上に載置された際に、該含水スラッジの任
意の位置に律速層を形成した状態で初期重力濾過工程が
終了するということがな(、含水スラッジの混和操作に
よって、含水スラッジは、少なぐとも一度、フロック(
凝集粒子)を保存したまま、その形成層を破壊されて、
経時的により少ない含水状態となり、濾布上に均質で安
定した層状態を形成する。
"Operation" In the initial filtration method and apparatus of the present invention, when the water-containing sludge is placed on the lower filter cloth, the initial gravity filtration is performed with a rate-limiting layer formed at an arbitrary position of the water-containing sludge. The process never ends (by mixing the water-containing sludge, the water-containing sludge becomes flocculated (
The cambium layer is destroyed while preserving the aggregated particles),
It becomes less water-containing over time and forms a homogeneous and stable layer on the filter cloth.

「実施例」 以下、第1図と第2図に基づいて本発明の一実施例を説
明する。
"Embodiment" An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

第1図中1は、上部フレームであり、この上部フレーム
1に軸を支持された多数のローyからなる上側ロール群
2には、無端状の上側g亜6が巻き掛けられている。そ
して、上記上部フレーム1の下方に、該上部フレーム1
に対向してかつ上部フレーム1より左方(上流側)に突
出した状態で、下部フレーム4が設置されており、この
下部フレーム4に軸を支持された多数のロールからなる
下側ロール群5には、無端状の下側濾布6が巻き掛けら
れている。また、上記下側濾7F56の後端側(第1図
において左端側)の上方には、含水スラッジを該下側濾
布6上に均一に載置するためのスラッジ供給装置7が設
置されている。そして、このスラッジ供給装置7と上側
濾布3の後端(第1図において左端)との間において、
下側濾布6の上方には、下側濾布6上の含水スラッジを
まぜあわせるだめの混和装置8が配置されている。
Reference numeral 1 in FIG. 1 is an upper frame, and an endless upper roll group 2 is wound around an upper roll group 2 consisting of a large number of rows whose shafts are supported by the upper frame 1. Then, below the upper frame 1, the upper frame 1
A lower frame 4 is installed opposite to the upper frame 1 and protruding to the left (upstream side) from the upper frame 1, and a lower roll group 5 consisting of a large number of rolls whose shafts are supported by the lower frame 4. An endless lower filter cloth 6 is wrapped around it. Further, above the rear end side (left end side in FIG. 1) of the lower filter 7F56, a sludge supply device 7 is installed to uniformly place the water-containing sludge on the lower filter cloth 6. There is. Between this sludge supply device 7 and the rear end (left end in FIG. 1) of the upper filter cloth 3,
A mixing device 8 for mixing the water-containing sludge on the lower filter cloth 6 is arranged above the lower filter cloth 6.

上記混和装置8は、第2図に示すように、下側濾布6の
幅方向に平行に回転自在に設けられた回転軸8aと、該
回転軸8aに取付けられた左右一対の螺旋状のスクリュ
羽根(掻き上げ具)8bとから構成され、かつ該各スク
リュ羽根8bの螺旋方向が互いに反対方向に形成されて
いる。そして、上記回転軸8aには、モータ等の駆動装
置9が連結されており、この駆動装rft9によって、
回転軸8aが回転し、スクリュ羽根8bが、上記下側濾
布6との間に、適当な間隙(調整空間)を保持した状態
で含水スラッジをかきまぜると共に、含水スラッジを下
側濾布6の中心方向に送るようになっている。
As shown in FIG. 2, the mixing device 8 includes a rotary shaft 8a rotatably provided parallel to the width direction of the lower filter cloth 6, and a pair of left and right helical shafts attached to the rotary shaft 8a. and screw blades (raking tool) 8b, and the spiral directions of the screw blades 8b are opposite to each other. A drive device 9 such as a motor is connected to the rotating shaft 8a, and this drive device rft9 allows
The rotating shaft 8a rotates, and the screw blades 8b stir the water-containing sludge while maintaining an appropriate gap (adjustment space) between the screw blades 8b and the lower filter cloth 6. It is designed to be sent towards the center.

また、本発明に係るぺyドブレス脱水機においては、複
数の案内ロール10によって案内される下側濾布6上で
、含水スラッジの重力による初期濾過が行なわれる重力
濾過シー/Aと、上下に配置された複数の脱水ロール1
1によって、スラッジ層を徐々に挾み込み、圧力を与え
るウェッジゾーンBと、又互にジグザグに配置された複
数の加圧ロール12によって、強力な挟圧を加える加圧
ゾーンCとが順次配設されている。
In the paid breath dewatering machine according to the present invention, a gravity filtration sheet/A where initial filtration of water-containing sludge is performed by gravity on the lower filter cloth 6 guided by a plurality of guide rolls 10, and Multiple dewatering rolls arranged 1
1, a wedge zone B that gradually pinches the sludge layer and applies pressure, and a pressure zone C that applies strong clamping pressure by a plurality of pressure rolls 12 arranged in a zigzag pattern are sequentially arranged. It is set up.

なお、上記混和装置8は、重力濾過ゾーンへの長さめる
いは含水スラッジの成分の違い等に応じて、複数組設置
してもよい。また、この混和装置8は、含水スラッジの
凝集粒子(フロック)を破壊しない範囲内の操作力にす
るために、上記回転軸8aの回転数等を適宜設定する必
要があろう上記のように構成されたベルトプレス脱水機
において、スラッジ供給装置7によって、含水スラッジ
を下側濾布6上に載置すると、該含水スラッジは、案内
ロール10により案内される下側濾布6と居に移送され
ながら、その自重によって初期濾過される。この時、こ
の含水スラッジにおいて、その自然沈降作用により、適
宜位置に律速層が形成されて、重力による濾過作用を阻
害する動きが生じても、重力濾過ゾーンA内に配置され
た混和装置8のスクリュ羽根8bによって、上記下側濾
布6上の含水スラッジを下方から上方にかつ下側濾布6
の中心方向に向けてかきまぜるから、含水スラッジの形
成層がフロックを保存したまま破壊され、経時的により
少ない含水状態となる5また、上記スクリュ羽根8bが
、下側濾布6の中心方向に含水スラッジをかき寄ぜるか
ら、下側濾布6の左右の外縁より脱漏する含水スラッジ
の動きを抑制できる。
Note that a plurality of sets of the mixing devices 8 may be installed depending on the length to the gravity filtration zone or the difference in the components of the water-containing sludge. In addition, this mixing device 8 is configured as described above, in which it is necessary to appropriately set the rotation speed of the rotating shaft 8a, etc., in order to apply an operating force within a range that does not destroy the aggregated particles (flocs) of the water-containing sludge. In the belt press dehydrator, when the water-containing sludge is placed on the lower filter cloth 6 by the sludge supply device 7, the water-containing sludge is transferred to the lower filter cloth 6 guided by the guide roll 10. However, it is initially filtered by its own weight. At this time, in this water-containing sludge, a rate-limiting layer is formed at an appropriate position due to its natural settling action, and even if movement occurs that inhibits the filtration action by gravity, the mixing device 8 disposed in the gravity filtration zone A The screw blade 8b moves the water-containing sludge on the lower filter cloth 6 from below to the upper side and the lower filter cloth 6.
Since the agitation is carried out toward the center of the lower filter cloth 6, the formation layer of the water-containing sludge is destroyed while preserving the flocs, and becomes less water-containing over time. Since the sludge is stirred up, the movement of water-containing sludge leaking from the left and right outer edges of the lower filter cloth 6 can be suppressed.

このようにして、重力濾過ゾーンAにおいて、初期濾過
が行なわれた含水スラッジは、次に、ウェッジゾーンB
において、脱水ロール11により両濾布6,6の間に挾
まれ、徐々に圧力が与えられて、脱水された後、加圧ゾ
ーンCの加圧ロール12を通過することによって、より
強い挟圧力が与えられ脱水されてスラッジケーキ13と
して排出される。
In this way, the water-containing sludge that has undergone initial filtration in the gravity filtration zone A is then transferred to the wedge zone B.
, the filter cloths 6, 6 are sandwiched between the two filter cloths 6, 6 by the dewatering roll 11, pressure is gradually applied to dewater the cloths, and then the filter cloths are passed through the pressure roll 12 in the pressure zone C to create a stronger clamping force. is fed, dehydrated and discharged as a sludge cake 13.

次に、本発明の一実施例を用いて行なった実施結果につ
いて、第1表に示す。本発明の方法に便用した装置は第
2図に示すものであり、この装置の掻き上げ具8bの外
径は500酩で、かつ、外周連50771/分を与える
ために、回転軸8aを32rpaで回転さ・ぜた。また
、供試汚泥は、ろらかしめ汚泥の固形物質当り0.2〜
1,0チの高分子凝集剤を添加した調質汚泥であるっ 第1表 第1表からもわかる通り、本発明の方法によれば、過大
な挟圧カを付加することなく、最終スラッジケーキの含
水率を低くする効果があった。この効果を従来方法にお
いて挟圧カの強化によって得ようとすると、使用濾布の
張力を、10kg/cMtより15)cy/7へ増加さ
せ、かつその他の構造用部品の強度を約1.5倍増大さ
ぜる必要がおり、その結果、脱水機の重量は約1.5 
ff1に増え、がっ15チのコスト上昇を招くことにな
る。すなわち、本発明の方法によれば、構造用部品の過
大な重量増化やコストの上昇をもたらすことなく、含水
率を低減できる。
Next, Table 1 shows the results obtained using an example of the present invention. The apparatus conveniently used in the method of the present invention is shown in FIG. 2, and the outer diameter of the scraping tool 8b of this apparatus is 500 mm, and the rotating shaft 8a is set in order to provide an outer circumferential rotation of 50,771/min. It rotates at 32rpa. In addition, the test sludge was 0.2 to 0.2 to
The sludge is tempered sludge to which 1.0 g of polymer flocculant has been added.As can be seen from Table 1, according to the method of the present invention, the final sludge This had the effect of lowering the moisture content of the cake. In order to obtain this effect by strengthening the clamping force in the conventional method, the tension of the filter cloth used was increased from 10 kg/cMt to 15) cy/7, and the strength of other structural parts was increased to approximately 1.5 As a result, the weight of the dehydrator is approximately 1.5
ff1, resulting in a cost increase of 15 cm. That is, according to the method of the present invention, the water content can be reduced without causing an excessive increase in the weight or cost of the structural component.

なお、本実施例においては、掻き上げ具として、左右一
対の螺旋方向が互いに逆で連続したスクリュ羽根8bを
用いて説明したが、これに限られるものではない3例え
ば、第3図に示すように、回転軸8aに、その軸長に沿
って複数の掻き上げ棒8Cを放射状に設けたもの、ある
いは、第4図に示すように、上記掻き上げ棒8cの周面
に複数の突起?!1I8dを点状、環状、あるいは螺旋
状に付設したもの、または、第5図に示すように、上記
掻き上げ棒8Cの先端に掻き棒8eを取付けたものや第
6図に示すように掻き板8fを取付けたものでもよい。
In this embodiment, a pair of left and right screw blades 8b, which are continuous and have opposite helical directions, are used as the scraping tool, but the invention is not limited to this.3 For example, as shown in FIG. Alternatively, a plurality of scraping rods 8C are provided radially along the axial length of the rotating shaft 8a, or a plurality of protrusions are provided on the circumferential surface of the scraping rod 8c as shown in FIG. ! 1I8d attached in a dotted, annular, or spiral shape, or as shown in FIG. 5, a scraping rod 8e is attached to the tip of the scraping rod 8C, or a scraping board as shown in FIG. It may also be one with 8f attached.

また、第7図に示すように、回転軸8aの長さ方向に沿
って、支持棒8gを介して連続した螺旋状のスクリュ棒
8hを設けたり、第8図に示すように、支持棒8gに保
持された複数の掻き上げ棒(板)81を回転軸8aの軸
線に平行に、あるいは斜行してかつ相互に重畳して付設
してもよく、さらに、第9図に示すように、支持棒8g
に保持された複数の螺旋状のスクリュ棒8jを相互に重
畳して、かつそれぞれが同方向ないし異方向に旋回する
ように適宜設けてもよい。
Further, as shown in FIG. 7, a continuous spiral screw rod 8h is provided along the length direction of the rotating shaft 8a via a support rod 8g, or as shown in FIG. A plurality of scraping rods (plates) 81 held by the rotary shaft 8a may be attached parallel to the axis of the rotating shaft 8a or obliquely and superimposed on each other.Furthermore, as shown in FIG. Support rod 8g
A plurality of spiral screw rods 8j held by the screw rods 8j may be arranged so as to overlap each other and rotate in the same direction or in different directions.

「発明の効果」 以上説明したように、本発明によれば、下側ロール群に
より案内される烈端状の下側濾布の上に供給された含水
スラッジを混和するものであるから、該含水スラッジに
形成される層状態を均質化し、かつ安定化できることに
より、経時的により少ない含水状態にすることができる
。また、スラッジ供給装置と上側濾布との間に、回転軸
の周囲に掻き上げ具を設けてなる混和装置を、下側濾布
との間に調整空間を保持した状態で配設したものである
から、含水スラッジを効率良く掻きまぜることができる
上に、含水スラッジの厚さを均一化することができ、後
工程のウェッジゾーンにおいて、円滑に含水スラッジを
両急亜の間に挾み込むことができる。従って、最終スラ
ッジケーキの含水量を低減できる上に、大幅な装置の重
量化及びコストの上昇を招くことがないという優れた効
果を有する。
"Effects of the Invention" As explained above, according to the present invention, the water-containing sludge supplied onto the edge-shaped lower filter cloth guided by the lower roll group is mixed. By homogenizing and stabilizing the layer state formed in the water-containing sludge, it is possible to reduce the water content over time. In addition, a mixing device having a scraping device installed around a rotating shaft is arranged between the sludge supply device and the upper filter cloth while maintaining an adjustment space between it and the lower filter cloth. Because of this, not only can the water-containing sludge be stirred efficiently, but also the thickness of the water-containing sludge can be made uniform, and the water-containing sludge can be smoothly sandwiched between the two wedges in the wedge zone of the post-process. be able to. Therefore, it has the excellent effect of reducing the water content of the final sludge cake and not causing a significant increase in the weight or cost of the device.

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

第1図と第2図は本発明の一実施例を示すもので、第1
図はベルトプレス脱水機の概略構成図、第2図は混和装
置の側面図、第6図ないし第9図は本発明に用いる各種
の掻き上げ具を示すもので、第3図は、回転軸に掻き上
げ棒を放射状に設けた側面図、第4図は掻き上げ棒に突
起物を設けた説明図、第5図は掻き上げ棒に掻き棒を取
付けた説明図、第6図は掻き上げ棒に掻き板を取付けた
説明図、第7図は回転軸に支持棒を介して螺旋状のスク
リュ棒を設けた側面図、第8図は回転軸に支持棒を介し
て掻き上げ棒(板)を設けた側面図、第9図は回転軸に
支持棒を介して複数のスクリュ棒を設けた側面図である
。 2・・・上側ロール群、3・・・上側濾布、5・・・下
側ロール群、6・・・下側α布、7・・・スラッジ供給
装置、8・・・混和装置、8a・・・回転軸、8b・・
・スクリュ羽根(掻き上げ具)、8c・・・掻き上げ棒
、8d・・・突起物、8e・・・掻き棒、8f・・・掻
き板、8g−・支持棒、8h・・・スクリュ棒、81・
・・掻き上げ棒(板)、8j・・・スクリュ棒、A・・
・重力濾過ゾーン。
Figures 1 and 2 show one embodiment of the present invention.
The figure is a schematic diagram of the belt press dehydrator, Figure 2 is a side view of the mixing device, Figures 6 to 9 show various scraping tools used in the present invention, and Figure 3 shows the rotating shaft. Fig. 4 is an explanatory diagram of a protrusion provided on a raking bar, Fig. 5 is an explanatory diagram of a raking bar with a raking bar attached, and Fig. 6 is an explanatory diagram of a raking bar with protrusions installed. An explanatory diagram of a scraping plate attached to a rod, Figure 7 is a side view of a spiral screw rod attached to a rotating shaft via a support rod, and Figure 8 is a side view of a scraping plate attached to a rotating shaft via a supporting rod. ) is provided, and FIG. 9 is a side view showing a rotating shaft provided with a plurality of screw rods via support rods. 2... Upper roll group, 3... Upper filter cloth, 5... Lower roll group, 6... Lower α cloth, 7... Sludge supply device, 8... Mixing device, 8a ...rotation axis, 8b...
・Screw blade (raking tool), 8c... raking rod, 8d... protrusion, 8e... raking rod, 8f... raking board, 8g-- support rod, 8h... screw rod , 81・
...Scraping rod (board), 8j...Screw rod, A...
-Gravity filtration zone.

Claims (1)

【特許請求の範囲】 1)下側ロール群により案内される無端状の下側濾布の
上に含水スラッジを供給して、重力による濾過を行なつ
た後に、上側ロール群により案内される無端状の上側濾
布と上記下側濾布との間に上記スラッジを挾み込み、加
圧して、脱水するベルトプレス脱水機において、上記下
側濾布の上に供給された含水スラッジを重力によつて濾
過する際に、該含水スラッジを混和することを特徴とす
るベルトプレス脱水機の初期濾過方法。 2)下側ロール群により案内される無端状の下側濾布の
上方に、該下側濾布上に含水スラッジを供給するスラッ
ジ供給装置が設けられ、かつ該スラッジ供給装置の下流
側でかつ上記下側濾布の上方に、上側ロール群により案
内される無端状の上側濾布が設けられてなるベルトプレ
ス脱水機において、上記スラッジ供給装置と上側濾布と
の間に、回転軸の周囲に掻き上げ具を設けて構成された
混和装置が、上記下側濾布との間に調整空間を保持した
状態で配設されたことを特徴とするベルトプレス脱水機
の初期濾過装置。
[Claims] 1) Water-containing sludge is supplied onto the endless lower filter cloth guided by the lower roll group and filtered by gravity, and then the endless filter cloth guided by the upper roll group In a belt press dewatering machine that squeezes the sludge between the upper filter cloth and the lower filter cloth, pressurizes it, and dewaters it, the water-containing sludge supplied onto the lower filter cloth is pulled by gravity. An initial filtration method for a belt press dehydrator, characterized in that the water-containing sludge is mixed during filtration. 2) A sludge supply device for supplying water-containing sludge onto the lower filter cloth is provided above the endless lower filter cloth guided by the lower roll group, and on the downstream side of the sludge supply device, In a belt press dewatering machine, in which an endless upper filter cloth is provided above the lower filter cloth and guided by a group of upper rolls, a belt press is provided between the sludge supply device and the upper filter cloth, around the rotating shaft. An initial filtration device for a belt press dehydrator, characterized in that a mixing device configured with a scraping tool is disposed with an adjustment space maintained between the lower filter cloth and the lower filter cloth.
JP60150695A 1985-07-09 1985-07-09 Method and apparatus for initial filtration of belt press dehydrator Granted JPS6213296A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60150695A JPS6213296A (en) 1985-07-09 1985-07-09 Method and apparatus for initial filtration of belt press dehydrator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60150695A JPS6213296A (en) 1985-07-09 1985-07-09 Method and apparatus for initial filtration of belt press dehydrator

Publications (2)

Publication Number Publication Date
JPS6213296A true JPS6213296A (en) 1987-01-22
JPH0551400B2 JPH0551400B2 (en) 1993-08-02

Family

ID=15502415

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60150695A Granted JPS6213296A (en) 1985-07-09 1985-07-09 Method and apparatus for initial filtration of belt press dehydrator

Country Status (1)

Country Link
JP (1) JPS6213296A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014111242A (en) * 2012-12-05 2014-06-19 Metawater Co Ltd Solid-liquid separator and pressure roller
JP2014136201A (en) * 2013-01-18 2014-07-28 Metawater Co Ltd Concentrator
JP2014155892A (en) * 2013-02-14 2014-08-28 Metawater Co Ltd Sludge treatment system
JP2014184355A (en) * 2013-03-21 2014-10-02 Metawater Co Ltd Sludge treatment system
US20150251940A1 (en) * 2012-11-29 2015-09-10 Metawater Co., Ltd. Sludge dewatering system
JP2019199983A (en) * 2018-05-15 2019-11-21 株式会社プランテック Incinerator structure, and method of controlling inside temperature of incinerator

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5999092U (en) * 1982-12-20 1984-07-04 石垣機工株式会社 belt press
JPS609599A (en) * 1983-06-30 1985-01-18 Kurita Water Ind Ltd Belt press type sludge dehydrator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5999092U (en) * 1982-12-20 1984-07-04 石垣機工株式会社 belt press
JPS609599A (en) * 1983-06-30 1985-01-18 Kurita Water Ind Ltd Belt press type sludge dehydrator

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150251940A1 (en) * 2012-11-29 2015-09-10 Metawater Co., Ltd. Sludge dewatering system
US10322958B2 (en) * 2012-11-29 2019-06-18 Metawater Co., Ltd. Sludge dewatering system
JP2014111242A (en) * 2012-12-05 2014-06-19 Metawater Co Ltd Solid-liquid separator and pressure roller
JP2014136201A (en) * 2013-01-18 2014-07-28 Metawater Co Ltd Concentrator
JP2014155892A (en) * 2013-02-14 2014-08-28 Metawater Co Ltd Sludge treatment system
JP2014184355A (en) * 2013-03-21 2014-10-02 Metawater Co Ltd Sludge treatment system
JP2019199983A (en) * 2018-05-15 2019-11-21 株式会社プランテック Incinerator structure, and method of controlling inside temperature of incinerator

Also Published As

Publication number Publication date
JPH0551400B2 (en) 1993-08-02

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