JPH06238110A - Solid-liquid separator and solid-liquid separation method - Google Patents

Solid-liquid separator and solid-liquid separation method

Info

Publication number
JPH06238110A
JPH06238110A JP5026664A JP2666493A JPH06238110A JP H06238110 A JPH06238110 A JP H06238110A JP 5026664 A JP5026664 A JP 5026664A JP 2666493 A JP2666493 A JP 2666493A JP H06238110 A JPH06238110 A JP H06238110A
Authority
JP
Japan
Prior art keywords
solid
liquid separation
raw water
rotary drum
water
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
Application number
JP5026664A
Other languages
Japanese (ja)
Inventor
Teruo Senda
輝雄 千田
Haruhiko Yasuda
晴彦 安田
Fumio Yokoyama
文郎 横山
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.)
Toray Industries Inc
Original Assignee
Toray Industries Inc
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 Toray Industries Inc filed Critical Toray Industries Inc
Priority to JP5026664A priority Critical patent/JPH06238110A/en
Publication of JPH06238110A publication Critical patent/JPH06238110A/en
Pending legal-status Critical Current

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  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

PURPOSE:To clean raw water contg. solid bodies different in nature, such as dust and water-bloom. CONSTITUTION:An inclined type screen device 1 and a rotary drum type solid- liquid separator 2 into which intake raw water having passed through the screen device is introduced are provided. In the former, it is preferable to provide a screen 3 on whose surface raw water flows down and which consists of wedge wires in the shape of a wedge extending in the width direction perpendicularly intersecting to that where the raw water flows down and arranged parallel to each other at intervals in the length direction where the raw water flows down and a movable brush 4 which reciprocates in the width direction while sliding on the back surface of the screen. In the latter, it is preferable that it has a rotary drum into which water to be treated is introduced and on the surface of a base material consisting of fabrics or knitting, a filter layer consisting of fluff 20 of extremely fine fiber of 0.1-1mum obtained by raising the base material is formed to form a filter cloth 12 which is fitted to the rotary drum 13 so that the filter layer may be inside the rotary drum 13. The device is suitable for cleaning ponds in parks.

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、池、堀、河川、湖沼、
用水路などの水を浄化するための固液分離装置および固
液分離方法に関し、とくに、プラスチックフィルムなど
のごみ、微小な糸状の藻類、コロイド成分など異質で多
種多様な固形物を含む原水の浄化に好適である。
BACKGROUND OF THE INVENTION The present invention relates to ponds, moats, rivers, lakes,
The present invention relates to a solid-liquid separation device and a solid-liquid separation method for purifying water in waterways, etc. It is suitable.

【0002】[0002]

【従来の技術】各地の河川、湖沼、池、堀、用水路など
の水は、最近、大小の固形分による汚濁のために、複数
の固液分離機を組合わせて水を浄化せざるを得なくなっ
てきているが、それでも水の浄化が困難な場合が少なく
ない。とくに、公園の池、堀、用水路などの水は、単に
汚濁物質の大小だけではなく、汚濁の原因が水の富栄養
化傾向による藻類の増加やごみの投棄などによって多様
化し、分離する固体の大きさ、形状、態様が多岐にわた
るようになって、浄化が非常に難しくなってきた。たと
えば、吸引側のストレーナを通しポンプで原水を汲み上
げ、金網を通過させて固形物を除去する、従来で最も一
般的、かつ経済的な装置では、しばしばプラスチックフ
ィルムがストレーナに絡まって閉塞したり、糸状の藻類
が金網を詰まらせるなどして操作不能になり、その除去
と洗浄のために多大の労力を要する事態になっている。
2. Description of the Related Art Recently, water in rivers, lakes, ponds, moats, irrigation channels, etc. has to be purified by combining a plurality of solid-liquid separators because of contamination by large and small solids. Although it is disappearing, it is often difficult to purify water. In particular, water in ponds, moats, and irrigation canals of parks is not limited to the size of pollutants. With a wide variety of sizes, shapes and modes, purification has become extremely difficult. For example, in the conventional and most common and economical device that pumps raw water through a strainer on the suction side with a pump and removes solid matter through a wire mesh, a plastic film is often entangled with the strainer and clogged, Filamentous algae clog the wire mesh, making it inoperable, and a great deal of labor is required for its removal and cleaning.

【0003】[0003]

【発明が解決しようとする課題】このため、汚れの状況
に対応し、各種の分離装置を単独又は組合わせて使用し
ているが、従来使用されている固液分離装置やその組合
せでは、前記のようにプラスチックフィルム、ボトル、
大小の藻類、土砂、落葉や枯木など各種多様な固形物や
コロイド成分を、少ない労力で連続的に安定して経済的
に分離することが難しい。本発明は、この様な異質で多
様な固形物を連続的に安定して分離する、タフで経済的
な固液分離装置、および固液分離方法の提供を目的に完
成されたものである。
For this reason, various separators are used alone or in combination in response to the situation of contamination, but in the conventionally used solid-liquid separator and its combination, Like plastic film, bottle,
It is difficult to stably and economically separate a variety of solid and colloidal components such as large and small algae, sediment, deciduous leaves and dead trees with a small amount of labor. The present invention has been completed with the object of providing a tough and economical solid-liquid separation device and a solid-liquid separation method for continuously and stably separating such heterogeneous and diverse solid substances.

【0004】[0004]

【課題を解決するための手段】本発明は、原水が導入さ
れる傾斜型スクリーン装置と、この傾斜型スクリーン装
置による粗取り水が導入される回転ドラム型固液分離装
置とを備えていることを特徴とする固液分離装置を提供
する。本発明において、傾斜型スクリーン装置は、表面
を原水が流下する、原水の流下方向に対して直交する幅
方向に延び、かつ、原水が流下する長さ方向に間隔をお
いて平行に並べられた、横断面が楔形のウエッジワイヤ
からなるスクリーンを有し、かつ、このスクリーンの裏
面には、その裏面を摺擦しつつそのスクリーンの幅方向
に往復動する可動ブラシが設けられているものを用いる
ことが好ましい。また、回転ドラム型固液分離装置は、
内側に傾斜型スクリーン装置の処理水が導入される回転
胴を有し、この回転胴には、織物または編物からなる基
材の表面にその基材を直接起毛して得た太さ0.1〜1
0μmの極細繊維の立毛からなるろ層を形成してなるろ
布がそのろ層が回転胴の内側になるように装着されてい
るものを用いることが好ましい。
The present invention comprises an inclined screen device into which raw water is introduced, and a rotary drum type solid-liquid separation device into which rough water from the inclined screen device is introduced. A solid-liquid separation device is provided. In the present invention, the inclined screen device extends in a width direction in which the raw water flows down on the surface and is orthogonal to the flowing direction of the raw water, and is arranged in parallel at intervals in the length direction in which the raw water flows down. A screen having a wedge wire whose cross section is wedge-shaped, and a back surface of which is provided with a movable brush that reciprocates in the width direction of the screen while rubbing the back surface. It is preferable. In addition, the rotary drum type solid-liquid separator is
It has a rotary cylinder into which the treated water of the inclined screen device is introduced, and the rotary cylinder has a thickness of 0.1 obtained by directly raising the base material on the surface of the base material made of a woven or knitted fabric. ~ 1
It is preferable to use a filter cloth formed by forming a filter layer made of naps of ultrafine fibers of 0 μm so that the filter layer is placed inside the rotary drum.

【0005】さらに本発明は、原水を傾斜型スクリーン
装置に導入してその原水中に含まれている粗大な固形成
分を粗取りした後、その粗取り水を回転ドラム型固液分
離装置に導入して精密ろ過することを特徴とする固液分
離方法を提供する。この方法においては、粗取り水に凝
集剤を添加し、その粗取り水中に含まれているコロイド
成分を凝集フロック化した後に回転ドラム型固液分離装
置に導入することによって効果を増大することができ
る。なお、本発明において、スクリーンの表面は原水供
給側を、裏面はろ過水吐出側のことをいう。
Further, according to the present invention, raw water is introduced into an inclined screen device to roughly remove coarse solid components contained in the raw water, and then the rough water is introduced into a rotary drum type solid-liquid separator. The present invention provides a solid-liquid separation method characterized by performing microfiltration. In this method, it is possible to increase the effect by adding a flocculant to the rough water and introducing the colloidal component contained in the rough water into the rotating drum type solid-liquid separation device after flocculating and flocculating. it can. In the present invention, the front surface of the screen is the raw water supply side and the back surface is the filtered water discharge side.

【0006】[0006]

【作用と実施態様例】本発明の固液分離装置および固液
分離方法について、実施態様例を示す図面を参照しつつ
説明する。図1は、本発明の固液分離装置の実施態様例
を示す概略フローシート図である。前記の目的は、単純
で目詰りしにくいスクリーンおよび圧力損失が僅かで自
然流下または極く低揚程のポンプで給水することのでき
る傾斜型スクリーン装置1(例えば、特公平1−356
83号公報に記載のスクリーン装置)と、数〜数百μm
の固体の分離に効果的である回転ドラム型固液分離装置
2(例えば、実公平4−6807号公報に記載の回転ド
ラム型固液分離装置)とを備えている本発明の固液分離
装置を用いることによって達成される。
Actions and Examples of Embodiments A solid-liquid separation apparatus and a method for separating solids according to the present invention will be described with reference to the drawings showing embodiments. FIG. 1 is a schematic flow sheet diagram showing an embodiment example of the solid-liquid separation device of the present invention. The above-mentioned object is a simple screen that is not easily clogged and a tilted screen device 1 (for example, Japanese Patent Publication No. 1-356) that can be supplied by a natural flow or a pump with a very low head with little pressure loss.
83) and several to several hundreds of μm
Solid-liquid separation device of the present invention, which is equipped with a rotating-drum type solid-liquid separating device 2 (for example, a rotating-drum type solid-liquid separating device described in Japanese Utility Model Publication No. 4-6807) which is effective for separating solids. Is achieved by using.

【0007】まず、本発明の固液分離装置に使用する代
表的な傾斜型スクリーン装置1は、断面が楔形のウエッ
ジワイヤなどを櫛刃状に整列させて固液分離するスクリ
ーン3、およびスクリーン3を目詰りさせたりスクリー
ンに絡まった固形物を除去する作用を有するブラッシ4
から構成されている。スクリーン3を形成する部材は、
断面が楔形であって、通常、一辺が1.0〜3.0mm
の金属製ウエッジワイヤなどを使用し、表面を原水が流
下する、原水の流下方向に対して直交する幅方向に延
び、かつ、原水が流下する長さ方向に間隔をおいて平行
に並べられている。本発明に使用する場合、その間隙、
すなわちスクリーン3の目開きは、0.1〜0.8mm
が好ましい。目開きが小さすぎるとプラスチックフィル
ム、藻類や生物スライムなどによって目詰りしやすく好
ましくない。本発明においては、藻類や生物スライムな
どの一部は、敢えてスクリーン3で分離せず通過させ、
付着した固形物や水垢などの目詰りの原因になるもの
は、可動ブラッシ4によって除去する。目開きが大きす
ぎると、これらの微小な固形物による目詰りは避けられ
るが、比較的大きな土砂粒などを分離することができな
くなり、下流側の回転ドラム型固液分離装置2の目詰り
の原因になるので好ましくない。スクリーン3の取付角
度は、水平面に対し50〜75度の範囲で傾斜させるこ
とが好ましい。その表面上部に、たとえば用水池5の原
水を自然流下、または比較的低揚程のポンプ6で汲上げ
て給水する。傾斜型スクリーン装置1は、圧力損失が極
めて小さいので、ポンプ6にはプラスチックフィルムな
どが詰りにくい軸流ポンプなどを使用することができ
る。水と微粒子はスクリーン3を通過して粗取り水7と
して貯槽8に送出され、通過できない固形物9はスクリ
ーン表面をシュート10に向かって滑落し、固液が分離
される。
First, in a typical inclined screen device 1 used in the solid-liquid separation device of the present invention, a screen 3 for separating solid-liquid by aligning wedge wires having a wedge-shaped cross section in a comb-like shape. Brush 4 that has the effect of clogging the screen and removing solids entangled in the screen
It consists of The members forming the screen 3 are
Wedge-shaped cross section, usually 1.0 to 3.0 mm on a side
Using a metal wedge wire etc. of, the raw water flows down the surface, extends in the width direction orthogonal to the flow direction of the raw water, and is arranged in parallel at intervals along the length direction of the raw water. There is. When used in the present invention, the gap,
That is, the opening of the screen 3 is 0.1 to 0.8 mm
Is preferred. If the openings are too small, it is not preferable because the plastic film, algae, biological slime and the like tend to cause clogging. In the present invention, some of the algae, biological slime, etc. are allowed to pass without being separated by the screen 3,
Movable brush 4 removes solid substances and water stains that cause clogging. If the openings are too large, clogging by these minute solids can be avoided, but it becomes impossible to separate relatively large particles of earth and sand, and clogging of the rotary drum type solid-liquid separation device 2 on the downstream side becomes impossible. It is not preferable because it causes the problem. The mounting angle of the screen 3 is preferably inclined within a range of 50 to 75 degrees with respect to the horizontal plane. The raw water of the water reservoir 5, for example, is supplied to the upper surface of the surface by natural flow or by a pump 6 having a relatively low head. Since the inclined screen device 1 has an extremely small pressure loss, it is possible to use an axial flow pump or the like that is unlikely to be clogged with a plastic film or the like as the pump 6. Water and fine particles pass through the screen 3 and are sent to the storage tank 8 as rough water 7, and the solid matter 9 that cannot pass through slides down the screen surface toward the chute 10 to separate solid-liquid.

【0008】可動ブラシス4は、クリーン3の裏面に、
裏面を摺擦しつつそのスクリーンの幅方向に往復動する
ようにして取り付けられている。連続または間欠的に摺
擦して、目詰りを防除する。スクリーン3に平行な回転
軸を有する円柱状の回転ブラッシ4を用いれば、その側
面でスクリーン3の目詰りを効率的に除去することがで
きるので好ましい。ブラッシ4の材質には、各種の天然
繊維や合成繊維を使用することができるが、なかでも弾
性強度が高く、水がかかる状態でもスクリーンで分離さ
れているプラスチックフィルムなどを効果的に除去でき
るポリエステルが好ましい。
The movable brushes 4 are provided on the back surface of the clean 3,
It is attached so as to reciprocate in the width direction of the screen while rubbing the back surface. Rub continuously or intermittently to prevent clogging. It is preferable to use a cylindrical rotary brush 4 having an axis of rotation parallel to the screen 3 because it is possible to efficiently remove the clogging of the screen 3 on its side surface. As the material of the brush 4, various kinds of natural fibers and synthetic fibers can be used. Among them, the polyester has high elastic strength and can effectively remove the plastic film separated by the screen even under the condition of being splashed with water. Is preferred.

【0009】次に、回転ドラム型固液分離装置2を図1
を参照して説明する。傾斜型スクリーン装置1で浄化さ
れた粗取り水は、給水配管11からろ布12を装着して
回転する円筒状の回転胴13の内側に送入される。この
回転胴13には、織物または編物からなる基材の表面に
その基材を直接起毛して得た太さ0.1〜10μmの極
細繊維の立毛20からなるろ層を形成してなるろ布12
がそのろ層が回転胴の内側になるように装着されてい
る。導入された粗取り水は、回転胴13内の液面とこれ
よりも低い受槽14の液面との差圧Δpによってろ布1
2を通過し、浄水となって受槽14側に導出される。そ
の際、粗取り水中の固形分は、ろ布12で分離され、付
着した固形物は、ノズル15から噴射される逆洗水で逆
洗され、固形物を含む排水として排水配管16を径て系
外に排出される。しかし、原水やろ布の種類によって
は、ろ布に付着した固形物を逆洗で除去することが困難
な場合がある。この場合には、回転胴13の内側に、ろ
布12表面に向けて水を噴射し、表面に付着した固形物
を除去するための第2の噴射ノズル18を設けると効果
的である。こうして、回転ドラム型固液分離装置2によ
って固液分離された浄水は、本実施態様例では循環浄水
配管17を経て用水池5に循環されている。
Next, the rotary drum type solid-liquid separator 2 is shown in FIG.
Will be described with reference to. The rough water purified by the inclined screen device 1 is fed from the water supply pipe 11 to the inside of the rotating cylinder 13 having the filter cloth 12 and rotating. The rotary drum 13 is formed by forming a filter layer composed of raised fibers 20 of ultrafine fibers having a thickness of 0.1 to 10 μm obtained by directly raising the base material on the surface of the base material made of a woven or knitted fabric. Cloth 12
Is installed so that the filter layer is inside the rotary drum. The introduced rough water is filtered by the pressure difference Δp between the liquid level in the rotary drum 13 and the liquid level in the receiving tank 14 lower than this.
After passing through 2, it becomes purified water and is discharged to the receiving tank 14 side. At that time, the solid content in the rough water is separated by the filter cloth 12, and the adhered solid matter is backwashed with the backwash water sprayed from the nozzle 15, and the drainage pipe 16 is discharged as wastewater containing the solid matter. It is discharged outside the system. However, depending on the type of raw water or the filter cloth, it may be difficult to remove the solid matter attached to the filter cloth by backwashing. In this case, it is effective to provide a second spray nozzle 18 for spraying water toward the surface of the filter cloth 12 and removing solid matter adhering to the surface inside the rotary drum 13. In this way, the purified water that has been solid-liquid separated by the rotary drum type solid-liquid separator 2 is circulated to the water reservoir 5 through the circulation purified water pipe 17 in the present embodiment example.

【0010】本発明の固液分離装置において、回転ドラ
ム型固液分離装置2に使用するろ布12は、織物または
編物からなる基材の表面に、その基材を直接起毛して得
た太さ0.1〜10μmの極細繊維の立毛20がろ層を
形成するものである。ろ布12となる織物または編物
は、通常、太さが0.1〜10μmのポリアミド、ポリ
エステル、ポリオレフィン、ポリビニルアルコール系、
ポリフルオロエチレン、ポリアクリロニトリルなどの合
成繊維の極細繊維で構成されたものを使用する。織成や
編成の種類はとくに問わないが、織物では朱子織物が、
編物ではハーフ編のトリコット生地が起毛しやすく好ま
しい。太さが0.1μm以下の極細繊維は強度が不足
し、10μm以上の繊維は起毛後直立しやすく、良好な
ろ過層を形成しにくい難点がある。起毛方法は、従来か
らの公知の手段を用いればよい。このようなろ布12を
使用するのは、このろ布12が池や河川に発生する糸状
の微小な藻類を分離に好適である上、分離されたろ過物
がろ布12表面から剥離しやすく逆洗が容易で、長期に
わたって目詰りせず、ろ過水量を低下させないで使用で
きるからである。
In the solid-liquid separation device of the present invention, the filter cloth 12 used in the rotary drum type solid-liquid separation device 2 is obtained by directly raising the base material on the surface of the base material made of woven or knitted fabric. The naps 20 of ultrafine fibers having a thickness of 0.1 to 10 μm form a filter layer. The woven or knitted fabric to be the filter cloth 12 is usually a polyamide, polyester, polyolefin, polyvinyl alcohol-based material having a thickness of 0.1 to 10 μm,
Use is made of ultrafine synthetic fibers such as polyfluoroethylene and polyacrylonitrile. The type of weaving and knitting does not matter, but the woven fabric is satin fabric,
In a knitted fabric, a half knitted tricot fabric is preferable because it easily naps. The ultrafine fibers having a thickness of 0.1 μm or less have insufficient strength, and the fibers having a thickness of 10 μm or more are liable to stand up after raising, and thus it is difficult to form a good filtration layer. As a raising method, a conventionally known means may be used. The use of such a filter cloth 12 is suitable for separating filamentous microalgae generated in ponds and rivers, and the separated filtration product is easily separated from the surface of the filter cloth 12 This is because it is easy to wash, does not clog for a long time, and can be used without reducing the amount of filtered water.

【0011】ところで、池、堀、湖沼などには、コロイ
ド成分を多く含む原水が多い。この様な原水を処理する
には、本発明の固液分離方法を使用することが好まし
い。すなわち、以上に説明した本発明の固液分離装置を
使用するに際し、傾斜型スクリーン装置1を通過した粗
取り水に、たとえば貯槽8において、凝集剤を添加し、
攪拌混合してコロイド成分を凝集フロック化しておく。
この凝集フロックは、回転ドラム型固液分離装置2で他
の固形成分とともに容易かつ効率的に分離除去されるの
で、コロイド成分を含まない良質の浄水を得ることがで
きる。19は、凝集剤を添加する際に使用する凝集剤槽
である。
By the way, in ponds, moats, lakes and marshes, there is much raw water containing a large amount of colloidal components. To treat such raw water, it is preferable to use the solid-liquid separation method of the present invention. That is, when using the solid-liquid separation device of the present invention described above, a coagulant is added to the rough water that has passed through the inclined screen device 1, for example, in the storage tank 8,
The colloidal components are flocculated by mixing with stirring.
Since the flocculated flocs are easily and efficiently separated and removed together with other solid components by the rotary drum type solid-liquid separation device 2, good quality purified water containing no colloid component can be obtained. Reference numeral 19 denotes a flocculant tank used when adding a flocculant.

【0012】[0012]

【実施例と比較例】600m3 の貯水量を有する平均深
さが0.6mの公園池を対象に、図1に示したのと同様
の本発明の固液分離装置を用いて池の水の浄化試験を行
い、従来から公園池の浄化によく利用されている、マイ
クロストレーナと回転ドラム型固液分離装置とを組合わ
せた方法とを比較して本発明の効果を確かめた。この公
園池では、ごみや土砂の流入のほかに糸状の藻類が非常
に多く発生し、従来から各種の固液分離機が単独、また
は複数が組合わされて試験されたが、いずれも目詰りが
激しく、その除去に大きな労力を要したり、運転不能に
なったりするなどの問題があって連続使用することがで
きなかった。
[Examples and Comparative Examples] For a park pond having an average depth of 0.6 m and having a water storage capacity of 600 m 3 , the pond water using the solid-liquid separation device of the present invention similar to that shown in FIG. 1 was used. The effect of the present invention was confirmed by comparing the method of combining a microstrainer with a rotating drum type solid-liquid separation device, which has been often used for purification of park ponds. In this park pond, a large amount of filamentous algae was generated in addition to the inflow of dust and sand, and various solid-liquid separators have been tested individually or in combination in the past, but all of them were not clogged. Since it was violent, it took a lot of labor to remove it, and it became impossible to operate, so that it could not be used continuously.

【0013】ここで使用した本発明の固液分離装置は、
上流側に、表面積0.18m2 、傾斜角60度、目開き
150μmの傾斜スクリーン、およびスクリーンの裏面
側に往復移動する回転ブラシとを装着した傾斜型スクリ
ーン装置と、下流側に、2.4μmの立毛を有し立毛数
が約1000本/mmの立毛朱子織物をろ布とする回転
ドラム型固液分離装置(“トレローム”RD−750−
A1型(東レ(株)製))とから構成されていた。水中
ポンプを用い、23℃の池水を毎時10m3 の割合で汲
上げてスクリーン表面の上部に注いだ。相当量の藻類、
ごみ、落葉、土砂などがスクリーンで分離されているの
が観察されたが、回転ブラッシの作用によって、これら
の固形物は、目詰りを引起こしたり、スクリーンに絡ま
ることなくシュートに流下した。一方、回転ドラム型固
液分離装置では、長期間目詰りすることなく、安定して
アオコなどの藻類や生物スライムなどを効率よく分離す
ることができた。
The solid-liquid separation device of the present invention used here is
An inclined screen device equipped with an inclined screen having a surface area of 0.18 m 2 , an inclination angle of 60 degrees, and an opening of 150 μm on the upstream side, and a rotating brush reciprocating on the back side of the screen, and 2.4 μm on the downstream side. Rotary drum type solid-liquid separation device (“Trelom” RD-750-
A1 type (manufactured by Toray Industries, Inc.). Using a submersible pump, 23 ° C. pond water was pumped at a rate of 10 m 3 / hour and poured onto the upper part of the screen surface. A considerable amount of algae,
It was observed that dust, defoliation, sediment, etc. were separated on the screen, but due to the action of the rotating brush, these solids flowed into the chute without causing clogging or being entangled with the screen. On the other hand, the rotary drum type solid-liquid separator was able to stably and efficiently separate algae such as water-bloom and biological slime without clogging for a long period of time.

【0014】次に比較例として上流側に100メッシュ
の金網(目開き150μm)を装着した回転ドラム式の
マイクロストレーナを、下流側に実施例に用いたのと同
じ2.4μmの立毛を有し立毛数が約1000本/mm
の立毛朱子織物をろ布とする回転ドラム型固液分離装置
を組合わせて池水の浄化を試みた。実施例1と同様にし
て、マイクロストレーナに池水を供給したが、給水開始
後約30分でマイクロストレーナが目詰りし始め、やが
てろ過量が初期の1/20に低下して運転不能になっ
た。しかも、回転ドラム型固液分離装置も、目詰りのた
めに良好な運転を維持することができなかった。
Next, as a comparative example, a rotary drum type micro strainer equipped with a 100-mesh wire mesh (opening 150 μm) was provided on the upstream side, and the same 2.4 μm naps used in the example were provided on the downstream side. The number of naps is about 1000 / mm
Attempts were made to purify the pond water by combining a rotating drum type solid-liquid separation device using the napped satin woven fabric as a filter cloth. Although pond water was supplied to the micro strainer in the same manner as in Example 1, the micro strainer began to become clogged about 30 minutes after the start of the water supply, and eventually the filtration amount fell to 1/20 of the initial amount and operation became impossible. . Moreover, the rotating drum type solid-liquid separation device was also unable to maintain good operation due to clogging.

【0015】[0015]

【発明の効果】本発明の固液分離装置を使用すれば、ま
ず、目詰りしにくいスクリーンを有する傾斜型スクリー
ン装置によって、プラスチックフィルムなどのごみ、落
葉や枯木、比較的大きな藻類、土砂などを連続的に安定
して労力を要せず経済的に分離することができる。この
スクリーンを目詰りさせることなく通過した微小な糸状
の藻類などは、回転ドラム型固液分離装置で連続的に安
定して分離することができる。極細繊維の立毛からなる
ろ層を形成させた特殊なろ布を使用することによって、
従来とかくトラブルを起こしやすかった藻類を容易に逆
洗し、ろ布から除去することができ、その結果、長期間
の連続運転が可能になる。従って、本発明の固液分離装
置は、大小の異質な固形物を分離する必要のある公園の
池、堀、用水路などの水の浄化に、とくに効果的に使用
することができる。
EFFECTS OF THE INVENTION If the solid-liquid separation device of the present invention is used, first of all, dust such as plastic film, defoliation and dead trees, relatively large algae, earth and sand, etc. can be obtained by an inclined screen device having a screen that is difficult to be clogged. Continuously stable, labor-free and economically separable. The minute filamentous algae that have passed through this screen without being clogged can be continuously and stably separated by the rotating drum type solid-liquid separation device. By using a special filter cloth that has a filter layer consisting of naps of ultrafine fibers,
Algae, which have been liable to cause troubles in the past, can be easily backwashed and removed from the filter cloth, resulting in long-term continuous operation. Therefore, the solid-liquid separation device of the present invention can be used particularly effectively for purification of water in a pond, a moat, an irrigation canal, etc. of a park which needs to separate solid materials of different sizes.

【0016】また、本発明の固液分離方法は、公園の
池、堀、用水路などの水の浄化に向いているが、コロイ
ド成分を多く含む原水を効率よく浄水にすることもでき
る。すなわち、傾斜型スクリーン装置を通過した粗取り
水に、凝集剤を添加し、攪拌混合してコロイド成分を凝
集フロック化することによって、凝集フロックは、回転
ドラム型固液分離装置で他の固形成分とともに容易かつ
効率的にに分離除去される。添加する凝集剤の量は、元
の原水に直接添加して処理するよりも少量で済み、より
経済的に良質の浄水を得ることができる。
Further, although the solid-liquid separation method of the present invention is suitable for purifying water in a pond, a moat, an irrigation canal in a park, raw water containing a large amount of colloidal components can be efficiently purified. That is, by adding a flocculant to the rough water that has passed through the inclined screen device and stirring and mixing it to flocculate the colloidal components, the flocculation flocs are produced by the rotary drum type solid-liquid separation device. In addition, it is easily and efficiently separated and removed. The amount of the coagulant to be added is smaller than that of directly adding to the original raw water and treating it, and it is possible to obtain high-quality purified water more economically.

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

【図1】 本発明の固液分離システムの実施態様例を示
す概略フローシート。
FIG. 1 is a schematic flow sheet showing an embodiment example of a solid-liquid separation system of the present invention.

【符号の説明】[Explanation of symbols]

1:傾斜型スクリーン装置 2:回転ドラム型固液分
離装置 3:スクリーン 4:ブラッシ 5:用
水池 6:ポンプ 7:粗取り水 8:貯槽 9:固形物 10:シ
ュート 11:給水配管 12:ろ布 13:回
転胴 14:受槽 15:ノズル 16:排水配管 17:循環浄水配管 18:第2
の噴射ノズル 19:凝集剤槽 20:立毛
1: Inclined screen device 2: Rotating drum type solid-liquid separation device 3: Screen 4: Brush 5: Water reservoir 6: Pump 7: Rough water 8: Storage tank 9: Solid matter 10: Shoot 11: Water supply pipe 12: Filter Cloth 13: Rotating drum 14: Receiving tank 15: Nozzle 16: Drainage pipe 17: Circulating purified water pipe 18: Second
Injection nozzle 19: flocculant tank 20: nap

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 FI 技術表示箇所 B01D 33/06 35/027 C02F 1/52 ZAB Z 7824−4D 6953−4D B01D 35/02 ZAB G ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Internal reference number FI technical display location B01D 33/06 35/027 C02F 1/52 ZAB Z 7824-4D 6953-4D B01D 35/02 ZAB G

Claims (5)

【特許請求の範囲】[Claims] 【請求項1】原水が導入される傾斜型スクリーン装置
と、この傾斜型スクリーン装置による粗取り水が導入さ
れる回転ドラム型固液分離装置とを備えていることを特
徴とする固液分離装置。
1. A solid-liquid separation device comprising an inclined screen device into which raw water is introduced, and a rotary drum type solid-liquid separation device into which rough water is introduced by the inclined screen device. .
【請求項2】傾斜型スクリーン装置は、表面を原水が流
下する、原水の流下方向に対して直交する幅方向に延
び、かつ、原水が流下する長さ方向に間隔をおいて平行
に並べられた、横断面が楔形のウエッジワイヤからなる
スクリーンを有し、かつ、このスクリーンの裏面には、
その裏面を摺擦しつつそのスクリーンの幅方向に往復動
する可動ブラシが設けられている、請求項1の固液分離
装置。
2. The inclined screen device extends on a surface in a width direction orthogonal to a flow direction of raw water, and is arranged in parallel at intervals in a length direction of the raw water. Also, it has a screen made of wedge wire whose cross section is wedge-shaped, and the back surface of this screen is
The solid-liquid separation device according to claim 1, further comprising a movable brush that reciprocates in the width direction of the screen while rubbing the back surface thereof.
【請求項3】回転ドラム型固液分離装置は、内側に傾斜
型スクリーン装置の処理水が導入される回転胴を有し、
この回転胴には、織物または編物からなる基材の表面に
その基材を直接起毛して得た太さ0.1〜10μmの極
細繊維の立毛からなるろ層を形成してなるろ布がそのろ
層が回転胴の内側になるように装着されている、請求項
1または2の固液分離装置。
3. A rotary drum type solid-liquid separation device has a rotary drum into which treated water of an inclined screen device is introduced.
The rotary cylinder has a filter cloth formed by forming a filter layer made of naps of ultrafine fibers having a thickness of 0.1 to 10 μm obtained by directly raising the base material on the surface of the base material made of woven or knitted fabric. The solid-liquid separation device according to claim 1 or 2, wherein the filter layer is mounted inside the rotary cylinder.
【請求項4】原水を傾斜型スクリーン装置に導入してそ
の原水中に含まれている粗大な固形成分を粗取りした
後、その粗取り水を回転ドラム型固液分離装置に導入し
て精密ろ過することを特徴とする固液分離方法。
4. Raw water is introduced into an inclined screen device to coarsely collect coarse solid components contained in the raw water, and then the rough water is introduced into a rotary drum type solid-liquid separation device for precision A solid-liquid separation method characterized by filtering.
【請求項5】粗取り水に凝集剤を添加し、その粗取り水
中に含まれているコロイド成分を凝集フロック化した後
に回転ドラム型固液分離装置に導入する、請求項4の固
液分離方法。
5. The solid-liquid separation according to claim 4, wherein a coagulant is added to the rough water and the colloidal components contained in the rough water are flocculated and then introduced into a rotary drum type solid-liquid separator. Method.
JP5026664A 1993-02-16 1993-02-16 Solid-liquid separator and solid-liquid separation method Pending JPH06238110A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5026664A JPH06238110A (en) 1993-02-16 1993-02-16 Solid-liquid separator and solid-liquid separation method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5026664A JPH06238110A (en) 1993-02-16 1993-02-16 Solid-liquid separator and solid-liquid separation method

Publications (1)

Publication Number Publication Date
JPH06238110A true JPH06238110A (en) 1994-08-30

Family

ID=12199680

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5026664A Pending JPH06238110A (en) 1993-02-16 1993-02-16 Solid-liquid separator and solid-liquid separation method

Country Status (1)

Country Link
JP (1) JPH06238110A (en)

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WO1999067006A1 (en) * 1998-06-25 1999-12-29 Ebara Corporation Coagulation reaction device
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CN102696340A (en) * 2012-06-27 2012-10-03 福清市新大泽螺旋藻有限公司 Microalgae harvesting and dewatering method and device
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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999067006A1 (en) * 1998-06-25 1999-12-29 Ebara Corporation Coagulation reaction device
US6386752B1 (en) 1998-06-25 2002-05-14 Ebara Corporation Coagulation reaction device
KR100414609B1 (en) * 2001-11-09 2004-01-13 주식회사 제닉스엔지니어링 A System For Water Treatment Used Immersed Type Membrane
JP2009220067A (en) * 2008-03-18 2009-10-01 Ngk Insulators Ltd Method and apparatus for detoxifying heavy-metal ion simultaneously with inorganic suspended particle
CN101780347A (en) * 2009-03-31 2010-07-21 新东工业株式会社 Precoated sheet vacuum apparatus
CN102389667A (en) * 2011-08-23 2012-03-28 辽宁冶矿机械环保设备制造有限公司 Liquid-solid separating and rewashing apparatus
CN103386230A (en) * 2012-05-09 2013-11-13 刘智刚 High-efficiency self-cleaning emulsion filter system
CN102696340A (en) * 2012-06-27 2012-10-03 福清市新大泽螺旋藻有限公司 Microalgae harvesting and dewatering method and device
JP2014100121A (en) * 2012-11-22 2014-06-05 Kurita Water Ind Ltd Method for collecting microalgae having hydrocarbon productivity
WO2019058432A1 (en) * 2017-09-19 2019-03-28 株式会社Ihi Culture device
CN111065724A (en) * 2017-09-19 2020-04-24 株式会社Ihi Culture device
JPWO2019058432A1 (en) * 2017-09-19 2020-10-01 株式会社Ihi Incubator
US11421195B2 (en) 2017-09-19 2022-08-23 Ihi Corporation Culture device
CN111065724B (en) * 2017-09-19 2023-02-21 株式会社Ihi Culture device
JP2019165691A (en) * 2018-03-23 2019-10-03 理研食品株式会社 Foreign substance removing device and foreign substance removing apparatus
CN115624814A (en) * 2022-12-21 2023-01-20 山西省五台县锦程建设有限公司 Hydraulic engineering construction equipment
CN115624814B (en) * 2022-12-21 2023-03-03 山西省五台县锦程建设有限公司 Hydraulic engineering construction equipment

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