JP2003265907A - Filament-used filtration apparatus - Google Patents
Filament-used filtration apparatusInfo
- Publication number
- JP2003265907A JP2003265907A JP2002074546A JP2002074546A JP2003265907A JP 2003265907 A JP2003265907 A JP 2003265907A JP 2002074546 A JP2002074546 A JP 2002074546A JP 2002074546 A JP2002074546 A JP 2002074546A JP 2003265907 A JP2003265907 A JP 2003265907A
- Authority
- JP
- Japan
- Prior art keywords
- fiber filtration
- long fiber
- filtration device
- long
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、例えば河川水など
を原水として浄水や工業用水を製造する場合や、排水処
理等において、懸濁物質を分離する長繊維ろ過装置に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a long-filtration apparatus for separating suspended substances in the case of producing purified water or industrial water using, for example, river water as raw water or in wastewater treatment.
【０００２】[0002]
【従来の技術】従来より、砂ろ過装置、膜ろ過装置など
各種のろ過装置が水処理施設において利用されている。
この中で、多数の長繊維ろ過材を利用する長繊維ろ過装
置があり、ろ材の空隙率が大きく、ろ過速度が非常に大
きく高速のろ過処理が行えるものとして、特に浄水処理
における粗ろ過や、下水の三次処理などに利用されてい
る。なお、この長繊維ろ過装置は、特公平５−１２００
２号公報などに示されている。2. Description of the Related Art Conventionally, various filtration devices such as a sand filtration device and a membrane filtration device have been used in water treatment facilities.
Among them, there is a long fiber filtration device that uses a large number of long fiber filtration materials, the porosity of the filter medium is large, the filtration speed is very large, and it is possible to perform high-speed filtration processing, especially coarse filtration in water purification treatment, It is used for tertiary treatment of sewage. In addition, this long fiber filtration device is Japanese Patent Publication No. 5-1200.
No. 2 and the like.
【０００３】[0003]
【発明が解決しようとする課題】ここで、長繊維ろ過装
置の固形分捕捉量（設置面積当たり、１回の運転（逆洗
から次の逆洗までの運転）で捕捉される固形分重量）
は、原水中の固形分濃度、固形分の性状（特に密度）、
ろ過速度によって大きく変化する。そして、原水中の固
形分濃度と密度が高ければ高いほど、ろ過速度が遅いほ
ど固形分捕捉量は多くなる。Here, the solid content trapping amount of the long fiber filtration device (the weight of the solid content trapped in one operation (from the backwashing to the next backwashing) per installation area)
Is the concentration of solids in raw water, properties of solids (especially density),
It changes greatly depending on the filtration speed. And, the higher the solid content concentration and density in the raw water, and the slower the filtration speed, the larger the solid content capture amount.
【０００４】計画の段階において、ろ過速度を十分遅く
設定すれば、目標となる固形物捕捉量を十分維持するこ
とが可能である。しかし、このような設計では装置の処
理水量が不十分となり、現実的でない。そこで、原水の
性状などを調査して、適切なろ過速度を設定して、長繊
維ろ過装置を設計する。At the planning stage, if the filtration rate is set sufficiently low, it is possible to sufficiently maintain the target solids trapping amount. However, such a design results in an insufficient amount of treated water in the apparatus, which is not practical. Therefore, the properties of raw water are investigated, an appropriate filtration speed is set, and a long fiber filtration device is designed.
【０００５】しかし、原水の性状は変化することを避け
られず、また固形物の濃度が計画通りであって、各種の
条件によって、計画通りの固形物捕捉量とならない場合
も生じる。その場合は、通水時間が予定よりも短くな
り、洗浄頻度が増すため水回収率が低下してしまうとい
う問題がある。[0005] However, the properties of the raw water are unavoidable to change, and the concentration of solids is as planned, and depending on various conditions, the amount of captured solids may not be as planned. In this case, there is a problem that the water passage time becomes shorter than expected, and the frequency of washing increases, so that the water recovery rate decreases.
【０００６】本発明は、上記課題に鑑みなされたもので
あり、簡単な部材の付加により固形物捕捉量を十分増加
することができる長繊維ろ過装置を提供することを目的
とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a long fiber filtration device capable of sufficiently increasing the amount of solid matter trapped by adding a simple member.
【０００７】[0007]
【課題を解決するための手段】本発明は、多数の長繊維
からなる長繊維ろ過材を利用する下降流の長繊維ろ過装
置であって、内部に長繊維ろ過材を収容し、この長繊維
ろ過材の上方に原水流入口を有し、長繊維ろ過材の下方
に処理水排出口を有する長繊維ろ過装置本体と、この長
繊維ろ過装置本体内の長繊維ろ過材上方であって原水流
入口よりも下方に設けられた原水の下向き流に対しても
浮力を維持する多孔性の浮上性充填材と、前記長繊維ろ
過装置本体内の前記浮上性充填材の上方であって原水流
入口の下方に設けられた浮上性充填材の流出を防止する
網状支持体と、を設けたことを特徴とする。SUMMARY OF THE INVENTION The present invention is a downflow long-fiber filtration device utilizing a long-fiber filtration material comprising a plurality of long fibers, wherein the long-filtration material is accommodated therein, and the long-fiber filtration material is contained therein. A long fiber filtration device main body having a raw water inlet above the filter medium and a treated water discharge port below the long fiber filtration material, and a raw water flow above the long fiber filtration material inside the long fiber filtration device body; A porous buoyant filler provided below the inlet for maintaining buoyancy even with a downward flow of raw water, and a raw water inlet above the buoyant filler in the main body of the long fiber filtration device. And a net-like support member provided below the support member for preventing the floating filler from flowing out.
【０００８】このように、本発明によれば、長繊維ろ過
材の上方に浮上性充填材を設けることによって、長繊維
ろ過装置のろ過能力を高めることができる。従って、長
繊維ろ過装置の大きさや逆洗設備及び逆洗条件を変える
ことなく、比較的簡単な部材の追加で固形物捕捉量を増
大することができる。特に、既存の装置について、比較
的簡単な改造のみで固形物捕捉量を増大することが可能
となる。[0008] As described above, according to the present invention, by providing the buoyant filler above the long-fiber filtration material, the filtration capacity of the long-fiber filtration device can be increased. Therefore, the amount of captured solids can be increased by adding relatively simple members without changing the size of the long fiber filtration device, the backwashing equipment, and the backwashing conditions. In particular, it is possible to increase the amount of solids trapped in the existing apparatus only by relatively simple modification.
【０００９】また、前記浮上性充填材は、多数の円筒状
のろ過体から構成されることが好適である。これによっ
て、浮上性充填材の個別の移動が可能となり、その洗浄
が容易になる。It is preferable that the buoyant filler is composed of a large number of cylindrical filters. This allows individual movement of the buoyant filler and facilitates its cleaning.
【００１０】また、前記浮上性充填材の層高が、５０ｍ
ｍ〜１，０００ｍｍであることが好適である。これによ
って、浮上性充填材内のろ過体の移動が容易になり、効
率的な洗浄が容易になる。The height of the buoyant filler is 50 m.
It is preferable that the length is from m to 1,000 mm. This facilitates the movement of the filter in the buoyant filler and facilitates efficient cleaning.
【００１１】[0011]
【発明の実施の形態】以下、本発明の実施形態につい
て、図面に基づいて説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１２】図１は、実施形態に係る長繊維ろ過装置１
００およびその付帯施設の構成を示す図である。長繊維
ろ過装置１００の処理対象となる原水はバルブ１０２を
介し、長繊維ろ過装置本体１０４に供給される。長繊維
ろ過装置本体１０４の内部には、長繊維ろ過材１０６が
充填されている。この長繊維ろ過材１０６は、長繊維を
複数本束ねたものを多数集めたもので、繊維が長繊維ろ
過装置本体１０４内で縦方向に並ぶように充填されてい
る。長繊維ろ過材１０６の下端は、多孔体である目板１
０８に固定されている。FIG. 1 shows a long fiber filtration device 1 according to an embodiment.
It is a figure which shows the structure of 00 and its accompanying facilities. Raw water to be treated by the long fiber filtration device 100 is supplied to the long fiber filtration device main body 104 via the valve 102. The inside of the long fiber filtration device main body 104 is filled with a long fiber filtration material 106. The long fiber filter medium 106 is a collection of many bundles of a plurality of long fibers, and is filled so that the fibers are arranged in the longitudinal direction in the long fiber filtration device main body 104. The lower end of the long fiber filter medium 106 is a perforated plate 1
08.
【００１３】長繊維ろ過装置本体１０４の上部（長繊維
ろ過材１０６の上方）には、原水入口１１０が設けら
れ、バルブ１０２からの原水がここから供給される。ま
た、長繊維ろ過装置本体１０４の下部（長繊維ろ過材１
０６の下方）には、処理水出口１１２が設けられ、長繊
維ろ過材１０６によってろ過処理された処理水がここか
ら排出される。すなわち、ろ過工程において、原水入口
１１０からの原水が下降流で長繊維ろ過材１０６中を通
過し、処理水出口から処理水が排出される。A raw water inlet 110 is provided above the long fiber filtration device main body 104 (above the long fiber filtration material 106), and raw water from the valve 102 is supplied therefrom. Further, the lower part of the long fiber filtration device main body 104 (the long fiber filtration material 1).
06), a treated water outlet 112 is provided, from which treated water filtered by the long fiber filter medium 106 is discharged. That is, in the filtration step, the raw water from the raw water inlet 110 passes through the long fiber filter medium 106 in a downward flow, and the treated water is discharged from the treated water outlet.
【００１４】長繊維ろ過装置本体１０４からのろ過処理
水は、バルブ１１４を介し、長繊維ろ過水槽１１６に導
入され、ここから処理水が排出される。長繊維ろ過材１
０６は、砂ろ過層などに比べ空隙率が大きく、大きなろ
過速度を採ることができ、かつ長繊維ろ過材１０６の全
体で体積ろ過が行えるため、固形物捕捉量が大きい。The filtered water from the main body 104 of the long fiber filtration device is introduced into a long fiber filtration water tank 116 via a valve 114, from which the treated water is discharged. Filament filter media 1
No. 06 has a large porosity compared to a sand filtration layer or the like, can take a high filtration speed, and can perform volume filtration on the entire long fiber filtration material 106, and therefore has a large solid matter trapping amount.
【００１５】一方、この長繊維ろ過水槽１１６には、バ
ルブ１１８を介し、逆洗ポンプ１２０の吸い込み側が接
続されている。逆洗ポンプ１２０の吐き出し側は、長繊
維ろ過装置本体１０４の下部に設けられた逆洗水入口１
２２に接続されている。また、原水入口１１０にはバル
ブ１２４が接続されている。さらに、長繊維ろ過装置本
体１０４の下部には、逆洗空気入口１２８が設けられ、
これがブロア１３０に接続されている。そして、これら
によって逆洗が行われる。On the other hand, the suction side of the backwash pump 120 is connected to the long fiber filtration water tank 116 via a valve 118. The discharge side of the backwash pump 120 is connected to the backwash water inlet 1 provided in the lower part of the long fiber filtration device main body 104.
22. Further, a valve 124 is connected to the raw water inlet 110. Further, a backwash air inlet 128 is provided at a lower portion of the long fiber filtration device main body 104,
This is connected to the blower 130. And the backwash is performed by these.
【００１６】すなわち、逆洗工程では、バルブ１０２、
１１４を閉じ、バルブ１１８、１２４を開き、逆洗ポン
プ１２０およびブロア１３０を運転することで、長繊維
ろ過装置本体１０４の下部に逆洗水および洗浄空気が供
給され、これによって長繊維ろ過材１０６中を逆洗水お
よび洗浄空気が通過し、これによって長繊維ろ過材１０
６に捕捉されていた固形物が剥離されるとともに上方に
流れバルブ１２４から逆洗排水として排出される。長繊
維ろ過材１０６の表面に捕捉されていた固形物がこの空
気および水による逆洗によって、効果的に洗浄される。
なお、逆洗工程において、空気のみや水のみの逆洗工程
を設けることもできる。That is, in the backwashing step, the valve 102,
By closing the valve 114, opening the valves 118 and 124, and operating the backwash pump 120 and the blower 130, backwash water and washing air are supplied to the lower part of the long fiber filtration device main body 104. The backwash water and the washing air pass through the inside, and thereby the long fiber
The solid matter trapped in 6 is exfoliated and flows upward and is discharged from valve 124 as backwash wastewater. The solid matter trapped on the surface of the long fiber filter medium 106 is effectively washed by the backwash with air and water.
In the back washing step, a back washing step using only air or only water can be provided.
【００１７】なお、ろ過工程では、バルブ１０２、１１
４を開き、バルブ１１８、１２４を閉じ、逆洗ポンプ１
２０およびブロア１３０の運転を停止する。In the filtration step, the valves 102, 11
4 and close valves 118 and 124,
The operations of the blower 20 and the blower 130 are stopped.
【００１８】そして、本実施形態に係る長繊維ろ過装置
１００においては、長繊維ろ過装置本体１０４の内部の
原水入口１１０の下方であって、長繊維ろ過材１０６の
上方に浮上性充填材１３２が配置されている。また、こ
の浮上性充填材１３２の上側であって、原水入口１１０
の下方には、網状支持体１３４が配置され、この網状支
持体１３４によって浮上性充填材１３２の流出を防止し
ている。In the long fiber filtration device 100 according to the present embodiment, a buoyant filler 132 is provided below the raw water inlet 110 inside the long fiber filtration device main body 104 and above the long fiber filtration material 106. Are located. Further, above the buoyant filler 132, the raw water inlet 110
A mesh support 134 is arranged below the support member 134. The mesh support 134 prevents the buoyant filler 132 from flowing out.
【００１９】この浮上性充填材１３２は、例えばラシヒ
リングのような空隙率の高いろ過体を多数充填して形成
されており、その比重が十分小さいことで、ろ過処理時
においても浮上し、網状支持体１３４側に位置する。そ
して、逆洗時においても、網状支持体１３４が浮上性充
填材１３２の流出を防止している。浮上性充填材１３２
を構成するろ過体（ラシヒリング）としては、例えば直
径５〜１５ｍｍ、高さ５〜１５ｍｍ、厚さ１〜２ｍｍ程
度の発泡プラスチック性のものが好適である。なお、発
泡率によって比重を任意に設定できるため、ろ過処理の
際のろ過速度（空塔速度）の設計値に応じて適切比重の
ものを採用することが好適である。The buoyant filler 132 is formed by filling a large number of filters having a high porosity, such as Raschig rings, and has a sufficiently small specific gravity. It is located on the body 134 side. And also at the time of backwashing, the mesh support 134 prevents the floating filler 132 from flowing out. Floating filler 132
As a filter (Raschig ring) constituting the above, a foamed plastic material having a diameter of about 5 to 15 mm, a height of about 5 to 15 mm, and a thickness of about 1 to 2 mm is preferable. In addition, since specific gravity can be set arbitrarily depending on the foaming ratio, it is preferable to employ a material having an appropriate specific gravity according to a design value of a filtration speed (superficial velocity) in the filtration process.
【００２０】また、浮上性充填材１３２の層高は５０ｍ
ｍ〜１，０００ｍｍの範囲内とすることが好適である。
浮上性充填材１３２の層高が５０ｍｍ未満であると、懸
濁物質（固形物）の捕捉が十分でなくなり、一方１，０
００ｍｍを超えると逆洗による洗浄性が悪くなるためで
ある。The layer height of the floating filler 132 is 50 m.
It is preferable to set the range of m to 1,000 mm.
If the layer height of the buoyant filler 132 is less than 50 mm, the trapping of suspended solids (solids) will be insufficient, while 1,0
This is because when the thickness exceeds 00 mm, the cleaning property by back washing deteriorates.
【００２１】このような浮上性充填材１３２を長繊維ろ
過装置本体１０４の上部に設けることによって、長繊維
ろ過材１０６の固形物捕捉量を補って、長繊維ろ過装置
１００全体として固形物捕捉量を増加することができ
る。また、一般に長繊維ろ過装置１００の上部には、か
なりの余裕があり、浮上性充填材１３２をその余裕部に
配置することで、既存の装置の改造に好適に利用するこ
とができる。By providing such a buoyant filler 132 in the upper portion of the long fiber filtration device main body 104, the solid material capture amount of the long fiber filtration material 106 is supplemented, and the solid material capture amount of the entire long fiber filtration device 100 is increased. Can be increased. In general, there is considerable room above the long fiber filtration device 100, and by arranging the buoyant filler 132 in that space, it can be suitably used for remodeling an existing device.
【００２２】また、浮上性充填材１３２をラシヒリング
のような小型のろ過体の集合とすることによって、長繊
維ろ過材１０６の空気逆洗を含む逆洗時の浮上性充填材
１３２のろ過体が撹拌され、十分な洗浄が行える。従っ
て、長期間にわたり、十分高いろ過能力を発揮できる。Further, by forming the buoyant filler 132 as a collection of small filters such as Raschig rings, the filter of the buoyant filler 132 at the time of back washing including air back washing of the long fiber filter medium 106 can be obtained. It is stirred and sufficient washing can be performed. Therefore, a sufficiently high filtration ability can be exhibited over a long period of time.
【００２３】図２は、実施形態の長繊維ろ過装置を含む
水処理施設の構成を示す図である。地下水や、河川表流
水などを取水するための取水井１０には、原水ポンプ１
２が設けられ、ここから被処理水である原水が取水され
る。原水ポンプ１２からの原水は、混和槽１４に供給さ
れるが、この原水配管には、原水濁度計１６が設けられ
ており、この原水濁度計１６によって、被処理水である
原水の濁度が検出される。FIG. 2 is a diagram showing a configuration of a water treatment facility including the long fiber filtration device according to the embodiment. A raw water pump 1 is installed in the intake well 10 for taking in groundwater or river surface water.
2 is provided, from which raw water as the water to be treated is taken. The raw water from the raw water pump 12 is supplied to the mixing tank 14. The raw water pipe is provided with a raw water turbidity meter 16, and the raw water turbidity meter 16 controls the turbidity of the raw water to be treated. Degree is detected.
【００２４】混和槽１４には、凝集剤貯槽１８からの凝
集剤が凝集剤ポンプ２０によって供給され、また酸化剤
貯槽２２からの酸化剤が酸化剤ポンプ２４によって供給
される。ここで、凝集剤としては、ポリ塩化アルミニウ
ム（ＰＡＣ）が好適であるが、他のアルミ系や鉄系凝集
剤を利用することもでき、必要に応じてｐＨ調整剤を添
加するとよい。さらに、凝集助剤として高分子凝集剤を
添加してもよい。また、酸化剤としては、一般的に次亜
塩素酸ナトリウムが利用されるが、塩素ガスでもよい。
これによって、前塩素処理が行われる。なお、塩素系の
酸化剤でなく、オゾンなど他の酸化剤でもよく、また酸
化剤の注入を省略してもよい。混和槽１４には、撹拌機
２６が配置されており、ここで原水と凝集剤が撹拌混合
され、原水中の固形物が凝集される。The mixing tank 14 is supplied with a flocculant from a flocculant storage tank 18 by a flocculant pump 20, and an oxidant from an oxidant storage tank 22 by an oxidant pump 24. Here, as the coagulant, polyaluminum chloride (PAC) is preferable, but other aluminum-based or iron-based coagulants can be used, and a pH adjuster may be added as necessary. Further, a polymer flocculant may be added as a flocculant. As the oxidizing agent, sodium hypochlorite is generally used, but chlorine gas may be used.
Thereby, pre-chlorination is performed. Instead of the chlorine-based oxidizing agent, another oxidizing agent such as ozone may be used, and the injection of the oxidizing agent may be omitted. A stirrer 26 is disposed in the mixing tank 14, where the raw water and the coagulant are mixed by stirring, and the solids in the raw water are coagulated.
【００２５】混和槽１４からの凝集処理水は、長繊維ろ
過装置１００に供給される。この長繊維ろ過装置１００
は、上述のように長繊維ろ過装置本体１０４、長繊維ろ
過材１０６、浮上性充填材１３２等を有している。この
長繊維ろ過装置１００の処理水は、長繊維ろ過水槽１１
６に貯められる。なお、逆洗用の装置などは図示を省略
している。The flocculated water from the mixing tank 14 is supplied to the long fiber filtration device 100. This long fiber filtration device 100
Has a long fiber filtration device main body 104, a long fiber filtration material 106, a buoyant filler 132, and the like as described above. The treated water of the long fiber filtration device 100 is supplied to a long fiber filtration tank 11.
Stored at 6. The backwashing device and the like are not shown.
【００２６】長繊維ろ過水槽１１６には、ろ過水ポンプ
３０が接続されており、これによって、長繊維ろ過処理
水が二層ろ過器３２に供給される。この二層ろ過器３２
は、例えばアンスラサイトと、砂の二層からなるろ過器
であり、上述の長繊維ろ過装置１００より、精密なろ過
処理を行う。特に、本実施形態の場合には、長繊維ろ過
装置１００によって、かなりの固形物が除去されている
ため、二層ろ過器３２の固形物負荷は、非常に小さい。
そこでろ過継続時間を長くして非常に効率的なろ過処理
が行える。そして、この二層ろ過器３２の処理水とし
て、水道水として十分に濁度の低い二層ろ過処理水が得
られる。A filtered water pump 30 is connected to the long fiber filtered water tank 116, whereby long fiber filtered water is supplied to the two-layer filter 32. This two-layer filter 32
Is a filter composed of, for example, two layers of anthracite and sand, and performs a precise filtration process using the long fiber filtration device 100 described above. In particular, in the case of this embodiment, since a considerable amount of solid matter has been removed by the long fiber filtration device 100, the solid matter load of the two-layer filter 32 is very small.
Therefore, a very efficient filtration process can be performed by extending the filtration duration. Then, as the treated water of the two-layer filter 32, two-layer filtered treated water having sufficiently low turbidity as tap water is obtained.
【００２７】二層ろ過器３２の二層ろ過処理水は、二層
ろ過処理水槽３４に一旦貯留され、その後消毒剤ポンプ
３６により消毒剤貯槽３８から消毒剤が添加されて、処
理水として排出される。この処理水は、例えば配水タン
クなどを介し水道水として配水される。なお、消毒剤と
しては、次亜塩素酸ナトリウムが好適であるが、塩素ガ
スでもよい。この後塩素処理によって、配水の残留塩素
が所定濃度以上となるようにする。The double-layer filtered water of the double-layer filter 32 is temporarily stored in a double-layer filtered water tank 34, and then a disinfectant is added from a disinfectant storage tank 38 by a disinfectant pump 36 and discharged as treated water. You. This treated water is distributed as tap water via, for example, a water distribution tank. As the disinfectant, sodium hypochlorite is suitable, but chlorine gas may be used. Thereafter, by chlorine treatment, residual chlorine in the water distribution is adjusted to a predetermined concentration or more.
【００２８】本実施形態の長繊維ろ過装置１００によれ
ば、その固形物捕捉量が向上されているため、原水水質
が悪い場合においても、処理水質を十分維持して効果的
な処理が可能である。According to the long fiber filtration device 100 of the present embodiment, since the solids trapping amount is improved, even if the raw water quality is poor, the treated water quality can be sufficiently maintained and effective treatment can be performed. is there.
【００２９】[0029]
【実施例】従来例の長繊維ろ過装置と、本実施形態の実
施例の長繊維ろ過装置について、以下に示す。処理フロ
ーは、図２に示したとおりであり、従来例の長繊維ろ過
装置は、実施例の長繊維ろ過装置１００の浮上性充填材
１３２および網状支持体１３４を除去したものである。DESCRIPTION OF THE PREFERRED EMBODIMENTS A conventional long fiber filtration device and a long fiber filtration device according to an example of the present embodiment will be described below. The processing flow is as shown in FIG. 2, and the conventional long fiber filtration device is obtained by removing the buoyant filler 132 and the mesh support 134 of the long fiber filtration device 100 of the embodiment.
【００３０】この処理における条件は、
（ｉ）原水；湖沼水、原水濁度５〜２０度
（ｉｉ）処理水量；３６０ｍ３／ｄ
（ｉｉｉ）前塩素処理（酸化）；塩素注入量１．０ｍｇ
／Ｌ
（ｉｖ）凝集剤；凝集剤（ＰＡＣ）は原水濁度に比例注
入
（ｖ）長繊維ろ過装置；通水速度４８０ｍ／ｄ、ろ過損
失４０ｋＰａで洗浄
（ｖｉ）二層ろ過装置；ろ過速度１５０ｍ／ｄ
とした。The conditions for this treatment are as follows: (i) raw water; lake water, raw water turbidity 5 to 20 degrees; (ii) treated water amount; 360 m 3 / d (iii) pre-chlorination (oxidation); chlorine injection amount 1.0 mg
/ L (iv) flocculant; flocculant (PAC) injected in proportion to raw water turbidity (v) long fiber filtration device; washing at 480 m / d water flow rate and filtration loss of 40 kPa (vi) bilayer filtration device; filtration speed It was 150 m / d.
【００３１】また、従来の長繊維ろ過装置については、
径４３μｍのアクリル製長繊維ろ過材を充填密度８５ｋ
ｇ／ｍ、層高（長繊維長さ）１，５００ｍｍに充填した
ものを利用した。なお、充填密度は目板１０８の単位断
面積当たり８５ｋｇの長繊維を取り付けることを意味し
ており、層高が１．５ｍであるため、５６．７ｋｇ／ｍ
３である。Further, regarding the conventional long fiber filtration device,
Acrylic long-fiber filtration material with a diameter of 43 μm is filled at a density of 85k.
g / m and a layer height (long fiber length) of 1,500 mm were used. Note that the packing density means that 85 kg of long fibers are attached per unit cross-sectional area of the eye plate 108, and since the layer height is 1.5 m, 56.7 kg / m
3 .
【００３２】一方、実施例長繊維ろ過装置１００では、
従来例と同様の長繊維ろ過材１０６の上部にφ８ｍｍ
（直径）×Ｌ１０ｍｍ（高さ）、肉厚１．２ｍｍ、ポリ
プロピレン製、比重０．９７の浮上性充填材１３２を４
００ｍｍ充填し、目開き５ｍｍのステンレス製の網状支
持材を設置した。On the other hand, in the embodiment long fiber filtration device 100,
Φ8 mm on the upper part of the long fiber filter medium 106 similar to the conventional example
(Diameter) × L10 mm (height), wall thickness 1.2 mm, polypropylene, 4
A stainless steel net-like supporting material filled with 00 mm and having an opening of 5 mm was installed.
【００３３】また、逆洗条件は、従来例と実施例とも同
じ条件とした。すなわち、通水速度１００ｍ／ｈの水と
通水速度３００ｍ／ｈの空気同時逆洗を４分間実施後、
通水速度１００ｍ／ｈの水のみによる逆洗を行った。The backwashing conditions were the same as in the conventional example and the embodiment. That is, after simultaneous backwashing of water at a water flow rate of 100 m / h and air at a water flow rate of 300 m / h for 4 minutes,
Backwashing was performed using only water at a water flow rate of 100 m / h.
【００３４】このような従来例の長繊維ろ過装置と実施
例の長繊維ろ過装置のろ過損失の違いを図３に示す。図
のように、実施例の長繊維ろ過装置の方がろ過損失の上
昇が緩やかになり、ろ過継続時間の延長が図れている。FIG. 3 shows the difference in filtration loss between the conventional long fiber filtration device and the long fiber filtration device of the embodiment. As shown in the figure, in the long fiber filtration device of the embodiment, the increase of the filtration loss is more gradual, and the continuous filtration time is extended.
【００３５】また、逆洗条件を、従来例と実施例の装置
で同じとしたが、洗浄後の状況に差は見られなかった。The backwashing conditions were the same for the conventional apparatus and the apparatus of the embodiment, but no difference was observed in the condition after the washing.
【００３６】このように、本実施形態の装置によれば、
長繊維ろ過装置本体の大きさや逆洗設備及び逆洗条件を
変えることなく、既存の装置について比較的簡単な改造
のみで固形物捕捉量を増大することが可能となる。As described above, according to the apparatus of the present embodiment,
Without changing the size of the main body of the long fiber filtration device, the backwashing equipment, and the backwashing conditions, it is possible to increase the amount of solids captured by only a relatively simple modification of the existing device.
【００３７】[0037]
【発明の効果】以上説明したように、本発明によれば、
長繊維ろ過材の情報に浮上性充填材を設けることによっ
て、長繊維ろ過装置のろ過能力を高めることができる。
従って、長繊維ろ過装置の大きさや逆洗設備及び逆洗条
件を変えることなく、比較的簡単な部材の追加で固形物
捕捉量を増大することができる。特に、既存の装置につ
いて、比較的簡単な改造のみで固形物捕捉量を増大する
ことが可能となる。As described above, according to the present invention,
By providing a buoyant filler in the information on the long fiber filtration material, the filtration capacity of the long fiber filtration device can be increased.
Therefore, the amount of captured solids can be increased by adding relatively simple members without changing the size of the long fiber filtration device, the backwashing equipment, and the backwashing conditions. In particular, it is possible to increase the amount of solids trapped in the existing apparatus only by relatively simple modification.
【００３８】また、浮上性充填材を、多数の円筒状のろ
過体から構成することで、浮上性充填材の個別の移動が
可能となり、その洗浄が容易になる。In addition, since the buoyant filler is composed of a large number of cylindrical filters, the buoyant filler can be individually moved, and its cleaning is facilitated.
【００３９】また、浮上性充填材の層高を、５０ｍｍ〜
１，０００ｍｍとすることで、浮上性充填材内のろ過体
の移動が容易になり、効率的な洗浄が容易になる。The height of the buoyant filler is 50 mm to 50 mm.
By setting the diameter to 1,000 mm, the filter in the buoyant filler is easily moved, and efficient cleaning is facilitated.
【図１】 実施形態に係る長繊維ろ過装置の構成を示す
図である。FIG. 1 is a diagram showing a configuration of a long fiber filtration device according to an embodiment.
【図２】 実施形態に係る長繊維ろ過装置を含むシステ
ム全体の構成を示す図である。FIG. 2 is a diagram illustrating a configuration of an entire system including a long fiber filtration device according to an embodiment.
【図３】 従来例と実施例における運転時間の経過に伴
うろ過損失の上昇を示す図である。FIG. 3 is a diagram showing an increase in filtration loss with elapse of operation time in a conventional example and an example.
１００ 長繊維ろ過装置、１０４ 長繊維ろ過装置本
体、１０６ 長繊維ろ過材、１１０ 原水入口、１１２
処理水出口、１１６ 長繊維ろ過水槽、１２０逆洗ポ
ンプ、１３２ 浮上性充填材、１３４ 網状支持体。100 Filament Filtration Device, 104 Filament Filtration Device Main Body, 106 Filament Filtration Material, 110 Raw Water Inlet, 112
Treated water outlet, 116 long fiber filtration water tank, 120 backwash pump, 132 buoyant filler, 134 mesh support.
【手続補正書】[Procedure amendment]
【提出日】平成１４年３月２５日（２００２．３．２
５）[Submission date] March 25, 2002 (2002.3.2.
5)
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００３１[Correction target item name] 0031
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００３１】また、従来の長繊維ろ過装置については、
径４３μｍのアクリル製長繊維ろ過材を充填密度８５ｋ
ｇ／ｍ 2 、層高（長繊維長さ）１，５００ｍｍに充填し
たものを利用した。なお、充填密度は目板１０８の単位
断面積当たり８５ｋｇの長繊維を取り付けることを意味
しており、層高が１．５ｍであるため、５６．７ｋｇ／
ｍ3である。Further, regarding the conventional long fiber filtration device,
Acrylic long-fiber filtration material with a diameter of 43 μm is filled at a density of 85k.
g / m 2 and a layer height (long fiber length) of 1,500 mm were used. The packing density means that 85 kg of long fibers are attached per unit cross-sectional area of the eye plate 108, and since the layer height is 1.5 m, 56.7 kg /
m is 3.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｂ０１Ｄ 29/38 ５１０Ｂ ５２０Ａ ５４０ 29/08 ５１０Ｂ (72)発明者 大田 豊明 東京都江東区新砂１丁目２番８号 オルガ ノ株式会社内 Ｆターム(参考） 4D019 AA03 BA13 BB13 BB15 BD01 CB04 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) B01D 29/38 510B 520A 540 29/08 510B (72) Inventor Toyoaki Ota 1-2-2 Shinsuna, Koto-ku, Tokyo No.8 Organo Corporation F term (reference) 4D019 AA03 BA13 BB13 BB15 BD01 CB04
Claims (3)
用する下降流の長繊維ろ過装置であって、 内部に長繊維ろ過材を収容し、この長繊維ろ過材の上方
に原水流入口を有し、長繊維ろ過材の下方に処理水排出
口を有する長繊維ろ過装置本体と、 この長繊維ろ過装置本体内の長繊維ろ過材上方であって
原水流入口よりも下方に設けられた原水の下向き流に対
しても浮力を維持する多孔性の浮上性充填材と、 前記長繊維ろ過装置本体内の前記浮上性充填材の上方で
あって原水流入口の下方に設けられた浮上性充填材の流
出を防止する網状支持体と、 を設けたことを特徴とする長繊維ろ過装置。1. A downflow long-fiber filtration device using a long-fiber filtration material composed of a large number of long fibers, the long-fiber filtration material being accommodated therein, and a raw water inlet being provided above the long-fiber filtration material. A long fiber filtration device main body having a treated water discharge port below the long fiber filtration material, and provided above the long fiber filtration material inside the long fiber filtration device body and below the raw water inlet. A porous buoyant filler that maintains buoyancy against the downward flow of raw water, and a buoyancy provided above the buoyant filler in the main body of the long fiber filtration device and below the raw water inlet. A long fiber filtration device, comprising: a net-like support for preventing the outflow of the filler.
れる長繊維ろ過装置。2. The long-fiber filtration device according to claim 1, wherein the buoyant filler is composed of a large number of cylindrical filters.
であることを特徴とする長繊維ろ過装置。3. The apparatus according to claim 2, wherein the height of the buoyant filler is 50 mm to 1,000 mm.
A long fiber filtration device characterized by the following.
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|---|---|---|---|
| JP2002074546A JP3779634B2 (en) | 2002-03-18 | 2002-03-18 | Long fiber filtration device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006175342A (en) * | 2004-12-22 | 2006-07-06 | Japan Organo Co Ltd | Method of cleaning filter medium and filter system |
| JP2008289973A (en) * | 2007-05-23 | 2008-12-04 | Tookemi:Kk | Filtering apparatus |
| WO2010053051A1 (en) * | 2008-11-04 | 2010-05-14 | 栗田工業株式会社 | Filtration apparatus and water treatment equipment |
| JP2011115702A (en) * | 2009-12-02 | 2011-06-16 | Japan Organo Co Ltd | Backwashing method of long fiber filtration apparatus and long fiber filtration apparatus |
| JP2012254389A (en) * | 2011-06-07 | 2012-12-27 | Meidensha Corp | Water treatment system and method for controlling washing of water treatment system |
| JP5843071B2 (en) * | 2010-03-30 | 2016-01-13 | 栗田工業株式会社 | Water treatment equipment |
-
2002
- 2002-03-18 JP JP2002074546A patent/JP3779634B2/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006175342A (en) * | 2004-12-22 | 2006-07-06 | Japan Organo Co Ltd | Method of cleaning filter medium and filter system |
| JP4653476B2 (en) * | 2004-12-22 | 2011-03-16 | オルガノ株式会社 | Filter medium washing method and filtration system |
| JP2008289973A (en) * | 2007-05-23 | 2008-12-04 | Tookemi:Kk | Filtering apparatus |
| JP4724688B2 (en) * | 2007-05-23 | 2011-07-13 | 株式会社トーケミ | Filtration device |
| WO2010053051A1 (en) * | 2008-11-04 | 2010-05-14 | 栗田工業株式会社 | Filtration apparatus and water treatment equipment |
| JP5672447B2 (en) * | 2008-11-04 | 2015-02-18 | 栗田工業株式会社 | Filtration device and water treatment device |
| JP2011115702A (en) * | 2009-12-02 | 2011-06-16 | Japan Organo Co Ltd | Backwashing method of long fiber filtration apparatus and long fiber filtration apparatus |
| JP5843071B2 (en) * | 2010-03-30 | 2016-01-13 | 栗田工業株式会社 | Water treatment equipment |
| JP2012254389A (en) * | 2011-06-07 | 2012-12-27 | Meidensha Corp | Water treatment system and method for controlling washing of water treatment system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3779634B2 (en) | 2006-05-31 |
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