JPH0725914U - Filtration media and filtration equipment - Google Patents

Filtration media and filtration equipment

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Publication number
JPH0725914U
JPH0725914U JP5724293U JP5724293U JPH0725914U JP H0725914 U JPH0725914 U JP H0725914U JP 5724293 U JP5724293 U JP 5724293U JP 5724293 U JP5724293 U JP 5724293U JP H0725914 U JPH0725914 U JP H0725914U
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Japan
Prior art keywords
water
fibers
filtration
pipe
filter medium
Prior art date
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Granted
Application number
JP5724293U
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Japanese (ja)
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JP2587981Y2 (en
Inventor
尚美 川人
秀則 茅野
康秀 中久喜
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Takenaka Corp
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Takenaka Corp
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Priority to JP1993057242U priority Critical patent/JP2587981Y2/en
Publication of JPH0725914U publication Critical patent/JPH0725914U/en
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Publication of JP2587981Y2 publication Critical patent/JP2587981Y2/en
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Abstract

(57)【要約】 【目的】 ろ過装置を大型化する必要なく、効率よく水
の浄化を行うことができ、さらに、逆洗時の処理を簡便
に行いうるろ過材及びろ過装置を提供する。 【構成】 水ろ過装置はタンクを備え、水をタンクへ供
給するパイプ12と接続されている。タンクの内部に
は、砂利を充填した砂利層16が形成され、その上に繊
維を束状に成形したポリエステル製ろ過材を充填したろ
過材層14が形成されている。さらに、砂利層16中に
ろ過材を逆洗する時に使用する空気を供給するパイプ2
2と接続された散気管26が埋設されている。タンク下
部には清澄水を再供給するためのパイプ32が接続され
ている。
(57) [Abstract] [Purpose] To provide a filter medium and a filter device capable of efficiently purifying water without having to upsize the filter device, and further capable of easily performing treatment during backwashing. [Constitution] The water filtering device has a tank and is connected to a pipe 12 for supplying water to the tank. A gravel layer 16 filled with gravel is formed inside the tank, and a filter medium layer 14 filled with a polyester filter medium in which fibers are formed into a bundle is formed thereon. Further, a pipe 2 for supplying air to be used for backwashing the filter medium into the gravel layer 16
An air diffuser tube 26 connected to 2 is buried. A pipe 32 for re-supplying clear water is connected to the lower part of the tank.

Description

【考案の詳細な説明】[Detailed description of the device]

【0001】[0001]

【産業上の利用分野】[Industrial applications]

本考案は、ろ過材、詳しくは、人工池等の水を高速度で効率よく浄化すること ができるろ過材及びそれを用いたろ過装置に関する。 The present invention relates to a filter medium, and more particularly, to a filter medium capable of efficiently purifying water in an artificial pond or the like at high speed and a filter device using the same.

【0002】[0002]

【従来の技術】[Prior art]

近年、環境美化策の一環として、人工池や人工滝をビルの前庭や屋内、工場等 の敷地内に設置することが広く行われているが、これらの人工池等の水は、通常 は閉鎖系であるため定期的な水の浄化が必要とされる。これらの閉鎖水系の水は 、飲用に使用されることは無く、外観の美化に重点がおかれているため、従来、 その浄化には、砂利、砂層をろ過材として用いた砂ろ過装置が使用されていた。 In recent years, artificial ponds and waterfalls have been widely installed as part of environmental beautification measures in the front yard of buildings, indoors, and in factories, but the water in these artificial ponds is usually closed. Since it is a system, regular purification of water is required. These closed water systems are never used for drinking, and emphasis is placed on beautifying the appearance.Therefore, sand filters using gravel and sand layers as filter media have been used for purification. It had been.

【0003】 砂利、砂層をろ過材として用いた砂ろ過装置は、低コストでの処理が可能であ る。しかしながら、ろ過を高速で行うとろ過効率が落ち、ろ過を充分に行うこと ができなかった。一方、ろ過効率を上げるためには、ろ過面積を広くしなければ ならず、ろ過装置が大容量になり狭い場所での使用に適さない等の問題点があっ た。また、従来の砂層を用いたろ過装置においては、ろ過材に付着した固形浮遊 物を洗浄するための逆洗工程において多量の水を必要とし、曝気を行う装置にお いては空気の圧力を強くしなければ、充分な固形浮遊物の除去が行えず、逆洗に 多大なエネルギーを必要としていた。A sand filter using gravel or a sand layer as a filter material can be processed at low cost. However, if the filtration is performed at a high speed, the filtration efficiency is lowered and the filtration cannot be performed sufficiently. On the other hand, in order to increase the filtration efficiency, the filtration area must be increased, and the filtration device has a large capacity, which is not suitable for use in a narrow space. In addition, a conventional filtration device using a sand layer requires a large amount of water in the backwashing process to wash the solid suspended matter adhering to the filter medium, and the aeration device requires a high air pressure. Without this, sufficient solid suspended matter could not be removed, and a large amount of energy was required for backwashing.

【0004】[0004]

【考案が解決しようとする課題】[Problems to be solved by the device]

本考案の目的は、ろ過装置の容量の拡大を必要とせず、効率よく水を浄化する ことができ、さらに、逆洗時の処理を簡便かつ迅速に行いうるろ過材及びろ過装 置を提供することにある。 An object of the present invention is to provide a filtering material and a filtering device that can efficiently purify water without requiring an increase in the capacity of the filtering device and can perform the treatment during backwashing simply and quickly. Especially.

【0005】[0005]

【課題を解決するための手段】[Means for Solving the Problems]

請求項1記載の考案は、熱可塑性の短繊維を束状となし、該束表面の繊維及び 内部の繊維の一部を融着固定して紐状とし、これを切断して短柱状に成形したこ とを特徴とするろ過材に関する。 According to the first aspect of the present invention, the thermoplastic short fibers are formed into a bundle, and the fibers on the surface of the bundle and a part of the fibers inside are fused and fixed to form a string, which is cut into a short column shape. The present invention relates to a filter material characterized by shikoto.

【0006】 請求項2記載の考案は、柱状のタンクの上部へ未ろ水を供給するパイプと、内 部に水をろ過するためのろ過材と、下部からろ過された水を排出するための流量 調節弁を備えたパイプと、を備えたろ過装置において、前記ろ過材として、熱可 塑性の短繊維を束状となし、該束表面の繊維及び内部の繊維の一部を加熱融着し て成形したろ過材を用いたことを特徴とするろ過装置に関する。According to a second aspect of the present invention, a pipe for supplying unfiltered water to the upper part of the columnar tank, a filter material for filtering the water inside, and a drain for discharging the filtered water from the lower part. In a filtration device equipped with a pipe equipped with a flow rate control valve, as the filtration material, thermoplastic short fibers are formed into a bundle, and the fibers on the surface of the bundle and a part of the fibers inside are fused by heating. The present invention relates to a filtration device using a filter material formed by molding.

【0007】[0007]

【作用】[Action]

本考案のろ過材は、熱可塑性の短繊維を束状となし、該束表面の繊維及び内部 の繊維の一部を融着固定して紐状とし、これを切断して短柱状に成形しているた め、浮遊固形物質を効率よく浄化することができる。さらに、素材として比重の 軽い熱可塑性の短繊維を使用しているため、逆洗時に、コンプレッサー等の空気 供給手段によって供給された空気を砂利層内に設置された散気管より噴出し、同 時に下部のパイプから逆洗水を流入させることにより、ろ過材が容易に水中に分 散され、ろ過材中に蓄積された浮遊固形物質の再分離、除去を簡便かつ迅速に行 うことができる。また、本考案のろ過装置は、上記ろ過材を密にした状態で使用 し、急速ろ過を可能としている。 The filter material of the present invention is made of thermoplastic short fibers in a bundle, and the fibers on the surface of the bundle and a part of the fibers inside are fused and fixed to form a string, which is cut into a short column shape. Therefore, suspended solid substances can be efficiently purified. Furthermore, since thermoplastic short fibers with a low specific gravity are used as the material, during backwashing, the air supplied by an air supply means such as a compressor is ejected from an air diffusing pipe installed in the gravel layer, and at the same time. By injecting backwash water from the lower pipe, the filter medium can be easily dispersed in water, and the suspended solid substances accumulated in the filter medium can be easily and quickly re-separated and removed. In addition, the filtration device of the present invention enables rapid filtration by using the filtration material in a dense state.

【0008】[0008]

【実施例】【Example】

以下、本考案を更に詳しく説明する。 Hereinafter, the present invention will be described in more detail.

【0009】 図1に示すように、本考案のろ過材1は、熱可塑性の短繊維を束状となし、該 束表面の繊維及び内部の繊維の一部を融着固定して紐状とし、これを切断して短 柱状に成形したことを特徴とするものである。ろ過材は、通常、粒径が細かい程 、浮遊固形物質を良好に除去しうるものであるが、粒径が細かすぎると、後述す るろ過材層14での保持が困難となり、流失し易くなり、粒径を大きくすると、 細かい浮遊固形物質を除去することが不可能となる。そこで、本考案のろ過材1 は、熱可塑性繊維の短繊維を、好ましくはカードして繊維方向を一定にし、束状 に成形して、繊維の集合体とし、これを切断して短柱状に成形して用いた。熱可 塑性の短繊維の素材としては、ポリエステル、ポリプリロピレン、ポリアミド、 ポリビニルアルコール、ポリアクリル等が挙げら、これらは、単独でも2種以上 の繊維を混合して用いてもよい。また、短繊維は、通常の繊維形状であっても、 中空繊維であっても、繊維表面にクラック等を有する変形繊維であってもよい。 繊維表面に凹凸を有する変形繊維や中空繊維は、表面積が大きくなり、細かい浮 遊固形物質の除去が効果的に行えるため、好ましく用いられる。 (実施例1) 本実施例における熱可塑性の単繊維としてポリエステルを用いたろ過材1につ いて説明する。本実施例のろ過材1は、4d(デニール)で長さ102mmのポ リエステル中空繊維と3dで長さ76mmの通常のポリエステル繊維とを1:1 の割合で混合してカードスライバーを形成し、赤外線で余熱後、130℃のパイ プヒーターを通して、繊維間及びスライバー表面を熱融着させて直径6mmの繊 維束を成形し、冷却固化した。この繊維束をカッターで長さ6mmに切断して、 図1に示す如き円柱形の繊維状ポリエステルろ過材1としたものである。得られ たろ過材1の繊維比重は、1.38、嵩高密度は68kg/m3 であった。As shown in FIG. 1, the filter medium 1 of the present invention comprises thermoplastic short fibers in a bundle, and fibers on the surface of the bundle and a part of the fibers inside are fused and fixed to form a string. It is characterized by being cut into a short columnar shape. The smaller the particle size of the filter medium is, the better it is possible to remove the suspended solid matter, but if the particle size is too fine, it becomes difficult to retain it in the filter medium layer 14 to be described later and is easily washed away. Therefore, if the particle size is increased, it becomes impossible to remove fine suspended solids. Therefore, in the filter medium 1 of the present invention, short fibers of thermoplastic fibers are preferably carded to have a constant fiber direction and formed into a bundle to form a fiber aggregate, which is cut into short columnar shapes. It was molded and used. Examples of the material of the thermo-plastic short fiber include polyester, polypropylene, polyamide, polyvinyl alcohol, polyacrylic and the like, and these may be used alone or in combination of two or more kinds of fibers. Further, the short fiber may be a normal fiber shape, a hollow fiber, or a deformed fiber having a crack or the like on the fiber surface. Deformed fibers or hollow fibers having irregularities on the fiber surface have a large surface area and can effectively remove fine floating solid substances, and are therefore preferably used. (Example 1) A filter medium 1 using polyester as a thermoplastic single fiber in this example will be described. The filter medium 1 of the present embodiment is a card sliver formed by mixing polyester hollow fibers having a length of 102 mm with 4 d (denier) and ordinary polyester fibers having a length of 76 mm with 3 d at a ratio of 1: 1. After preheating with infrared rays, the fibers and the sliver surface were heat-fused through a pipe heater at 130 ° C. to form a fiber bundle with a diameter of 6 mm, which was cooled and solidified. This fiber bundle was cut into a length of 6 mm with a cutter to obtain a cylindrical fibrous polyester filter material 1 as shown in FIG. The filter material 1 thus obtained had a fiber specific gravity of 1.38 and a bulk density of 68 kg / m 3 .

【0010】 ポリエステルろ過材1は、カードされた、すなわち、一定方向に方向揃えされ 、束ねられた繊維の集合体からなり、素材繊維の一部に中空ポリエステル繊維を 用いている。このため、繊維比重が低く、表面積が大きくなり、浮遊固形物質の 除去を効率よく行うことができ、特に高速ろ過に適する。また、繊維が部分的に 融着しているため、長期間使用しても、ろ過材が流失したり、劣化することがな い。The polyester filter material 1 is composed of an aggregate of carded fibers, that is, aligned in a certain direction and bundled, and hollow polyester fibers are used as a part of the raw material fibers. Therefore, the specific gravity of the fiber is low, the surface area is large, and the suspended solid substances can be removed efficiently, which is particularly suitable for high-speed filtration. In addition, since the fibers are partially fused, the filter media will not be washed away or deteriorate even after long-term use.

【0011】 本実施例においては、繊維状ポリエステルろ過材1は、直径は6mm、長さ6 mmの円柱形のものを用いているが、繊維がカードされ束状に成形されていれば 、束の断面形状は円形に限定されず、例えば、多角形でも、星型でも、花弁状で もよく、さらには、束が中空であってもよい。また、それらの束状繊維集合体を 切断する切断面は、繊維方向に垂直であっても、斜めであってもよく、切断口が 平面状をなさず、凹凸をなしていてもよい。なかでも、円柱形のものが簡便に製 造することができる。In the present embodiment, the fibrous polyester filter material 1 is a cylindrical one having a diameter of 6 mm and a length of 6 mm, but if the fibers are carded and formed into a bundle, The sectional shape of is not limited to a circle, and may be, for example, polygonal, star-shaped, petal-shaped, and the bundle may be hollow. Further, the cut surface for cutting the bundled fiber assembly may be perpendicular to the fiber direction or may be oblique, and the cutting edge may not have a planar shape but may have irregularities. Among them, the cylindrical shape can be easily manufactured.

【0012】 表1は、本考案の円柱形のろ過材のサイズを変化させ、固形浮遊物質の除去率 を測定したものである。固形浮遊物質としては沖縄赤土を110℃で乾燥後、0 .42mmメッシュを通過したものを用いた。透過流速は50m/hとしてろ過 を行った。[0012] Table 1 shows the removal rate of solid suspended matter measured by changing the size of the cylindrical filter material of the present invention. As a solid suspended matter, Okinawa red soil was dried at 110 ° C and then 0. The one that passed through a 42 mm mesh was used. Filtration was performed at a permeation flow rate of 50 m / h.

【0013】[0013]

【表1】 [Table 1]

【0014】 表1に示す如く、ろ過材が円柱形の場合、浮遊固形物質の含有量に係わらず、 小型のろ過材が除去率が高かった。すなわち、固形浮遊物質の除去効率の観点か ら、その直径は約2〜約10mm程度が好ましく、特に、約3〜約6mm程度が 好ましい。直径が10mmを超えるとろ過効率が悪化し、2mm未満であると、 逆洗時に流失し易くなり好ましくない。As shown in Table 1, when the filter medium had a cylindrical shape, the removal rate of the small filter medium was high regardless of the content of the suspended solid substances. That is, the diameter is preferably about 2 to about 10 mm, and more preferably about 3 to about 6 mm, from the viewpoint of removal efficiency of solid suspended matter. If the diameter exceeds 10 mm, the filtration efficiency deteriorates, and if it is less than 2 mm, it is easily washed out during backwashing, which is not preferable.

【0015】 また、長さも同様に、約2〜約10mmが好ましく、特に、約3〜約6mm程 度が好ましい。 (実施例2) 図2は、本実施例のろ過装置を示す斜視図、図3は、概略断面図である。Similarly, the length is preferably about 2 to about 10 mm, and more preferably about 3 to about 6 mm. (Embodiment 2) FIG. 2 is a perspective view showing a filtration device of the present embodiment, and FIG. 3 is a schematic sectional view.

【0016】 ろ過装置10は円筒形状のタンク11を備え、このタンク11の上部周壁部に は、人工池等の水を供給するパイプ12が接続されている。パイプ12の吐出口 は上方へ屈曲され金網製で円筒型のフィルタ13が接続されている。このフィル タ13の上下部にはステンレス製の板15が嵌め込まれている。このフィルタ1 3の金網によって粗い塵が除去された水がタンク11内へ注入される。タンク1 1内の下部には、砂利を充填した砂利層16が形成され、砂利層16の上には、 繊維状ポリエステルろ過材1を充填したろ過材層14が形成されている。砂利層 16の中には、ろ過材層14のろ過材を逆洗する時に空気を供給するパイプ22 と接続され、左右に枝状管24を有する散気管26が埋設されている。枝状管2 4の下部には、長手方向に複数個の通風口が形成されている。なお、砂利層16 は、開口を有する多孔板28によって保持されている。タンク上部には逆洗水を 排出するためのパイプ30が、タンク下部には池に清澄水を再供給するための流 量調節弁を備えたパイプ32がそれぞれ接続されている。The filtration device 10 includes a cylindrical tank 11, and a pipe 12 for supplying water such as an artificial pond is connected to an upper peripheral wall of the tank 11. The discharge port of the pipe 12 is bent upward and is connected to a cylindrical filter 13 made of wire mesh. Plates 15 made of stainless steel are fitted in the upper and lower parts of the filter 13. Water from which coarse dust has been removed by the wire mesh of the filter 13 is injected into the tank 11. A gravel layer 16 filled with gravel is formed in the lower part of the tank 11, and a filter medium layer 14 filled with the fibrous polyester filter medium 1 is formed on the gravel layer 16. Inside the gravel layer 16 is embedded an air diffuser pipe 26 connected to a pipe 22 for supplying air when backwashing the filter medium of the filter medium layer 14 and having branch pipes 24 on the left and right. In the lower part of the branch pipe 24, a plurality of ventilation holes are formed in the longitudinal direction. The gravel layer 16 is held by a perforated plate 28 having an opening. A pipe 30 for discharging backwash water is connected to the upper part of the tank, and a pipe 32 equipped with a flow control valve for resupplying clear water to the pond is connected to the lower part of the tank.

【0017】 通常の池水等をろ過する時は、水は図3の実線で示す如く、パイプ12を通り 、金網製のフィルタ13よりタンク11内の上部へ散布されてろ過材層14の上 に滞留し、水頭差によって、ろ過材層14及び砂利層16中を通過する。この過 程において水中の浮遊固形物質がろ過される。ろ過された清澄水は多孔板28を 通り、タンク11の下部から、流量調節弁を備えたパイプ32によって再び池に 排出される。When filtering normal pond water or the like, the water passes through the pipe 12 as shown by the solid line in FIG. 3, and is sprayed from the wire mesh filter 13 to the upper part of the tank 11 and onto the filter material layer 14. It stays and passes through the filter medium layer 14 and the gravel layer 16 due to the head difference. During this process, suspended solids in water are filtered. The filtered clear water passes through the perforated plate 28, and is discharged from the lower part of the tank 11 to the pond again by a pipe 32 equipped with a flow rate control valve.

【0018】 また、ろ過材1を逆洗する時には、図3の点線で示す如く、コンプレッサーに より供給される空気がパイプ22を通って、散気管26の枝状管24の下部にあ る通風口から噴出される。空気の噴出と同時に、図2の点線で示す如く、ろ過装 置10のタンク11の下部に接続されたパイプ32によって池の水が下部から供 給され、水流と空気流によってろ過材層14及び砂利層16中の浮遊固形物質が ろ過材から遊離される。特にろ過材層14に用いられる繊維状ポリエステルろ過 材1は比重が軽いため、逆洗水中に容易に分散、攪拌され、浮遊固形物質を効率 よく遊離することができる。遊離された浮遊固形物質が分散された逆洗水は、ろ 過装置10の上部に接続された逆洗水排出パイプ30を通って排出される。Further, when the filter medium 1 is backwashed, as shown by the dotted line in FIG. 3, the air supplied from the compressor passes through the pipe 22 and the ventilation under the branch pipe 24 of the air diffusing pipe 26. Erupted from the mouth. Simultaneously with the jet of air, as shown by the dotted line in FIG. 2, the water in the pond is supplied from the lower part by a pipe 32 connected to the lower part of the tank 11 of the filter device 10, and the filter material layer 14 and the filter material layer 14 are supplied by the water flow and the air flow. Suspended solid material in the gravel layer 16 is released from the filter media. In particular, since the fibrous polyester filter medium 1 used for the filter medium layer 14 has a low specific gravity, it can be easily dispersed and agitated in the backwash water, and the suspended solid substance can be released efficiently. The backwash water in which the released floating solid substances are dispersed is discharged through the backwash water discharge pipe 30 connected to the upper part of the filtration device 10.

【0019】 ポリエステルろ過材1は軽量であるため、逆洗時に、逆洗水及び空気流の圧力 によって容易に逆洗水中に分散され、ろ過材1に付着した浮遊固形物質を、低い 空気圧と少ない逆洗水で効率よく洗浄、除去することができる。Since the polyester filter medium 1 is lightweight, it is easily dispersed in the backwash water by the pressure of the backwash water and the air flow at the time of backwashing, and the suspended solid substances attached to the filter medium 1 are low in air pressure and small in amount. It can be efficiently washed and removed with backwash water.

【0020】 前記の如くポリエステルろ過材1が軽量であるため、ろ過材層14上に、逆洗 時の空気流によって容易に持ち上がる程度の重さの蓋体、例えば、アクリル製の 多孔板等をのせると、ろ過時にろ過材の浮き上がりを防ぎ、逆洗した後のろ過材 の充填密度を上げるための重しともなるため、効率よくろ過を行うことができて 好ましい。例えば、ろ過材の素材繊維としてポリプロピレンの如き比重の軽いも のを用いる場合には、この蓋体を用いることが特に効果的である。As described above, since the polyester filter medium 1 is lightweight, a lid body having a weight enough to be easily lifted by the airflow during backwashing, for example, a perforated acrylic plate or the like is provided on the filter medium layer 14. When it is placed, it serves as a weight for preventing the filter material from floating during filtration and increasing the packing density of the filter material after backwashing, which is preferable because the filtration can be carried out efficiently. For example, when a material having a low specific gravity such as polypropylene is used as the material fiber of the filter material, it is particularly effective to use this lid.

【0021】 逆洗を行った後、分散されたろ過材1が沈降してから再び池水のろ過処理を行 うものである。この時、逆洗水がパイプ30を通って排出された後、一旦、タン ク内の水をろ過装置10の下部のパイプ32から排出すると、繊維状ポリエステ ルろ過材1が排水時の水圧によって密に充填されるため、ろ過効率が向上する。After backwashing, the dispersed filter medium 1 is allowed to settle, and then the pond water is filtered again. At this time, after the backwash water is discharged through the pipe 30, once the water in the tank is discharged through the pipe 32 at the lower part of the filtration device 10, the fibrous polyester filter medium 1 is discharged by the water pressure during drainage. The dense packing results in improved filtration efficiency.

【0022】 表2は、逆洗後、そのままろ過を行った場合と、一旦、下部のパイプ32から 逆洗水を排水した後ろ過を行った場合における浮遊固形物質の除去率を測定した 結果を示す。浮遊固形物質としては、前記表1におけるものと同様のものを用い た。透過流速は100m/hでろ過を行った。Table 2 shows the results of measuring the removal rate of suspended solids in the case where filtration was carried out as it is after backwashing and when the backwash water was once drained from the lower pipe 32 and then filtration was carried out. Show. As the suspended solid substance, the same substances as those shown in Table 1 were used. The filtration was performed at a permeation flow rate of 100 m / h.

【0023】[0023]

【表2】 [Table 2]

【0024】 表2に示す如く、浮遊固形物質の含有量に係わらず、排水後にろ過を行った場 合の除去率が高くなっている。このため、逆洗後は、一旦タンク内の水をろ過装 置10の下部のパイプ32から排出した後、ろ過処理を行うことが好ましい。As shown in Table 2, regardless of the content of suspended solids, the removal rate is high when filtration is performed after drainage. Therefore, after backwashing, it is preferable that the water in the tank is once discharged from the pipe 32 at the lower part of the filtration device 10 and then the filtration process is performed.

【0025】 高速ろ過に関しては、例えば、本実施例のろ過材層14を用いた場合の原水の ろ過材層透過速度と浮遊固形物質の除去率を測定した結果を図4に示すが、図4 のグラフから明らかなごとく、浮遊固形物質を5ppm含有する原水の浮遊固形 物質の除去率は、透過速度50m/hrにおいて75%程度であるのに対し、透 過速度100m/hrにおいては約85%、120m/hrにおいては約90% の高率を示し、透過速度が高い場合に特に有効であることが明らかであった。こ れは、透過速度が高いと水圧によってろ過材1が密に充填されるため、空隙が少 なくなり除去率があがり、透過速度が低いと水がろ過材1間の空隙を通って流れ 、ろ過材1内の微細繊維による浮遊固形物質のろ別が充分に行われないためと考 えられる。このため、本実施例のろ過装置においては、透過速度は100m/h r以上とすることが好ましい。なお、透過速度はろ過材層の上部へ供給される水 の量によって制御することができる。前記透過速度を実現するためには、1時間 当たりのタンク11への水の供給量は、例えば、タンク断面積を0.5m2 とし たとき、50m3 以上とすることが必要である。Regarding high-speed filtration, for example, FIG. 4 shows the results obtained by measuring the filter material layer permeation rate of raw water and the removal rate of suspended solids when the filter material layer 14 of this example is used. As is clear from the graph, the removal rate of suspended solids in raw water containing 5ppm of suspended solids is about 75% at a permeation speed of 50m / hr, while it is about 85% at a permeation speed of 100m / hr. , 120 m / hr, a high rate of about 90% was shown, and it was clear that it was particularly effective when the permeation rate was high. This is because when the permeation rate is high, the filter medium 1 is densely packed by the water pressure, so the number of voids is small and the removal rate is high. It is considered that the suspended solid matter is not sufficiently filtered by the fine fibers in the material 1. Therefore, in the filtration device of this example, the permeation speed is preferably 100 m / hr or more. The permeation rate can be controlled by the amount of water supplied to the upper part of the filter material layer. In order to realize the above-mentioned permeation rate, the amount of water supplied to the tank 11 per hour needs to be 50 m 3 or more when the tank cross-sectional area is 0.5 m 2 .

【0026】 以上の観点から、本考案のろ過材1は、ろ過材層14において、高い充填率で 充填されていることが好ましい。例えば、本実施例における繊維状ポリエステル ろ過材1においては、ろ過効率の観点から、未加圧の状態に対して体積比96% 以下となるような圧縮率で充填されていることが好ましく、95〜90%の圧縮 率で充填されていることがより好ましい。所望の圧縮率は、ろ過材層に充填する 場合に所定の圧力をかけて圧縮、充填して得ることもでき、蓋体の重量を調製す ることによって得ることもできる。さらに、充填時には圧縮率を調整することな く、ろ水の透過流速を、例えば、75m/hを超える程度に、増加させることに よって、好ましい圧縮率を得ることもできる。From the above viewpoint, the filter medium 1 of the present invention is preferably filled in the filter layer 14 at a high filling rate. For example, from the viewpoint of filtration efficiency, the fibrous polyester filter material 1 in the present embodiment is preferably filled at a compression rate such that the volume ratio is 96% or less with respect to the unpressurized state, and 95 It is more preferable that the filling rate be up to 90%. The desired compressibility can be obtained by compressing and filling a predetermined pressure when filling the filter material layer, or can be obtained by adjusting the weight of the lid. Furthermore, it is also possible to obtain a preferable compression rate by increasing the permeation flow rate of the filtered water to, for example, about 75 m / h without adjusting the compression rate during filling.

【0027】[0027]

【考案の効果】[Effect of device]

上記構成により水ろ過処理を行うことにより、ろ過装置を大型化する必要がな く、高速度で効率よく水をろ過することができ、さらに、逆洗時の処理を簡便か つ迅速に行いうる優れた効果を示す。 By performing the water filtration treatment with the above configuration, it is possible to efficiently filter water at a high speed without the need to upsize the filtration device, and further, the treatment at the time of backwashing can be performed simply and quickly. Shows excellent effect.

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

【図1】実施例1のろ過材1を示す斜視図である。FIG. 1 is a perspective view showing a filter medium 1 according to a first embodiment.

【図2】実施例2のろ過装置を示す斜視図である。FIG. 2 is a perspective view showing a filtration device according to a second embodiment.

【図3】実施例2のろ過装置を示す概略断面図である。FIG. 3 is a schematic cross-sectional view showing a filtration device of Example 2.

【図4】実施例2のろ過装置において、ろ水の透過速度
と、浮遊固形物質除去率の関係を表すグラフである。
FIG. 4 is a graph showing the relationship between the permeation rate of filtered water and the removal rate of suspended solids in the filtration device of Example 2.

【符号の説明】[Explanation of symbols]

10 ろ過装置 12 供給パイプ 14 ポリエステル製ろ過材1を充填したろ過材層 16 砂利層 22 空気供給パイプ 26 散気管 32 排出パイプ 10 Filtration Device 12 Supply Pipe 14 Filtration Material Layer Filled with Polyester Filtration Material 1 16 Gravel Layer 22 Air Supply Pipe 26 Diffuser Pipe 32 Discharge Pipe

Claims (2)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】 熱可塑性の短繊維を束状となし、該束表
面の繊維及び内部の繊維の一部を融着固定して紐状と
し、これを切断して短柱状に成形したことを特徴とする
ろ過材。
1. A method in which thermoplastic short fibers are formed into a bundle, fibers on the surface of the bundle and a part of the fibers inside are fused and fixed to form a string, which is cut into a short column shape. Characteristic filter material.
【請求項2】 柱状のタンクの上部へ未ろ水を供給する
パイプと、内部に水をろ過するためのろ過材と、下部か
らろ過された水を排出するための流量調節弁を備えたパ
イプと、を備えたろ過装置において、 前記ろ過材として、熱可塑性の短繊維をカードして束状
となし、該束表面の繊維及び内部の繊維の一部を加熱融
着して成形したろ過材を用い、このろ過材を密に充填し
た状態でろ過を行うことを特徴とするろ過装置。
2. A pipe equipped with a pipe for supplying unfiltered water to the upper part of a columnar tank, a filter material for filtering the water inside, and a flow control valve for discharging the water filtered from the lower part. In the filtering device, the filtering material is formed by carding thermoplastic short fibers into a bundle as the filtering material, and heating and fusing the fibers on the surface of the bundle and a part of the fibers inside. The filtration device is characterized by performing filtration in a state where the filter material is densely packed.
JP1993057242U 1993-10-22 1993-10-22 Filter media and filtration equipment Expired - Fee Related JP2587981Y2 (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
JP1993057242U JP2587981Y2 (en) 1993-10-22 1993-10-22 Filter media and filtration equipment

Publications (2)

Publication Number Publication Date
JPH0725914U true JPH0725914U (en) 1995-05-16
JP2587981Y2 JP2587981Y2 (en) 1998-12-24

Family

ID=13050071

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
JP (1) JP2587981Y2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09840A (en) * 1995-06-12 1997-01-07 Toyo Eng Corp Floating filter material and filter apparatus using the same
KR101458941B1 (en) * 2014-06-25 2014-11-07 김기철 Water filtering apparatus
WO2015115740A1 (en) * 2014-02-03 2015-08-06 주식회사 휴비스워터 Fibre-strand-bundle filter incorporating floats

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09840A (en) * 1995-06-12 1997-01-07 Toyo Eng Corp Floating filter material and filter apparatus using the same
WO2015115740A1 (en) * 2014-02-03 2015-08-06 주식회사 휴비스워터 Fibre-strand-bundle filter incorporating floats
KR101458941B1 (en) * 2014-06-25 2014-11-07 김기철 Water filtering apparatus

Also Published As

Publication number Publication date
JP2587981Y2 (en) 1998-12-24

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