JP3239987B2 - A filter medium for sewage treatment and a sewage treatment apparatus using the filter medium. - Google Patents
A filter medium for sewage treatment and a sewage treatment apparatus using the filter medium.Info
- Publication number
- JP3239987B2 JP3239987B2 JP16844296A JP16844296A JP3239987B2 JP 3239987 B2 JP3239987 B2 JP 3239987B2 JP 16844296 A JP16844296 A JP 16844296A JP 16844296 A JP16844296 A JP 16844296A JP 3239987 B2 JP3239987 B2 JP 3239987B2
- Authority
- JP
- Japan
- Prior art keywords
- filter medium
- sewage treatment
- porous body
- elastic porous
- mesh
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Immobilizing And Processing Of Enzymes And Microorganisms (AREA)
- Biological Treatment Of Waste Water (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【発明の属する技術分野】この発明は、下水等の有機性
汚水用のろ材並びにその処理装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter medium for organic sewage such as sewage and a treatment apparatus therefor.
【０００２】[0002]
【従来の技術】従来、有機性汚水の処理装置は公知であ
る。特開平５−１９２６９２号はその一例であり、この
処理装置では、その処理装置をろ材を充填した処理槽と
生物処理槽との二槽で構成している。図４に示すもので
もａ、ｂ二槽で構成している。2. Description of the Related Art Conventionally, apparatuses for treating organic wastewater are known. Japanese Patent Application Laid-Open No. 5-192692 is an example of such a processing apparatus, and the processing apparatus is composed of two tanks, a processing tank filled with a filter medium and a biological processing tank. The one shown in FIG. 4 also includes two tanks a and b.
【０００３】また、特公昭３５−５９４７号のような汚
水処理装置も公知であり、また、比重が１．０以上のア
ンスラサイト、粒状セラミック等の充填物を用いた処理
装置もよく知られている。Further, a sewage treatment apparatus such as Japanese Patent Publication No. 35-5947 is also known, and a treatment apparatus using a filler such as anthracite or granular ceramic having a specific gravity of 1.0 or more is also well known. I have.
【０００４】[0004]
【発明が解決しようとする課題】然しながら、特開平５
−１９２６９２号は、最初沈澱池や最終沈澱を設けるの
に比較すれば、設置面積を節約できるが、それでも二槽
式であるので広い設置面積が必要である。また、図４に
示すような従来装置では、下水の一時処理水のように高
濃度の原水の場合、ろ材の空隙率が低いこともあって、
ろ床の閉塞が頻繁に起り、ろ床の洗浄回数が多くなる難
点がある。然も、清澄な処理水を洗浄水として用いなけ
ればならない。SUMMARY OF THE INVENTION However, Japanese Patent Application Laid-Open
No. 192,692 saves installation space as compared to providing a first settling basin and a final settling, but it still requires a large installation area because it is a two-tank type. Further, in the conventional apparatus as shown in FIG. 4, in the case of raw water having a high concentration such as temporarily treated sewage water, the porosity of the filter medium may be low,
There is a drawback that the filter bed is frequently clogged and the number of times the filter bed is washed increases. Of course, clear treated water must be used as wash water.
【０００５】[0005]
【課題を解決するための手段】この発明は、ろ材に工夫
をすることによって、微細なＳＳまでも捕捉しながら目
詰りしにくく、且つ、逆洗が容易なろ材層を形成したも
のである。すなわち、ろ材としてスポンジ状の弾性多孔
体と合成樹脂製の網目状不織布を貼り合わせ、この貼合
体を細片に裁断してろ材としたものである。According to the present invention, a filter medium layer is formed by devising the filter medium so as to prevent clogging while capturing even fine SS and to facilitate backwashing. That is, a sponge-like elastic porous body and a mesh-like nonwoven fabric made of a synthetic resin are bonded as a filter medium, and the bonded body is cut into small pieces to form a filter medium.
【０００６】[0006]
【発明の実施の形態】このろ材を構成するスポンジ状の
弾性多孔体は、多孔質であるので汚水中の有機物を分解
する微生物の着床に好適であり、一方、網目状不織布
は、スポンジ状の弾性多孔体と同様にその空隙が微生物
の着床となるが、この網目状不織布の特質は、通水性を
有して前述の弾性多孔体よりも圧縮力に強く、ろ材層を
形成したときにろ過圧力により弾性多孔体が押しつぶさ
れるのを防止する点にある。このことは、ろ材層が目詰
りしたとき、逆洗再生が容易であることを意味する。BEST MODE FOR CARRYING OUT THE INVENTION The sponge-like elastic porous material constituting the filter medium is porous and thus is suitable for implantation of microorganisms that decompose organic substances in sewage. As in the case of the elastic porous body, the voids serve as a bed for microorganisms, but the characteristics of this mesh-shaped nonwoven fabric are that it has water permeability, is stronger in compressive force than the elastic porous body described above, and forms a filter medium layer. Another object is to prevent the elastic porous body from being crushed by the filtration pressure. This means that when the filter medium layer is clogged, backwashing and regeneration are easy.
【０００７】このように貼り合わされた弾性多孔体と網
目状不織布とは、ろ材層を形成したときにそのそれぞれ
の特性が生かされたろ過層を形成することができるもの
である。以下この発明に係るろ材を用いた汚水処理装置
を図面に基づいて説明する。[0007] The elastic porous body and the mesh-like nonwoven fabric thus bonded together can form a filtration layer that makes use of the characteristics of the respective layers when the filter medium layer is formed. Hereinafter, a sewage treatment apparatus using a filter medium according to the present invention will be described with reference to the drawings.
【０００８】[0008]
【実施例】図１および図２は、この発明に係るろ材の単
体を示し、図１に示すものは、スポンジ状の弾性多孔体
Ａと網目状不織布Ｂとを貼り合わせている。また、図２
に示すものは、弾性多孔体Ａの両面に網目状不織布Ｂを
貼って弾性多孔体Ａを挟んでいる。その大きさは、何れ
も一辺が２０ｍｍ〜４０ｍｍの直方体状であり、比重は
略１である。1 and 2 show a simple filter medium according to the present invention. In FIG. 1, a sponge-like elastic porous body A and a mesh-like non-woven fabric B are bonded together. FIG.
In (1), a mesh-like nonwoven fabric B is stuck on both sides of an elastic porous body A to sandwich the elastic porous body A. Each size is a rectangular parallelepiped shape with one side of 20 mm to 40 mm, and the specific gravity is approximately 1.
【０００９】次に、上述のようなろ材を用いた汚水の処
理装置について図３に随って説明する。図３において、
符号１は、その下部を逆円錐状に形成して沈澱部１ａを
設けた処理槽、２は、処理槽１に装入したろ材、３は、
ろ材層の下方に設けた曝気用のエアーノズル、４は、ろ
材撹拌用のエアーノズルである。Next, an apparatus for treating wastewater using the above-mentioned filter medium will be described with reference to FIG. In FIG.
Reference numeral 1 denotes a treatment tank having a lower portion formed in an inverted conical shape and provided with a settling portion 1a, 2 denotes a filter medium charged in the treatment tank 1, and 3 denotes a filter medium.
An air nozzle 4 for aeration provided below the filter medium layer is an air nozzle for stirring the filter medium.
【００１０】次に、矢示５は、原水の供給管であり、こ
の供給管５は、処理槽１に対してその接線方向に設けて
ある。また、符号６は、ろ液の溢流トラフ、７は処理水
の取出管、８は洗浄排水の排出管、９は沈澱物の引抜
管、１０は曝気用のブロワー、１１は撹拌用のブロワ
ー、１２はろ材の係止網である。Next, arrow 5 indicates a raw water supply pipe, and this supply pipe 5 is provided in a tangential direction to the treatment tank 1. Reference numeral 6 denotes an overflow trough for filtrate, reference numeral 7 denotes a pipe for taking out treated water, reference numeral 8 denotes a drain pipe for washing and drainage, reference numeral 9 denotes a pipe for extracting sediment, reference numeral 10 denotes a blower for aeration, and reference numeral 11 denotes a blower for stirring. , 12 are locking nets for the filter medium.
【００１１】この発明に係る装置は、上述のように構成
してあるので、処理槽１に供給される原水は、処理槽１
の内壁に沿って旋回し、サイクロン作用によって重い夾
雑物が分離されて槽底部に沈澱する。そして、重い夾雑
物が分離された原水は、ろ材層中を上昇して微細な夾雑
物が捕捉除去されるとともに、ろ材２の微生物に触れる
ことによって有機性汚濁物が分解され、処理槽１の上部
から清澄水として取出すことができる。Since the apparatus according to the present invention is configured as described above, the raw water supplied to the processing tank 1 is
Swirls along the inner wall of the vessel, and heavy contaminants are separated by cyclone action and settle at the bottom of the tank. The raw water from which the heavy contaminants are separated rises in the filter medium layer to capture and remove fine contaminants, and the organic contaminants are decomposed by contacting microorganisms in the filter medium 2, and it is take-out Succoth as the clear water from the top.
【００１２】一方、これと同時に、曝気ブロワー１０を
作動させてエアーノズル３から散気することで、ろ材２
の表面の微生物を活性化することができ、連続して供給
される原水中の有機物質を連続して分解処理することが
できる。On the other hand, at the same time, by operating the aeration blower 10 and diffusing air from the air nozzle 3,
Microorganisms of the surface of the can be activated, can it decomposed continuously organic substances in the raw water to be fed continuously.
【００１３】次に、このような運転をしてろ材層が、夾
雑物及び有機物質の分解時に生じた汚泥等で目詰りした
ときには、原水の供給を停止して処理槽１の底部の沈澱
物を引抜管９から抜き取るとともに、次いで、撹拌用の
ブロワー１１を作動させてエアーノズル４から給気撹拌
する。Next, when the filter medium layer is clogged with sludge or the like generated during the decomposition of impurities and organic substances by such an operation, the supply of raw water is stopped and the sediment at the bottom of the treatment tank 1 is stopped. Is withdrawn from the drawing tube 9, and then the stirring blower 11 is operated to supply and agitate the air from the air nozzle 4.
【００１４】この給気撹拌することによって、目詰りし
たろ材層が破砕され、目詰り物も破砕拡散する。このと
き、この発明に係る装置では、ろ材が弾性多孔体Ａと網
目状不織布とを貼り合わして構成してあるので、通水性
を有し、容易に破砕することができる。そして、ブロワ
ー１１を停止してろ材２が静止してろ材層を形成するの
を待って槽内の汚水を引抜管９から抜くことによって、
汚濁沈澱物のみを分離して取出すことができ、次いで、
引抜管９を閉止して原水を供給することによって運転を
再開することができる。By the supply and stirring, the clogged filter medium layer is crushed, and the clogged material is crushed and diffused. At this time, in the device according to the present invention, since the filter medium is configured by laminating the elastic porous body A and the mesh-like nonwoven fabric, it has water permeability and can be easily crushed. Then, by stopping the blower 11 and waiting for the filter medium 2 to stand still to form a filter medium layer, the wastewater in the tank is withdrawn from the drawing pipe 9.
Only the polluted sediment can be separated out and then
The operation can be restarted by closing the drawing pipe 9 and supplying raw water.
【００１５】上述のろ材の洗浄再生操作ではろ過運転を
停止したが、運転を停止することなくろ材を洗浄再生す
ることも可能である。すなわち、原液を供給しつつ前述
ブロワー１１を作動させてろ材を撹拌し、目詰り物が破
砕するとブロワー１１を停止する。In the above-described operation of washing and regenerating the filter medium, the filtration operation is stopped. However, it is also possible to wash and regenerate the filter medium without stopping the operation. That is, while supplying the undiluted solution, the blower 11 is operated to stir the filter medium, and when the clogged material is crushed, the blower 11 is stopped.
【００１６】すなわち、ブロワー１１を停止すること
で、ろ材２が供給管５からの原液ですすがれながら浮上
し、このとき、破砕された目詰物もろ材とともに浮上し
て係止網１２を通過して処理槽１から溢流し、槽外に取
出すことができる。このとき、取出管７は閉止し、排出
管８を用いるのは勿論である。排出管８からの汚水は原
水側へ返送し、再び、この処理装置を用い処理すること
ができる。そして、汚水の排出が終わると取出管７から
処理水を取出すものである。That is, when the blower 11 is stopped, the filter medium 2 floats while rinsing with the undiluted liquid from the supply pipe 5, and at this time, the crushed clogging also floats together with the filter medium and passes through the locking net 12. It can overflow from the processing tank 1 and be taken out of the tank. At this time, the discharge pipe 7 is closed, and the discharge pipe 8 is used. The sewage from the discharge pipe 8 is returned to the raw water side, and can be treated again using this treatment device. When the discharge of the sewage is completed, the treated water is taken out from the take-out pipe 7.
【００１７】また、上述のようにして汚水を処理するに
当たって、この発明に係るろ材は２は、微生物の着床す
るのに適合したスポンジ状の弾性多孔体Ａと通水性を有
して圧縮力に対して強度を有する網目状不織布Ｂとを貼
り合わせて構成してあるので、両者が生物処理とろ過と
に際して互いに難点を補完しながら作用するので、効率
の良い処理をすることができるものである。In the treatment of sewage as described above, the filter medium 2 according to the present invention is composed of a sponge-like elastic porous body A suitable for implantation of microorganisms and a water-permeable compressive force. And the mesh-like non-woven fabric B having a strength is bonded to each other, so that both act while complementing each other's difficulties in biological treatment and filtration, so that efficient treatment can be performed. is there.
【００１８】すなわち、スポンジ状の弾性多孔体Ａのみ
でのろ材２では、ろ材２自体に通水性がなく、ろ過圧に
よって圧縮されて短時間に目詰りし、また、網目状不織
布Ｂのみでは不織布のフィラメントが絡んで逆洗再生が
困難であるが、この発明に係るろ材２は、両者の難点を
解決したものである。That is, in the case of the filter medium 2 made of only the sponge-like elastic porous body A, the filter medium 2 itself has no water permeability, and is compressed by the filtration pressure to be clogged in a short time. However, the filter medium 2 according to the present invention solves both disadvantages.
【００１９】[0019]
【発明の効果】このように、この発明に係るろ材は、生
物処理とろ過との機能を兼ね備え、高効率で汚水を処理
することができるとともに、目詰りしたときに容易に再
生することができる。また、この発明に係るろ材を用い
た汚水の処理装置は、ろ過と生物処理が同時にできるの
で、一つの処理槽で足り、設置面積を占めず運転、メン
テナンス操作も簡単にできるものである。As described above, the filter medium according to the present invention has both functions of biological treatment and filtration, can treat wastewater with high efficiency, and can be easily regenerated when clogged. . Further, the wastewater treatment apparatus using the filter medium according to the present invention can perform filtration and biological treatment at the same time, so that one treatment tank is sufficient and the operation and maintenance operations can be easily performed without occupying an installation area.
【図１】 この発明に係るろ材単体の斜面図である。FIG. 1 is a perspective view of a filter medium alone according to the present invention.
【図２】 同じく、他の実施例の斜面図である。FIG. 2 is a perspective view of another embodiment.
【図３】 この発明に係るろ材を用いた汚水処理装置の
フローシート図である。FIG. 3 is a flow sheet diagram of a sewage treatment apparatus using a filter medium according to the present invention.
【図４】 従来の汚水処理装置のフローシート図であ
る。FIG. 4 is a flow sheet diagram of a conventional sewage treatment apparatus.
Ａ 弾性多孔体 Ｂ 網目状不織布 １ 処理槽 １ａ 沈澱部 ２ ろ材 ３ 曝気用エアーノズル ４ エアーノズル ５ 供給管 Reference Signs List A elastic porous body B mesh-like nonwoven fabric 1 treatment tank 1a sedimentation part 2 filter medium 3 air nozzle for aeration 4 air nozzle 5 supply pipe
Claims (3)
の網目状不織布Ｂとを貼り合わせ、この貼合体を細片に
裁断してなる汚水処理用のろ材。1. A filter medium for sewage treatment obtained by laminating a sponge-like elastic porous body A with a mesh-like nonwoven fabric B made of synthetic resin, and cutting the laminated body into small pieces.
多孔体Ａが挟まれている請求項１記載の汚水処理用のろ
材。2. The filter medium for sewage treatment according to claim 1, wherein the sponge-like elastic porous body A is sandwiched between the mesh-like nonwoven fabrics B.
円筒状の処理槽１に、スポンジ状の弾性多孔体Ａと合成
樹脂製の網目状不織布Ｂを貼り合わせて細片に裁断した
ろ材２を装入し、そのろ材層の下方に曝気用のエアーノ
ズル３およびろ材撹拌用のエアーノズル４を設けるとと
もに、処理槽１の側壁には、その接線方向に原水の供給
管５を設け、さらに、処理槽１の上部に処理水の流出部
を、処理槽１の下底部に沈澱物の取出口を設けてなる汚
水の処理装置。3. A sponge-like elastic porous body A and a synthetic resin mesh-like nonwoven fabric B are bonded to a cylindrical processing tank 1 having an inverted conical settling portion 1a formed at the bottom and cut into small pieces. The filter medium 2 is charged, and an air nozzle 3 for aeration and an air nozzle 4 for stirring the filter medium are provided below the filter medium layer, and a raw water supply pipe 5 is provided on the side wall of the processing tank 1 in a tangential direction thereof. Further, a sewage treatment apparatus in which an outflow portion of treated water is provided in an upper portion of the treatment tank 1 and an outlet for sediment is provided in a lower bottom portion of the treatment tank 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16844296A JP3239987B2 (en) | 1996-06-07 | 1996-06-07 | A filter medium for sewage treatment and a sewage treatment apparatus using the filter medium. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16844296A JP3239987B2 (en) | 1996-06-07 | 1996-06-07 | A filter medium for sewage treatment and a sewage treatment apparatus using the filter medium. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09327696A JPH09327696A (en) | 1997-12-22 |
| JP3239987B2 true JP3239987B2 (en) | 2001-12-17 |
Family
ID=15868199
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16844296A Expired - Fee Related JP3239987B2 (en) | 1996-06-07 | 1996-06-07 | A filter medium for sewage treatment and a sewage treatment apparatus using the filter medium. |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3239987B2 (en) |
-
1996
- 1996-06-07 JP JP16844296A patent/JP3239987B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09327696A (en) | 1997-12-22 |
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