JPH11114319A - Method of washing and regenerating filter medium bed - Google Patents
Method of washing and regenerating filter medium bedInfo
- Publication number
- JPH11114319A JPH11114319A JP9280967A JP28096797A JPH11114319A JP H11114319 A JPH11114319 A JP H11114319A JP 9280967 A JP9280967 A JP 9280967A JP 28096797 A JP28096797 A JP 28096797A JP H11114319 A JPH11114319 A JP H11114319A
- Authority
- JP
- Japan
- Prior art keywords
- filter medium
- washing
- medium layer
- water
- regenerating
- 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
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
- Biological Treatment Of Waste Water (AREA)
- Filtration Of Liquid (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、ろ材層の洗浄再
生方法の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a method for washing and regenerating a filter medium layer.
【０００２】[0002]
【従来の技術】従来、比重が１以下で１に近い浮上性ろ
材を用いたろ床の洗浄方法は、水と空気をろ床下部より
送入する方法が知られている。この方法では、水より軽
い浮上性ろ材が洗浄水の流速によって、ろ材流出防止材
に押し付けられ、流動攪拌ができないため十分な洗浄が
できない問題があった。また、洗浄後排水をろ過槽下部
から排出する時、剥離した余剰汚泥やＳＳが再びろ材に
補捉され、完全に排出ができない問題があった。2. Description of the Related Art Conventionally, as a method for cleaning a filter bed using a buoyant filter medium having a specific gravity of 1 or less and close to 1, a method of feeding water and air from a lower part of the filter bed is known. In this method, a buoyant filter medium lighter than water is pressed against the filter medium outflow preventing material by the flow rate of the washing water, and there is a problem that sufficient washing cannot be performed because flow stirring cannot be performed. Further, when draining the wastewater from the lower part of the filtration tank after washing, there is a problem that the excess sludge and SS that have been peeled off are trapped by the filter medium again and cannot be completely discharged.
【０００３】[0003]
【発明が解決しようとする課題】この発明は、上述のよ
うな問題を解決せんとするものであり、ろ材の攪拌流動
を容易にするとともに、攪拌して分離された固形物が再
びろ材に詰まることがないろ材の洗浄再生方法を提供せ
んとするものである。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and facilitates the stirring and flowing of the filter medium, and the solid matter separated by stirring is clogged in the filter medium again. It is an object of the present invention to provide a method for washing and regenerating a filter medium without any problem.
【０００４】[0004]
【課題を解決するための手段】上記のような課題を解決
するために、この発明では、目詰まりしたろ材（ろ材
層）を洗浄再生するに当たって、空気および洗浄水を用
いてろ材層を解きほぐすと同時にろ過槽内に上昇流を発
生させ、洗浄水をろ過槽の上部から抜き取り、ろ材層中
への逆流を防止したものである。また、ろ材としては、
合成樹脂製の細繊維片を加熱融着して、弾性を有して且
つ、強度を有するものを使用したものである。Means for Solving the Problems In order to solve the above-mentioned problems, according to the present invention, when a clogged filter medium (filter medium layer) is washed and regenerated, the filter medium layer is unraveled using air and washing water. At the same time, an ascending flow is generated in the filtration tank, and the washing water is drawn out from the upper part of the filtration tank to prevent backflow into the filter medium layer. Also, as filter media,
A synthetic resin fine fiber piece is heat-fused to use an elastic and strong material.
【０００５】すなわち、この発明の要旨とするところ
は、その下部に逆円錐状の沈殿部を形成した円筒状のろ
過槽に装填したろ材層を洗浄再生するに当たり、まず、
底部の沈殿部を排出したのち、ろ材層の下方から空気お
よび洗浄水を送ってろ材を攪拌しつつ、ろ材を洗浄し、
洗浄排水をろ過の上部から取り出すようにしたものであ
る。That is, the gist of the present invention is as follows. First, in washing and regenerating a filter medium layer loaded in a cylindrical filtration tank having an inverted conical settling portion formed at a lower portion thereof,
After discharging the sediment at the bottom, wash the filter medium while stirring the filter medium by sending air and washing water from below the filter medium layer,
The washing wastewater is taken out from the upper part of the filtration.
【０００６】そして、上記のように下方から空気および
洗浄水を送り、ろ過槽の上部から洗浄排水を取出すの
で、ろ過槽内には上向流が生ずるが、この上向流をろ材
の攪拌のために効率よく作用させるため、ろ過槽内で循
環するようにしている。その循環のための手段として
は、ろ過槽の中心部に同心状にドラフトチューブを立設
してもよく、また、攪拌用の空気ノズルをろ過槽の底部
に中心から偏位させて設けてもよい。[0006] Then, as described above, air and washing water are sent from below, and washing wastewater is taken out from the upper part of the filter tank, so that an upward flow is generated in the filter tank. In order to make it work efficiently, it is circulated in the filtration tank. As a means for the circulation, a draft tube may be provided concentrically at the center of the filtration tank, or an air nozzle for stirring may be provided at the bottom of the filtration tank offset from the center. Good.
【０００７】また、ろ過槽内に装入するろ材としては、
軽量で空隙が広く、耐圧、耐蝕性を有して強度を有する
ものが望ましく、これらの条件を満足するものとして、
次のような合成樹脂材よりなるろ材を用いている。すな
わち、素材が芯をポリプロピレン、鞘をポリエチレンと
した熱融着性複合繊維で繊度１８〜６５デニールである
第１フィラメントと、素材がポリプロピレン繊維で繊度
が３〜１０デニールである第２フィラメントと、素材が
芯をポリプロピレン、鞘をポリエチレンとした熱融着性
複合繊維で、繊度１．５〜６デニールである第３フィラ
メントを混綿したウェッブをニードルパンチング法によ
り布形化し、両面のウェッブ起毛状態を平滑化すること
なく加熱処理し、前記ウェッブの重量が２００〜８００
ｇ／平方メートル、厚みが２〜８ｍｍの有形化板状体を
３〜５ｍｍ角の小片に裁断したものである。[0007] As a filter medium to be charged into the filtration tank,
It is desirable to have a light weight, wide void, pressure resistance, corrosion resistance and strength, and as those satisfying these conditions,
A filter medium made of the following synthetic resin material is used. That is, a first filament having a fineness of 18 to 65 denier in a heat-fusible conjugate fiber having a core of polypropylene and a sheath of polyethylene, and a second filament having a raw material of polypropylene fiber and a fineness of 3 to 10 denier, The material is made of a heat-fusible conjugate fiber with polypropylene as the core and polyethylene as the sheath, and a web mixed with a third filament having a fineness of 1.5 to 6 denier is formed into a cloth by needle punching method. Heat treatment without smoothing, the weight of the web is 200-800
It is obtained by cutting a shaped plate-shaped body having a thickness of 2 to 8 mm into small pieces of 3 to 5 mm square.
【０００８】また、このように構成したろ材をろ過槽に
装入するにも、洗浄攪拌時の流動性を考慮すれば、処理
槽内におけるろ材層高と水層高とが６５：３５〜５０：
５０となるように装入量を調整すれば、効率よく洗浄再
生することが可能である。以下、図面に基づいてこの発
明を具体的に説明する。In addition, when the filter medium thus configured is charged into the filtration tank, the height of the filter medium layer and the height of the water layer in the processing tank are 65:35 to 50, considering the fluidity during washing and stirring. :
If the charging amount is adjusted to be 50, washing and regeneration can be performed efficiently. Hereinafter, the present invention will be specifically described with reference to the drawings.
【０００９】[0009]
【発明の実施の形態】図１はこの発明に係る処理装置の
縦断側面図であり、この図に従ってその操作を説明す
る。ろ材層１が夾雑物および有機物質の分解時に生じた
汚泥等で目詰りしたときは、原水の供給および処理水の
循環を停止して、処理水取り出し弁２を閉じ、処理槽３
の底部の沈殿物を引抜き管４から抜き取り、ついで、洗
浄用ブロワ５を作動させてエアノズル６から給気を行
い、ドラフトチューブ７を介してろ材を５〜１０分攪拌
する。その後、エアノズル６からの給気を続けながら、
洗浄水を洗浄水管８から循環ポンプ９を介して、原水供
給管１０から供給する。ろ材から剥離した夾雑物や余剰
汚泥を含む排水は、処理槽３の上部、越流トラフ１１に
出て処理水の取り出し管１２を経て排水管１３から槽外
へ排出される。上記の操作ののち洗浄用ブロワ５を停止
するとともに、循環弁１４を開、洗浄水弁１５を閉とし
て洗浄水の供給を停止し、約５分間循環のみを行う。そ
の後、原水の供給と曝気ブロワの運転を開始してろ過を
行い、１０〜２０分間処理水を排出し、その後、処理水
弁２を開とし、処理水の取り出し管１２を経て清澄水と
して取り出す。図２はドラフトチューブのない処理装置
であって、ろ材洗浄をろ材層１下方の一部に設置した攪
拌用エアノズル１６からの給気により、ろ材の攪拌を行
い槽内に上下の循環流Ｓを発生させるもので、その他は
図１の場合と同じである。FIG. 1 is a vertical sectional side view of a processing apparatus according to the present invention, and its operation will be described with reference to FIG. When the filter medium layer 1 is clogged with sludge generated during the decomposition of impurities and organic substances, the supply of raw water and the circulation of treated water are stopped, the treated water take-out valve 2 is closed, and the treated tank 3 is treated.
The sediment at the bottom is extracted from the extraction pipe 4, and then the cleaning blower 5 is operated to supply air from the air nozzle 6, and the filter medium is stirred via the draft tube 7 for 5 to 10 minutes. Then, while continuing to supply air from the air nozzle 6,
The cleaning water is supplied from a raw water supply pipe 10 through a cleaning water pipe 8 via a circulation pump 9. Drainage containing impurities and excess sludge separated from the filter medium exits to the overflow trough 11 at the upper part of the treatment tank 3 and is discharged from the drainage pipe 13 to the outside of the tank through the treated water take-out pipe 12. After the above operation, the cleaning blower 5 is stopped, the circulation valve 14 is opened, and the cleaning water valve 15 is closed to stop the supply of the cleaning water, and only the circulation is performed for about 5 minutes. Thereafter, the supply of raw water and the operation of the aeration blower are started to perform filtration, and the treated water is discharged for 10 to 20 minutes. Thereafter, the treated water valve 2 is opened, and the treated water is taken out as clear water through the take-out pipe 12. . FIG. 2 shows a processing apparatus without a draft tube. The filter medium is agitated by supplying air from a stirring air nozzle 16 installed in a part below the filter medium layer 1 to wash the filter medium, thereby forming a vertical circulating flow S in the tank. Others are the same as those in FIG.
【００１０】[0010]
【発明の効果】以上の説明で明らかなように、この発明
はろ材層を洗浄再生するに当たり、ろ過槽内に攪拌洗浄
流の上下循環流を発生させるのでろ材の流失がなく、ま
た、洗浄排水をろ過槽の上部からろ材層の上方より槽外
に取出すので、分離した夾雑物が逆流してろ材に付着す
ることがないものであり、従来のこの種ろ過装置のろ材
洗浄時の課題を解決したものである。As is apparent from the above description, in the present invention, when washing and regenerating the filter medium layer, a vertical circulating flow of the agitated washing flow is generated in the filtration tank, so that the filter medium is not lost, and the washing drainage is performed. Is removed from the upper part of the filter tank from above the filter medium layer to the outside of the tank, so that separated impurities do not flow back and adhere to the filter medium. It was done.
【図１】この発明に係る汚水の処理装置の縦断側面図で
ある。FIG. 1 is a vertical side view of a wastewater treatment apparatus according to the present invention.
【図２】同じく、他の実施例の縦断側面図である。FIG. 2 is a longitudinal sectional side view of another embodiment.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ Ｂ０１Ｄ 29/08 ５４０Ａ 29/38 ５８０Ｆ ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 6 Identification code FI B01D 29/08 540A 29/38 580F
Claims (5)
円筒状のろ過槽に装入したろ材層を洗浄再生するに当た
り、まず、底部の沈殿物を排出したのち、ろ材層の下方
から空気および洗浄水を送ってろ材を攪拌しつつろ材を
洗浄し、洗浄排水をろ過槽の上部から取出すことを特徴
とするろ材層の洗浄再生方法。When washing and regenerating a filter medium layer charged in a cylindrical filtration tank having an inverted conical sediment formed at a lower portion thereof, first, a sediment at a bottom is discharged, and then the filter medium layer is discharged from below the filter medium layer. A method for washing and regenerating a filter medium layer, comprising: washing the filter medium while sending air and washing water to stir the filter medium; and taking out washing wastewater from the upper part of the filtration tank.
をポリプロピレン、鞘をポリエチレンとした熱融着性複
合繊維で繊度が１８〜６５デニールである第１フィラメ
ントと、素材がポリプロピレン繊維で繊度が３〜１０デ
ニールである第２フィラメントと、素材が芯をポリプロ
ピレン、鞘をポリエチレンとした熱融着性複合繊維で繊
度が１．５〜６デニールである第３フィラメントを混綿
したウェッブをニードルパンチング法により布形化し、
両面のウェッブ起毛状態を平滑化することなく加熱処理
し、前記ウェッブの重量が２００〜８００ｇ／平方メー
トル、厚みが２〜８ｍｍの布形化板状体を製作し、この
布形化板状体を３〜５ｍｍ角に裁断したものである請求
項１記載のろ材層の洗浄再生方法。2. A filter material to be loaded into the filtration tank is a heat-fusible conjugate fiber having a core of polypropylene and a sheath of polyethylene, a first filament having a fineness of 18 to 65 denier, and a material of polypropylene fiber. Needle needles are used to mix a second filament with a fineness of 3 to 10 denier and a third filament of 1.5 to 6 denier with heat-fusible conjugate fiber made of polypropylene as the core and polyethylene as the sheath. Formed by punching method,
A heat treatment is performed without smoothing the raised state of the web on both sides to produce a cloth-shaped plate having a weight of 200 to 800 g / m 2 and a thickness of 2 to 8 mm. The method for cleaning and regenerating a filter medium layer according to claim 1, wherein the filter medium layer is cut into a 3 to 5 mm square.
ろ材層高と水層高との比率が６５：３５〜５０：５０と
して装填されているとともに、処理水の一部が原水中に
循環するようにしてあることを特徴とする請求項１およ
び請求項２記載のろ材層の洗浄再生方法。3. When the filter medium layer is loaded in a filtration tank,
The ratio between the height of the filter medium layer and the height of the water layer is 65:35 to 50:50, and a part of the treated water is circulated in the raw water. Item 3. The method for washing and regenerating a filter medium layer according to Item 2.
トチューブが設けられており、ろ材層の洗浄再生時に、
下部から送られる空気がドラフトチューブ内では上昇し
てろ材がドラフトチューブ内では上昇し、ドラフトチュ
ーブ外では下向し、攪拌したろ材を上下に循環させて洗
浄することを特徴とする請求項１記載のろ材層の洗浄再
生方法。4. A draft tube is provided concentrically at the center of the filtration tank, and when the filter medium layer is washed and regenerated,
The air sent from the lower part rises inside the draft tube, the filter medium rises inside the draft tube, and goes down outside the draft tube, and the stirred filter medium is circulated up and down for washing. Method for washing and regenerating the filter media layer.
散気装置の散気面積がろ過槽の断面積の１／４から１／
２にしてあり、ろ材を洗浄するに当たって、ろ過槽内の
一方側に上昇流が、他方側に下向流が生じさせるように
してある請求項１記載のろ材層の洗浄再生方法。5. The aeration area of the aeration device for stirring and washing provided below the filter medium layer is from 1/4 to 1/1 of the sectional area of the filtration tank.
2. The method for cleaning and regenerating a filter medium layer according to claim 1, wherein when the filter medium is washed, an upward flow is generated on one side and a downward flow is generated on the other side in the filtration tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9280967A JPH11114319A (en) | 1997-10-15 | 1997-10-15 | Method of washing and regenerating filter medium bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9280967A JPH11114319A (en) | 1997-10-15 | 1997-10-15 | Method of washing and regenerating filter medium bed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11114319A true JPH11114319A (en) | 1999-04-27 |
Family
ID=17632396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9280967A Pending JPH11114319A (en) | 1997-10-15 | 1997-10-15 | Method of washing and regenerating filter medium bed |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11114319A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011061632A3 (en) * | 2009-08-03 | 2011-10-13 | Samandar Milani | Grey water diversion system |
| CN104923147A (en) * | 2015-07-10 | 2015-09-23 | 盐城琛丹低碳技术研究院有限公司 | Multi-stage stirring reactor |
| CN107763707A (en) * | 2017-09-28 | 2018-03-06 | 天津富斯特压力容器有限公司 | A kind of decontamination type water collecting and diversifying device |
| CN113974184A (en) * | 2021-11-17 | 2022-01-28 | 成都新繁食品有限公司 | Automatic device for desalting and rough washing of pickled vegetables |
| KR20220033779A (en) * | 2020-09-10 | 2022-03-17 | 신춘관 | Small size filtering device of aero type of cycling up/down vertical flow with float filter material and system recycling the polluted float filter material thereof |
-
1997
- 1997-10-15 JP JP9280967A patent/JPH11114319A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011061632A3 (en) * | 2009-08-03 | 2011-10-13 | Samandar Milani | Grey water diversion system |
| US8308937B2 (en) | 2009-08-03 | 2012-11-13 | Advanced Waste Water Systems | Grey water diversion system |
| CN104923147A (en) * | 2015-07-10 | 2015-09-23 | 盐城琛丹低碳技术研究院有限公司 | Multi-stage stirring reactor |
| CN107763707A (en) * | 2017-09-28 | 2018-03-06 | 天津富斯特压力容器有限公司 | A kind of decontamination type water collecting and diversifying device |
| KR20220033779A (en) * | 2020-09-10 | 2022-03-17 | 신춘관 | Small size filtering device of aero type of cycling up/down vertical flow with float filter material and system recycling the polluted float filter material thereof |
| CN113974184A (en) * | 2021-11-17 | 2022-01-28 | 成都新繁食品有限公司 | Automatic device for desalting and rough washing of pickled vegetables |
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