JP2624505B2 - Steam-washing type valve-free filtration system - Google Patents
Steam-washing type valve-free filtration systemInfo
- Publication number
- JP2624505B2 JP2624505B2 JP9199788A JP9199788A JP2624505B2 JP 2624505 B2 JP2624505 B2 JP 2624505B2 JP 9199788 A JP9199788 A JP 9199788A JP 9199788 A JP9199788 A JP 9199788A JP 2624505 B2 JP2624505 B2 JP 2624505B2
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- JP
- Japan
- Prior art keywords
- water
- filtration
- washing
- air
- filter bed
- 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.)
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Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、上水道、工業用水道、産業排水処理、有機
廃水生物接触処理等の技術分野において使用される濾過
施設の改良に関する。The present invention relates to an improvement of a filtration facility used in technical fields such as waterworks, industrial waterworks, industrial wastewater treatment, and organic wastewater biological contact treatment.
（従来の技術） 上記の技術分野で使用される濾過装置としては、大量
の原水の正常濾過の継続により生ずる濾床の目づまりが
検出されれば自動的に貯留逆洗水により濾床を逆洗して
再生する無弁式自動濾過装置が多くの利点を有する点で
好んで使用される。(Prior art) As a filtration device used in the above technical field, if clogging of a filter bed caused by continuation of normal filtration of a large amount of raw water is detected, the filter bed is automatically backwashed with stored backwash water. A valveless automatic filtration device that regenerates and regenerates is preferably used because it has many advantages.
特公昭53−28656号の開放無弁式濾過装置は、これを
改良して濾過室を上面開放型として監視運転制御および
保守管理を有利に行い得るようにしたもので、洗浄用水
は濾過室より高位の貯槽に正常濾過作動中に汲み上げ等
により取入れて自己保有させるようになっている。濾床
の逆洗を貯槽保有洗浄水の水頭により行わせることがで
きるので、逆洗ポンプが不要である等の無弁式の多くの
利点を受継いでいる。しかしながら気水併用洗浄の機能
を有しない。The open-valve type filtration device disclosed in Japanese Patent Publication No. 53-28656 was improved to improve the monitoring chamber and control the operation and maintenance of the filtration chamber with the top open. It is designed to be taken into the high-order storage tank by pumping during normal filtration operation and to be self-owned. Since the backwashing of the filter bed can be performed by the head of the washing water held in the storage tank, many advantages of a valveless type such as a backwashing pump being unnecessary are inherited. However, it does not have the function of washing with air and water.
気水併用洗浄は、従来技術では、各個弁方式の一般型
濾過池によっており、気水洗浄時の小量水量と水洗浄時
の大量水量との切替えをはじめとするその経過制御運転
はそれぞれに対応させた各個制御弁の切替えにより行っ
ている。その結果、制御する弁の数や制御構成が複雑と
なり、所要動力を多く消費し、動力設備を含めて広いス
ペースを必要とする等の点で、経済性が劣る。In the conventional technology, the combined washing with air and water is performed by a general type filtration pond with individual valves, and its progress control operation including switching between a small amount of water during the washing with air and a large amount of water during the washing with water is individually performed. This is achieved by switching the corresponding individual control valves. As a result, the number of valves to be controlled and the control configuration become complicated, a large amount of required power is consumed, and a large space including power equipment is required.
（発明が解決しよととする問題点） 本発明は、従来技術の濾過装置の前記問題点に解決を
与える為、前出特公の洗浄水自己保有型開放自動濾過装
置をさらに発展させ、その利点を犠牲にすることなく受
継ぐとともに、満足な空気・水併用洗浄の機能を最も少
ない負担で付加させた濾過装置を提供することを目的と
する。(Problems to be Solved by the Invention) In order to solve the above-mentioned problems of the conventional filtration device, the present invention further develops a self-holding open automatic filtration device for washing water of the above-mentioned Tokugyo, It is an object of the present invention to provide a filtration device that inherits the advantages without sacrificing the advantages and adds a satisfactory function of washing with both air and water with the least burden.
本発明の多機能濾過装置によると、濾過技術そのもの
を一層広い適用範囲の分野に適応するようにすることが
できる。すなわち、従来の砂、アンスラサイト濾材を主
体にした表層濾過への空気・水洗浄の併用をはじめ、複
層濾過や上向流濾過、さらには粗粒充填材を利用した生
物接触濾過など、水中懸濁物の捕捉を濾層の全域で行わ
せる内部濾過方式において、空気・水併用洗浄、特に気
水行程による中、下層域の濾材洗浄を効果的に行わせる
ことを可能とする濾過装置が実現される。According to the multifunctional filtration device of the present invention, the filtration technology itself can be adapted to a wider field of application. In other words, in addition to conventional air and water washing for surface filtration mainly using sand and anthracite filter media, multi-layer filtration, upflow filtration, and biological contact filtration using coarse-particle filler In an internal filtration system that captures suspended matter over the entire area of the filter layer, a filtration device that enables effective cleaning of the filter medium in the lower layer area during the combined use of air and water, particularly during the air-water process. Is achieved.
（問題点を解決するための手段） 前記諸目的を達成するために、本発明の気水洗浄型開
放無弁式濾過装置は、構成としては、濾過室より高位の
貯槽に洗浄用水を正常濾過作動中に自己保有させるよう
にした開放型無弁式の自動濾過装置において、濾過室内
の濾床の下部内に空気分散管を配設し、洗浄用水を貯槽
より濾床の下方の集水機構に供給するサイフオン管を屈
曲上端位置の大径管部とその下部位置に分岐接続した小
径管部とよりなるものとして小径管部経由の小流量と両
管部経由の大流量とに洗浄用水の切換供給を可能とし、
さらに濾床上位に開口する気水洗浄開始用の水抜手段を
設けたことを特徴とする。(Means for Solving the Problems) In order to achieve the above-mentioned objects, the air-water washing type open valveless filtration device of the present invention has a structure in which washing water is normally filtered to a storage tank higher than the filtration chamber. In an open-type valveless automatic filtration device that is self-contained during operation, an air dispersion pipe is arranged in the lower part of the filter bed in the filtration chamber, and a water collecting mechanism below the filter bed from the storage tank for washing water. The siphon pipe to be supplied to the pipe consists of a large-diameter pipe section at the bent upper end position and a small-diameter pipe section branched and connected to the lower part of the pipe. Enables switching supply,
Further, a drainage means for starting steam-water washing which is opened above the filter bed is provided.
（作 用） 本発明装置によれば、濾床内部での目詰まり進行によ
り濾過抵抗が増加して一定値に達したときに、それを水
位上昇等により検知して気水洗浄から本洗浄にわたる濾
床洗浄を一定のシーケンスで秩序正しく行わせることが
できる。(Operation) According to the device of the present invention, when the filtration resistance increases due to the progress of clogging inside the filter bed and reaches a certain value, it is detected by a rise in the water level and the like, and from the air-water washing to the main washing. Filter bed washing can be performed in a regular sequence in an orderly manner.
すなわち、先ず正常濾過を停止し濾床上の水抜を行っ
てその水位を濾床上10cm程度にまで低下させる。次に空
気分散管から空気を供給し濾床の空気洗浄を２〜３分程
度行う。引続き洗浄水供給用サイフオン管の小径管部よ
り上位に真空吸引により管内水位を維持し小径管部経由
のサイフオン作用を発起して洗浄水を小水量で濾床下に
供給して気水の適正流量のもとに気水洗浄を２〜３分程
度行う。この際に膨脹する濾床が上位の排水トラフを越
すことがないようにする。のち気水供給を停止し0.5〜
１分程度で濾床を沈静させる。今度は洗浄水供給用サイ
フオン管の大径管部を含めてサイフオン作用を発起させ
洗浄水のみを大水量で濾床下に供給し本逆洗を３〜５分
程度行う。この際、洗浄排水はトラフを経由して外部に
排出する。こうして濾床洗浄を所定シーケンスで効果的
に実施したのち正常濾過に復帰する。That is, first, normal filtration is stopped, and water is drained from the filter bed to lower the water level to about 10 cm above the filter bed. Next, air is supplied from an air dispersion tube, and the filter bed is washed with air for about 2 to 3 minutes. Continuously maintain the water level in the pipe by vacuum suction above the small-diameter pipe section of the washing water supply siphon pipe, generate the siphon action via the small-diameter pipe section, and supply the washing water with a small amount of water to the bottom of the filter bed and the appropriate flow rate of air water And air-water washing for about 2 to 3 minutes. At this time, the expanding filter bed should not exceed the upper drainage trough. After that, stop supplying air and water 0.5 ~
Let the filter bed settle in about one minute. This time, a siphon effect is generated including the large-diameter pipe portion of the siphon tube for supplying the washing water, and only the washing water is supplied under a large amount of water under the filter bed, and the main backwash is performed for about 3 to 5 minutes. At this time, the washing wastewater is discharged to the outside via the trough. In this way, the filter bed washing is effectively performed in a predetermined sequence, and thereafter, returns to normal filtration.
濾過作動中も空気分散管を経由して空気を供給する等
して生物接触濾過を行う等、気水供給の同時あるいは序
列併用して各種の形態の濾過を実施することができる。During the filtration operation, various forms of filtration can be performed simultaneously or in combination with the supply of air and water, such as by performing biological contact filtration by supplying air via an air dispersion pipe.
（実施例） 以下、本発明を添付図を参照し、実施例に即して具体
的に説明しその特質を明らかにする。(Examples) Hereinafter, the present invention will be specifically described with reference to the accompanying drawings according to examples, and the characteristics thereof will be clarified.
第１図は本発明の１実施例の濾過装置の全体的構成を
示す縦断側面図である。単位の濾過装置が連接されてい
る場合にはその１単位を示し、その一部の水室、水路は
連通する構成としてよい。FIG. 1 is a vertical sectional side view showing an overall configuration of a filtration device according to one embodiment of the present invention. When a unit of filtering device is connected, one unit is shown, and a part of the water chamber and the water channel may be connected.
濾過室（１）は上方に向かって開放されており、その
濾床（２）はこの例では下部の集水機構（３）上に砂利
等の支持層（４）を介して支持した砂、アンスラサイト
等の濾材層（５）からなる。The filtration chamber (1) is open upward, and the filter bed (2) in this example has sand supported on a lower water collecting mechanism (3) via a support layer (4) such as gravel. It consists of a filter medium layer (5) such as anthracite.
正常濾過においては、原水は濾過室の１次側の原水流
入管（６）から流入して濾床（２）上の水位（ａ）の高
さに維持され、その水頭により濾床（２）を下向きに通
過して懸濁異物が主として濾材層（５）表面に捕捉され
て濾過除去され、濾過水となって下部集水機構（３）に
流入する。In normal filtration, the raw water flows in from the raw water inlet pipe (6) on the primary side of the filtration chamber and is maintained at the level of the water level (a) above the filter bed (2), and the head of the raw water causes the filter bed (2). , The suspended foreign matter is mainly captured on the surface of the filter medium layer (5), filtered and removed, and flows into the lower water collecting mechanism (3) as filtered water.
濾過水はそこから反対側の集水室（７）に流入し濾過
水サイフオン管（８）により流出渠（９）に移り、処理
水路（10）から送出される。流出渠（９）は列設単位濾
過装置に共通で、堰によって水位（ｂ）に維持される。From there, the filtered water flows into the opposite water collecting chamber (7), moves to the outflow culvert (9) by the filtered water siphon pipe (8), and is discharged from the treated water channel (10). The culvert (9) is common to the in-line unit filtration devices and is maintained at the water level (b) by weirs.
正常濾過の継続により濾材層（５）の目づまりが進行
すると、それに伴い濾過抵抗が増加し水位（ａ）が上昇
するので、それを検知する等して正常濾過を中心し濾材
層（５）の洗浄再生を自動的に開始する。そのための洗
浄水は濾過室（１）より高位の貯槽（11）中に正常濾過
作動中に濾過水の揚水あるいは原水の取入れ等により水
位（ｃ）まで貯留し、洗浄用水として前以て自己保有さ
れる。洗浄水貯槽（11）を密閉可能として濾過水の真空
吸引により揚水する場合、所定水位まで貯留されれば大
気開放とする。貯槽（11）はを単位濾過装置に連通する
ものとして洗浄水の共用を可能とし一時に利用できる洗
浄水量を多くするのが得策である。As the clogging of the filter medium layer (5) progresses due to the continuation of normal filtration, the filtration resistance increases and the water level (a) rises accordingly. Automatically start cleaning regeneration. The washing water for this purpose is stored in the storage tank (11) higher than the filtration chamber (1) up to the water level (c) by pumping the filtered water or taking in the raw water during normal filtration operation, and owns the washing water in advance. Is done. When the washing water storage tank (11) is made sealable and pumped up by vacuum suction of filtered water, if the water is stored to a predetermined water level, it is opened to the atmosphere. It is advisable that the storage tank (11) communicates with the unit filtration device so that the washing water can be shared and the amount of washing water that can be used at one time is increased.
洗浄を行うには洗浄水を貯槽（11）から集水機構
（３）に供給するが、そのための洗浄水供給サイフオン
管（12）を貯槽（11）から集水機構（３）に通ずる集水
室（７）にわたって配設する。In order to perform washing, the washing water is supplied from the storage tank (11) to the water collecting mechanism (3), and the washing water supply siphon tube (12) for this purpose is collected from the storage tank (11) to the water collecting mechanism (3). It is arranged over the room (7).
洗浄水供給サイフオン管（12）は、第２図に詳細に示
すように、その屈曲上端位置の大径管部（13）とその下
部位置に立上がり、立下がり管部間に分岐接続した小径
管部（14）とからなり、その上端部位置から真空ポンプ
系（15）および開放弁（16）が接続され、また立上がり
管内水位を検出指示する水位計（17）が付設されてい
る。その水位を小径管部（14）越えの低水位（l1）に維
持すればサイフオン作用により小径管部（14）を経由し
て小流量で洗浄水が供給され、大径管部（13）越えの高
水位（l2）に維持すれば両管部（13）（14）を経由して
大水量で供給されるごとく切替えられる。As shown in detail in FIG. 2, the washing water supply siphon tube (12) has a large-diameter pipe portion (13) at its bent upper end position and a small-diameter pipe rising and rising at its lower position and branched and connected between the falling pipe portions. A vacuum pump system (15) and an opening valve (16) are connected from the upper end of the section (14), and a water level gauge (17) for detecting and instructing the rising pipe water level is provided. If the water level is maintained at a low water level (l 1 ) over the small diameter pipe section (14), washing water is supplied at a small flow rate through the small diameter pipe section (14) by the siphon effect, and the large diameter pipe section (13) If the water level is maintained at a high water level (l 2 ), it is switched as if a large amount of water was supplied via both pipes (13) and (14).
濾材層（５）の空気洗浄のための空気を供給する空気
分散管（18）を濾床の下部内に設け、これに洗浄空気管
（19）を接続する。空気分散管（18）は濾床断面に拡が
るようにして、なるべく支持層（４）中に埋設する。An air distribution pipe (18) for supplying air for air cleaning of the filter medium layer (5) is provided in the lower part of the filter bed, and a cleaning air pipe (19) is connected to this. The air dispersion pipe (18) is buried in the support layer (4) as much as possible so as to extend to the cross section of the filter bed.
濾床上部からの洗浄排水の排出等を行わせるため、濾
床に隣る１側に低い支切壁を隔て排水ピット（20）を濾
過室（１）内に区画する。こうして濾過室（１）の上部
に設けた排水トラフ（21）に流入した排水が仕切壁を越
えて排水ピット（20）に流入するようにする。排水ピッ
ト（20）の下部には排水系（22）に連なるゲート（23）
を設ける。A drain pit (20) is defined in the filtration chamber (1) with a low partition wall on one side adjacent to the filter bed in order to discharge washing wastewater from the upper part of the filter bed. In this way, the drainage flowing into the drainage trough (21) provided at the upper part of the filtration chamber (1) passes through the partition wall and flows into the drainage pit (20). A gate (23) connected to the drainage system (22) is located below the drainage pit (20).
Is provided.
洗浄開始に先立つ水抜手段として、濾床上面より約10
cm上位と排水ピット底部とにわたる水抜用サイフオン管
（24）を配設し、水位（ａ）下にあるその屈曲上端に開
閉排気弁（25）を接続する。Approximately 10 minutes from the top of the filter
A drainage siphon tube (24) extending from the top of the cm to the bottom of the drainage pit is provided, and an open / close exhaust valve (25) is connected to the bent upper end below the water level (a).
上記構成を有する本発明実施例の濾過装置は前記作用
の記載に準じて濾材洗浄されるがその具体的詳細は次の
通りである。The filter device of the embodiment of the present invention having the above-described configuration is subjected to filter medium washing in accordance with the description of the operation, and specific details thereof are as follows.
洗浄を開始するには、先ず原水供給を停止しゲート
（23）を開き、さらに、排気弁（25）を閉じて水抜用サ
イフオン管（24）を発起させて濾床上面より約10cm上の
下位水位（a1）まで濾床上原水を水抜きする。To start washing, first stop the supply of raw water, open the gate (23), close the exhaust valve (25), raise the drainage siphon tube (24), and lower the lower part about 10 cm above the upper surface of the filter bed. Drain the raw water from the filter bed to the water level (a 1 ).
こうして空気分散管（18）から空気を吹出して下位水
位下の濾材層（５）を空気撹拌し濾材から付着異物を剥
離させる。In this manner, air is blown out from the air dispersion pipe (18) to agitate the filter medium layer (5) below the lower water level with air to separate adhering foreign matter from the filter medium.
次に空気流速1m/分に対し洗浄水を水流速0.2m/分の小
流量で供給する。これは逆洗サイフオン管（12）の立上
がり管内水位を（l1）に上昇させてサイフオン作用を発
起させることによりなされる。この気水洗浄により濾材
層（５）は膨脹し剥離異物はその上層に集められながら
濾床上水位が上昇し、この水位が排水トラフの越流端近
傍まで到達すると、濾材がトラフに流出して失われない
ようにこの中位水位（a2）で空気、水の供給を停止す
る。このようにこの気水洗浄行程には制限があることか
ら、この行程を最大限に効率化させるために水流量を小
さく絞り気水洗浄行程時間の延長を図る。Next, the washing water is supplied at a small flow rate of 0.2 m / min with respect to the air flow rate of 1 m / min. This is achieved by raising the water level in the rising pipe of the backwashing siphon tube (12) to (l 1 ) to cause a siphon effect. Due to this air-water washing, the filter medium layer (5) expands and the exfoliated foreign matters are collected in the upper layer, and the water level on the filter bed rises. When this water level reaches near the overflow end of the drainage trough, the filter medium flows out into the trough. At this medium water level (a 2 ), the supply of air and water is stopped so as not to be lost. Since the steam-washing process is limited as described above, the water flow rate is reduced to extend the steam-washing process time in order to maximize the efficiency of the steam-washing process.
気水の供給停止により沈静に入り、剥離異物を含む排
水を上層に残して濾材は分級されながら沈降する。When the supply of steam and water is stopped, the filter medium enters a calm state, and the filter medium is settled down while being classified, leaving drainage containing exfoliated foreign matters in the upper layer.
次には、逆洗サイフオン管（12）内の立上がり管内水
位を（l2）に上昇させて洗浄水を大流量で供給し、本逆
洗を行う。上層に残る排水をはじめ本逆洗により濾材か
らさらに剥離した懸濁異物を含む排水は排水トラフ（2
1）を越え排水ピット（20）に入りゲート（23）から排
出される。Next, the water level in the rising pipe in the backwash siphon tube (12) is raised to (l 2 ) to supply the wash water at a large flow rate, and the main backwash is performed. The wastewater that remains in the upper layer and the wastewater that contains suspended foreign matter that has been further separated from the filter medium by this backwashing is drained trough (2
After 1), it enters the drainage pit (20) and is discharged from the gate (23).
以上の行程を経て洗浄が完了すると再び原水流入管
（６）より原水を濾過室（１）に流入させ正常濾過を再
開する。このときゲート（23）を閉じ、排気弁（25）を
開いて水抜用サイフオン管（24）から空気を抜いて閉じ
次回のサイフオン化に備える。必要ならば小時間の捨水
ののち正常濾過に入るようにして濾過再開直後の濾過水
質の悪化を避けることができる。When the washing is completed through the above steps, the raw water flows into the filtration chamber (1) again through the raw water inflow pipe (6), and normal filtration is restarted. At this time, the gate (23) is closed, the exhaust valve (25) is opened, and air is evacuated from the drainage siphon tube (24) to close it for the next siphon operation. If necessary, it is possible to avoid the deterioration of the filtered water quality immediately after resuming the filtration by starting the normal filtration after draining the water for a short time.
以上の洗浄行程の条件の１例をとりまとめて次表に示
す。The following table summarizes one example of the conditions of the above-described cleaning process.
（発明の効果） 本発明によると、前記のように気水洗浄の効果的併用
により濾床洗浄が最も徹底して効率的に遂行することが
でき、しかも洗浄水保有型開放無弁濾過装置としての諸
利点は阻害、制約を受けることなく受継がれ、また気水
洗浄のために付加を必要とされる負担は僅少で済む。 (Effect of the Invention) According to the present invention, filter bed cleaning can be performed most thoroughly and efficiently by the effective use of air-water cleaning as described above, and as an open valveless filtration device having cleaning water. The advantages of the present invention can be inherited without any hindrance or restriction, and the burden required for adding air and water for washing is small.
さらに濾過技術の発展的向上を次のように実現でき
る。Furthermore, the development of filtration technology can be improved as follows.
（Ｉ）上水道濾過装置分野 現在、厚生省で新に作成される水道施設設計指針には
空気洗浄方法の採用が決定しているが、これに適合す
る。(I) Water Supply Filtration Equipment Field At present, the adoption of the air cleaning method has been decided in the water supply facility design guideline newly created by the Ministry of Health and Welfare, but it conforms to this.
（II）産業廃水濾過分野 高濁水の濾過には濾材層内部濾過や上向流濾過により
高負荷の除去を行うが、本発明の気水併用洗浄はこの場
合に極めて有効である。(II) Field of Industrial Wastewater Filtration The filtration of highly turbid water removes a high load by filtration inside the filter medium layer or upflow filtration, and the combined use of air and water of the present invention is extremely effective in this case.
（III）生物接触濾過分野 上水道の高度処理の一つとして生物接触濾過方法が中
央調査機関でも採用されつつあり、この場合の気水併用
洗浄、さらにはA/W式レオポルドブロック型集水機構
（特公昭60−13724）の採用により通水時の空気曝気を
有効に行わせることができる。(III) Biological contact filtration field As one of the advanced treatment of waterworks, the biological contact filtration method is being adopted by the central research institute. In this case, washing with air and water, and furthermore, A / W type Leopold block type water collecting mechanism ( By adopting Japanese Patent Publication No. 60-13724, air aeration can be performed effectively when water is passed.
第１図は本発明の１実施例の気水洗浄型開放無弁式濾過
装置の全体的構成を示す縦断側面図、第２図はその逆洗
サイフオン管の部分の拡大縦断側面図である。 （１）……濾過室、（２）……濾床、（３）……集水機
構、（４）……支持層、（５）……濾材層、（６）……
原水流入管、（７）……集水室、（８）……濾過水サイ
フオン管、（９）……流出渠、（10）……処理水路、
（11）……洗浄水貯槽、（12）……洗浄水供給サイフオ
ン管、（13）……大径管部、（14）……小径管部、（1
5）……真空ポンプ系、（16）……開放弁、（17）……
水位計、（18）……空気分散管、（19）……洗浄空気
管、（20）……排水ピット、（21）……排水トラフ、
（22）……排水系、（23）……ゲート、（24）……水抜
用サイフオン管、（25）……開閉排気弁、（ａ）……水
位、（a1）……下位水位、（a2）……中位水位、（ｂ）
（ｃ）（l1）（l2）……水位。FIG. 1 is a vertical sectional side view showing the overall structure of an air-water washing type open-valve type filtration device according to one embodiment of the present invention, and FIG. 2 is an enlarged vertical sectional side view of a portion of the backwash siphon tube. (1) Filtration chamber, (2) Filter bed, (3) Water collecting mechanism, (4) Support layer, (5) Filter medium layer, (6)
Raw water inflow pipe, (7) ... water collecting chamber, (8) ... filtered water siphon pipe, (9) ... outflow culvert, (10) ... treated waterway,
(11)… Wash water storage tank, (12)… Wash water supply siphon tube, (13)… Large diameter pipe, (14)… Small diameter pipe, (1
5) Vacuum pump system, (16) Opening valve, (17)
Water level gauge, (18) Air dispersion pipe, (19) Cleaning air pipe, (20) Drain pit, (21) Drain trough,
(22) ... drainage system, (23) .... gates, (24) .... Saifuon pipe drainage, (25) .... off exhaust valve, (a) ... water level, (a 1) ... lower level, (A 2 ): Medium water level, (b)
(C) (l 1 ) (l 2 ) ... water level.
Claims (2)
過作動中、自己保有させるようにした開放型無弁式の自
動濾過装置において、濾過室内の濾床の下部内に空気分
散管を配設し、洗浄用水を貯槽より濾床の下方の集水機
構に供給するサイフオン管を屈曲上端位置の大径管部と
その下部位置に分岐接続した小径管部とよりなるものと
して小径管部経由の小流量と両管部経由の大流量とに洗
浄用水の切換供給を可能とし、さらに濾床上位に開口す
る気水洗浄開始用の水抜手段を設けたことを特徴とする
気水洗浄型開放無弁式濾過装置。An open-type valveless automatic filtration device in which washing water is retained in a storage tank higher than a filtration chamber during normal filtration operation, an air dispersion pipe is provided in a lower portion of a filter bed in the filtration chamber. A small diameter pipe section is provided, in which a siphon pipe for supplying washing water from a storage tank to a water collecting mechanism below a filter bed is composed of a large diameter pipe section at a bent upper end position and a small diameter pipe section branched and connected to a lower position thereof. Water-washing type, characterized in that the washing water can be switched and supplied between a small flow rate via the pipe and a large flow rate via both pipe sections, and a drainage means for starting the steam-water cleaning that opens above the filter bed is provided. Open valveless filtration device.
開始時のみ閉とする排気弁を付設した特許請求の範囲第
１項記載の気水洗浄型開放無弁式濾過装置。2. The air-water-cleaning type open-valve-type filter device according to claim 1, wherein said water-draining means is a siphon tube and is provided with an exhaust valve which is closed only at the start of air-water cleaning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9199788A JP2624505B2 (en) | 1988-04-13 | 1988-04-13 | Steam-washing type valve-free filtration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9199788A JP2624505B2 (en) | 1988-04-13 | 1988-04-13 | Steam-washing type valve-free filtration system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01262907A JPH01262907A (en) | 1989-10-19 |
| JP2624505B2 true JP2624505B2 (en) | 1997-06-25 |
Family
ID=14042068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9199788A Expired - Fee Related JP2624505B2 (en) | 1988-04-13 | 1988-04-13 | Steam-washing type valve-free filtration system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2624505B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102407036A (en) * | 2011-11-02 | 2012-04-11 | 北京万邦达环保技术股份有限公司 | Gravity valveless filter |
| JP6185382B2 (en) * | 2013-12-18 | 2017-08-23 | 水ｉｎｇ株式会社 | Slow-down washing filtration device and filtration method thereof |
| JP6599096B2 (en) * | 2014-11-25 | 2019-10-30 | 水ｉｎｇ株式会社 | Filtration basin cleaning method and water treatment apparatus |
| JP6244444B1 (en) * | 2016-12-20 | 2017-12-06 | 株式会社神鋼環境ソリューション | Water treatment equipment |
-
1988
- 1988-04-13 JP JP9199788A patent/JP2624505B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01262907A (en) | 1989-10-19 |
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