JPH0228369B2 - - Google Patents
Info
- Publication number
- JPH0228369B2 JPH0228369B2 JP60146751A JP14675185A JPH0228369B2 JP H0228369 B2 JPH0228369 B2 JP H0228369B2 JP 60146751 A JP60146751 A JP 60146751A JP 14675185 A JP14675185 A JP 14675185A JP H0228369 B2 JPH0228369 B2 JP H0228369B2
- Authority
- JP
- Japan
- Prior art keywords
- main
- filter
- chamber
- sub
- stock solution
- 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 - Lifetime
Links
- 239000007788 liquid Substances 0.000 claims description 64
- 239000011550 stock solution Substances 0.000 claims description 63
- 238000001914 filtration Methods 0.000 claims description 54
- 239000000706 filtrate Substances 0.000 claims description 50
- 238000004140 cleaning Methods 0.000 claims description 22
- 239000002699 waste material Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 11
- 238000011001 backwashing Methods 0.000 claims description 7
- 239000002893 slag Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000011084 recovery Methods 0.000 claims description 5
- 239000000243 solution Substances 0.000 claims description 5
- 238000011049 filling Methods 0.000 claims description 3
- 238000005429 filling process Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 238000011109 contamination Methods 0.000 description 6
- 238000002156 mixing Methods 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 238000007747 plating Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
Landscapes
- Filtration Of Liquid (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、懸濁液を濾過するための装置に関
し、特に複数種類の原液を切換えて濾過処理する
に当つて濾液相互の混合や汚染を引き起さないよ
うな濾過装置ならびにその自動運転方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a device for filtering a suspension, and in particular, to a device for filtering a suspension, and in particular, to avoid mixing and contamination of the filtrates when switching between multiple types of stock solutions for filtration. The present invention relates to a filtration device and an automatic operation method thereof.
従来の技術
懸濁液を濾過して精製された濾液を得るに当
り、濾材に濾滓が蓄積して濾過速度が低下したり
濾過圧力の上昇によつて濾過効率が悪化したとき
に濾過運転を停止して濾材の洗浄や交換を行い、
濾材の再生後に再び濾過運転を行なうことは公知
であり、またこのような半連続運転を時間制御な
どによつて自動的に繰返して実施することも公知
である。Prior Art When filtering a suspension to obtain a purified filtrate, filtration operation is stopped when filter slag accumulates on the filter medium and the filtration rate decreases, or when the filtration efficiency deteriorates due to an increase in filtration pressure. Stop and clean or replace the filter media.
It is known to perform filtration operation again after regenerating the filter medium, and it is also known to automatically repeat such semi-continuous operation by time control or the like.
しかしながら、単一種類の原液を濾過処理する
場合には単純な濾材再生を行う自動運転であつて
も濾液の相互汚染の問題は起らないが、複数種類
の原液をそれぞれ濾過処理しようとすると小容量
の濾過設備を複数系列設置しなければならず、不
経済であつた。また一方、単一の濾過設備を使用
して複数種類の原液、たとえばそれぞれ配合の異
なるメツキ浴液などを切換えて濾過しようとする
ときは、濾液のみならず濾滓についても混合汚染
の発生を避けるため液の回収や装置の洗浄に多大
の時間と工数を必要とし、設備の稼働率を著しく
低下させるという問題もあつた。 However, when filtering a single type of stock solution, the problem of mutual contamination of filtrate does not occur even in automatic operation that performs simple filter media regeneration, but when trying to filter multiple types of stock solutions individually, It was necessary to install multiple lines of filtration equipment with different capacities, which was uneconomical. On the other hand, when using a single filtration equipment to switch and filter multiple types of stock solutions, such as plating bath solutions with different formulations, avoid mixing and contaminating not only the filtrate but also the filter slag. There was also the problem that a large amount of time and man-hours were required to collect the accumulated liquid and to clean the equipment, which significantly reduced the operating rate of the equipment.
従つて、従来は、ある程度の混合汚染が止むを
得ない場合の他は、単一の濾過設備を使用して複
数種類の原液を切り換えながら処理することは避
けられていた。 Therefore, in the past, it has been avoided to use a single filtration facility and process multiple types of stock solutions while switching between them, unless some degree of mixing and contamination is unavoidable.
解決しようとする問題点
上述のように、複数種類の原液を濾過処理する
に当つて、切換えて処理することが容易にできて
濾液などの混合汚染の発生を避けうる効率的な濾
過設備が望まれていたのに対して、本発明はこれ
に応えうる濾過方法とこの方法に適した自動濾過
装置を提供しようとするものである。Problems to be Solved As mentioned above, when filtering multiple types of stock solutions, it is desirable to have efficient filtration equipment that can be easily switched and processed to avoid mixed contamination of filtrate, etc. However, the present invention aims to provide a filtration method capable of meeting this requirement and an automatic filtration device suitable for this method.
問題点を解決するための手段
このような本発明の目的は、上部集液式の主濾
過器と上部集液式であつて該主濾過器の３−10％
の濾過面積を有する副濾過器とを使用して、先ず
原液を該主濾過器に順方向に流して濾過処理をす
る濾過工程を実行し、次に該主濾過器内の残留濾
液を回収すると共に残留原液を該副濾過器に順方
向に流して濾液を回収する残液回収工程を実行
し、続いて該副濾過器を逆方向に通して濾材を洗
浄した洗浄液を該主濾過器に順方向に流して装置
内および濾滓を洗浄すると共に該主濾過器および
該副濾過器内に洗浄液を充満させる洗浄水張り工
程を実行し、次いで該主濾過器内に供給した加圧
空気を用いて該主濾過器内の洗浄液による該主濾
過器の逆洗を行つて濾滓を遊離排出したのち装置
内の残留洗浄液のすべてを排出する逆洗工程を実
行することを、それぞれ繰返す濾過方法を採用す
ることによつて達成できる。Means for Solving the Problems The object of the present invention is to provide an upper liquid collection type main filter and an upper liquid collection type main filter that can reduce 3 to 10% of the main filter.
A filtration process is performed in which the stock solution is first flowed forward into the main filter for filtration using a sub-filter having a filtration area of , and then the residual filtrate in the main filter is collected. At the same time, a residual liquid recovery step is carried out in which the remaining stock solution is passed forward through the sub-filter to collect the filtrate, and then the washing liquid that has washed the filter medium is passed through the sub-filter in the reverse direction and then sequentially flows into the main filter. A cleaning water filling process is carried out in which the main filter and the sub-filter are filled with cleaning liquid, and then the pressurized air supplied into the main filter is used to wash the inside of the device and the filter slag. A filtration method is adopted in which the main filter is backwashed with the cleaning liquid in the main filter to discharge the filter slag, and then a backwashing process is performed in which all of the residual cleaning liquid in the device is discharged. This can be achieved by doing.
そしてこの方法によつて異種の原液の濾過処理
を、相互の混合汚染を発生することなく効率よく
実施できるようになつた。 This method has made it possible to efficiently filter different stock solutions without causing mutual contamination.
さらにまた本発明の方法は、原液槽と、濾過槽
と、廃液槽と、原液ポンプと、主濾材を中間に設
け上部に主濾液室および下部に主原液室を有する
主濾過器と、該主濾材の３−10％の濾過面積を有
する副濾材を中間に設け上部に副濾液室および下
部に副原液室を有する副濾過器と、該原液ポンプ
を運転して原液を該原液槽から該主原液室に供給
すると共に該主濾液室からの濾液を所定時間該原
液槽へ還流したのち該濾液槽へ切替えて回収し計
画された時間運転して停止する濾過工程、該主濾
液室の内容を該原液槽に開放すると共に加圧エア
を該主原液室に供給してその内容を該副原液室か
ら該副濾材を通過させ該副濾液室を経て該原液槽
へ回収する残液回収工程、洗浄液を該副濾液室か
ら該副濾材、該副原液室、該主原液室、該主濾
材、該主濾液室へ順次通過充満させると共に余剰
の洗浄液を該廃液槽に流出させる洗浄水張り工
程、および加圧空気を該主濾液室へ供給して該主
濾過器内の圧力を高めたのち該主原液室の内容を
該廃液槽に対して開放することによつて該主濾材
を逆洗すると共に該主濾過器および該副濾過器に
充満した内容をすべて該廃液槽に排出する逆洗工
程を、起動指令信号により順次に運転するように
構成された運転制御手段と、を備えた自動濾過装
置を用いることによつて、自動的かつ効率的に実
施することができる。 Furthermore, the method of the present invention includes: a stock solution tank, a filtration tank, a waste solution tank, a stock pump, a main filter having a main filter medium in the middle and a main filtrate chamber in an upper part and a main stock solution chamber in a lower part; A sub-filter is provided with a sub-filter having a filtration area of 3-10% of the filter medium in the middle, and has a sub-filtrate chamber at the top and a sub-stock solution chamber at the bottom, and the stock pump is operated to transfer the stock solution from the stock tank to the main tank. A filtration process in which the filtrate from the main filtrate chamber is supplied to the stock solution chamber, and the filtrate from the main filtrate chamber is returned to the stock solution tank for a predetermined period of time, and then switched to the filtrate tank for collection, operated for a planned time, and then stopped; a residual liquid recovery step of opening the stock solution tank and supplying pressurized air to the main stock solution chamber, causing the contents to pass from the sub-stock solution chamber through the sub-filtering medium, and collecting the content into the stock solution tank via the sub-filtrate chamber; a cleaning water filling step in which the cleaning liquid is sequentially passed through and filled from the sub-filtrate chamber to the sub-filter medium, the sub-stock solution chamber, the main stock-solution chamber, the main filter medium, and the main filtrate chamber, and the excess wash liquid is drained into the waste liquid tank; supplying pressurized air to the main filtrate chamber to increase the pressure within the main filter, and then backwashing the main filter medium by opening the contents of the main liquid chamber to the waste tank; An automatic filtration device comprising: an operation control means configured to sequentially operate a backwashing step in which all contents filled in the main filter and the sub-filter are discharged to the waste liquid tank based on a start command signal. It can be carried out automatically and efficiently by using .
実施例
本発明の自動濾過装置のフローシートを第１図
に示す。EXAMPLE A flow sheet of the automatic filtration device of the present invention is shown in FIG.
１は原液槽、２は原液ポンプ、３は濾過槽、４
は廃液槽、５は主濾過器、６は副濾過器である。
主濾過器５は、主濾材５ａを中間板５ｂに垂設し
てあつて、中間板５ｂより下が主原液室５ｃ、上
が主濾液室５ｄを構成する。また副濾過器６も主
濾過器５と同様な構造を有していて、副濾材６ａ
が中間板６ｂに垂設され、下部が副原液室６ｃ、
上部が副濾液室６ｄである。副濾材６ａの濾過面
積は主濾材５ａの濾過面積の３−10％の範囲で選
ばれる。 1 is a stock tank, 2 is a stock pump, 3 is a filtration tank, 4
5 is a waste liquid tank, 5 is a main filter, and 6 is a sub-filter.
The main filter 5 has a main filter medium 5a vertically disposed on an intermediate plate 5b, with a main liquid chamber 5c below the intermediate plate 5b and a main filtrate chamber 5d above the intermediate plate 5b. Further, the sub-filter 6 also has the same structure as the main filter 5, and has a sub-filter 6a.
is vertically installed on the intermediate plate 6b, and the lower part is an auxiliary stock solution chamber 6c,
The upper part is the sub-filtrate chamber 6d. The filtration area of the auxiliary filter medium 6a is selected within the range of 3-10% of the filtration area of the main filter medium 5a.
原液ポンプ２と主原液室５ｄ下部とは弁Ｖ１を
有する管を結ばれ、主原液室５ｄ下部と副原液室
６ｄ下部とは弁Ｖ３を有する管で結ばれる。また
主原液室５ｄの下部からは弁Ｖ７を経て廃液槽４
に連絡している。主濾液室５ｃの底部からは弁Ｖ
２を経て濾液槽３に連絡すると共に弁Ｖ１０を経
て原液槽１に連絡している。また主濾液室５ｃの
頂部からは弁Ｖ６を経て廃液槽４へ連絡してい
る。副濾液室６ｃからは弁Ｖ４を経て原液槽１に
連絡しており、洗浄液は弁Ｖ５を備えた管で副濾
液室６ｃに供給されるようになつている。また、
加圧空気は弁Ｖ８を経て主原液室５ｄの上部に供
給されると共に弁Ｖ９を経て主濾液室５ｃ底部に
供給されるようになつている。また弁Ｖ１１は主
原液室５ｄの中部から原液槽１への連絡を開閉す
るためのものである。 The stock solution pump 2 and the lower part of the main stock solution chamber 5d are connected by a pipe having a valve V1, and the lower part of the main stock solution chamber 5d and the lower part of the sub-stock solution chamber 6d are connected by a pipe having a valve V3. In addition, the waste liquid tank 4 is connected from the lower part of the main liquid chamber 5d via the valve V7.
is in contact with. A valve V is inserted from the bottom of the main filtrate chamber 5c.
It is connected to the filtrate tank 3 through the valve V10, and to the stock liquid tank 1 through the valve V10. Further, the top of the main filtrate chamber 5c is connected to the waste liquid tank 4 via a valve V6. The sub-filtrate chamber 6c is connected to the stock solution tank 1 via a valve V4, and the cleaning liquid is supplied to the sub-filtrate chamber 6c through a pipe provided with a valve V5. Also,
The pressurized air is supplied to the upper part of the main liquid chamber 5d via the valve V8, and is also supplied to the bottom of the main filtrate chamber 5c via the valve V9. Further, the valve V11 is for opening and closing the communication from the middle part of the main stock solution chamber 5d to the stock solution tank 1.
これらの弁は、運転制御装置７から送られる制
御信号によつてそれぞれが開閉される。運転制御
装置７は、第２図に示すような逐次制御を行なう
ようなプログラムを内蔵しており、そのプログラ
ムに従つて各々の弁に制御信号を送るようになつ
ている。 These valves are respectively opened and closed by control signals sent from the operation control device 7. The operation control device 7 has a built-in program for sequential control as shown in FIG. 2, and sends control signals to each valve in accordance with the program.
このように構成された本発明の自動濾過装置に
よつて、次のような手順で濾過操作が行われる。
すなわち、先ず原液ポンプ２を運転し弁Ｖ１を経
て主原液室５ｄへ原液を送る。主濾材５ａで濾過
された濾液は、はじめ弁Ｖ１０を経て原液槽１へ
戻るが、濾過が安定したころ弁Ｖ１０が閉じ弁Ｖ
２が開いて濾液槽３に送られる（濾過工程）。濾
過圧の上昇又は一定時間の経過により、原液ポン
プ１を停止し、弁１と弁２が閉じられ、同時に弁
Ｖ１０を開いて主濾液室５ｃ内の濾液を原液槽１
に回収すると共に弁Ｖ８を開いて加圧空気を主原
液室５ｄの上部に供給し、この際必要ならば弁Ｖ
１０を閉じて弁Ｖ１１を開き、主原液室５ｄ内の
原液をある程度の量原液槽１に回収したのち弁Ｖ
１１を閉じる。弁Ｖ１０およびＶ１１がいづれも
閉じられて主原液室５ｄの圧力が高まり始めた
ら、弁Ｖ３および弁Ｖ４を用いて主原液室５ｄ内
の原液および主濾材５ａより剥離した一部の濾滓
を副原液室６ｄに送り、副濾材６ａにより濾過さ
れた濾液は副濾液室６ｃから弁Ｖ４を経て原液槽
１に回収される。主原液室５ｄから空気が副原液
室６ｄに送られるようになれば、弁Ｖ８と弁Ｖ４
を閉じて残液回収工程を終了する。 With the automatic filtration apparatus of the present invention configured as described above, a filtration operation is performed in the following procedure.
That is, first, the stock solution pump 2 is operated to send the stock solution to the main stock solution chamber 5d via the valve V1. The filtrate filtered by the main filter medium 5a first returns to the stock solution tank 1 via the valve V10, but when the filtration is stabilized, the roller valve V10 closes the valve V.
2 is opened and sent to the filtrate tank 3 (filtration step). When the filtration pressure increases or a certain period of time passes, the stock solution pump 1 is stopped, valves 1 and 2 are closed, and at the same time, the valve V10 is opened to transfer the filtrate in the main filtrate chamber 5c to the stock solution tank 1.
At the same time, valve V8 is opened to supply pressurized air to the upper part of the main liquid chamber 5d, and at this time, if necessary, valve V
10 is closed and valve V11 is opened, and after collecting a certain amount of the stock solution in the main stock solution chamber 5d into stock solution tank 1, valve V
Close 11. When both valves V10 and V11 are closed and the pressure in the main stock solution chamber 5d begins to rise, valves V3 and V4 are used to remove the stock solution in the main stock solution chamber 5d and some filter dregs separated from the main filter medium 5a. The filtrate sent to the stock solution chamber 6d and filtered by the sub-filter medium 6a is collected into the stock solution tank 1 from the sub-filtrate chamber 6c via the valve V4. Once air is sent from the main stock solution chamber 5d to the sub stock solution chamber 6d, valves V8 and V4
Close it to complete the residual liquid collection process.
前記の残液回収工程に続いて、弁Ｖ３を開いた
まま弁Ｖ５および弁Ｖ６を開き、洗浄液を副濾液
室６ｃから導入して副濾材６ａを逆洗し、弁Ｖ３
を経て再び主原液室５ｄへ送り、主濾材５ａとそ
の上に残留する濾滓とを洗浄しつつ洗浄液は主濾
液室５ｃから弁Ｖ６を経て廃液槽４へ排出され
る。副濾過器６および主濾過器５の内部が洗浄液
で置換充満されたら、弁Ｖ３、弁Ｖ５および弁Ｖ
６を閉じて逆洗水張り工程を終了する。 Following the residual liquid recovery step, the valves V5 and V6 are opened while the valve V3 is kept open, and the washing liquid is introduced from the sub-filtrate chamber 6c to backwash the sub-filter medium 6a.
The washing liquid is then sent to the main liquid chamber 5d again, and is discharged from the main filtrate chamber 5c to the waste liquid tank 4 through the valve V6 while washing the main filter medium 5a and the filter cake remaining thereon. When the insides of the sub-filter 6 and the main filter 5 are replaced and filled with the cleaning liquid, the valves V3, V5, and V
6 is closed to complete the backwash water filling process.
次いで、弁Ｖ９を開いて加圧空気を主濾液室５
ｃに導入し、充分に加圧されたら弁Ｖ７を開放し
て主濾液室５ｃ内の洗浄液を主濾材５ａに逆方向
に流し、主濾材５ａの表面に残つた濾滓を剥離さ
せて主原液室５ｄ内の洗浄液と共に弁Ｖ７を経て
廃液槽４にすべて排出する。この逆洗工程によつ
て装置内の清掃が終るので、再び原液を濾過する
ための準備が整つたことになる。 Next, open valve V9 to supply pressurized air to main filtrate chamber 5.
c, and when it is sufficiently pressurized, open the valve V7 to flow the cleaning liquid in the main filtrate chamber 5c in the opposite direction to the main filter medium 5a, peel off the filter slag remaining on the surface of the main filter medium 5a, and remove the main stock solution. It is all discharged into the waste liquid tank 4 through the valve V7 together with the cleaning liquid in the chamber 5d. This backwashing process completes the cleaning of the inside of the device, making preparations for filtering the stock solution again.
このあと、異つた種類の原液について濾過を行
なう場合には、原液槽１および必要に応じて原液
ポンプ２を切り換えると共に原液槽１および濾液
槽３への戻りの管も、それぞれ対象となる液のも
のへ切り換えればよい。処理対象の液を切り換え
たあとの運転操作は、前述と同様である。 After this, when performing filtration on a different type of stock solution, switch the stock solution tank 1 and, if necessary, the stock solution pump 2, and also connect the return pipes to the stock solution tank 1 and filtrate tank 3, respectively. Just switch to something else. The operation after switching the liquid to be treated is the same as described above.
以上、説明したような装置を用いて、本発明の
濾過方法を実施した結果、洗浄終了後に装置内に
残留した液量とその濃度を調べたところ、従来実
施されていたような、濾過器内を濾液で逆洗して
濾材から濾滓を除去し、ドレンを排出したのち洗
浄液たとえば用水を充満して装置内を循環し、そ
の液を排出する方法に比較して、装置内に残留し
た固形分量は約10分の１に減少していた。 As a result of implementing the filtration method of the present invention using the device described above, we investigated the amount of liquid remaining in the device after cleaning and its concentration, and found that Compared to the method of backwashing with filtrate to remove filter scum from the filter medium, draining the drain, filling the device with a cleaning solution such as water, circulating the device, and discharging the liquid, the solids remaining in the device are The amount had been reduced to about one-tenth.
本発明において、副濾過器の濾過面積が主濾過
器の３％未満では残液回収に時間がかかると共に
回収能率が低下し、また10％を超えると装置内残
液量が増えて回収効率が低くなるので、副濾過器
の濾材の面積は主濾過器の３−10％の範囲内とす
べきである。 In the present invention, if the filtration area of the sub-filter is less than 3% of the main filter, it will take time to collect the residual liquid and the collection efficiency will decrease, and if it exceeds 10%, the amount of residual liquid in the device will increase and the collection efficiency will decrease. The area of the filter media in the sub-filter should be within 3-10% of that of the main filter.
発明の効果
以上、詳しく述べたように、本発明によれば装
置内に残留する液の回収が効率的に実施でき、ま
た装置内の洗浄も効率よく行え、従来技術に比較
して装置内に残留する固形分の総量は10分の１程
度とすることが容易である。従つて高価な処理
液、たとえばメツキ浴などの濾過処理が非常に経
済的にできるようになり、環境汚染の危険も著し
く減少した。Effects of the Invention As described in detail above, according to the present invention, the liquid remaining in the device can be efficiently recovered, the device can also be cleaned efficiently, and the device can be cleaned more efficiently than the conventional technology. The total amount of remaining solid content can easily be reduced to about 1/10. Therefore, filtration of expensive treatment liquids, such as plating baths, can now be carried out very economically, and the risk of environmental pollution has been significantly reduced.
また本発明は、単一の処理液の濾過を繰返す際
の経済性ばかりでなく、複数種の処理液を切換え
て濾過するに当つても処理液相互の混合汚染を著
しく低レベルで止めることができるから、複数の
濾過装置を別系統として設置するなどの必要がな
く、設備建設費や設備面積などの面で至つて経済
的である。 Furthermore, the present invention is not only economical when repeating filtration of a single treatment liquid, but also prevents mixing and contamination between treatment liquids at a significantly low level when switching between multiple types of treatment liquids. Because of this, there is no need to install multiple filtration devices as separate systems, and it is extremely economical in terms of equipment construction costs and equipment area.
また更に、装置の運転操作も合理的で、液回収
洗浄が短時間ですみ、装置の実稼働効率が高く、
処理対象液が複数であるときには益々その特長が
発揮される。 Furthermore, the operation of the equipment is rational, liquid collection and cleaning can be done in a short time, and the actual operating efficiency of the equipment is high.
When there are a plurality of liquids to be treated, its advantages are even more pronounced.
第１図は、本発明の自動濾過装置のフローシー
トであり、第２図は、本発明の濾過方法の操作手
順を示すチヤートである。
FIG. 1 is a flow sheet of the automatic filtration apparatus of the present invention, and FIG. 2 is a chart showing the operating procedure of the filtration method of the present invention.
Claims (1)
と、主濾材を中間に設け上部に主濾液室および下
部に主原液室を有する主濾過器と、該主濾材の３
〜10％の濾過面積を有する副濾材を中間に設け上
部に副濾液室および下部に副原液室を有する副濾
過器と、該原液ポンプを運転して原液を該原液槽
から該主原液室に供給すると共に該主濾液室から
の濾液を所定時間該原液槽へ還流したのち該濾液
槽へ切替えて回収し計画された時間運転して停止
する濾過工程、該主濾液室の内容を該原液槽に開
放すると共に加圧空気を該主原液室に供給してそ
の内容を該副原液室から該副濾材を通過させ該副
濾液室を経て該原液槽へ回収する残液回収工程、
洗浄液を該副濾液室から該副濾材、該副原液室、
該主原液室、該主濾材、該主濾液室へ順次通過充
満させると共に余剰の洗浄液を該廃液槽に流出さ
せる洗浄水張り工程、および加圧エアを該主濾液
室へ供給して該主濾過器内の圧力を高めたのち該
主原液室の内容を該廃液槽に対して開放すること
によつて該主濾材を逆洗すると共に該主濾過器お
よび該副濾過器に充満した内容をすべて該廃液槽
に排出する逆洗工程を、起動指令信号により順次
に運転するように構成された運転制御手段と、を
備えたことを特徴とする自動濾過装置。 ２ 上部集液式の主濾過器と上部集液式であつて
該主濾過器の３−10％の濾過面積を有する副濾過
器を使用して複数種類の原液を切換えながら濾過
処理を行なうに当り、先ず原液を該主濾過器に順
方向に流して濾過処理をする濾過工程を実行し、
次に該主濾過器内の残留濾液を回収すると共に残
留原液を該副濾過器に順方向に流して濾液を回収
する残液回収工程を実行し、続いて該副濾過器を
逆方向に通して濾材を洗浄した洗浄液を該主濾過
器に順方向に流して装置内および濾滓を洗浄する
と共に該主濾過器および該副濾過器内に洗浄液を
充満させる洗浄水張り工程を実行し、次いで該主
濾過器内に供給した加圧空気を用いて該主濾過器
内の洗浄液による該主濾過器の逆洗を行つて濾滓
を遊離排出したのち装置内の残留洗浄液のすべて
を排出する逆洗工程を実行することを、それぞれ
繰返して実施することを特徴とする濾過方法。[Scope of Claims] 1. A stock solution tank, a filtration tank, a waste solution tank, a stock pump, a main filter having a main filter medium in the middle and having a main filtrate chamber in the upper part and a main stock solution chamber in the lower part, and the main filter medium. No. 3
A sub-filter with a sub-filter medium having a filtration area of ~10% in the middle and a sub-filtrate chamber at the top and a sub-stock solution chamber at the bottom, and the stock pump is operated to transfer the stock solution from the stock solution tank to the main stock solution chamber. A filtration process in which the filtrate from the main filtrate chamber is supplied and refluxed to the stock solution tank for a predetermined period of time, and then switched to the filtrate tank and collected, operated for a scheduled time, and then stopped; a residual liquid recovery step, in which the main liquid chamber is opened to the main liquid chamber and pressurized air is supplied to the main liquid chamber, the contents of which are passed through the secondary filter medium from the secondary liquid chamber, and recovered into the liquid tank via the secondary filtrate chamber;
The cleaning liquid is transferred from the sub-filtrate chamber to the sub-filter medium, the sub-stock solution chamber,
A cleaning water filling process in which the main raw solution chamber, the main filter medium, and the main filtrate chamber are sequentially passed through and filled, and excess cleaning liquid is discharged into the waste liquid tank, and pressurized air is supplied to the main filtrate chamber to fill the main filtrate chamber. After increasing the internal pressure, the contents of the main liquid chamber are released to the waste liquid tank, thereby backwashing the main filter medium and draining all the contents filled in the main filter and the sub-filter. An automatic filtration device comprising: operation control means configured to sequentially operate a backwash process for discharging into a waste liquid tank based on a start command signal. 2. To perform filtration treatment while switching between multiple types of stock solutions using a main filter with an upper liquid collection type and a sub-filter with an upper liquid collection type and having a filtration area of 3-10% of the main filter. First, a filtration process is performed in which the stock solution is passed forward through the main filter for filtration treatment,
Next, a residual liquid recovery step is performed in which the residual filtrate in the main filter is collected, and the remaining stock solution is passed forward to the sub-filter to recover the filtrate, and then the remaining stock solution is passed through the sub-filter in the reverse direction. A cleaning water filling step is carried out in which the cleaning liquid that has been used to clean the filter medium is flowed forward through the main filter to clean the inside of the device and the filter slag, and the main filter and the sub-filter are filled with the cleaning liquid. Backwashing that uses pressurized air supplied into the main filter to backwash the main filter with the cleaning liquid in the main filter, discharge the filter slag, and then discharge all of the residual cleaning liquid in the device. A filtration method characterized in that each of the steps is repeated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60146751A JPS627411A (en) | 1985-07-05 | 1985-07-05 | Automatic filter apparatus and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60146751A JPS627411A (en) | 1985-07-05 | 1985-07-05 | Automatic filter apparatus and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS627411A JPS627411A (en) | 1987-01-14 |
| JPH0228369B2 true JPH0228369B2 (en) | 1990-06-22 |
Family
ID=15414761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60146751A Granted JPS627411A (en) | 1985-07-05 | 1985-07-05 | Automatic filter apparatus and method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS627411A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009148680A (en) * | 2007-12-19 | 2009-07-09 | Fujiwara Techno-Art Co Ltd | Method for recovering stock solution in filtration apparatus |
-
1985
- 1985-07-05 JP JP60146751A patent/JPS627411A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS627411A (en) | 1987-01-14 |
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