JPS6223412A - Method for removing clogging of filtering material for filter machine - Google Patents
Method for removing clogging of filtering material for filter machineInfo
- Publication number
- JPS6223412A JPS6223412A JP60163520A JP16352085A JPS6223412A JP S6223412 A JPS6223412 A JP S6223412A JP 60163520 A JP60163520 A JP 60163520A JP 16352085 A JP16352085 A JP 16352085A JP S6223412 A JPS6223412 A JP S6223412A
- Authority
- JP
- Japan
- Prior art keywords
- water
- vinyl chloride
- valve
- filter
- line
- 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
Landscapes
- Filtration Of Liquid (AREA)
Abstract
Description
【発明の詳細な説明】
[産業上の利用分野]
本発明は塩化ビニール製造工程で生ずる廃水等の)濾過
橢用ろ材の目詰まり除去方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for removing clogging of a filter medium for filtration (waste water etc. generated in a vinyl chloride manufacturing process).
[従来の技術]
塩化ビニール製造工程で生ずる廃水中には、塩化ビニー
ルの微粉末とポリビニルアルコール等が含有されている
ため、第2図に示すように原液槽4に貯留した廃水(約
40〜60℃)をフィルタポンプ5により)濾過槽1に
送り、ろ月2で)濾過した)月夜をろ液排出ライン8か
ら排出するようにし、1戸人した塩化ビニール粉末を回
収するようしている。[Prior Art] Wastewater generated in the vinyl chloride manufacturing process contains fine powder of vinyl chloride, polyvinyl alcohol, etc. Therefore, as shown in FIG. 60°C) is sent to the filtration tank 1 by the filter pump 5, and the tsukiyo (filtered by the filter pump 5) is discharged from the filtrate discharge line 8, and the vinyl chloride powder collected per person is collected. .
しかし、前記廃水を40〜60℃の温度で)濾過すると
、ポリビニルアルコールと塩化ビニル粉末がi戸材2表
面に徐々に蓄積し、大幅に)濾過処理量が減少する。However, when the wastewater is filtered at a temperature of 40 to 60[deg.] C., polyvinyl alcohol and vinyl chloride powder gradually accumulate on the surface of the door material 2, which significantly reduces the amount of filtration.
そのため、従来はろ材2の目詰まりを防止するため、前
記ろ液排出ライン8に圧縮空気注入ライン15を接続し
、該注入ライン15から圧縮空気をろ材2の内側に入れ
、廃液中で逆洗浄すると共に廃液のバブリングにより、
ろ材2の洗浄を行なっていた。Therefore, conventionally, in order to prevent clogging of the filter medium 2, a compressed air injection line 15 is connected to the filtrate discharge line 8, and compressed air is injected into the inside of the filter medium 2 from the injection line 15, and backwashing is performed in the waste liquid. At the same time, due to bubbling of waste liquid,
Filter medium 2 was being cleaned.
「発明が解決しようとする問題点]
しかし、この圧縮空気による逆洗浄と廃液のバブリング
とによっても、洗浄効果は充分でなく、すぐに目詰まり
を起してしまい、頻繁な洗浄操作を必要としていた。``Problems to be solved by the invention'' However, even with this backwashing using compressed air and bubbling of waste liquid, the cleaning effect is not sufficient and clogging occurs quickly, requiring frequent cleaning operations. there was.
更に、洗浄による再生を繰り返していくと洗浄効果が殆
ど上らなくなるため、ろ材を分解してブラシ等で洗浄す
るか或はろ材を新らしいものに取換える必要があった。Furthermore, if regeneration by cleaning is repeated, the cleaning effect will hardly improve, so it is necessary to disassemble the filter medium and clean it with a brush or the like, or to replace the filter medium with a new one.
[問題点を解決するための手段コ
本発明者は、40〜60℃の範囲ではポリビニルアルコ
ールの溶解度が低いため、洗浄効果は充分でないが、3
0℃以下の水を使用するとポリビニルアルコールの溶解
度が高まり、洗浄効果が著しく向上することを見出し本
発明を完成した。[Means for Solving the Problem] The present inventor has determined that the cleaning effect is not sufficient in the range of 40 to 60°C due to the low solubility of polyvinyl alcohol.
The present invention was completed based on the discovery that when water at a temperature of 0° C. or lower is used, the solubility of polyvinyl alcohol increases and the cleaning effect is significantly improved.
すなわち、本発明は)月相を30℃以下の水により洗浄
することを特徴とする)濾過様相)月相の目詰まり除去
方法にかかるものである。That is, the present invention relates to a method for removing clogging of a moon phase (filtration mode) characterized by washing the moon phase with water of 30° C. or lower.
し作 用]
塩化ビニール粉末及びポリビニルアルコールにより目詰
まりした)月相を30℃以下の水で洗浄すると、ポリビ
ニルアルコールが良く溶けるため塩化ビニール微粉末も
脱離し易くなり、著しく洗浄効果が高められる。Cleaning action] When the moon phase (which is clogged with vinyl chloride powder and polyvinyl alcohol) is washed with water at 30°C or lower, the polyvinyl alcohol dissolves well, making it easier for the fine vinyl chloride powder to be removed, and the cleaning effect is significantly enhanced.
[実 施 例] 以下、本発明の実施例を図面を参照しつつ説明する。[Example] Embodiments of the present invention will be described below with reference to the drawings.
第1図は本発明の実施に使用する)濾過設備の一例を示
すもので、1は)濾過槽、2は)月相、3は塩化ビニー
ル廃水ライン、4は廃水貯留用の原液槽、5はフィルタ
ポンプ、6は原液注入ライン、7はオーバーフロー1)
1出ライン、8は前記ン材2に接続した)月夜排出ライ
ン、9,10.11は前記各ライン6.7.8に夫々設
けたバルブであり、前記)月夜排出ライン8のバルブ1
1上流側に、バルブ12を有する水供給ライン13を接
続すると共にバルブ14を有する圧縮空気注入ライン1
5を接続し、前記原液注入ライン6のバルブ9下流側に
バルブ16を有する水供給ライン17を接続すると共に
バルブ18を有する水排出ライン19を接続しである。Figure 1 shows an example of filtration equipment used in carrying out the present invention, in which 1 is a filtration tank, 2 is a moon phase, 3 is a vinyl chloride wastewater line, 4 is a raw solution tank for wastewater storage, and 5 is the filter pump, 6 is the stock solution injection line, and 7 is the overflow 1)
1 output line, 8 is a) Tsukiyo discharge line connected to the above-mentioned material 2, 9, 10.11 are valves provided in each of the above-mentioned lines 6.7.8, and valve 1 of the above-mentioned) Tsukiyo discharge line 8.
1 Upstream, a compressed air injection line 1 is connected with a water supply line 13 having a valve 12 and has a valve 14.
5 is connected, and a water supply line 17 having a valve 16 is connected to the downstream side of the valve 9 of the stock solution injection line 6, and a water discharge line 19 having a valve 18 is connected.
図中、20は罎過槽1の下部に設けた排出バルブを示す
。In the figure, 20 indicates a discharge valve provided at the bottom of the filter tank 1.
該)月相2の目詰まり除去方法は以下の通りである。The method for removing clogging during moon phase 2 is as follows.
塩化ビニール微粉末及びポリビニルアルコールを含有す
る塩化ビニール廃水を塩化ビ呉−ル廃水ライン3により
原液槽4に送って貯留し、フィルタポンプ5により原液
注入ライン6を経て)濾過槽1内に送る。該)濾過槽1
内では、)月相2により)濾過された)月夜が)月夜排
出ライン8から排出され、塩化ビニール微粉末及びポリ
ビニルアルコールがン月相2の外側に溜まる。Vinyl chloride wastewater containing fine vinyl chloride powder and polyvinyl alcohol is sent to a stock solution tank 4 via a vinyl chloride wastewater line 3 and stored therein, and sent into the filtration tank 1 via a stock solution injection line 6 by a filter pump 5. ) Filter tank 1
Inside, the moonlit night filtered by the moon phase 2 is discharged from the moonlit discharge line 8, and fine vinyl chloride powder and polyvinyl alcohol accumulate outside the moon phase 2.
)濾過終了後)月相2表面に付着しているろ滓を排出バ
ルブ20を問いて排出する。) After completion of filtration) The filter residue adhering to the surface of the moon phase 2 is discharged through the discharge valve 20.
)戸滓排出侵排出バルブ20を閉じ、バルブ10゜18
を開いて)濾過槽1内を大気圧とする。) Close the door slag discharge valve 20, and open the valve 10゜18.
) to bring the inside of the filtration tank 1 to atmospheric pressure.
該)濾過槽1を大気圧開放のまま、バルブ11を閉じて
(バルブ14は閉じたまま)バルブ12を開き、30
’C以下の水を水供給ライン13により)月相2の内側
()月夜排出側)に入れて逆洗浄する。) Leave the filtration tank 1 open to atmospheric pressure, close the valve 11 (leave the valve 14 closed), open the valve 12, and
Water with a temperature below 'C is introduced into the inside of the moon phase 2 (on the moon night discharge side) via the water supply line 13 for backwashing.
該)月相2に詰まっているポリビニルアルコールが溶は
易くなるため、塩化ビニール微粉末の詰まり状態も緩和
されて塩化ビニール微粉末が脱離し易くなり、逆洗浄水
の通りがよくなる。Since the polyvinyl alcohol clogged in the moon phase 2 becomes easier to dissolve, the clogging condition of the fine vinyl chloride powder is alleviated, the fine vinyl chloride powder is easily detached, and the backwashing water can easily pass through.
次いで、バルブ12を閉じて水の供給を停止し、バルブ
14を開いて圧縮空気供給うイン15から圧縮空気を)
月相2の内側に流して逆洗浄する。これにより、)月相
2に詰まった塩化ビニール微粉末が更に効果的に除去さ
れる。Then, the valve 12 is closed to stop the water supply, and the valve 14 is opened to supply compressed air from the compressed air supply inlet 15).
Pour it inside the moon phase 2 to backwash. As a result, the vinyl chloride fine powder stuck in the moon phase 2 can be removed more effectively.
以上の30℃以下の水による逆洗浄操作と圧縮空気によ
る逆洗浄操作を数回繰り返す、この間の逆洗浄水は水排
出ライン19又は排出バルブ20を通して排出される。The above-described backwashing operation using water at 30° C. or lower and backwashing operation using compressed air are repeated several times, and the backwashing water during this time is discharged through the water discharge line 19 or the discharge valve 20.
)月相2の詰まり方が通常の程度であれば、以上の逆洗
浄操作で十分であるが、)月相2の詰まり方が著しい場
合には更に以下の操作を行なう。) If the lunar phase 2 is clogged to a normal degree, the above backwashing operation is sufficient; however, if the lunar phase 2 is significantly clogged, the following operation is further performed.
水排出ライン19のバルブ18及び排出バルブ20を閉
じ、バルブ12を開いて30℃以下の水を水供給ライン
13により)月相2に逆洗浄状態で流し、濾過槽1内を
水で充満させ、オーバーフロー排出ライン7から水がオ
ーバーフローしたら前記バルブ12を閉じ水の供給を停
止する。このとき、)月相2の水による逆洗浄効果が前
記の洗浄操作により既にある程度得られている場合には
、バルブ16を問いて水注入ライン17により30℃以
下の水を一部又は全部)濾過槽1内に注入してもよい。The valve 18 and the discharge valve 20 of the water discharge line 19 are closed, the valve 12 is opened, and water at a temperature of 30°C or lower is flowed through the water supply line 13 in a backwashing state during the moon phase 2, and the inside of the filter tank 1 is filled with water. When water overflows from the overflow discharge line 7, the valve 12 is closed to stop the water supply. At this time, if a certain degree of backwashing effect has already been achieved with the water of moon phase 2 through the above-mentioned cleaning operation, some or all of the water below 30°C is injected into the water injection line 17 by turning on the valve 16). It may also be injected into the filtration tank 1.
次に、バルブ14を開いて圧縮空気を)月相2内側に投
入し、30℃以下の水中で圧縮空気により逆洗浄し、)
月相2外表面をバブリングする。従って、30℃以下の
水と圧縮空気による逆洗浄とバブリング効果とによって
、相乗的に洗浄効果が増大する。Next, open the valve 14 and inject compressed air into the inside of the moon phase 2, and backwash it with compressed air in water below 30 degrees Celsius.
Bubble the outer surface of Moon Phase 2. Therefore, the cleaning effect is synergistically increased by the backwashing and bubbling effect using water at 30° C. or lower and compressed air.
以上の洗浄操作が完了したら、バルブ14を閉じ、次い
でバルブ9,10を開いてフィルタポンプ5により原液
槽4→フイルタポンプ5→)濾過槽1と原液を循環させ
、その後)濾過を開始する。When the above cleaning operation is completed, the valve 14 is closed, and then the valves 9 and 10 are opened to circulate the stock solution through the filter tank 1 through the filter pump 5 (from the stock solution tank 4 to the filter pump 5), and then) to start filtration.
尚、本発明の)濾過様相ろ材の目詰まり除去方法は上述
の実施例のみに限定されるものではなり、30℃以下の
水の中で圧縮空気による逆洗浄のみを行なってもよいこ
と、30℃以下の水による逆洗浄のみでもよいこと等本
発明の要旨を逸脱しない範囲内において種々変更を加え
得ることは勿論である。It should be noted that the method for removing clogging of a filtration-like filter medium according to the present invention is not limited to the above-mentioned embodiments, and only backwashing with compressed air may be performed in water at 30° C. or lower. It goes without saying that various modifications may be made without departing from the gist of the present invention, such as the fact that only backwashing with water at temperatures below 0.degree. C. is sufficient.
[発明の効果コ
以上説明したように本発明の)濾過様相ろ材の目詰まり
除去方法によれば、下記の如き種々の円れた効果を発揮
する。[Effects of the Invention] As explained above, according to the method of removing clogging from a filtration mode filter medium of the present invention, various effects as described below are exhibited.
(D i2材を30℃以下の水で洗浄するようにした
ので、ポリビニルアルコールをよく溶かすことができる
ため、塩化ビニール微粉末も脱離し易くなり、洗浄効果
が著しく高められる。(Since the D i2 material is washed with water at 30° C. or lower, the polyvinyl alcohol can be well dissolved, so that the fine vinyl chloride powder is also easily removed, and the cleaning effect is significantly enhanced.
(II) 従来の洗浄方法では余り効果がなく、ろ材
の分解洗浄、或は取換えが必要であったのに対し、僅か
の追加設備により容易且つ効果的に実施することができ
て簡便である。(II) Conventional cleaning methods were not very effective and required disassembling and cleaning or replacing the filter media, but this method is simple and can be carried out easily and effectively with only a small amount of additional equipment. .
第1図は本発明の方法の実施に使用する)濾過設備の一
例を示す図、第2図は従来の)濾過設備の一例を示す図
である。
1は)濾過槽、2は;2材、7はオーバーフロー排出ラ
イン、8は1戸液排出ライン、10,11,1.2゜1
4j6,18はバルブ、13.17は水供給ライン、1
5は圧縮空気注入ライン、19は水排出ライン、20は
排出バルブを示す。FIG. 1 is a diagram showing an example of filtration equipment used in carrying out the method of the present invention, and FIG. 2 is a diagram showing an example of conventional filtration equipment. 1) filtration tank, 2; 2 materials, 7 overflow discharge line, 8 1 liquid discharge line, 10, 11, 1.2゜1
4j6, 18 are valves, 13.17 is water supply line, 1
5 is a compressed air injection line, 19 is a water discharge line, and 20 is a discharge valve.
Claims (1)
するろ過機用ろ材の目詰まり除去方法。1) A method for removing clogging of a filter medium for a filter, which comprises washing the filter medium with water at a temperature of 30° C. or lower.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60163520A JPS6223412A (en) | 1985-07-24 | 1985-07-24 | Method for removing clogging of filtering material for filter machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP60163520A JPS6223412A (en) | 1985-07-24 | 1985-07-24 | Method for removing clogging of filtering material for filter machine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6223412A true JPS6223412A (en) | 1987-01-31 |
Family
ID=15775428
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP60163520A Pending JPS6223412A (en) | 1985-07-24 | 1985-07-24 | Method for removing clogging of filtering material for filter machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6223412A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0698758A (en) * | 1992-09-22 | 1994-04-12 | Agency Of Ind Science & Technol | Cultivation method and cultivation apparatus |
-
1985
- 1985-07-24 JP JP60163520A patent/JPS6223412A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0698758A (en) * | 1992-09-22 | 1994-04-12 | Agency Of Ind Science & Technol | Cultivation method and cultivation apparatus |
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