JP3503681B2 - Coagulation and concentration equipment - Google Patents
Coagulation and concentration equipmentInfo
- Publication number
- JP3503681B2 JP3503681B2 JP31159398A JP31159398A JP3503681B2 JP 3503681 B2 JP3503681 B2 JP 3503681B2 JP 31159398 A JP31159398 A JP 31159398A JP 31159398 A JP31159398 A JP 31159398A JP 3503681 B2 JP3503681 B2 JP 3503681B2
- Authority
- JP
- Japan
- Prior art keywords
- chamber
- partition wall
- screen
- tank
- 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
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、同一の処理槽内
で原液と凝集剤を撹拌混合し、凝集した原液をろ過して
濃縮させ、この濃縮原液を脱水機に供給し、脱水機の負
荷を軽減させる装置に関し、特に、凝集剤と撹拌混合し
た原液の高い濃縮性を可能とすると共に、処理槽の濃縮
部に背圧を作用させて濃縮圧を低くすると共に、その濃
縮部の内圧を利用して脱水機に原液を圧入する装置に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to stirring and mixing an undiluted solution and an aggregating agent in the same processing tank, filtering the concentrated undiluted solution and concentrating it, supplying the concentrated undiluted solution to a dehydrator, and loading the dehydrator. In particular, it enables a high concentration of the stock solution stirred and mixed with the coagulant, reduces the concentration pressure by applying a back pressure to the concentration part of the processing tank, and reduces the internal pressure of the concentration part. The present invention relates to a device for press-fitting a stock solution into a dehydrator.
【０００２】[0002]
【従来の技術】従来、凝集反応槽の底部から供給した原
液に有機高分子凝集剤等を加えて撹拌し、凝集させた汚
泥を槽内の上部槽壁のスクリーンから原液をろ過して槽
外に排出し、高濃度の原液を得るようにした凝集反応槽
は、例えば、実公平６−３９７８６号公報に記載してあ
るように公知である。2. Description of the Related Art Conventionally, an organic polymer coagulant or the like is added to a stock solution supplied from the bottom of a flocculation reaction tank and stirred, and the coagulated sludge is filtered from the screen of the upper tank wall in the tank to remove it from the tank. A flocculation reaction tank which is discharged to a high concentration to obtain a high-concentration stock solution is known as described in, for example, Japanese Utility Model Publication No. 6-39786.
【０００３】[0003]
【発明が解決しょうとする課題】しかしながら、上記従
来の凝集反応槽は、希薄な原液が同一の処理槽内でろ液
の一部が抜き出され凝集濃縮されるので、ろ過機の負荷
を軽減できるものであるが、原液に供給された凝集剤が
汚泥と反応してフロックを形成する前に、凝集剤の一部
がろ液とともにスクリーンから流出する欠点があった。
また、凝集反応槽が開放型のため、脱水機に濃縮した原
液を供給するためには、濃縮液の貯溜タンクと供給ポン
プが必要であった。この発明は、凝集剤を有効に活用す
るとともに、凝集反応槽から濃縮液を直接脱水機に供給
できる装置を提供することを目的とする。However, in the above-mentioned conventional coagulation reaction tank, since the dilute stock solution is partially extracted and coagulated and concentrated in the same processing tank, the load on the filter can be reduced. However, there is a drawback that a part of the coagulant flows out from the screen together with the filtrate before the coagulant supplied to the stock solution reacts with the sludge to form flocs.
Further, since the flocculation reaction tank is an open type, in order to supply the concentrated stock solution to the dehydrator, a storage tank for the concentrated solution and a supply pump were required. It is an object of the present invention to provide an apparatus that can effectively utilize a flocculant and can supply a concentrated liquid directly from a flocculation reaction tank to a dehydrator.
【０００４】[0004]
【課題を解決するための手段】この発明の要旨とすると
ころは、処理槽の槽内原液の流入側に原液と凝集剤を混
合させる撹拌羽根と、槽内の濃縮液の取出側に回転自在
なスクレパーを設け、このスクレパーの周部に原液をろ
過してろ液を取り出すスクリーンを設けた装置におい
て、上記処理槽を密閉槽とし、この処理槽を流路を設け
た仕切壁で、原液と凝集剤を混合させる凝集室と、原液
をろ過する濃縮室とに区画したもので、凝集室で原液と
撹拌混合される凝集剤が充分に凝集反応する前に濃縮室
のスクリーンから流失するのを防止できるものである。
そして、上記処理槽の原液の供給管に圧入ポンプを連結
すると共に、処理槽の濃縮液の取出管を直接脱水機の給
泥口に接続すれば、圧入ポンプの圧入圧が濃縮ろ過圧力
として作用すると共に、ろ過機への濃縮液の圧入圧とな
るものである。The gist of the present invention is to provide a stirring blade for mixing the stock solution and the coagulant on the inflow side of the stock solution in the processing tank, and to freely rotate the extract side of the concentrated solution in the tank. In a device equipped with a scraper and a screen for filtering the stock solution around the scraper to take out the filtrate, the processing tank is a closed tank, and the processing tank is a partition wall provided with a flow path to aggregate with the stock solution. It is divided into a flocculating chamber for mixing agents and a concentrating chamber for filtering the stock solution to prevent the flocculating agent that is agitated and mixed with the stock solution in the flocculating chamber from flowing out from the screen of the concentrating chamber before a sufficient coagulation reaction occurs. It is possible.
Then, if a press-fitting pump is connected to the stock solution supply pipe of the treatment tank and the concentrate take-out pipe of the treatment tank is directly connected to the mud supply port of the dehydrator, the press-fitting pressure of the press-fitting pump acts as the concentration filtration pressure. At the same time, it becomes the press-fitting pressure of the concentrated liquid into the filter.
【０００５】上記スクリーンを処理槽の内周面に設け、
このスクリーンにスクレーパを回転自在に摺接させて目
詰まりを解消できるようにすると共に、スクリーンの背
面にろ液室を形成したものである。このスクリーンは、
スクリーンの水流方向後方の端部を、槽内の中心方向に
延設してその背面にろ液室を形成すると共に、スクレー
パの外周部と側面部をスクリーンに摺接させてもよいも
のである。このようにすれば、スクリーンのろ過面積を
大きくすることができ原液の濃縮水量の増加と原液濃度
が高められるものである。そして、上記スクリーンの背
面のろ液室を密閉状とし、このろ液室に接続したろ液抜
出用のヘッダー管を処理槽の頂部上方に立ち上がらせれ
ば、濃縮部の内圧が高くても、濃縮室にヘッダー管の水
頭に見合った背圧をろ液室から加えれば、濃縮圧力が低
くなり、スクリーンからの凝集汚泥の目抜けが防止され
ると共に、圧入ポンプの圧入圧が高くでき、脱水機への
濃縮液の供給圧も高くすることができるものである。ま
た、上記仕切壁は、その中央部を開放した凝集室側の仕
切壁と、この仕切壁と所定間隔を有し、槽内の周壁部を
開放した濃縮室側の仕切壁とすれば、撹拌された原液は
凝集室側の仕切壁で流動を制限され、濃縮室側の仕切壁
で凝集反応が行われた原液をスクリーンの前面に供給し
てスクリーン面に吸引されるフロックを押し流すことが
できるものである。なお、上記凝集室と濃縮室は、処理
槽の仕切壁の下方部または上方部のどちらに設けてもよ
いものである。The above screen is provided on the inner peripheral surface of the processing tank,
A scraper is rotatably slidably brought into contact with the screen to eliminate clogging, and a filtrate chamber is formed on the back surface of the screen. This screen
The rear end of the screen in the water flow direction may be extended toward the center of the tank to form a filtrate chamber on the back surface thereof, and the outer peripheral portion and the side surface portion of the scraper may be brought into sliding contact with the screen. . By doing so, the filtration area of the screen can be increased, and the amount of concentrated water of the stock solution and the concentration of the stock solution can be increased. And, the filtrate chamber on the back side of the screen is hermetically sealed, and if the header pipe for filtrate withdrawal connected to this filtrate chamber is raised above the top of the processing tank, even if the internal pressure of the concentrating part is high, If a back pressure suitable for the head of the header pipe is applied to the concentrating chamber from the filtrate chamber, the concentrating pressure will be reduced, preventing clogging of coagulated sludge from the screen and increasing the press-fitting pressure of the press-fitting pump. The supply pressure of the concentrated liquid to the machine can also be increased. Further, the partition wall, the partition wall on the side of the aggregation chamber with the central part open, and the partition wall at a predetermined interval with this partition wall, if the partition wall on the concentration chamber side with the peripheral wall in the tank open, agitation The flow of the concentrated stock solution is restricted by the partition wall on the agglomeration chamber side, and the stock solution that has undergone the agglutination reaction on the partition wall on the concentration chamber side can be supplied to the front surface of the screen to push away the flocs sucked to the screen surface. It is a thing. The aggregating chamber and the concentrating chamber may be provided either below or above the partition wall of the processing tank.
【０００６】[0006]
【発明の実施の形態】この発明に係る凝集濃縮装置は上
記のように構成してあり、処理槽に圧入ポンプで圧入さ
れた原液は、凝集剤と撹拌羽根で撹拌混合され、区画さ
れた凝集室で凝集反応をおこないながら循環流動する。
フロックを形成した原液は、仕切壁の流路から濃縮室に
流入する。そして、濃縮室に流入した原液は、スクリー
ンでろ液が分離されて濃縮され、その原液は濃縮室の内
圧で直接脱水機の供給口に圧入移送される。一方、スク
リーンでろ過されたろ液は、ろ液室に流入し、ヘッダー
管から排出される。また、ヘッダー管による背圧がろ液
室から濃縮室に加えられ、スクリーンの前後の圧力差が
少なくなり濃縮圧力が低くなり、スクリーンの目詰りが
減少されるものである。したがって、処理槽への原液の
高圧圧入が可能となり、脱水機への圧入圧も高くできる
ものである。また、スクリーンに付着したフロックは、
スクレーパを摺接させて取除かれるものである。BEST MODE FOR CARRYING OUT THE INVENTION The flocculating and concentrating apparatus according to the present invention is configured as described above, and the stock solution press-fitted into the processing tank by the press-fitting pump is agitated and mixed with the aggregating agent by the agitating blades to partition the agglomerated flocs It circulates and flows while performing an agglutination reaction in the chamber.
The stock solution having formed the flocs flows into the concentrating chamber from the flow path of the partition wall. Then, the stock solution that has flowed into the concentrating chamber is concentrated by separating the filtrate with a screen, and the stock solution is directly pressed into the supply port of the dehydrator by the internal pressure of the concentrating chamber. On the other hand, the filtrate filtered by the screen flows into the filtrate chamber and is discharged from the header pipe. Further, the back pressure by the header pipe is applied from the filtrate chamber to the concentrating chamber, the pressure difference before and after the screen is reduced, the concentrating pressure is reduced, and the clogging of the screen is reduced. Therefore, high-pressure pressurization of the stock solution into the processing tank is possible, and pressurization pressure into the dehydrator can be increased. Also, the flock attached to the screen is
It is to be removed by sliding the scraper.
【０００７】[0007]
【実施例】この発明を実施例に基づき詳述すると、ま
ず、図１において、符号１は処理槽であって円筒状の密
閉槽としてある。処理槽１の槽底部には原液の供給管２
が連結され、圧入ポンプ３で原液を圧入するようにして
ある。実施例では、高分子凝集剤等の薬剤は供給管２に
供給するようにしてあるが、直接処理槽１に供給しても
よいものである。符号４は処理槽１の天壁部の近傍に設
けた濃縮液の取出管であって、この取出管４がスクリュ
ープレス、遠心脱水機等圧入型の脱水機５の給泥口に直
接接続してあり、原液の圧入ポンプ３の圧入圧で、処理
槽で凝集濃縮した原液を脱水機５に圧送するようにして
ある。次に、処理槽１について、図２に基づき詳述する
と、符号６は処理槽１の天壁の上部に支架した駆動モー
ターであって、この実施例では、駆動モーター６の回転
主軸７が処理槽１の中心部に垂下され、回転主軸７の下
端に２枚の撹拌羽根８が止着してある。この撹拌羽根８
に対向させて処理槽１の下方部の槽壁に板状の邪魔板９
が突設してあり、撹拌羽根８を回転させて処理槽１に供
給した原液と凝集剤を撹拌混合するようにしてある。処
理槽１の上方部の周壁にパンチングメタルまたはウエッ
ジワイヤーからなるスクリーン１０が張設してあり、こ
のスクリーン１０に対向させて、駆動モーター６の回転
主軸７に止着したスクレーパ１１が設けてあり、図３に
示すように、スクレーパ１１のゴム等の可撓性の先端部
１１ａがスクリーン１０に摺接するようにしてある。図
２においては、撹拌羽根８とスクレーパ１１は駆動モー
タ６の回転主軸７に止着して撹拌羽根８とスクレーパ１
１は同速回転としてあるが、図４に示すように、撹拌羽
根８の駆動モータ６ａとスクレーパ１１の駆動モータ６
ｂを別個に設け、撹拌羽根８とスクレーパ１１の回転速
度を異ならせてもよいものである。なお、符号７ａ．７
ｂは駆動モータ６ａ．６ｂのそれぞれの回転主軸であ
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail based on embodiments. First, in FIG. 1, reference numeral 1 is a processing tank, which is a cylindrical closed tank. A stock solution supply pipe 2 at the bottom of the processing tank 1.
Are connected, and the stock solution is press-fitted by the press-fitting pump 3. In the embodiment, the chemical such as the polymer flocculant is supplied to the supply pipe 2, but it may be supplied directly to the processing tank 1. Reference numeral 4 is a concentrated liquid extraction pipe provided near the top wall of the treatment tank 1. The extraction pipe 4 is directly connected to a mud inlet of a screw press, centrifugal dehydrator or other press-fitting type dehydrator 5. The stock solution coagulated and concentrated in the processing tank is pressure-fed to the dehydrator 5 by the press-fitting pressure of the stock solution press-fitting pump 3. Next, the processing tank 1 will be described in detail with reference to FIG. 2. Reference numeral 6 is a drive motor supported on the upper portion of the ceiling wall of the processing tank 1. In this embodiment, the rotating main shaft 7 of the drive motor 6 is used for processing. Two stirring blades 8 are suspended from the center of the tank 1 and fixed to the lower end of the rotary spindle 7. This stirring blade 8
A plate-shaped baffle plate 9 on the lower part of the processing tank 1 facing the
And the stirring blade 8 is rotated to stir and mix the stock solution supplied to the processing tank 1 and the aggregating agent. A screen 10 made of punching metal or wedge wire is stretched on the peripheral wall of the upper part of the processing tank 1, and a scraper 11 fixed to a rotating main shaft 7 of a drive motor 6 is provided facing the screen 10. As shown in FIG. 3, a flexible tip portion 11a such as rubber of the scraper 11 is in sliding contact with the screen 10. In FIG. 2, the stirring blade 8 and the scraper 11 are fixed to the rotating main shaft 7 of the drive motor 6 so that the stirring blade 8 and the scraper 1
1 is rotating at the same speed, but as shown in FIG. 4, the drive motor 6a for the stirring blade 8 and the drive motor 6 for the scraper 11 are used.
b may be separately provided, and the rotation speeds of the stirring blade 8 and the scraper 11 may be different. Note that reference numeral 7a. 7
b is a drive motor 6a. 6b are the respective rotation main shafts.
【０００８】処理槽１の中間部には、中央部に通口を有
する仕切壁１２が処理槽１の周壁に止着してあり、この
仕切壁１２で撹拌羽根８を設けた凝集室１３と、スクリ
ーン１０を張設した濃縮室１４とに仕切られており、仕
切壁１２で原液の循環流動を制限しながら凝集反応が行
われるようにしてある。そして、凝集反応が行われた原
液は仕切壁１２の中央部の開口を通過して濃縮室１４に
流入し、原液の一部がスクリーン１０でろ過されて濃縮
されるようになっている。また、仕切壁１２は、中央部
に通口を有する凝集室１３側の仕切壁１２ａと、一定の
間隔を開けて並設し、濃縮室１４のスクレーパ１１の下
端部に支持させて周辺部を開口した仕切壁１２ｂとで流
路を構成し、仕切壁１２ａの中央部に流入させた原液を
仕切壁１２ｂの周辺部の開口からスクリーン１０の前面
の濃縮室１４に流入させてもよく、この仕切壁１２ａ．
１２ｂの流路で凝集作用の補完と、スクリーン１０の前
面に流入する原液が、ろ過によりスクリーン１０に付着
するフロックを押し流しろ過面を常時再生が可能とな
り、スクレーパ１１によるフロックのスクリーン１０の
網目への押し込みと、フロックの破砕を防止できるもの
である。なお、処理槽１は密閉槽であるので、仕切壁１
２で区画された凝集室１３と濃縮室１４は、図５に示す
ように、凝集室１３を処理槽１の上方に、濃縮室１４を
処理槽１の下方に設けてもよいものである。A partition wall 12 having a through hole in the center is fixed to the peripheral wall of the processing tank 1 at the middle portion of the processing tank 1, and the partition wall 12 and the aggregating chamber 13 provided with a stirring blade 8 are provided. It is partitioned into a concentrating chamber 14 in which a screen 10 is stretched, and a partition wall 12 is configured to carry out an agglutination reaction while limiting the circulation flow of the stock solution. Then, the stock solution that has undergone the agglutination reaction passes through the opening at the center of the partition wall 12 and flows into the concentrating chamber 14, where a part of the stock solution is filtered by the screen 10 and concentrated. Further, the partition wall 12 is provided in parallel with the partition wall 12a on the side of the aggregation chamber 13 having a through hole in the central portion at a constant interval, and is supported by the lower end portion of the scraper 11 of the concentrating chamber 14 to support the peripheral portion. A flow path may be configured with the partition wall 12b that is opened, and the stock solution that has flowed into the central portion of the partition wall 12a may flow into the concentration chamber 14 on the front surface of the screen 10 through the opening in the peripheral portion of the partition wall 12b. Partition wall 12a.
In the flow channel 12b, the coagulation action is complemented, and the stock solution flowing into the front surface of the screen 10 allows the flocs adhering to the screen 10 to be washed away by filtration, and the filtration surface can be constantly regenerated. It is possible to prevent the flock from being pushed in and the flock being crushed. Since the processing tank 1 is a closed tank, the partition wall 1
The aggregating chamber 13 and the concentrating chamber 14 divided by 2 may be provided with the aggregating chamber 13 above the processing tank 1 and the concentrating chamber 14 below the processing tank 1, as shown in FIG.
【０００９】処理槽１に配設したスクリーン１０の裏面
側には、図２及び図３に示すように、密閉状のろ液室１
５が設けてあり、凝集された原液の一部をろ過するよう
にしてある。このろ液室１５は、図６に示すように、ス
クリーン１０の水流方向後方の端部を、槽内の中心方向
に延設してろ液室１５を形成すれば、濃縮室１４から抜
き出すろ液量が多くなり、したがって、原液の濃縮度も
高めることができるものである。そして、スクレーパ１
１の外周部と先端側面部をスクリーン１０に摺接させて
おけば、スクリーン１０面に吸着されたフロックを取り
除くことができ、スクリーン１０を清掃することができ
る。As shown in FIGS. 2 and 3, a closed filtrate chamber 1 is provided on the back side of the screen 10 disposed in the processing tank 1.
5 is provided so that a part of the concentrated stock solution is filtered. As shown in FIG. 6, the filtrate chamber 15 is formed by extending the rear end of the screen 10 in the water flow direction toward the center of the tank to form the filtrate chamber 15. Since the amount is large, the concentration of the stock solution can be increased. And scraper 1
If the outer peripheral portion and the side surface of the tip end are slidably contacted with the screen 10, the flocs adsorbed on the surface of the screen 10 can be removed and the screen 10 can be cleaned.
【００１０】ろ液室１５のろ液管１６には、図１に示す
ように、ろ液抜出用のヘッダー管１７がＵ字状の可撓管
１８を介して連結してあり、その上端部を処理槽１の頂
部上方に立ち上がらせて、その頂部よりろ液を抜き出す
ようにしてある。そして、ろ液のヘッド圧により濃縮室
１４にろ液室１５から背圧がかかるようにしてあり、ヘ
ッダー管１７の高さを調節することにより、濃縮室１４
への背圧調整ができるようにしてある。したがって、濃
縮室１４にろ液室１５から背圧をかけることにより、ス
クリーン１０の前後面の圧力差が少なくなり、即ち、濃
縮室１４の内圧が高くても濃縮圧力が低くなり、スクリ
ーン１０の目詰まりが防止され、スクリーン１０の開孔
と、開口率を維持することができると同時に、処理槽１
への原液の高圧圧入が可能となり、ろ過機への圧入圧も
高くできるものである。As shown in FIG. 1, the filtrate pipe 16 of the filtrate chamber 15 is connected with a header pipe 17 for extracting the filtrate through a U-shaped flexible pipe 18 and its upper end. The part is raised above the top of the processing tank 1, and the filtrate is extracted from the top. A back pressure is applied from the filtrate chamber 15 to the concentration chamber 14 by the head pressure of the filtrate, and the height of the header pipe 17 is adjusted to adjust the concentration chamber 14
The back pressure can be adjusted. Therefore, by applying a back pressure to the concentrating chamber 14 from the filtrate chamber 15, the pressure difference between the front and rear surfaces of the screen 10 is reduced, that is, the concentrating pressure is reduced even if the inner pressure of the concentrating chamber 14 is high, and The clogging is prevented, the opening of the screen 10 and the opening ratio can be maintained, and at the same time, the processing tank 1
High-pressure pressurization of the stock solution into the filter is possible, and the pressurization pressure into the filter can be increased.
【００１１】この発明の実施例にあっては濃縮室１４に
背圧がかかるので、スクリーン１０は、口径がφ０．５
〜φ２．０ｍｍの適用が考えられ、開口率５０％が可能
となるものである。また、ヘッダー管１７の高さは通常
０．２〜２ｍ（背圧０．０２〜０．２ｋｇ／ｃｍ2）が
可能であり、圧入ポンプ３による原液の圧入圧が高くて
も濃縮室１４の濃縮圧が背圧により低く維持されるの
で、圧入ポンプ３の圧入圧を０．０５〜０．５ｋｇ／ｃ
ｍ2とすれば、濃縮圧力は０．０３〜０．３ｋｇ／ｃｍ2
が可能である。そして、ヘッダー管１７の高さを調節す
れば、濃縮室１４の濃縮圧を調整することができる。そ
して、濃縮室１４の内圧がそのまま、脱水機５への濃縮
液の供給圧として利用できるものである。なお、ヘッダ
ー管１７の上端部はヘッダータンク１９の下端に連結し
てある。符号２０はヘッダータンク１９に設けたオーバ
ーフロー管、符号２１はヘッダータンク１９の頂部に設
けた空気抜き管、符号２２はヘッダー管１７の前段に連
結したスクリーン１０の洗浄水管である。In the embodiment of the present invention, since the back pressure is applied to the concentrating chamber 14, the screen 10 has a diameter of 0.5 mm.
The application of ˜φ2.0 mm is considered, and the aperture ratio of 50% is possible. Further, the height of the header pipe 17 can be normally 0.2 to 2 m (back pressure 0.02 to 0.2 kg / cm 2 ), and even if the press-fitting pressure of the stock solution by the press-fitting pump 3 is high, Since the condensing pressure is kept low by the back pressure, the press-fitting pressure of the press-fitting pump 3 is 0.05 to 0.5 kg / c.
if m 2, concentrated pressure 0.03~0.3kg / cm 2
Is possible. Then, by adjusting the height of the header pipe 17, the concentration pressure of the concentration chamber 14 can be adjusted. The internal pressure of the concentrating chamber 14 can be used as it is as the supply pressure of the concentrated liquid to the dehydrator 5. The upper end of the header pipe 17 is connected to the lower end of the header tank 19. Reference numeral 20 is an overflow pipe provided in the header tank 19, reference numeral 21 is an air vent pipe provided at the top of the header tank 19, and reference numeral 22 is a washing water pipe for the screen 10 connected to the preceding stage of the header pipe 17.
【００１２】[0012]
【発明の効果】この発明は、上記のように構成してあ
り、原液を処理槽に圧入すれば、凝集剤と撹拌混合され
た原液は、充分にフロックが形成され、原液がろ過され
て濃縮室の内圧で濃縮液を脱水機に直接供給することが
できる。即ち、従来の装置にあっては、凝集剤が原液と
反応して汚泥がフロックを形成するまえに、凝集剤の一
部が濃縮部のスクリーンからろ液とともに流失する恐れ
があったものであるが、この発明にあっては、処理槽に
流路を形成した仕切壁を設け、凝集室と濃縮室に分離し
たので、仕切壁により流動が制限されて、充分にフロッ
クを形成した原液を濃縮室へ移送することができるもの
である。そして、従来装置にあっては、処理槽が開放型
のため、ろ過機に濃縮液を供給するためには、濃縮液の
貯溜タンクと給泥ポンプが必要であったものであるが、
この発明にあっては、処理槽を密閉槽としたので、処理
槽への圧入ポンプの原液の圧入圧が直接ろ過機への濃縮
液の給泥圧となり、貯溜タンクと給泥ポンプを省略でき
るものである。しかも、密閉状のろ液室に処理槽の頂部
上方に立ち上がらせたヘッダー管を設けたので、濃縮室
にろ液室から背圧が加えられ、濃縮圧が低くなりスクリ
ーンの目詰まりとフロックのスクリーンからの目抜けも
軽減できるものでスクリーンの開孔と、開口率を大きく
維持することができるものである。そして、圧入ポンプ
の圧入圧に比例して、濃縮室の内圧が高く維持できるの
で、脱水機への高い給泥圧を可能とするものである。EFFECTS OF THE INVENTION The present invention is configured as described above, and when the stock solution is pressed into the processing tank, the stock solution stirred and mixed with the flocculant sufficiently forms flocs, and the stock solution is filtered and concentrated. The concentrated liquid can be directly supplied to the dehydrator by the internal pressure of the chamber. That is, in the conventional apparatus, there is a risk that a part of the coagulant may be washed away from the screen of the concentrating section together with the filtrate before the coagulant reacts with the stock solution and the sludge forms flocs. However, in this invention, since the partition wall having the flow path is provided in the processing tank and the separation chamber is separated into the aggregating chamber and the concentrating chamber, the flow is restricted by the partition wall, and the stock solution with sufficient flocs is concentrated. It can be transferred to a room. And in the conventional device, since the treatment tank is an open type, in order to supply the concentrated liquid to the filter, a storage tank for the concentrated liquid and a mud supply pump were required.
In the present invention, since the treatment tank is a closed tank, the pressure of the stock solution of the press injection pump into the treatment tank directly becomes the feed pressure of the concentrated liquid to the filter, and the storage tank and the feed pump can be omitted. It is a thing. In addition, since the header tube that stood up above the top of the processing tank was provided in the closed filtrate chamber, back pressure was applied from the filtrate chamber to the concentration chamber, and the concentration pressure decreased, causing screen clogging and flocking. It is possible to reduce the blind spots from the screen, and it is possible to maintain a large aperture and a large aperture ratio in the screen. Since the internal pressure of the concentrating chamber can be maintained high in proportion to the press-fitting pressure of the press-fitting pump, a high mud supply pressure to the dehydrator is possible.
【図１】この発明に係る凝集濃縮装置のフローチャート
である。FIG. 1 is a flow chart of a coagulating and concentrating device according to the present invention.
【図２】この発明に係る凝集濃縮装置の要部処理槽の縦
断側面図である。FIG. 2 is a vertical cross-sectional side view of a main part processing tank of the coagulating and concentrating device according to the present invention.
【図３】この発明に係る処理槽の図２のＡ−Ａ線に沿っ
て切断した横断面図である。FIG. 3 is a transverse cross-sectional view of the processing tank according to the present invention taken along the line AA in FIG.
【図４】 この発明に係る処理槽の他の実施例を示す縦
断側面図である。FIG. 4 is a vertical sectional side view showing another embodiment of the processing tank according to the present invention.
【図５】 この発明に係る処理槽の他の実施例を示す縦
断側面図である。FIG. 5 is a vertical sectional side view showing another embodiment of the processing tank according to the present invention.
【図６】 この発明に係る処理槽の他の実施例を示す縦
断側面図である。FIG. 6 is a vertical sectional side view showing another embodiment of the processing tank according to the present invention.
１ 処理槽 ２ 供給管 ３ 圧入ポンプ ４ 取出管 ５ 脱水機 ８ 撹拌羽根 １０ スクリーン １１ スクレーパ １２．１２ａ．１２ｂ 仕切壁 １３ 凝集室 １４ 濃縮室 １５ ろ液室 １７ ヘッダー管 1 processing tank 2 supply pipes 3 Press fit pump 4 Extraction pipe 5 dehydrator 8 stirring blades 10 screens 11 scrapers 12.12a. 12b partition wall 13 aggregation chamber 14 Concentration room 15 filtrate chamber 17 header tube
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭57−132541（ＪＰ，Ａ) 特開2000−5505（ＪＰ，Ａ) 特開 平６−315700（ＪＰ，Ａ) 特開 平８−224407（ＪＰ，Ａ) 特開 平８−910（ＪＰ，Ａ) 実開 昭55−126917（ＪＰ，Ｕ) 実開 平５−22031（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B01D 21/00 - 21/34 C02F 1/52 - 1/56 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP 57-132541 (JP, A) JP 2000-5505 (JP, A) JP 6-315700 (JP, A) JP 8-224407 (JP, A) JP-A-8-910 (JP, A) Actually developed 55-126917 (JP, U) Actually developed 5-22031 (JP, U) (58) Fields investigated (Int.Cl. 7) , DB name) B01D 21/00-21/34 C02F 1/52-1/56
Claims (8)
凝集剤を混合させる撹拌羽根８と、槽内の濃縮液の取出
側に回転自在なスクレーパ１１を設け、このスクレーパ
１１の周部に、原液をろ過して取り出すスクリーン１０
を設けた装置において、上記処理槽１を密閉槽とし、こ
の処理槽１を流路を設けた仕切壁１２で、原液と凝集剤
を混合させる凝集室１３と、原液の一部をろ過する濃縮
室１４とに区画したことを特徴とする凝集濃縮装置。1. A stirring blade 8 for mixing a stock solution and a coagulant on the inflow side of the stock solution, and a rotatable scraper 11 on the take-out side of the concentrated solution in the tank are provided in the processing tank 1. Screen 10 around the periphery where the undiluted solution is filtered out
In the apparatus provided with, the treatment tank 1 is a closed tank, the treatment tank 1 is a partition wall 12 provided with a flow path, and a flocculation chamber 13 for mixing the stock solution and the flocculant, and a concentration for filtering a part of the stock solution An aggregating and concentrating device characterized by being divided into a chamber 14 and a chamber 14.
ンプ３を連結すると共に、処理槽１の濃縮液の取出管４
を脱水機５の給泥口に接続したことを特徴とする請求項
1記載の凝集濃縮装置。2. A pressurizing pump 3 is connected to a stock solution supply pipe 2 of the processing tank 1, and a concentrated liquid take-out tube 4 of the processing tank 1 is connected.
Is connected to the mud supply port of the dehydrator 5.
The aggregation and concentration device described in 1.
に設け、このスクリーン１０にスクレーパ１１を回転自
在に摺接させると共に、スクリーン１０の背面にろ液室
１５を形成したことを特徴とする請求項1又は２に記載
の凝集濃縮装置。3. The screen 10 is provided on the inner peripheral surface of the processing tank 1, a scraper 11 is rotatably slidably contacted with the screen 10, and a filtrate chamber 15 is formed on the back surface of the screen 10. The coagulating and concentrating device according to claim 1 or 2 .
部を、槽内の中心方向に延設してその背面にろ液室１５
を形成すると共に、スクレーパ１１の外周部と側面部を
スクリーン１０に摺接させたことを特徴とする請求項３
記載の凝集濃縮装置。4. An end portion of the screen 10 on the rear side in the water flow direction is extended toward the center of the tank, and a filtrate chamber 15 is provided on the rear surface thereof.
4. The outer peripheral portion and the side surface portion of the scraper 11 are slidably contacted with the screen 10 while forming the
The aggregation and concentration device described.
を密閉状とし、このろ液室１５に接続したろ液抜出用の
ヘッダー管１７を処理槽１の頂部上方に立ち上がらせた
ことを特徴とする請求項３又は４記載の凝集濃縮装置。5. A filtrate chamber 15 on the back surface of the screen 10.
5. The flocculating and concentrating apparatus according to claim 3 or 4, wherein the header is closed and the header pipe 17 for draining the filtrate connected to the filtrate chamber 15 is raised above the top of the processing tank 1.
た凝集室１３側の仕切壁１２ａと、この仕切壁１２ａと
所定間隔を有し、槽内の周壁部を開放した濃縮室１４側
の仕切壁１２ｂとからなることを特徴とする請求項1乃
至５の何れか１項に記載の凝集濃縮装置。6. The partition wall 12 has a partition wall 12a on the side of the agglomeration chamber 13 whose central portion is open, and a partition wall 12a having a predetermined distance from the partition wall 12a and having a peripheral wall portion inside the tank open. aggregation concentrator according to any one of claims 1 to 5, characterized in that it consists of a partition wall 12b.
た仕切壁１２の下方部に設け、濃縮室１４を仕切壁１２
の上方部に設けたことを特徴とする請求項1乃至６の何
れか１項に記載の凝集濃縮装置。7. The aggregation chamber 13 is provided below the partition wall 12 provided inside the processing tank 1, and the concentration chamber 14 is provided as the partition wall 12.
7. What is claimed in any one of claims 1 to 6 , characterized in that it is provided in the upper part of the
The aggregation and concentration device according to item 1 .
た仕切壁１２の上方部に設け、濃縮室１４を仕切壁１２
の下方部に設けたことを特徴とする請求項1乃至６の何
れか１項に記載の凝集濃縮装置。8. The agglomeration chamber 13 is provided above the partition wall 12 provided inside the treatment tank 1, and the concentration chamber 14 is provided with the partition wall 12.
What is claimed in any one of claims 1 to 6 , wherein the lower part of the
The aggregation and concentration device according to item 1 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31159398A JP3503681B2 (en) | 1998-11-02 | 1998-11-02 | Coagulation and concentration equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31159398A JP3503681B2 (en) | 1998-11-02 | 1998-11-02 | Coagulation and concentration equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000135406A JP2000135406A (en) | 2000-05-16 |
| JP3503681B2 true JP3503681B2 (en) | 2004-03-08 |
Family
ID=18019117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31159398A Expired - Lifetime JP3503681B2 (en) | 1998-11-02 | 1998-11-02 | Coagulation and concentration equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3503681B2 (en) |
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|---|---|---|---|---|
| CN111675402A (en) * | 2020-06-22 | 2020-09-18 | 经家旺 | Non-woven fabrics processing water cyclic utilization device |
| CN111675402B (en) * | 2020-06-22 | 2021-05-28 | 济南大自然新材料有限公司 | Non-woven fabrics processing water cyclic utilization device |
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| Publication number | Publication date |
|---|---|
| JP2000135406A (en) | 2000-05-16 |
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