JP3338392B2 - Liquid coagulant injection stirrer - Google Patents
Liquid coagulant injection stirrerInfo
- Publication number
- JP3338392B2 JP3338392B2 JP34645998A JP34645998A JP3338392B2 JP 3338392 B2 JP3338392 B2 JP 3338392B2 JP 34645998 A JP34645998 A JP 34645998A JP 34645998 A JP34645998 A JP 34645998A JP 3338392 B2 JP3338392 B2 JP 3338392B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- water absorption
- stirring
- absorption pump
- pump
- 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 - Fee Related
Links
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Description
【０００１】[0001]
【発明が属する技術分野】本発明は、土壌などを含んだ
濁水の凝集処理に使用される凝集剤を注入して攪拌する
装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for injecting and stirring a coagulant used for coagulating turbid water containing soil and the like.
【０００２】[0002]
【従来の技術】近年、下水道配管工事や河川改修工事に
よって排出される濁水の処理が問題となっている。特に
沖縄県では赤土等流出防止条例が公布されるなど、水の
濁りなどに対する規制がますます厳しくなっているのが
現状である。2. Description of the Related Art In recent years, treatment of muddy water discharged by sewer piping work and river improvement work has become a problem. Especially in Okinawa Prefecture, regulations on water turbidity and the like are becoming increasingly strict, with the regulations prohibiting runoff of red soil etc. being promulgated.
【０００３】この水の濁りや色の原因である微細な懸濁
物質は主としてコロイド粒子であるが、コロイド粒子は
水中での沈降速度が非常に遅いという問題があるため
に、凝集剤を添加し攪拌することにより微細な懸濁物質
を凝集して水との分離を早める方法が採られている。[0003] The fine suspended substance which causes turbidity and color of water is mainly colloidal particles. However, colloidal particles have a problem that the sedimentation speed in water is very slow. A method has been adopted in which a fine suspended substance is aggregated by stirring to accelerate the separation from water.
【０００４】ところで、濁水の処理工程として図１０に
示すように、濁水貯水池ａから水中ポンプｂによって凝
集剤注入攪拌装置ｃに濁水ｄが吸収され、同凝集剤注入
攪拌装置ｃによって凝集剤を添加しながら攪拌して沈殿
槽ｅに送水されて、沈殿槽ｅにて汚濁を凝集沈殿させて
清水を放流するものである。As a turbid water treatment step, as shown in FIG. 10, turbid water d is absorbed from a turbid water reservoir a by a submersible pump b into a flocculant injection and stirring device c, and the flocculant is added by the flocculant injection and stirring device c. The water is fed to the sedimentation tank e while stirring, and the contaminants are coagulated and settled in the sedimentation tank e to discharge fresh water.
【０００５】[0005]
【発明が解決しようとする課題】そこで上記凝集剤注入
攪拌装置ｃは、短時間で凝集剤を濁水に攪拌して沈殿槽
ｅに送水する処理能力が要求されることとなる。しかし
攪拌装置の殆どは攪拌羽根によって攪拌させる機構のも
のが多く、そのために凝集剤の攪拌密度を高めようとす
れば攪拌時間が長くなり、沈殿槽ｅへの送水処理能力が
低下する問題がある。Therefore, the coagulant injection / stirring apparatus c is required to have a processing capability of stirring the coagulant into turbid water in a short time and sending the water to the sedimentation tank e. However, most of the stirring devices have a mechanism of stirring by a stirring blade, and therefore, if an attempt is made to increase the stirring density of the flocculant, the stirring time becomes longer, and there is a problem that the ability to process water to the settling tank e is reduced. .
【０００６】攪拌羽根による攪拌では、羽根周囲の攪拌
が十分に行えず、又流速が常に一定であるために攪拌の
効率が悪い問題がある。更に凝集した懸濁物を羽根によ
って破壊することによって微細状となり、沈殿槽での沈
殿処理能力が低下するという問題がある。[0006] In the stirring by the stirring blade, there is a problem that the stirring around the blade cannot be sufficiently performed and the efficiency of the stirring is poor because the flow velocity is always constant. Further, there is a problem that the aggregated suspension is broken down by the blades to form fine particles, and the sedimentation treatment capacity in the sedimentation tank is reduced.
【０００７】そこで本発明では上記諸問題点を解消する
ために、各種の流速の変化によって攪拌しながら沈殿槽
へ送水する攪拌装置を提供することを目的とするもので
ある。Accordingly, an object of the present invention is to provide a stirrer for feeding water to a sedimentation tank while stirring by changing various flow rates in order to solve the above problems.
【０００８】[0008]
【課題を解決するための手段】本発明の上記目的は次の
如き構成の攪拌装置によって達成できる。即ちその要旨
は被処理液を吸引・攪拌する一次吸水ポンプと、該一次
吸水ポンプと連通して再び吸引・攪拌する二次吸水ポン
プと、該二次吸水ポンプに連通して、種々の流速・水流
を生起させて攪拌させる流速変動負荷発生筒部とから構
成され、かつ少なくとも上記一次吸水ポンプ、二次吸水
ポンプ又は流速変動負荷発生筒部入口側に凝集剤注入弁
を設けたことを特徴とする液状凝集剤注入攪拌装置であ
る。更に上記一次吸水ポンプおよび二次吸水ポンプに吸
引・攪拌された被処理液を再び循環させて吸引・攪拌さ
せる手段を設けることによってより一層の攪拌機能を備
えるものである。The above object of the present invention can be achieved by a stirring device having the following structure. That is, the gist of the invention is that a primary water suction pump that sucks and agitates the liquid to be treated, a secondary water absorption pump that communicates with the primary water absorption pump and sucks and agitates again, and that communicates with the secondary water absorption pump to achieve various flow rates and A flow-fluctuation load generating cylinder for generating and agitating a water flow, and at least the primary water suction pump, the secondary water suction pump or a flocculant injection valve is provided on the inlet side of the flow fluctuation load-generating cylinder. This is a liquid coagulant injection and stirring device. Further, the primary water absorption pump and the secondary water absorption pump are provided with a means for circulating and sucking / stirring the liquid to be treated which has been sucked / stirred, thereby providing a further stirring function.
【０００９】[0009]
【作用】本発明の攪拌装置は図９に示すように、濁水A
は凝集剤注入弁７より凝集剤が注入されながら一次給吸
水ポンプ２内にて吸引・攪拌されて二次吸水ポンプ３に
送水される。この際に三方ボール弁１０によって循環管
１１と連通管９とに分水され循環管１１より再び一次吸
水ポンプ２内に送水されることになる。従って上記三方
ボール弁１０によって循環管１１へ分水される水量を調
整することによって凝集剤の攪拌密度を調整することが
可能となる。The stirrer according to the present invention is, as shown in FIG.
While the coagulant is injected from the coagulant injection valve 7, the water is sucked and agitated in the primary water supply / suction pump 2 and sent to the secondary water suction pump 3. At this time, the water is divided into the circulation pipe 11 and the communication pipe 9 by the three-way ball valve 10, and the water is again supplied from the circulation pipe 11 into the primary water suction pump 2. Therefore, the stirring density of the flocculant can be adjusted by adjusting the amount of water divided into the circulation pipe 11 by the three-way ball valve 10.
【００１０】そして二次吸水ポンプ３へ送水される凝集
剤が注入された濁水Aは、再び凝集剤注入弁７ａより凝
集剤が注入されながら二次給吸水ポンプ３内にて吸引・
攪拌されて流速変動負荷発生筒部４内に送水される。こ
の際に三方ボール弁１０ａによって循環管１１ａと連通
管９ａとに分水され循環管１１ａより再び二次吸水ポン
プ３内に送水されることになる。The turbid water A into which the coagulant is supplied to the secondary water suction pump 3 is sucked and pumped in the secondary water supply / pump 3 while the coagulant is injected again from the coagulant injection valve 7a.
The water is stirred and sent into the flow velocity fluctuation load generating cylinder 4. At this time, the water is divided into the circulation pipe 11a and the communication pipe 9a by the three-way ball valve 10a, and the water is again supplied from the circulation pipe 11a into the secondary water suction pump 3.
【００１１】次に上記流速変動負荷発生筒部４内に送水
される前に、凝集剤注入弁７ｂより凝集剤が注入されて
上記流速変動負荷発生筒部４内にて発生する種々の流速
・水流の変化により攪拌を行う。従って一次吸水ポンプ
２および二次吸水ポンプ３によって凝集された懸濁物を
微細に破壊することなく、密度の高い攪拌が可能とな
る。Next, before water is fed into the flow rate fluctuation load generating cylinder 4, the coagulant is injected from the coagulant injection valve 7 b and various flow rates generated in the flow rate fluctuation load generation cylinder 4 are generated. Stirring is performed by changing the water flow. Therefore, high-density agitation becomes possible without minutely destroying the suspension aggregated by the primary water absorption pump 2 and the secondary water absorption pump 3.
【００１２】[0012]
【発明の実施の形態】以下本発明の実施の形態を、その
実施例を示す図面を参酌しながら詳述する。図１および
図２にそれぞれ示すように、攪拌装置本体１は連通され
る一次吸水ポンプ２および二次吸水ポンプ３並びに流速
変動負荷発生筒部４とから構成されるものである。Embodiments of the present invention will be described below in detail with reference to the drawings showing the embodiments. As shown in FIG. 1 and FIG. 2, the stirring device main body 1 is composed of a primary water suction pump 2 and a secondary water suction pump 3 which are communicated with each other, and a flow rate fluctuation load generating cylinder 4.
【００１３】そこで図中５はチャッキ弁６を介して一次
吸水ポンプ２に濁水を送水する流入管であり、同流水管
５の一次吸水ポンプ２入口側に凝集剤注入弁７を設ける
ものである。従って流入管５内にて凝集剤が注入された
濁水が一次吸水ポンプ２によって吸水・攪拌されて送水
管８より連通管９を通じて二次給水ポンプ３に送水され
る。In the drawing, reference numeral 5 denotes an inflow pipe for feeding turbid water to the primary water suction pump 2 via a check valve 6, and a coagulant injection valve 7 is provided at the inlet side of the primary water absorption pump 2 of the same water pipe 5. . Accordingly, the turbid water into which the coagulant has been injected in the inflow pipe 5 is absorbed and agitated by the primary water suction pump 2, and is supplied from the water supply pipe 8 to the secondary water supply pump 3 through the communication pipe 9.
【００１４】この送水管８と連通管９との接続の際には
三方ボール弁１０によって循環管１１と連通状に接続さ
れるものであり、上記循環管１１は流入管５の凝集剤注
入弁７手前に連通され、三方ボール弁１０によって一次
吸水ポンプ２の送水管８より連通管９のみ、循環管１１
のみ、あるいは連通管９および循環管１１の双方に自在
に切り替え連通できる機構とするものである。When connecting the water supply pipe 8 and the communication pipe 9, the three-way ball valve 10 is connected in communication with the circulation pipe 11, and the circulation pipe 11 is connected to the coagulant injection valve of the inflow pipe 5. 7 and the three-way ball valve 10 connects only the communication pipe 9 from the water supply pipe 8 of the primary water suction pump 2 to the circulation pipe 11.
Only, or a mechanism capable of freely switching and communicating with both the communication pipe 9 and the circulation pipe 11.
【００１５】次に上記連通管９は二次吸水ポンプ３に連
通され、同連通管９の二次吸水ポンプ３入口側に凝集剤
注入弁７ａを設けるものである。従って一次吸水ポンプ
２より連通管９を通して送水された濁水に凝集剤が注入
されながら二次吸水ポンプ３によって吸水・攪拌されて
送水管８ａより連通管９ａを通じて流速変動負荷発生筒
部４に送水される。Next, the communication pipe 9 is connected to the secondary water suction pump 3, and a coagulant injection valve 7a is provided at the inlet side of the secondary water suction pump 3 of the communication pipe 9. Accordingly, while the coagulant is injected into the turbid water sent from the primary water suction pump 2 through the communication pipe 9, the water is absorbed and agitated by the secondary water absorption pump 3 while being fed from the water pipe 8 a to the flow rate fluctuation load generating cylinder 4 through the communication pipe 9 a. You.
【００１６】この送水管８ａと連通管９ａとの接続の際
には三方ボール弁１０ａによって循環管１１ａと連通状
に接続されるものであり、上記循環管１１ａは連通管９
の凝集剤注入弁７ａ手前に連通され、三方ボール弁１０
によって二次吸水ポンプ３の送水管８ａより連通管９ａ
のみ、循環管１１ａのみ、あるいは連通管９ａおよび循
環管１１ａの双方に自在に切り替え連通できる機構とす
るものである。When the water supply pipe 8a and the communication pipe 9a are connected, they are connected to the circulation pipe 11a by a three-way ball valve 10a, and the circulation pipe 11a is connected to the communication pipe 9a.
Of the three-way ball valve 10
From the water supply pipe 8a of the secondary water suction pump 3 to the communication pipe 9a
Only, only the circulation pipe 11a, or a mechanism capable of freely switching and communicating with both the communication pipe 9a and the circulation pipe 11a.
【００１７】そして上記流速変動負荷発生筒部４内に
は、流速および水流に変動負荷を生起させる種々の負圧
発生部１２、１２、・・を内包するものである。The flow velocity fluctuation load generating cylinder 4 contains various negative pressure generating parts 12, 12,... Which generate a fluctuation load on the flow velocity and the water flow.
【００１８】上記負圧発生部１２は例えば図３〜図８に
示すように、ねじれ平円板、ねじれ板、湾曲形状板、テ
ーパー管およびキャップ管を流速変動負荷発生筒部４内
に内包することにより、流速および水流がさまざまに変
化して攪拌を生起させる。又図８に示すパイプ切り込み
は、連通管９ａに設けるものとする。As shown in FIGS. 3 to 8, for example, the negative pressure generating unit 12 includes a twisted flat disk, a twisted plate, a curved plate, a tapered pipe, and a cap pipe in the flow rate fluctuation load generating cylinder 4. Thereby, the flow velocity and the water flow change variously to cause agitation. Further, the pipe cut shown in FIG. 8 is provided in the communication pipe 9a.
【００１９】又上記連通管９ａの流速変動負荷発生筒部
４入口側に凝集剤注入弁７ｂを設けるものである。図中
１３は一次吸水ポンプ２および二次吸水ポンプ３に吸水
管１４を通して給水する給水タンクである。この給水タ
ンク１３によって一次吸水ポンプ２および二次吸水ポン
プ３の起動の際に必要な水を補給するものであり、起動
後には給水は不要となる。A coagulant injection valve 7b is provided on the communication pipe 9a at the inlet side of the flow rate fluctuation load generating cylinder 4. In the figure, reference numeral 13 denotes a water supply tank for supplying water to the primary water absorption pump 2 and the secondary water absorption pump 3 through the water absorption pipe 14. The water supply tank 13 replenishes water necessary for starting the primary water suction pump 2 and the secondary water suction pump 3, and water supply is not required after the start.
【００２０】[0020]
【発明の効果】以上述べて来た如く本発明によれば、３
段階による凝集剤の注入により濁水に含まれる不純物と
凝集剤との反応を十分に行えることができ、しかも攪拌
羽根などによる機械的攪拌ではなく、流速および水流を
さまざまに変化させて攪拌を行うために懸濁物の細分化
を防止することができ、沈降槽での処理能力の低下を防
ぐ効果を奏するものである。As described above, according to the present invention, 3
Injection of the flocculant at each stage enables the reaction between the impurities contained in the turbid water and the flocculant to be sufficiently performed.In addition, instead of mechanical stirring using a stirring blade or the like, stirring is performed by changing the flow rate and water flow in various ways. In addition, it is possible to prevent the fragmentation of the suspension, and to exert an effect of preventing a decrease in the treatment capacity in the sedimentation tank.
【図１】本発明の一実施例を示す側面説明図である。FIG. 1 is an explanatory side view showing one embodiment of the present invention.
【図２】本発明の一実施例を示す平面説明図である。FIG. 2 is an explanatory plan view showing an embodiment of the present invention.
【図３】本発明のねじれ平円板状の負圧発生部を示す説
明図である。FIG. 3 is an explanatory view showing a torsional flat disk-shaped negative pressure generating portion of the present invention.
【図４】本発明のねじれ板状の負圧発生部を示す説明図
である。FIG. 4 is an explanatory view showing a twisted plate-shaped negative pressure generating section of the present invention.
【図５】本発明の湾曲板状の負圧発生部を示す説明図で
ある。FIG. 5 is an explanatory view showing a curved plate-shaped negative pressure generating section of the present invention.
【図６】本発明のテーパ管状の負圧発生部を示す説明図
である。FIG. 6 is an explanatory view showing a tapered tubular negative pressure generating portion of the present invention.
【図７】本発明のキャップ管状の負圧発生部を示す説明
図である。FIG. 7 is an explanatory view showing a negative pressure generating section of a tubular cap according to the present invention.
【図８】本発明のパイプ切り込み状の負圧発生部を示す
説明図である。FIG. 8 is an explanatory view showing a pipe cut-shaped negative pressure generating section of the present invention.
【図９】本発明の作用説明図である。FIG. 9 is a diagram illustrating the operation of the present invention.
【図１０】従来の濁水処理機構の概要説明図である。FIG. 10 is a schematic explanatory view of a conventional turbid water treatment mechanism.
１ 攪拌装置本体 ２ 一次吸水ポンプ ３ 二次吸水ポンプ ４ 流速変動負荷発生筒部 ５ 流入管 ７、７ａ、７ｂ 凝集剤注入弁 ８、８ａ 送水管 ９、９ａ 連通管 １０、１０ａ 三方ボール弁 １１、１１ａ 循環管 １２ 負圧発生部 １３ 給水タンク DESCRIPTION OF SYMBOLS 1 Stirring apparatus main body 2 Primary water absorption pump 3 Secondary water absorption pump 4 Flow velocity fluctuation load generating cylinder part 5 Inflow pipe 7, 7a, 7b Coagulant injection valve 8, 8a Water supply pipe 9, 9a Communication pipe 10, 10a Three-way ball valve 11, 11a Circulation pipe 12 Negative pressure generator 13 Water tank
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平９−271784（ＪＰ，Ａ) 特開 昭49−37464（ＪＰ，Ａ) 特開 昭51−28342（ＪＰ，Ａ) 実開 昭50−146361（ＪＰ，Ｕ) 登録実用新案3026643（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B01D 21/00 - 21/34 ──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-9-271784 (JP, A) JP-A-49-37464 (JP, A) JP-A-51-28342 (JP, A) 146361 (JP, U) Registered utility model 3026643 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) B01D 21/00-21/34
Claims (3)
プと、該一次吸水ポンプと連通して再び吸引・攪拌する
二次吸水ポンプと、該二次吸水ポンプに連通して、種々
の流速・水流を生起させて攪拌させる流速変動負荷発生
筒部とから構成され、かつ少なくとも上記一次吸水ポン
プ、二次吸水ポンプ又は流速変動負荷発生筒部入口側に
凝集剤注入弁を設けたことを特徴とする液状凝集剤注入
攪拌装置。1. A primary water suction pump for sucking and stirring a liquid to be treated, a secondary water absorption pump communicating with the primary water absorption pump and sucking and stirring again, and communicating with the secondary water absorption pump for various flow rates. A flow-fluctuation load generating cylinder portion that generates and stirs a water flow and is provided with a coagulant injection valve at least on the inlet side of the primary water absorption pump, the secondary water suction pump, or the flow velocity fluctuation load generating cylinder portion. Liquid coagulant injection and stirring device.
吸水ポンプに吸引・攪拌された被処理液を再び循環させ
て吸引・攪拌させる手段を設けたことを特徴とする請求
項１記載の液状凝集剤注入攪拌装置。2. The liquid flocculant according to claim 1, wherein at least the primary water absorption pump or the secondary water absorption pump is provided with a means for circulating the suctioned and stirred liquid to be sucked and stirred again. Injection stirrer.
プに、起動時に水を供給する給水タンクを設けたことを
特徴とする請求項１又は２記載の液状凝集剤注入攪拌装
置。3. The liquid coagulant injection and stirring device according to claim 1, wherein a water supply tank for supplying water at startup is provided in the primary water absorption pump and the secondary water absorption pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34645998A JP3338392B2 (en) | 1998-12-07 | 1998-12-07 | Liquid coagulant injection stirrer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34645998A JP3338392B2 (en) | 1998-12-07 | 1998-12-07 | Liquid coagulant injection stirrer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000167306A JP2000167306A (en) | 2000-06-20 |
| JP3338392B2 true JP3338392B2 (en) | 2002-10-28 |
Family
ID=18383576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34645998A Expired - Fee Related JP3338392B2 (en) | 1998-12-07 | 1998-12-07 | Liquid coagulant injection stirrer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3338392B2 (en) |
-
1998
- 1998-12-07 JP JP34645998A patent/JP3338392B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000167306A (en) | 2000-06-20 |
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