JPH0681700U - Agglutination reactor - Google Patents
Agglutination reactorInfo
- Publication number
- JPH0681700U JPH0681700U JP2780393U JP2780393U JPH0681700U JP H0681700 U JPH0681700 U JP H0681700U JP 2780393 U JP2780393 U JP 2780393U JP 2780393 U JP2780393 U JP 2780393U JP H0681700 U JPH0681700 U JP H0681700U
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- tank
- water surface
- blades
- cylindrical tank
- 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.)
- Granted
Links
Landscapes
- Treatment Of Sludge (AREA)
Abstract
(57)【要約】
【目的】 汚泥に金属塩凝集剤を加え、強攪拌して汚泥
を改質する際に、汚泥中に含まれているマイクロエアー
や、ＣＯ2 ガスの気泡を汚泥から効果的に放出して除去
する。
【構成】 凝集剤を混合した汚泥が底部に供給される縦
長な円筒槽１０の中心沿いに水面上から槽底に達する回
転軸１２を設け、該回転軸の回りに上下方向に長い平羽
根１３を複数枚、放射状に取付けた凝集反応槽におい
て、前記円筒槽の内周に水面付近から槽底近くに達する
平板補助羽根１６を複数枚、放射状に取付ける。
(57) [Summary] [Purpose] When a metal salt coagulant is added to sludge and the mixture is stirred vigorously to modify the sludge, micro air and CO 2 gas bubbles contained in the sludge are effective from the sludge. It is released and removed. [Structure] A rotary shaft 12 that reaches the tank bottom from above the water surface is provided along the center of a vertically long cylindrical tank 10 in which sludge mixed with a coagulant is supplied to the bottom, and flat blades 13 that are long in the up-down direction around the rotation axis In a coagulation reaction tank in which a plurality of blades are radially attached, a plurality of flat plate auxiliary blades 16 extending from near the water surface to near the bottom of the tank are radially attached to the inner circumference of the cylindrical tank.
Description
【０００１】[0001]
この考案は、汚泥の造粒濃縮装置に供給する汚泥を金属塩凝集剤によって改質 （荷重中和）するための凝集反応装置に関する。 The present invention relates to a coagulation reaction device for modifying (load neutralizing) sludge supplied to a sludge granulating and concentrating device with a metal salt coagulant.
【０００２】[0002]
従来から、凝集剤を混合した汚泥が底部に供給される縦長な円筒槽の中心沿い に水面上から槽底に達する回転軸を設け、該回転軸の回りに平羽根を複数枚、放 射状に取付けた凝集反応槽は公知であり、金属塩凝集剤と汚泥の反応は非常に速 いので、回転軸を高速（約１５０ＲＰＭ）で回転し、凝集剤と汚泥を平羽根によ って激しく強攪拌している。 Conventionally, a rotating shaft that reaches the tank bottom from the water surface is provided along the center of a vertically long cylindrical tank in which sludge mixed with a coagulant is supplied to the bottom, and multiple flat blades are radiated around the rotating shaft. Since the reaction of the metal salt coagulant and sludge is very fast, the rotating shaft is rotated at a high speed (about 150 RPM), and the coagulant and sludge are violently moved by the flat blades. It is vigorously stirred.
【０００３】[0003]
上記従来装置により強攪拌して汚泥を改質することはできるが、汚泥中に含ま れているマイクロエアーや、汚泥のｐＨ低下に伴い汚泥中に発生するＣＯ2 ガス を除去することができず、マイクロエアーや、ＣＯ2 ガスを含む汚泥が造粒濃縮 装置に供給される。この造粒濃縮装置では供給された汚泥に高分子凝集剤を添加 し、造粒してペレットにするが、供給される汚泥が上述のようにマイクロエアー や、ＣＯ2 ガスを含んでいると、それらがペレット中に混入し、ペレットの強度 の低下、浮上によるスカム化、脱水ケーキの含水率の上昇、処理量の低下、汚泥 回収率の低下など脱水性能が大幅に低下する。Although it is possible to modify sludge by vigorous stirring with the above conventional device, it is not possible to remove micro air contained in sludge and CO 2 gas generated in sludge due to sludge pH decrease. Micro air and sludge containing CO 2 gas are supplied to the granulation concentrator. In this granulation concentrator, a polymer flocculant is added to the supplied sludge and granulated into pellets. If the supplied sludge contains micro air or CO 2 gas as described above, When they are mixed in the pellets, the dehydration performance is significantly reduced, such as a decrease in the pellet strength, scumming due to floating, an increase in the water content of the dehydrated cake, a decrease in the throughput, and a decrease in the sludge recovery rate.
【０００４】[0004]
本考案は上記問題点を解消するために開発されたもので、凝集剤を混合した汚 泥が底部に供給される縦長な円筒槽の中心沿いに水面上から槽底に達する回転軸 を設け、該回転軸の回りに上下方向に長い平羽根を複数枚、放射状に取付けた凝 集反応槽において、前記円筒槽の内周に水面付近から槽底近くに達する平板補助 羽根を複数枚、放射状に取付けたことを特徴とする。 The present invention was developed to solve the above-mentioned problems.A rotary shaft that reaches the tank bottom from the water surface is provided along the center of a vertically long cylindrical tank where sludge mixed with a coagulant is supplied to the bottom. In a coagulation reaction tank in which a plurality of flat blades long in the vertical direction are radially attached around the rotation axis, a plurality of flat plate auxiliary blades extending radially from near the water surface to near the bottom of the tank are radially attached to the inner circumference of the cylindrical tank. It is characterized by being installed.
【０００５】[0005]
図示の実施例において、１０は縦長の円筒槽、１１は槽内底部に汚泥と、金属 塩の混合物を供給する給泥管、１２は円筒槽の中心沿いに水面上から槽底に達す る回転軸、１３は回転軸の回りに放射状に取付けられて水面上から槽底近くに達 する上下方向に長い平羽根であり、平羽根は回転軸の回りに２枚、１８０°の位 相で取付けてある。１４は水面近くから凝集汚泥を排出し、次段の造粒濃縮装置 に供給する排泥管である。 円筒槽１０の直径は約１ｍ、深さは約３ｍ、水面からの水深は約２ｍ５０、回 転軸の中心から平羽根１３の翼端までの半径は約２０ｃｍであり、回転軸はモー タ、減速機１５により約１５０ＲＰＭで回転駆動される。 In the illustrated embodiment, 10 is a vertically long cylindrical tank, 11 is a mud supply pipe for supplying a mixture of sludge and metal salt to the bottom of the tank, and 12 is a rotation along the center of the cylindrical tank from the water surface to the tank bottom. Shafts and 13 are flat blades that are radially installed around the rotation axis and reach from the water surface to near the tank bottom in the vertical direction. Two flat blades are installed around the rotation axis in a 180 ° phase. There is. Reference numeral 14 is a sludge pipe that discharges the coagulated sludge from near the water surface and supplies it to the next-stage granulation and concentration device. The diameter of the cylindrical tank 10 is about 1 m, the depth is about 3 m, the water depth from the water surface is about 2 m50, the radius from the center of the rotating shaft to the blade tip of the flat blade 13 is about 20 cm, and the rotating shaft is a motor. It is rotationally driven by the speed reducer 15 at about 150 RPM.
【０００６】 円筒槽１０の内周には水面付近から槽底近くに達する上下方向に長い平板補助 羽根１６が４枚、９０°の位相で放射状に取付けてある。円筒槽の内周から平板 補助羽根の翼端までの半径方向の長さは約１０ｃｍである。On the inner circumference of the cylindrical tank 10, four vertically extending flat plate auxiliary blades 16 extending from near the water surface to near the tank bottom are radially attached at a phase of 90 °. The radial length from the inner circumference of the cylindrical tank to the blade tip of the flat plate auxiliary blade is about 10 cm.
【０００７】 円筒槽の底部に、給泥管１１で汚泥と金属塩凝集剤の混合物を供給し、槽内を ＬＶ＝５０ｍ／時以下、滞流時間２〜３分で上向流させながら回転軸１２を回転 駆動し、平羽根１３，１３で強攪拌を行うことにより汚泥を金属塩凝集剤で改質 することができる。 そして、平羽根の強攪拌により生じる旋回流の一部は、円筒槽の内周から放射 状に突出する補助板１６に衝突し、局部的に見て補助板１６にＰ点で衝突した旋 回流は上下方向の循環流Ａ，Ｂに変化して乱流を生じる。この乱流により汚泥同 志が衝突して含んでいるマイクロエア、ＣＯ2 ガスの気泡を放出すると共に、遊 離した気泡どおしが衝突して大きくなる。この大きくなった気泡は、円筒槽の上 部液面から容易に大気中に放出される。更に、この円筒槽で万が一抜け切れなか った気泡を次段の造粒濃縮槽へ持ち込ませない様、エア抜きボックス１７を円筒 槽外周側に設置してある。A mixture of sludge and a metal salt coagulant is supplied to the bottom of the cylindrical tank by a mud supply pipe 11, and the inside of the tank is rotated while flowing upward for LV = 50 m / hour or less and a dwell time of 2 to 3 minutes. By rotating the shaft 12 and performing strong agitation with the flat blades 13 and 13, the sludge can be modified with the metal salt coagulant. Then, a part of the swirling flow generated by the strong stirring of the flat blades collides with the auxiliary plate 16 that radially projects from the inner circumference of the cylindrical tank, and locally sees the swirling flow that collides with the auxiliary plate 16 at point P. Changes into circulation flows A and B in the vertical direction to generate turbulence. Due to this turbulent flow, the air bubbles of micro air and CO 2 gas contained in the sludges colliding with each other are released, and the loosened bubbles collide with each other and become large. The enlarged bubbles are easily released from the upper liquid surface of the cylindrical tank into the atmosphere. Further, an air vent box 17 is installed on the outer peripheral side of the cylindrical tank so as to prevent air bubbles that could not be exhausted in this cylindrical tank from being brought into the next granulation and concentration tank.
【０００８】[0008]
このように本考案の凝集反応槽によれば汚泥を金属塩凝集剤で改質することが できるほか、汚泥に含まれているマイクロエアーや、反応中にｐＨの低下で生じ るＣＯ2 ガスを汚泥から放出させ、槽内の水面から大気に放出する。従って、次 段の造粒濃縮装置に供給される汚泥は気泡を含まないので、造粒濃縮装置は強度 のあるペレットを造粒でき、脱水性能の低下を生じない。そして、従来は処理が 困難とされていた夏季の腐敗汚泥からも良好なペレットが造粒可能になった。As described above, according to the coagulation reaction tank of the present invention, sludge can be modified with a metal salt coagulant, and micro air contained in sludge and CO 2 gas generated by a decrease in pH during the reaction can be generated. It is released from sludge and released from the water surface in the tank to the atmosphere. Therefore, since the sludge supplied to the next-stage granulation / concentrator does not contain air bubbles, the granulation / concentrator can granulate strong pellets without deteriorating the dehydration performance. In addition, good pellets can now be granulated from spoilage sludge in the summer, which was previously difficult to process.
【図１】本考案の凝集反応槽の一実施例の断面図であ
る。FIG. 1 is a cross-sectional view of an embodiment of a flocculation reaction tank of the present invention.
【図２】図１のＩＩ−ＩＩ線での断面図である。FIG. 2 is a sectional view taken along line II-II in FIG.
１０ 円筒槽 １１ 給泥管 １２ 回転軸 １３ 平板羽根 １４ 排泥管 １６ 平板補助羽根 10 Cylindrical Tank 11 Mud Supply Pipe 12 Rotating Shaft 13 Flat Plate Blade 14 Mud Pipe 16 Flat Plate Auxiliary Blade
───────────────────────────────────────────────────── フロントページの続き (72)考案者 松中 真 東京都新宿区西新宿３丁目４番７号 栗田 工業株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Makoto Matsunaka 3-4-7 Nishishinjuku, Shinjuku-ku, Tokyo Kurita Industry Co., Ltd.
Claims (1)
る縦長な円筒槽の中心沿いに水面上から槽底に達する回
転軸を設け、該回転軸の回りに上下方向に長い平羽根を
複数枚、放射状に取付けた凝集反応槽において、前記円
筒槽の内周に水面付近から槽底近くに達する平板補助羽
根を複数枚、放射状に取付けたことを特徴とする凝集反
応槽。1. A rotary shaft extending from the water surface to the bottom of the tank is provided along the center of a vertically long cylindrical tank in which sludge mixed with a coagulant is supplied to the bottom, and flat blades long in the vertical direction are provided around the rotary shaft. In the agglomeration reaction tank having a plurality of radial attachments, a plurality of flat plate auxiliary blades extending radially from the vicinity of the water surface to near the bottom of the aforesaid cylindrical tank are attached radially.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1993027803U JP2602704Y2 (en) | 1993-04-30 | 1993-04-30 | Coagulation reaction tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1993027803U JP2602704Y2 (en) | 1993-04-30 | 1993-04-30 | Coagulation reaction tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0681700U true JPH0681700U (en) | 1994-11-22 |
| JP2602704Y2 JP2602704Y2 (en) | 2000-01-24 |
Family
ID=12231142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1993027803U Expired - Fee Related JP2602704Y2 (en) | 1993-04-30 | 1993-04-30 | Coagulation reaction tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2602704Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101879239B1 (en) * | 2017-05-04 | 2018-07-17 | 한국외국어대학교 연구산학협력단 | Apparatus for mixing flocculation |
| JP2019520214A (en) * | 2016-08-23 | 2019-07-18 | ▲呉▼云萍ＷＵ， Ｙｕｎｐｉｎｇ | High-performance tubular coagulation mixer and dosing stirrer |
-
1993
- 1993-04-30 JP JP1993027803U patent/JP2602704Y2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019520214A (en) * | 2016-08-23 | 2019-07-18 | ▲呉▼云萍ＷＵ， Ｙｕｎｐｉｎｇ | High-performance tubular coagulation mixer and dosing stirrer |
| KR101879239B1 (en) * | 2017-05-04 | 2018-07-17 | 한국외국어대학교 연구산학협력단 | Apparatus for mixing flocculation |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2602704Y2 (en) | 2000-01-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |