JPS6161866B2 - - Google Patents
Info
- Publication number
- JPS6161866B2 JPS6161866B2 JP57025636A JP2563682A JPS6161866B2 JP S6161866 B2 JPS6161866 B2 JP S6161866B2 JP 57025636 A JP57025636 A JP 57025636A JP 2563682 A JP2563682 A JP 2563682A JP S6161866 B2 JPS6161866 B2 JP S6161866B2
- Authority
- JP
- Japan
- Prior art keywords
- flotation
- sediment
- tank
- inclined plate
- clear water
- 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
Links
- 238000005188 flotation Methods 0.000 claims description 56
- 238000000926 separation method Methods 0.000 claims description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- 239000013049 sediment Substances 0.000 claims description 27
- 239000007788 liquid Substances 0.000 description 8
- 239000002245 particle Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 4
- 230000005484 gravity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Landscapes
- Physical Water Treatments (AREA)
Description
【発明の詳細な説明】
この発明は、固液分離を行なう浮上分離装置に
関し、浮上分離槽内の浮上筒の外周に螺旋形傾斜
板を設け、沈降物の沈降距離を短かくして沈降時
間を短縮するようにし、沈降物の完全分離を図
り、固液分離が効率的に行なえるようにしたもの
である。Detailed Description of the Invention The present invention relates to a flotation separator for solid-liquid separation, and a spiral inclined plate is provided on the outer periphery of a flotation cylinder in a flotation tank to shorten the settling distance of sediment and shorten the settling time. This is to ensure complete separation of sediment and efficient solid-liquid separation.
一般に、固液分離を行なう浮上分離法は、水中
に懸濁した微細な固体や液体粒子をそのままある
いは気泡に付着させて浮上させ、浮上物を濃縮分
離するとともに、その下部に清澄水を得る一種の
工学的操作であり、含油廃水処理、下水処理、下
水汚泥の濃縮などの水処理分野のほか、石炭工業
や繊維工業などにおいて広く応用されている技術
である。 In general, flotation separation method, which performs solid-liquid separation, is a type of floating separation method in which fine solids and liquid particles suspended in water are floated as they are or attached to air bubbles, and the floating substances are concentrated and separated, and clear water is obtained at the bottom. It is an engineering operation that is widely applied in water treatment fields such as oil-containing wastewater treatment, sewage treatment, and sewage sludge thickening, as well as in the coal industry and textile industry.
そして、この種浮上分離法による浮上分離装置
では、一般に、浮上分離槽、浮上物掻取機、浮上
物取出口、原水流入口、空気吹込機などを備え、
処理すべき原水をそのままあるいは空気、加圧水
等を混合して浮上分離槽の槽底より送入し、懸濁
物に微細な気泡を付着させるなどして漸次水面上
に浮上させたのち、これを掻取機により掻き集め
るとともに、清澄水は別途配管により収集するよ
うにしている。 A flotation device using this type of flotation separation method is generally equipped with a flotation tank, a floating object scraper, a floating object outlet, a raw water inlet, an air blower, etc.
The raw water to be treated is fed into the flotation tank bottom either as it is or mixed with air, pressurized water, etc., and fine air bubbles are attached to the suspended matter to gradually float it to the water surface. In addition to scraping with a scraper, clear water is collected through separate piping.
ここで、前述の浮上分離操作においては、浮遊
物をすべて浮上させて完全な清澄水を得ることが
理想であるが、一部浮上せずに沈降するものがあ
り、その結果、十分な清澄水を得ることが困難と
なり、浮上物の回収率を低下させる結果となつて
いる。これは、浮上分離槽内において、浮上しつ
つある粒子と沈降しつつある粒子とが、その比重
差や気泡の付着の有無などによつて同時に生成
し、しかも、この両者が混在して対流を起こすた
めであり、さらに、沈降する粒子の沈降速度が比
較的小さいため、粒子の沈降と浮上とが同一場所
で同時に起こるためである。 In the above-mentioned flotation separation operation, it is ideal to have all floating objects float to the surface and obtain completely clear water, but some of them do not float and settle, resulting in insufficient clear water. This results in a decrease in the recovery rate of floating objects. This is because particles that are floating and particles that are settling are generated simultaneously in the flotation separation tank due to differences in their specific gravity and the presence or absence of air bubbles, and the mixture of these particles causes convection. This is because the sedimentation velocity of the sedimenting particles is relatively low, so that the sedimentation and floating of the particles occur simultaneously at the same location.
そこで、従来より、沈降物を除去するために、
浮上分離槽の槽底に沈降物掻取機を設け、これを
回転駆動し、沈降物を掻き集めて槽底より取り出
す方法が採られている。しかし、この場合、動力
を要するのみならず、構造が複雑となり、必らず
しも満足すべきものではない。 Therefore, in order to remove sediment,
A method is adopted in which a sediment scraper is provided at the bottom of a flotation separation tank and is driven to rotate to scrape up sediment and remove it from the tank bottom. However, in this case, not only does it require power, but the structure is also complicated, which is not necessarily satisfactory.
この発明は、前記の点に留点し、浮上分離槽内
の浮上筒の外周に螺旋形傾斜板を設け、効率的な
固液分離が行なえるようにしたものであり、つぎ
にこの発明を、その１実施例を示した図面ととも
に詳細に説明する。 This invention focuses on the above-mentioned points and provides a spiral inclined plate around the outer periphery of the flotation cylinder in the flotation separation tank to enable efficient solid-liquid separation. will be described in detail with reference to drawings showing one embodiment thereof.
図面において、１は上面が開口された上下方向
の円筒状の浮上分離槽、２は浮上分離槽１の底部
を構成する漏斗状の槽底部であり、底栓３を介し
て沈降物取出口４に連通されている。５は浮上分
離槽１内に同軸的に設けられ内部に浮上室を構成
する上下方向の浮上筒であり、その上端の浮上口
６が浮上分離槽１内の上部に開口されるととも
に、下端部が浮上分離槽１の槽壁を貫通した流入
管７に連通され、懸濁水、加圧水、空気などが流
入管７より浮上筒５内に流入される。８は浮上筒
５の外周に一体にかつ等間隔に設けられ浮上分離
槽１内を上下方向に５段に分割する４枚の螺旋形
傾斜板であり、各傾斜板８はそれぞれ60゜以上の
傾斜角を有し、浮上分離槽１の槽底に向かつて形
成されており、各傾斜板８間にはそれぞれ槽底に
向かう螺旋状の沈降室が構成され、前記浮上室と
分離されるものである。９は浮上分離槽１の上端
に設けられ下面に複数枚のゴム製のへら状掻取板
１０が放射状に設けられた浮上物掻取機であり、
電動機１１の駆動により掻取機９が回転される
と、浮上分離槽１の上面の浮上物が掻き取られ
る。１２は浮上分離槽１の上部に形成され掻取機
９で掻き取られた浮上物を取り出す浮上物排出
口、１３は先端の取出口１３′が各傾斜板８の下
面の近傍にそれぞれ開口された５本の清澄水取出
管であり、各取出管１３はそれぞれ集合管１４に
接続され、さらに排水管１５に連結されている。 In the drawing, 1 is a vertically cylindrical flotation tank with an open top, and 2 is a funnel-shaped tank bottom forming the bottom of the flotation tank 1, which is connected to a sediment outlet 4 through a bottom plug 3. is communicated with. Reference numeral 5 denotes a vertical flotation tube which is coaxially provided in the flotation separation tank 1 and forms a flotation chamber therein. is communicated with an inflow pipe 7 that penetrates the tank wall of the flotation separation tank 1, and suspended water, pressurized water, air, etc. flow into the flotation tube 5 from the inflow pipe 7. Reference numeral 8 designates four spiral-shaped inclined plates that are integrally provided on the outer circumference of the flotation tube 5 and are equally spaced to divide the interior of the flotation separation tank 1 into five stages in the vertical direction. It has an inclination angle and is formed toward the bottom of the flotation separation tank 1, and a spiral settling chamber facing the tank bottom is formed between each inclined plate 8, and is separated from the flotation chamber. It is. Reference numeral 9 denotes a floating object scraper which is installed at the upper end of the flotation separation tank 1 and has a plurality of rubber spatula-shaped scraping plates 10 radially provided on the lower surface;
When the scraper 9 is rotated by the drive of the electric motor 11, floating objects on the upper surface of the flotation separation tank 1 are scraped off. Numeral 12 is a floating material discharge port formed in the upper part of the flotation separation tank 1 to take out the floating material scraped by the scraper 9, and reference numeral 13 is a discharging port 13' at the tip which is opened in the vicinity of the lower surface of each inclined plate 8. There are five clear water take-out pipes, and each take-out pipe 13 is connected to a collecting pipe 14, and further connected to a drain pipe 15.
つぎに、前記実施例の動作について説明する。 Next, the operation of the embodiment will be explained.
まず、流入管７より懸濁水、加圧水、空気など
が送り込まれてくると、これが、浮上筒５内を上
昇する間に微細気泡を付着した粒子団と清澄水と
の混合物となり、浮上口６より浮上分離槽１内に
流出される。そして、浮上口６より流出された混
合液のうち、浮上物は、浮上分離槽１の上面に達
すると、電動機１１により回転する掻取機９によ
り掻き取られて排出口１２より排出される。一
方、浮上口６より流出された混合液のうち、その
比重が比較的大なるもの、気泡の付着が不十分な
もの等の沈降物１６は、液中を沈降し、各傾斜板
８上に沈降して傾斜板８上をすべつて下降し、順
次槽底に案内され、槽底部２に堆積される。この
槽底部２の槽底沈降物１６′は、底栓３を開くこ
とにより沈降物取出口４より回収される。 First, when suspended water, pressurized water, air, etc. are sent from the inflow pipe 7, this becomes a mixture of particle groups with fine bubbles attached and clear water while rising inside the flotation tube 5, and then flows from the flotation port 6. It flows out into the flotation separation tank 1. When the floating objects in the liquid mixture flowing out from the flotation port 6 reach the upper surface of the flotation separation tank 1, they are scraped off by a scraper 9 rotated by an electric motor 11 and discharged from the discharge port 12. On the other hand, among the liquid mixture flowing out from the flotation port 6, sediments 16 that have a relatively large specific gravity or that have insufficient air bubbles settle in the liquid and are deposited on each inclined plate 8. It settles, slides down on the inclined plate 8, is guided to the bottom of the tank, and is deposited on the bottom 2 of the tank. The tank bottom sediment 16' in the tank bottom 2 is collected from the sediment outlet 4 by opening the bottom plug 3.
さらに、各傾斜板８の下面部分には、その近傍
の沈降物１６がその下方の他の傾斜板８上に沈降
するため、清澄水が分離集合しており、この清澄
水が各取出口１３′より取出管１３および集合管
１４を介して排水管１５より取り出される。 Further, on the lower surface of each inclined plate 8, the sediment 16 in the vicinity settles onto other inclined plates 8 below, so clear water is separated and collected, and this clear water is collected at each outlet 13. ', and is taken out from the drain pipe 15 via the take-out pipe 13 and the collecting pipe 14.
したがつて、前記実施例によると、浮上分離槽
１内の浮上筒５の外周に４枚の螺旋形傾斜板８を
等間隔に設けることにより、浮上分離槽１のほぼ
全長に等しい沈降物１６の沈降距離を各傾斜板８
により５段に分割することができるため、各傾斜
板８間に前記の1/5の沈降距離を形成することが
でき、沈降物１６の沈降時間も1/5に短縮でき、
沈降物１６を各傾斜板８上に速かに沈降させるこ
とができ、しかも、傾斜板８上に沈降された沈降
物１６は、傾斜板８が沈降物１６のすべり落ちる
安息角60゜以上の傾斜角を有するため、傾斜板８
上をすべり落ち、順次槽底部２に堆積され、動力
を用いることなく、また、構造を複雑にすること
なく、沈降物１６を容易に取り出すことができる
ものである。 Therefore, according to the embodiment, by providing four spiral inclined plates 8 at equal intervals around the outer periphery of the flotation cylinder 5 in the flotation tank 1, the sediment 16 is approximately equal to the entire length of the flotation tank 1. The settling distance of each inclined plate 8
Since it can be divided into five stages, it is possible to form a settling distance of 1/5 of the above between each inclined plate 8, and the settling time of the sediment 16 can also be shortened to 1/5.
The sediment 16 can be quickly settled onto each inclined plate 8, and the sediment 16 settled on the inclined plate 8 can be easily deposited at an angle of repose of 60° or more at which the inclined plate 8 allows the sediment 16 to slide down. Since it has an inclination angle, the inclined plate 8
The sediment 16 can be easily taken out without using power or complicating the structure.
また、浮上筒５内の浮上室と各傾斜板８間にお
ける沈降室とが浮上分離槽１内で分離して構成さ
れるため、浮上物と沈降物１６との混合を防止
し、両者を効果的に分離することができ、さら
に、各傾斜板８間に形成された沈降室は浮上水流
の影響を受けることがないため、極めて静的に清
澄水と沈降物１６との分離が行なえるものであ
り、しかも、この清澄水を、その清澄度のもつと
も高い傾斜板８の下面近傍で取り出すことができ
るため、完全な清澄水として得ることができるも
のであり、浮上物、沈降物１６および清澄水を効
率的に分離できるものである。 In addition, since the flotation chamber in the flotation tube 5 and the settling chamber between each inclined plate 8 are configured to be separated in the flotation separation tank 1, mixing of the floating objects and the sediment 16 is prevented, and both can be effectively Further, since the settling chamber formed between each inclined plate 8 is not affected by the floating water flow, clear water and sediment 16 can be separated very statically. Moreover, since this clear water can be taken out near the bottom surface of the inclined plate 8, which has the highest degree of clarity, completely clear water can be obtained, and the floating matter, sediment 16, and clear water can be extracted. It can separate water efficiently.
さらに、前記実施例では、円筒状の浮上分離槽
１を使用し、その水平断面を小さくすることがで
きるため、傾斜板８のすべり角、すなわち傾斜角
を必然的に大きくとることができ、かつ、そのピ
ツチも大きくでき、したがつて、沈降物１６を速
かに槽底部２に移動させ得るものである。 Furthermore, in the embodiment, the cylindrical flotation tank 1 is used and its horizontal cross section can be made small, so the sliding angle, that is, the inclination angle, of the inclined plate 8 can be inevitably made large. , the pitch thereof can be made large, and therefore the sediment 16 can be quickly moved to the tank bottom 2.
なお、浮上筒５の外周に設けられた傾斜板８
は、沈降物１６の量に応じて任意に増減すればよ
い。 Note that the inclined plate 8 provided on the outer periphery of the floating tube 5
may be arbitrarily increased or decreased depending on the amount of sediment 16.
以上のように、この発明の浮上分離装置による
と、上下方向の円筒状浮上分離槽内に浮上筒を配
設するとともに、浮上筒の外周に沈降物がすべり
落ちる程度の傾斜角を有する螺旋形傾斜板を設け
ることにより、沈降物の沈降距離を短かくして沈
降時間を短縮し、全体としての沈降速度を増大さ
せることができ、沈降物と浮上物との混合を確実
に防止し、効率的な分離が実現できるとともに、
構造を複雑にすることなく、また動力を要するこ
となく沈降物の完全分離を可能にでき、さらに、
傾斜板の下面の近傍に清澄水取出管の取出口を開
口することにより、清澄度の高い清澄水を取り出
すことができるものである。 As described above, according to the flotation separation device of the present invention, the flotation tube is disposed in the vertical cylindrical flotation tank, and the flotation tube has a spiral shape having an inclination angle such that the sediment can slide down on the outer periphery of the flotation tube. By providing an inclined plate, it is possible to shorten the settling distance of the sediment, shorten the settling time, and increase the overall settling speed.It is possible to reliably prevent mixing of sediment and floating objects, and to improve efficiency. Separation can be achieved and
Complete separation of sediment is possible without complicating the structure or requiring power, and furthermore,
Clear water with a high degree of clarity can be taken out by opening the outlet of the clear water take-out pipe near the lower surface of the inclined plate.
図面はこの発明の浮上分離装置の１実施例の一
部切欠断面図である。
１……浮上分離槽、５……浮上筒、８……傾斜
板、１３……清澄水取出管、１３′……取出口、
１６……沈降物。
The drawing is a partially cutaway sectional view of one embodiment of the flotation separation device of the present invention. 1...Flotation separation tank, 5...Flotation tube, 8...Slanted plate, 13...Cleared water take-out pipe, 13'...Take-out port,
16...Sediment.
Claims (1)
構成する上下方向の浮上筒を配設し、前記浮上筒
の外周に沈降物がすべり落ちる程度の傾斜角を有
し、前記浮上分離槽の槽底に向かう螺旋形傾斜板
を設けたことを特徴とする浮上分離装置。 ２ 傾斜板の下面の近傍に清澄水取出管の取出口
を開口したことを特徴とする特許請求の範囲第１
項に記載の浮上分離装置。[Scope of Claims] 1. A vertical flotation tube constituting a flotation chamber is arranged in a vertical cylindrical flotation separation tank, and the flotation tube has an angle of inclination to the extent that sediment can slide down the outer periphery of the flotation tube. A flotation separation device characterized in that a spiral inclined plate facing the bottom of the flotation tank is provided. 2. Claim 1, characterized in that an outlet for the clear water outlet pipe is opened near the lower surface of the inclined plate.
The flotation separation device described in section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57025636A JPS58143860A (en) | 1982-02-18 | 1982-02-18 | Floating separation apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57025636A JPS58143860A (en) | 1982-02-18 | 1982-02-18 | Floating separation apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58143860A JPS58143860A (en) | 1983-08-26 |
| JPS6161866B2 true JPS6161866B2 (en) | 1986-12-27 |
Family
ID=12171335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57025636A Granted JPS58143860A (en) | 1982-02-18 | 1982-02-18 | Floating separation apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58143860A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6056125A (en) * | 1997-07-08 | 2000-05-02 | U. S. Department Of Energy | Cross flow cyclonic flotation column for coal and minerals beneficiation |
| CN112208959B (en) * | 2020-09-16 | 2022-06-24 | 衢州英特高分子材料有限公司 | Solid-liquid different-opening discharge type storage tank |
-
1982
- 1982-02-18 JP JP57025636A patent/JPS58143860A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58143860A (en) | 1983-08-26 |
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