JP2018143936A - Precipitator - Google Patents
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- JP2018143936A JP2018143936A JP2017039668A JP2017039668A JP2018143936A JP 2018143936 A JP2018143936 A JP 2018143936A JP 2017039668 A JP2017039668 A JP 2017039668A JP 2017039668 A JP2017039668 A JP 2017039668A JP 2018143936 A JP2018143936 A JP 2018143936A
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- 239000012716 precipitator Substances 0.000 title abstract 4
- 238000004062 sedimentation Methods 0.000 claims description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 30
- 239000007787 solid Substances 0.000 abstract description 18
- 239000007788 liquid Substances 0.000 description 8
- 238000000926 separation method Methods 0.000 description 5
- 239000002562 thickening agent Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005352 clarification Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
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Abstract
Description
本発明は、原水（固形分を含む水）を整流して流し、固形分を効率的に重力によって沈降させる、沈降分離装置用整流壁および該沈降分離装置用整流壁を用いた沈降分離装置に関する。 The present invention relates to a rectifying wall for a sedimentation separator and a sedimentation separator using the rectifying wall for the sedimentation separator, in which raw water (water containing solids) is rectified and flowed and the solid content is efficiently settled by gravity. .
沈降分離装置には濃厚スラリーを得ることを目的とする濃縮装置（シックナー）と、清澄な液を得ることを目的とする清澄装置（横流式沈澱池・クラリファイヤー）とがある。
濃縮装置は、装置内に原水を流すと、液は出口方向に流れ、固形分は液の流れに乗って出口方向に流れながら重力によって下方に沈降させる装置である。また清澄装置（例えば横流式沈澱池）は、形は矩形または円形で、流入部或いは中心部の給液口から入った原水は固形物を沈降させながら流入部或いは円周方向に進み越流部から清澄な液を越流させ、沈降した固形物はレーキで中心部に集め排出口から排出する装置である。
There are a concentration device (thickener) for the purpose of obtaining a thick slurry and a clarification device (a cross-flow type precipitation basin / clarifier) for the purpose of obtaining a clear liquid.
The concentration device is a device in which when raw water is passed through the device, the liquid flows in the direction of the outlet, and the solid matter is submerged by gravity while flowing in the direction of the liquid and flowing toward the outlet. The clarification device (for example, a cross-flow type sedimentation basin) has a rectangular or circular shape, and the raw water that has entered from the inlet or the central liquid supply port advances in the inflow or circumferential direction while allowing solids to settle down. This is a device that allows the clear liquid to overflow and collects the settled solids at the center by rake and discharges it from the outlet.
これらの装置で水中の懸濁固形分を効率的に沈降させるためには、装置内の原水の流れを整流して流すことが必要であるが、実際には装置内に偏流が生起し固形分の効率的な除去が困難であった。 In order to efficiently settle the suspended solids in water with these devices, it is necessary to rectify the flow of the raw water in the device. It was difficult to remove efficiently.
そこで従来は、装置内での偏流を防止するために、例えば横流沈澱池では、流入部や流出部に整流壁を設けていた。この整流壁は、水の流れを阻害し、水の持っているエネルギーを減ずることによって、水流のエネルギーの緩急の流れが局部的不均衡を是正し、全体の流れとして、出来るだけ均一なものとする目的のために設けられていた。そしてこれらの従来の整流壁の開口部は、もっぱら円形状の孔が多数設けられ、その開口面積は整流壁面積の約６％の割合で設けられたものであった。 Therefore, conventionally, in order to prevent a drift in the apparatus, for example, in a cross-flow sedimentation basin, a rectifying wall is provided at the inflow portion or the outflow portion. This rectifying wall obstructs the flow of water and reduces the energy that water has, so that the slow and slow flow of the water flow corrects the local imbalance and makes the overall flow as uniform as possible. Was provided for the purpose of. The openings of these conventional rectifying walls are provided with many circular holes, and the opening area is provided at a ratio of about 6% of the rectifying wall area.
しかしながら、従来の整流壁は、一定の整流効果はあるが整流孔通過部の流速が過大となることから、目的とする固形物の沈降が妨げられ除去率の低下を来していた。
本発明者は、これら従来の欠点がなく、沈降分離装置内の水流の乱れを防止し、かつ固形物の除去率を効果的に高める整流壁の構造について種々研究を重ねた結果、本発明を完成するに至った。
However, the conventional rectifying wall has a certain rectifying effect, but the flow velocity at the rectifying hole passage portion is excessive, so that sedimentation of the target solid matter is prevented and the removal rate is lowered.
The present inventor did not have these conventional drawbacks, and as a result of various researches on the structure of the rectifying wall that prevents the disturbance of the water flow in the sedimentation separator and effectively increases the solids removal rate, It came to be completed.
すなわち、本発明は、整流壁体にスリット状開口部を縦に並設し、かつ隣接する開口部間に間隔を設けてなる沈降分離装置用整流壁及び該整流壁を沈降分離装置内に少なくとも１箇所設けたことを特徴とする沈降分離装置である。 That is, the present invention provides a rectifying wall for a sedimentation separation device in which slit-like openings are arranged vertically in the rectification wall body, and a space is provided between adjacent openings, and the rectification wall is at least in the sedimentation separation device. It is a sedimentation separator characterized by providing one place.
本発明の沈降分離装置用整流壁を用いれば、沈降分離装置内に原水を全断面に均等に流して水流の乱れを防止すると共に固形物粒子の密度帯を形成させて除去率を効果的に高めることが出来る。 If the rectifying wall for a sedimentation separator of the present invention is used, the raw water is allowed to flow evenly in the entire cross section in the sedimentation separator to prevent the disturbance of the water flow and to form the density band of solid particles, thereby effectively reducing the removal rate. Can be raised.
本発明の沈降分離装置用整流壁について説明する。
図１は、沈降分離装置用整流壁の正面図である。整流壁体１に縦方向に延びたスリット状開口部２を並列して設ける。スリット状開口部２の開口幅３は、沈降分離装置の規模および原水の流入量によって変化するが、一般的には２〜５０ｃｍ、好ましくは５〜２０ｃｍの範囲が最適である。また隣接するスリット状開口部２間の間隔幅４も原水中の固形分濃度および原水中の流入量によっても変化するが、一般的には１０〜２５０ｃｍ、好ましくは２５〜１００ｃｍが最適である。
整流壁体１の素材としては、コンクリート、鉄板、ステンレス等の合金板、合成樹脂板（例えば硬質塩化ビニル板）等が揚げられる。
またスリット状開口部２の断面積は、水流（原水）の通水断面積の８〜５０％、好ましくは１０〜２５％が最適である。
The rectifying wall for the sedimentation separator of the present invention will be described.
FIG. 1 is a front view of a rectifying wall for a sedimentation separator. A slit-
Examples of the material of the rectifying
Moreover, the cross-sectional area of the slit-
本発明の沈降分離装置用整流壁が使用できる沈降分離装置としては特に制限されるものではないが、例えば横流式普通沈澱池、放射流式沈澱池、傾斜板式沈澱池、水流傾斜板式沈澱池等の清澄装置、円形で中心部の給液口から入ったスラリーの固形物を沈降させながら円周方向に進み越流部から清澄な液と越流させる回分式、連続式等の濃縮装置に使用できる。 Although it does not restrict | limit especially as a sedimentation separator which can use the baffle wall for sedimentation separators of this invention, For example, a horizontal flow type normal sedimentation basin, a radial flow type sedimentation basin, a sloping plate type sedimentation basin, a water current sloping plate type sedimentation basin etc. Used in batch-type and continuous-type concentrators that allow the slurry solids that enter from the liquid supply port in the center to settle in the circumferential direction and flow over the clear liquid from the overflow section. it can.
本発明の沈降分離装置用整流壁は、新規に沈降分離装置を建設する場合には、該沈降分離装置と一体的に設置することが出来る。たとえば横流沈澱池の場合であれば、該装置の流入部、流出部或いは、該装置の中間部等の適宜の箇所に水流の流れ方向に対し、対面するように設置することができる。 The rectifying wall for a sedimentation separator of the present invention can be installed integrally with the sedimentation separator when a sedimentation separator is newly constructed. For example, in the case of a cross-flow sedimentation basin, it can be installed at an appropriate location such as an inflow portion, an outflow portion, or an intermediate portion of the device so as to face the flow direction of the water flow.
また既設の沈降分離装置に設置する場合は、例えば図２に示すように整流壁体１の上部にフロート５を設けたフロート付整流壁６として沈降分離装置の横幅に合わせて設置すれば本発明の沈降分離装置とすることができる。
Moreover, when installing in the existing sedimentation separator, if it installs according to the width of a sedimentation separator as the rectification wall 6 with the float which provided the float 5 in the upper part of the
本発明の沈降分離用整流壁は、沈降分離装置内の水流（原水）を全断面に均等に流すことが目的であるので、該装置の水底部近傍から水面に至る水深部に設置することが好ましいが、該装置の水底に固形物の掻寄機等が設置されている場合には、その掻寄機に接触しない範囲で水底の掻寄機上部近傍迄設置すれば良い。 The purpose of the rectifying wall for sedimentation separation of the present invention is to install the water flow (raw water) in the sedimentation separation device evenly over the entire cross section, so that it can be installed in the depth of water from the vicinity of the bottom of the device to the water surface. However, when a solid scraper or the like is installed on the bottom of the apparatus, it may be installed up to the vicinity of the upper part of the bottom of the scraper without touching the scraper.
本発明の沈降分離装置用整流壁は、図２に示したフロート付整流壁６の変形として、整流壁体１を円弧状とすることによって、このものを横方向に連接することによって円形状の整流壁とすることができる。このように円形状の整流壁とすることによって、円形の連続シックナーにも好適に設置することができる。 The flow straightening wall for a sedimentation separator according to the present invention is a modification of the flow straightening wall 6 shown in FIG. It can be a rectifying wall. Thus, by setting it as a circular-shaped baffle wall, it can install suitably also in a circular continuous thickener.
本発明の沈降分離装置用整流壁を設けた沈降分離装置について説明する。
図３は、流入口に整流壁を設けた状態を示すシックナー沈降分離装置の側断面図である。シックナー沈降分離装置７の流入管８より原水をセンターウエル９に導入し、原水はセンターウエル９の下部を通過し、スラリーの固形物を沈降させながら円周方向に進み越流部１０から清澄な液を越流させ、沈降した固形物はレーキ１２で中心に集め排出管１１から排出し、レーキ１２はモーター１３にて回転している装置である。
The sedimentation separator provided with the flow regulating wall for the sedimentation separator of the present invention will be described.
FIG. 3 is a side cross-sectional view of the thickener sedimentation separator showing a state in which a rectifying wall is provided at the inlet. The raw water is introduced into the center well 9 from the inflow pipe 8 of the thickener sedimentation separator 7, and the raw water passes through the lower part of the center well 9, progresses in the circumferential direction while allowing the solid matter of the slurry to settle, and clears from the overflow section 10. The liquid that has flowed over and settled is collected at the center by the
センターウエル９には該センターウエル９の下部に整流壁１を設け、沈降分離装置７内に原水を全断面に均等に流して水流の乱れを防止すると共に固形物粒子の密度帯を形成させて除去率を効果的に高めると共に、沈降した固形物を濃縮し固形物の濃度を高められる。該整流壁１は回転しているレーキ１２に接触しない範囲で水底の該レーキ１２の上部近傍の位置まで設置すれば良い。
The center well 9 is provided with a rectifying
沈降分離装置７内のセンターウエル９の下部に整流壁１を設けると共に、該センターウエル９から越流部１０の中間に図２に示したフロート付整流壁６を円弧状に設ける事が出来る（図示せず）。
該センターウエル９の下部に整流壁１を設けた上に、フロート付整流壁６を円管状に設けることにより、好適に固形物粒子の除去率を高める。
The
By providing the
１・・・整流壁
２・・・スリット状開口部
５・・・フロート
６・・・フロート付整流壁
DESCRIPTION OF
Claims (2)
A rectifying wall for a sedimentation separator is provided at least in one place in the sedimentation separator, wherein a slit-like opening is provided in the rectifying wall body in the vertical direction, and a gap is provided between the adjacent openings. Settling separator.
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|---|---|---|---|
| JP2017039668A JP2018143936A (en) | 2017-03-02 | 2017-03-02 | Precipitator |
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| JP2017039668A JP2018143936A (en) | 2017-03-02 | 2017-03-02 | Precipitator |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58166905A (en) * | 1982-03-09 | 1983-10-03 | ピ−ルケンロ−ド−ヴイニテツクス・ベヘ−ル・ベス・ロ−テム・ベンノツトシヤツプ | Plate separator |
| JPH0899003A (en) * | 1994-09-29 | 1996-04-16 | Yoji Nagano | Filter for fluid |
| US20040016695A1 (en) * | 2002-07-26 | 2004-01-29 | Hallahan Dennis F. | Radial flow septic tank |
| JP2004230348A (en) * | 2003-01-31 | 2004-08-19 | Tsukishima Kikai Co Ltd | Filtration apparatus |
| US20140138327A1 (en) * | 2011-04-20 | 2014-05-22 | Hatch Associates Pty Ltd | Re-entrainment prevention apparatus |
-
2017
- 2017-03-02 JP JP2017039668A patent/JP2018143936A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58166905A (en) * | 1982-03-09 | 1983-10-03 | ピ−ルケンロ−ド−ヴイニテツクス・ベヘ−ル・ベス・ロ−テム・ベンノツトシヤツプ | Plate separator |
| JPH0899003A (en) * | 1994-09-29 | 1996-04-16 | Yoji Nagano | Filter for fluid |
| US20040016695A1 (en) * | 2002-07-26 | 2004-01-29 | Hallahan Dennis F. | Radial flow septic tank |
| JP2004230348A (en) * | 2003-01-31 | 2004-08-19 | Tsukishima Kikai Co Ltd | Filtration apparatus |
| US20140138327A1 (en) * | 2011-04-20 | 2014-05-22 | Hatch Associates Pty Ltd | Re-entrainment prevention apparatus |
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