JPH03270796A - Apparatus for purifying water area - Google Patents
Apparatus for purifying water areaInfo
- Publication number
- JPH03270796A JPH03270796A JP2070248A JP7024890A JPH03270796A JP H03270796 A JPH03270796 A JP H03270796A JP 2070248 A JP2070248 A JP 2070248A JP 7024890 A JP7024890 A JP 7024890A JP H03270796 A JPH03270796 A JP H03270796A
- Authority
- JP
- Japan
- Prior art keywords
- water
- water area
- aerator
- draft tube
- screw
- 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.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 84
- 238000005276 aerator Methods 0.000 claims abstract description 21
- 238000005273 aeration Methods 0.000 claims abstract description 9
- 238000013019 agitation Methods 0.000 claims description 4
- 238000000746 purification Methods 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 19
- 239000001301 oxygen Substances 0.000 abstract description 19
- 229910052760 oxygen Inorganic materials 0.000 abstract description 19
- 239000010865 sewage Substances 0.000 abstract description 8
- 238000003756 stirring Methods 0.000 abstract description 5
- 239000010410 layer Substances 0.000 description 14
- 239000002344 surface layer Substances 0.000 description 6
- 239000002351 wastewater Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000029553 photosynthesis Effects 0.000 description 4
- 238000010672 photosynthesis Methods 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000010840 domestic wastewater Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は汚濁した河川、池、湖沼、わんと等の水域の浄
化を効果的に処理する装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for effectively purifying polluted water bodies such as rivers, ponds, lakes, ponds, etc.
池、湖沼、わんと等の水域は一般に閉鎖状態にあり、又
周囲の雨水時には産業用あるいは家庭用廃水も流入する
。この為、汚濁物質が自然浄化能力以上に達すると水質
が汚濁する。この種水域の水質浄化を図るため、従来水
域内にエヤを吹き込み、このエヤリフト効果により水域
底層の水を水面上部に揚水し、水域の垂直方向の循環流
を発生せしめて浄化処理をしている。Water bodies such as ponds, lakes, ponds, etc. are generally closed, and industrial or domestic wastewater flows in when surrounding areas rainwater. For this reason, when pollutants exceed the natural purification ability, the water quality becomes polluted. In order to purify the water quality of this type of water area, conventionally, air is blown into the water area, and this air lift effect lifts water from the bottom layer of the water area to the top of the water surface, creating a vertical circulation flow in the water area and purifying it. .
水域全体をエヤリフト効果にて水を循環させるためには
多数の装置を必要とし、かつ相対的にその設置場所を定
める必要がある。しかし閉鎖水域においては装置の設置
場所が限定さ札水域全体にわたる均一な循環曝気が行わ
れていない。In order to circulate water throughout a body of water using the airlift effect, a large number of devices are required, and their relative installation locations must be determined. However, in closed water areas, the installation location of the equipment is limited, and uniform circulating aeration is not performed throughout the water area.
本発明はドラフトチューブと曝気機の併用によりエヤリ
フト効果を利用して水域の垂直方向と同時に水平方向の
撹拌を行って、効率よく水域内循環及び酸素の供給を可
能とすることを目的とする。An object of the present invention is to use the air lift effect in combination with a draft tube and an aerator to agitate the water body both vertically and horizontally, thereby enabling efficient circulation within the water body and supply of oxygen.
本発明は上述の目的を達成するためになしたもので、−
囃水域の所定位置に、１１１気、撹拌を同時に行える曝
気機の吸込側にほぼ垂直になした所要長のドラフトチュ
ーブをｉ２け、水域底層の水を揚水すると共Ｉご、水平
方向に水流を生じさせて、水域内を循環せしめて浄化す
ることを要旨とする。The present invention has been made to achieve the above-mentioned objects.
At a predetermined position in the basin, a draft tube of the required length is placed almost vertically on the suction side of an aerator that can simultaneously produce 111 air and agitation, to pump up water from the bottom layer of the basin and to also direct water flow in the horizontal direction. The purpose is to generate water and circulate it within the water area to purify it.
吸気と撹拌とを同時に行える曝気機の吸込側に垂直なる
ドラフトチューブを設けているため、曝気機の運転によ
り水域内の水はドラフトチューブの一端より吸水され曝
気機の吐出口より水域内へ放出される。この時、水はド
ラフトチューブ内を垂直方向に流れるので、水域底層の
水と水面部の水とは上方向から下流又は下方から上流へ
と水流が発生するとともに、曝気機から吐出される水は
水平又は横方向となっているので、水域内には循環水流
が発生することにより、底層の溶存酸素の低い水に対し
て曝気が行え効率的に酸素供給をして均一なる水質浄化
を行える。A vertical draft tube is installed on the suction side of the aerator, which can perform both air intake and agitation at the same time, so when the aerator is operated, water in the water area is absorbed from one end of the draft tube and released into the water area from the aerator's outlet. be done. At this time, water flows vertically in the draft tube, so the water at the bottom of the water body and the water at the water surface flow from the top to the downstream or from the bottom to the upstream, and the water discharged from the aerator Since it is horizontal or lateral, a circulating water flow is generated in the water area, which allows aeration of water with low dissolved oxygen in the bottom layer, efficiently supplies oxygen, and uniformly purifies the water quality.
以下本発明を図示の実施例にもとづいて説明する。 The present invention will be explained below based on the illustrated embodiments.
第１図は第１実施例を示し、 １は所要の浮力を有する
フロートで、このフロート１に汚水の曝気と撹拌を同時
に行える曝気機２を備えると共に、この曝気機２の吸込
側に垂直になした所要径と長さを有するドラフトチュー
ブ３を連結する。そしてこのドラフトチューブ３の安定
を図るために必要に応じ、このドラフトチューブ３にも
フロート４を設ける。FIG. 1 shows a first embodiment, in which 1 is a float having the required buoyancy, and this float 1 is equipped with an aerator 2 that can simultaneously aerate and agitate wastewater, and is installed vertically on the suction side of the aerator 2. The draft tubes 3 having the required diameter and length are connected. In order to stabilize the draft tube 3, a float 4 is also provided on the draft tube 3 as necessary.
ドラフトチューブ４はその下端をロート状に拡開せしめ
、水域底層の溶存酸素量の低い汚水を吸水できるように
なすもので、このチューブ長は水深等により予め定めら
れる。The draft tube 4 has its lower end expanded into a funnel shape so as to be able to absorb wastewater with a low amount of dissolved oxygen from the bottom layer of the water body, and the length of this tube is determined in advance based on the water depth and the like.
フロート１に支持される曝気機２は油圧又は電動モータ
２１にて接続された中空軸２２の先端にスクリュー２３
を固定し、このモータ及び軸をカバーにて覆い、水面上
方にある吸気口より大気の空気を吸入し、前記中空軸２
２内を流下させる。これはスクリュー２３の回動により
スクリュー先端側水中内に発生する負圧により吸気し、
水中に微細気泡として放出するようになす、またこのス
クリュー２３の外周部はドラフトチューブ４を接続した
ケーシング２４にて覆われ、この先端はスクリュー先端
と同方向をむき開口されている。The aerator 2 supported by the float 1 has a screw 23 at the tip of a hollow shaft 22 connected by a hydraulic or electric motor 21.
is fixed, the motor and shaft are covered with a cover, atmospheric air is taken in from the intake port above the water surface, and the hollow shaft 2 is fixed.
2 to flow down. This is caused by the negative pressure generated in the water at the tip of the screw due to the rotation of the screw 23.
The outer periphery of this screw 23 is covered with a casing 24 to which a draft tube 4 is connected, and the tip of this screw 23 is opened in the same direction as the tip of the screw.
従って、フロート付曝気機２を閉鎖水域に浮遊させると
スクリュー２３は水面より予め定めた深さの水中にある
。これは機械全体の重量とフロートの浮力との関係にて
予め定められている。曝気機２の運転によりスクリュー
先端に発生する負圧にて水はドラフトチューブ下端の水
域底層部より吸引され、該チューブ内を上昇し、ケーシ
ング２４内を経てスクリューにて再び曝気機横方向の水
域中へ放出（吐出）される。この時、水中の負圧にて空
気は中空軸を経て吸弓さ帳 スクリュー先端側へ微細気
泡となり、かつ汚水と混合して放出される。これにより
水域内には底層の汚水をドラフトチューブ内を揚水さ代
横方向へ放出されて循環水流が発生し、水域全体の汚
水の撹拌と曝気とが同時に行われ、水質の浄化が行われ
るものである。Therefore, when the float aerator 2 is floated in a closed water area, the screw 23 is located at a predetermined depth below the water surface. This is predetermined based on the relationship between the weight of the entire machine and the buoyancy of the float. Due to the negative pressure generated at the tip of the screw by the operation of the aerator 2, water is sucked from the bottom layer of the water area at the lower end of the draft tube, rises inside the tube, passes through the inside of the casing 24, and returns to the water area in the lateral direction of the aerator by the screw. It is released (discharged) into the body. At this time, due to the negative pressure in the water, the air passes through the hollow shaft and becomes microscopic bubbles toward the tip of the suction screw, and is mixed with wastewater and released. As a result, sewage from the bottom layer of the water area is pumped up inside the draft tube and released laterally, creating a circulating water flow, which simultaneously stirs and aerates the sewage throughout the water area, purifying the water quality. It is.
第２図に示すものは第２実施例で、曝気ｑａ２を水中の
底層部に設置し、これに垂直なドラフトチューブ３を接
続し、水面付近にまでチューブ先端を達せしめ、水面近
くの汚水を吸入するようになす。What is shown in Figure 2 is the second embodiment, in which the aeration qa2 is installed at the bottom of the water, a vertical draft tube 3 is connected to it, and the tip of the tube reaches near the water surface to remove wastewater near the water surface. Try to inhale.
このｉ１気機２は第１の実施例と同様に汚水を撹拌する
と共に吸気をもってＩＩ気も行えるようになしたもので
、上面に吸込口を有し、側方に吐出口を設けたＬ字形に
屈曲形成した整流筒２５内にスクリュー２６をおさめ、
このスクリュー２６を中空軸２７を介して水中モータ２
８にて回動させるようになし、かつ整流筒２５の吸込口
にドラフトチューブ３を接続し、下部を繋留索２９にて
固定する。そして曝気機２への吸気は水面上方任意位置
に設置されたコンプレッサその他の空気源３０より吸気
管３１を介して行うものである。Similar to the first embodiment, this i1 air machine 2 is designed to agitate wastewater and also perform 2 air intake using air intake, and is L-shaped with a suction port on the top and a discharge port on the side. The screw 26 is placed in the rectifying cylinder 25 which is bent to
This screw 26 is connected to the underwater motor 2 via the hollow shaft 27.
8, the draft tube 3 is connected to the suction port of the rectifying cylinder 25, and the lower part is fixed with the tethering cable 29. Air is taken into the aerator 2 through an intake pipe 31 from a compressor or other air source 30 installed at an arbitrary position above the water surface.
この実施例においては曝気機２の運転により汚水の撹拌
と曝気とが第１実施例と同様に発生する。しかしこの場
合、水域内の水はドラフトチューブ上端より水面表層部
より吸水し、 ドラフトチューブ内を流下し、整流筒よ
り底層横方向へ吐出され、水域内の水は第１実施例と上
下逆方向に発生する。いずれの実施例においても水域内
の汚水はその底層と水面層とは循環するものである。In this embodiment, agitation and aeration of sewage occur by operating the aerator 2 in the same manner as in the first embodiment. However, in this case, the water in the water area is absorbed from the water surface layer through the upper end of the draft tube, flows down inside the draft tube, and is discharged laterally from the rectifier tube to the bottom layer, and the water in the water area is flowed in the upside down direction compared to the first embodiment. occurs in In any of the embodiments, the wastewater in the water body circulates between the bottom layer and the surface layer.
湖沼等、富栄養化の進行した水域では、昼間は水域の表
層部で植物プランクトンによる光合成がさかんに行われ
、溶存酸素が高くなる。しかし、底層部ではプランクト
ンの光合成に必要な光が充分に届かず、溶存酸素が低い
。底層部で溶存酸素が欠乏すると窒素、燐、鉄、マンガ
ン等の栄養塩類が水中に溶出し、さらに富栄養化を進め
ることになる。In lakes and other eutrophic waters, photosynthesis by phytoplankton occurs actively in the surface layer of the water during the day, resulting in high dissolved oxygen levels. However, in the bottom layer, the light necessary for plankton photosynthesis does not reach enough, and dissolved oxygen is low. When dissolved oxygen is lacking in the bottom layer, nutrients such as nitrogen, phosphorus, iron, and manganese are leached into the water, further promoting eutrophication.
本装置により水域内の垂直方向の撹拌を行うことで表層
部の高い溶存酸素濃度の水を底層部に導き、前述の栄養
塩の溶出を防止することができる。By vertically stirring the water body using this device, water with a high dissolved oxygen concentration in the surface layer can be guided to the bottom layer, thereby preventing the above-mentioned leaching of nutrients.
夜間は光合成が行われないため、表層部においても溶存
ｉ１素濃度が低下するが、本装置により酸素供給が行わ
れるため、夜間でも底層部に高い溶存酸素濃度の水を導
くことが可能である。Since photosynthesis does not occur at night, the concentration of dissolved i1 elements decreases even in the surface layer, but since this device supplies oxygen, it is possible to guide water with a high dissolved oxygen concentration to the bottom layer even at night. .
また、酸素供給において、気相（気泡）から液相（水）
へのＭ素の移動は（１）式の基本式で表わされる。In addition, in oxygen supply, from the gas phase (bubbles) to the liquid phase (water)
The movement of M elements to is expressed by the basic equation (1).
ｄｃ／ｄｔ＝ＫＬａ （Ｃｓ−Ｃ）−（１）ｄｃ／ｄｔ
； 溶存酸素増加速度
Ｋ Ｌ ａＨ総括酸素移動係数
Ｃ８； 飽和溶存酸素濃度
Ｃ； 水中溶存酸素濃度
従って、酸素の移動はＣｓ−Ｃ１つまり酸素供給対象と
なる水の溶存酸素濃度が低く、Ｃｓとの差が大きい程、
効率よく行われることになる。本装置では底層部の溶存
酸素濃度の低い水に対して酸素供給を行うため、極めて
効率よく溶存酸素濃度を高めることが可能になる。dc/dt=KLa (Cs-C)-(1) dc/dt
; Dissolved oxygen increase rate K L aH overall oxygen transfer coefficient C8; Saturated dissolved oxygen concentration C; Dissolved oxygen concentration in water. The larger the difference, the
It will be done efficiently. This device supplies oxygen to water with a low dissolved oxygen concentration in the bottom layer, making it possible to increase the dissolved oxygen concentration extremely efficiently.
また、昼間光合成がさかんで、とくに曝気を行う必要が
無い時は空気供給を止め、撹拌のみ行い、夜間に空気供
給を合わせて行う方法もとれる。Alternatively, when photosynthesis is active during the day and there is no particular need for aeration, it is possible to stop the air supply and perform only stirring, and then to add air supply at night.
本発明によるときは、簡易な装置で水域の汚水が上下方
向及び横方向（水平方向）の両方向に水流を発生させて
撹拌できるので、水域内に表層部と底層部の循環が生じ
、効率的にかつ均一な浄化が行える利点を有する。According to the present invention, sewage in a water area can be stirred by generating water flows in both vertical and lateral (horizontal) directions using a simple device, so circulation between the surface layer and the bottom layer occurs in the water area, resulting in efficient circulation. It has the advantage of being able to perform cleansing quickly and uniformly.
第１図は第１実施例の説明図、第２図は第２実施例の説
明図、第３図は曝気機の一実施例の断面図である。
１．４はフロート、２は曝気１！Ｌ ３はドラフトチュ
ーブ。
第３図FIG. 1 is an explanatory diagram of the first embodiment, FIG. 2 is an explanatory diagram of the second embodiment, and FIG. 3 is a sectional view of one embodiment of the aerator. 1.4 is float, 2 is aeration 1! L 3 is a draft tube. Figure 3
Claims (1)
行える曝気機を設け、この曝気機の吸込側に上下方向に
伸びる所要長のドラフトチューブを設け、水域底層の水
を揚水すると共に、水平方向に水流を生じさせて、水域
内を循環せしめて浄化することを特徴とする水域浄化装
置。(1) An aerator that can perform aeration and agitation at the same time is installed at a predetermined position in a polluted water area, and a draft tube of the required length extending vertically is installed on the suction side of this aerator to pump up water from the bottom layer of the water area. A water purification device that generates water flow in a horizontal direction to circulate and purify a water body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2070248A JPH03270796A (en) | 1990-03-20 | 1990-03-20 | Apparatus for purifying water area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2070248A JPH03270796A (en) | 1990-03-20 | 1990-03-20 | Apparatus for purifying water area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03270796A true JPH03270796A (en) | 1991-12-02 |
Family
ID=13426070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2070248A Pending JPH03270796A (en) | 1990-03-20 | 1990-03-20 | Apparatus for purifying water area |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03270796A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102219302A (en) * | 2010-04-15 | 2011-10-19 | 上海欧保环境科技有限公司 | De-layering-type algae bloom eliminating method |
| CN102219312A (en) * | 2010-04-15 | 2011-10-19 | 上海欧保环境科技有限公司 | Layer disintegrating type circulating aeration technology |
-
1990
- 1990-03-20 JP JP2070248A patent/JPH03270796A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102219302A (en) * | 2010-04-15 | 2011-10-19 | 上海欧保环境科技有限公司 | De-layering-type algae bloom eliminating method |
| CN102219312A (en) * | 2010-04-15 | 2011-10-19 | 上海欧保环境科技有限公司 | Layer disintegrating type circulating aeration technology |
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