JPH10180287A - Sewage treating diffuser - Google Patents
Sewage treating diffuserInfo
- Publication number
- JPH10180287A JPH10180287A JP34617996A JP34617996A JPH10180287A JP H10180287 A JPH10180287 A JP H10180287A JP 34617996 A JP34617996 A JP 34617996A JP 34617996 A JP34617996 A JP 34617996A JP H10180287 A JPH10180287 A JP H10180287A
- Authority
- JP
- Japan
- Prior art keywords
- air
- vibrator
- sewage
- hollow body
- diffuser
- 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
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
- Treatment Of Biological Wastes In General (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、浄化槽などの汚水
処理装置内に設置される汚水処理用散気装置に関する。The present invention relates to a diffuser for sewage treatment installed in a sewage treatment device such as a septic tank.
【０００２】[0002]
【従来の技術】近年、し尿や生活雑廃水等の汚水を処理
する浄化槽としては、高度な処理能力を有し、常時安定
した処理水質が得られるものが要求されるようになって
きている。汚水を処理する方法には、細菌などの微生物
による汚濁物質分解作用を利用した生物学的処理方法が
あり、生物学的処理方法にも酸素を嫌う嫌気性微生物に
よって分解する嫌気性処理と、酸素を必要とする好気性
微生物による好気性処理の２種類があるが、上記のよう
な要求により的確に応えられるものとして、好気性処理
を行う好気性処理槽が主として用いられている。2. Description of the Related Art In recent years, as a septic tank for treating sewage such as human waste and household wastewater, a septic tank having a high treatment capacity and capable of constantly obtaining a stable treated water quality has been required. As a method of treating sewage, there is a biological treatment method utilizing the pollutant decomposition action of microorganisms such as bacteria.The anaerobic treatment in which the biological treatment method is decomposed by anaerobic microorganisms that dislike oxygen, There are two types of aerobic treatment using aerobic microorganisms that require aerobic treatment, but an aerobic treatment tank that performs aerobic treatment is mainly used as one that can more accurately meet the above-mentioned requirements.
【０００３】このような好気性処理槽では、槽内の好気
性微生物に酸素を安定して供給することが必要不可欠で
ある。そのためには、処理する汚水中に水没した状態の
散気装置を設置し、散気装置にブロアー等の空気供給源
から空気を送り、散気装置から汚水中に細かい気泡状に
した空気を吹き込んで曝気する構造のものが従来より用
いられている。In such an aerobic treatment tank, it is essential to supply oxygen stably to the aerobic microorganisms in the tank. To do so, install an air diffuser submerged in the wastewater to be treated, send air from an air supply source such as a blower to the air diffuser, and blow fine air into the wastewater from the air diffuser. A structure having an aeration structure is conventionally used.
【０００４】従来の散気装置は、空気を細かい気泡状に
するために、合成樹脂のペレットまたはビーズを加熱・
圧縮して成形したり、セラミックスの粒子を高温で焼成
することにより多数の空隙を形成した、多孔質の成形品
が使用されている。A conventional air diffuser heats and pellets synthetic resin pellets or beads in order to make air into fine bubbles.
BACKGROUND ART A porous molded product in which a large number of voids are formed by molding by compression or firing ceramic particles at a high temperature is used.
【０００５】しかしながら、このような従来の散気装置
は、運転時間の経過とともに空隙内で微生物が増殖して
空隙を閉塞し、目詰まりを起こすことがある。また、同
じ好気性処理槽を使用して嫌気性処理するような場合に
は、間欠曝気を行うので、散気装置への送気を停止した
時に汚水が空隙を通って散気装置内へ逆流し、その際に
汚水中の微小な固形物が空隙内に浸入して、同様に目詰
まりを起こすことがある。そして、目詰まりの結果、好
気性処理を行う場合の空気量が減少して、好気性処理が
不完全となることがある。[0005] However, in such a conventional air diffuser, there is a case where microorganisms proliferate in the gap as the operation time elapses, close the gap, and cause clogging. Also, in the case of performing anaerobic treatment using the same aerobic treatment tank, intermittent aeration is performed, so that when air supply to the diffuser is stopped, wastewater flows back into the diffuser through the gap. However, at this time, fine solids in the sewage may enter the gaps and similarly cause clogging. Then, as a result of the clogging, the amount of air when performing the aerobic treatment is reduced, and the aerobic treatment may be incomplete.
【０００６】そこで、このような汚水中の固形分による
空隙の閉塞を防止する手段として、特開平８−１１７６
号公報に、多孔質の筒の内面に接して多数の開口を有す
る円筒状の銅を主成分とする金属部材を充填した散気筒
が開示されている。この散気筒は、内面に嵌め込んだ金
属部材から発生する銅イオンの殺菌作用で散気筒の空隙
で増殖する微生物の成育を妨害することにより、散気筒
の目詰まりを防止しようとするものである。Therefore, as means for preventing the clogging of the void by the solid content in the sewage, Japanese Patent Application Laid-Open No. HEI 8-1-1176 has been proposed.
Japanese Patent Application Laid-Open Publication No. H11-157, discloses an air diffuser cylinder filled with a metal member containing copper as a main component and having a large number of openings in contact with the inner surface of a porous cylinder. This air diffusion cylinder is intended to prevent clogging of the air diffusion cylinder by obstructing the growth of microorganisms growing in the voids of the air diffusion cylinder due to the sterilizing action of copper ions generated from the metal member fitted on the inner surface. .
【０００７】しかしながら、特開平８−１１７６号公報
記載の散気筒は、浄化槽の運転時間の経過とともに金属
部材表面に形成される酸化皮膜や金属部材表面の汚れに
よって銅イオンの溶出量が次第に減少し、それとともに
殺菌効果が低下して微生物が増殖し、目詰まりを起こす
結果となる。However, in the diffuser described in Japanese Patent Application Laid-Open No. 8-1-1176, the elution amount of copper ions gradually decreases due to an oxide film formed on the surface of the metal member and contamination on the surface of the metal member as the operation time of the septic tank elapses. As a result, the bactericidal effect is reduced and the microorganisms multiply, resulting in clogging.
【０００８】また、銅は人体にとって有害であるため
に、排水基準によって放流量が厳しく規制されており、
汚水浄化に使用することは好ましくない。[0008] Further, since copper is harmful to the human body, the discharge rate is strictly regulated by drainage standards.
It is not preferable to use it for sewage purification.
【０００９】更に、好気性処理槽が接触曝気方式のよう
に汚水中のＭＬＳＳ（浮遊物質）が少量の場合はよい
が、活性汚泥方式のようにＭＬＳＳが数千ｍｇ／ｌとい
うように高濃度の場合には、曝気停止後の汚水の逆流に
よって空隙内に浸入した固形分は上記の方法では除去す
ることができず、容易に目詰まりを起こす。Further, it is good if the aerobic treatment tank has a small amount of MLSS (suspended matter) in the sewage as in the contact aeration system. However, as in the activated sludge system, the MLSS has a high concentration of several thousand mg / l. In the case of (1), the solid content that has entered the voids due to the backflow of the sewage water after the stop of the aeration cannot be removed by the above method, and clogging easily occurs.
【００１０】[0010]
【発明が解決しようとする課題】本発明は、上記のよう
な従来技術の問題点を解消し、長時間運転や曝気停止の
繰り返しによって気泡を噴出させる空隙や噴出孔が目詰
まりを起こし、目詰まりによって空気量が減少して好気
性処理が不完全となるようなことがなく、長期間にわた
り安定して好気性処理を行うことができ、しかも水質に
悪影響を与えることのない、汚水処理用散気装置を提供
することを目的とする。DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems of the prior art, and causes clogging of a void or an ejection hole for ejecting air bubbles by prolonged operation or repeated stop of aeration. For sewage treatment, aerobic treatment does not become incomplete due to clogging, and aerobic treatment can be performed stably for a long time without adversely affecting water quality. It is an object to provide a diffuser.
【００１１】[0011]
【課題を解決するための手段】上記の目的を達成するた
め、請求項１記載の本発明汚水処理用散気装置（以下単
に散気装置と称する）は、汚水中に設置され、汚水中に
空気を噴出して曝気を行う汚水処理用散気装置であっ
て、汚水中に設置された中空体の器壁に複数個のエア噴
出孔が穿設され、エア噴出孔にはエア噴出孔の軸方向に
振動する振動子が嵌め込まれており、振動子の軸はエア
噴出孔の軸方向に移動はするがエア噴出孔から抜き出し
不可能な状態で貫通していることを特徴とする。In order to achieve the above-mentioned object, an air diffuser for sewage treatment according to the present invention (hereinafter simply referred to as an air diffuser) is installed in sewage and is provided in sewage. A diffuser for sewage treatment that aerates by aerating air, wherein a plurality of air ejection holes are formed in a wall of a hollow body installed in the sewage. A vibrator that vibrates in the axial direction is fitted therein, and the vibrator is moved in the axial direction of the air ejection hole, but penetrates in a state where it cannot be extracted from the air ejection hole.
【００１２】請求項２記載の本発明散気装置は、エア噴
出孔が中空体の上側の器壁に穿設され、且つ振動子の比
重が汚水の比重より大きいことを特徴とする。According to a second aspect of the present invention, there is provided the air diffuser, wherein the air ejection hole is formed in the upper wall of the hollow body, and the specific gravity of the vibrator is larger than the specific gravity of the sewage.
【００１３】請求項３記載の本発明散気装置は、エア噴
出孔が中空体の下側の器壁に穿設され、且つ振動子の比
重が汚水の比重より小さいことを特徴とする。According to a third aspect of the present invention, there is provided the air diffuser, wherein the air ejection hole is formed in the lower wall of the hollow body, and the specific gravity of the vibrator is smaller than the specific gravity of sewage.
【００１４】請求項４記載の本発明散気装置は、振動子
の軸の少なくとも中空体の器壁の外側にある軸端部には
エア噴出孔を閉塞する蓋部が設けられていることを特徴
とする。According to a fourth aspect of the present invention, there is provided the air diffuser, wherein at least a shaft end of the vibrator shaft outside the hollow body wall is provided with a lid for closing the air ejection hole. Features.
【００１５】請求項５記載の本発明散気装置は、エア噴
出孔は中空体の外側へ向けて拡大するテーパー状に形成
され、蓋部の軸との接続部はエア噴出孔に密着するテー
パー状に形成されていることを特徴とする。According to a fifth aspect of the present invention, the air ejection hole is formed in a tapered shape expanding toward the outside of the hollow body, and a connection portion of the lid portion with the shaft is tapered to be in close contact with the air ejection hole. It is characterized by being formed in a shape.
【００１６】本発明において、エア噴出孔及び振動子の
軸の大きさは特に限定されるものではないが、処理され
る汚水中に酸素が効率よく溶解する気泡の大きさとする
ために、エア噴出孔の内寸は３ｍｍ乃至５０ｍｍ程度と
することが好ましい。また、エア噴出孔内で軸方向に自
由に移動することができるように、振動子の軸の太さは
エア噴出孔の内寸より１ｍｍ乃至１０ｍｍ程度小さくす
ることが好ましい。In the present invention, the size of the air ejection hole and the axis of the vibrator are not particularly limited, but the size of the air ejection hole is set so that oxygen can be efficiently dissolved in the treated wastewater. The inner size of the hole is preferably about 3 mm to 50 mm. Further, it is preferable that the thickness of the shaft of the vibrator is smaller by about 1 mm to 10 mm than the inner size of the air ejection hole so that the vibrator can freely move in the axial direction within the air ejection hole.
【００１７】また、空気がエア噴出孔から噴出する際
に、振動子がエア噴出孔内で軸方向によく振動して細か
い気泡が形成されるように、振動子の軸の長さは中空体
の器壁の厚さより３ｍｍ乃至１０ｍｍ程度長くすること
が好ましい。The length of the vibrator shaft is hollow so that the vibrator vibrates well in the axial direction inside the air discharge hole to form fine bubbles when air is blown out of the air discharge hole. It is preferable that the thickness is about 3 mm to 10 mm longer than the thickness of the vessel wall.
【００１８】振動子の材質は特に限定されるものではな
いが、汚水によって変質や劣化を生じにくい材質が望ま
しく、ポリ塩化ビニル、ポリエチレン、ポリプロピレン
等の合成樹脂製あるいは合成樹脂の発泡体製のもの、ア
ルミニウム、ステンレス鋼等の金属材料製のものなどが
挙げられる。なお、振動子の材質は、振動子の比重を汚
水の比重より大きくする場合、あるいは振動子の比重を
汚水の比重より小さくする場合に応じて選択することが
必要である。また、比重を小さくするために振動子を中
空構造としてもよい。The material of the vibrator is not particularly limited, but is desirably a material which is hardly deteriorated or deteriorated by sewage, and is made of a synthetic resin such as polyvinyl chloride, polyethylene, polypropylene or a foam of a synthetic resin. , Aluminum, stainless steel, and other metal materials. The material of the vibrator needs to be selected according to the case where the specific gravity of the vibrator is larger than the specific gravity of sewage or the case where the specific gravity of the vibrator is smaller than the specific gravity of sewage. Further, the vibrator may have a hollow structure in order to reduce the specific gravity.
【００１９】（作用）請求項１記載の本発明は、中空体
に空気を送ると、空気圧で振動子が中空体の内側から押
されることによって蓋部が中空体の器壁から離れ、エア
噴出孔と振動子の軸の間の隙間を通って空気が汚水中に
噴出される。その場合、振動子と汚水の比重の差及び空
気圧の関係でエア噴出孔の軸方向に振動し、細かい気泡
となって噴出されるために効率よく曝気がなされる。(Operation) According to the first aspect of the present invention, when air is sent to the hollow body, the vibrator is pushed from the inside of the hollow body by air pressure, so that the lid is separated from the wall of the hollow body, and air is ejected. Air is blown into the wastewater through a gap between the hole and the axis of the transducer. In this case, the air vibrates in the axial direction of the air ejection hole due to the difference between the specific gravity of the vibrator and the sewage and the air pressure, and is ejected as fine bubbles, so that aeration is efficiently performed.
【００２０】更に、振動子が振動することによってエア
噴出孔に汚水中の固形分が付着するのが防止される上、
たとえエア噴出孔に固形分が付着しても、振動子の振動
と振動に伴う摩擦によって固形分が除去される。Furthermore, the vibrator vibrates to prevent solid matter in the sewage from adhering to the air ejection holes.
Even if solids adhere to the air ejection holes, the solids are removed by the vibration of the vibrator and the friction caused by the vibration.
【００２１】請求項２記載の本発明は、振動子の比重が
汚水の比重より大きい場合に用いられるものであって、
中空体に空気を送らずに曝気を停止しているときには振
動子が沈んでいるが、中空体に空気を送って曝気してい
るときには、空気圧によって振動子が下側から押し上げ
られて振動し、空気が細かい気泡となって噴出され、効
率よく曝気がなされるとともに、汚水中の固形分がエア
噴出孔に付着するのが防止され、あるいはエア噴出孔に
付着しても、振動子の振動と摩擦によって除去される。The present invention according to claim 2 is used when the specific gravity of the vibrator is higher than the specific gravity of sewage,
The vibrator is sinking when aeration is stopped without sending air to the hollow body, but when sending air to the hollow body and aerating, the vibrator is pushed up from below by air pressure and vibrates, The air is jetted out as fine air bubbles, and is efficiently aerated.Also, the solid matter in the sewage is prevented from adhering to the air jet holes, or even if it adheres to the air jet holes, the vibration of the vibrator and Removed by friction.
【００２２】また、請求項３記載の本発明は、振動子の
比重が汚水の比重より小さい場合に用いられるものであ
って、中空体に空気を送らずに曝気を停止しているとき
には振動子が浮かんでいるが、中空体に空気を送って曝
気しているときには、空気圧によって振動子が上側から
押し下げられ蓋部も押し下げられて、空気が細かい気泡
となって噴出され、効率よく曝気がなされるとともに、
汚水中の固形分がエア噴出孔に付着するのが防止され、
あるいはエア噴出孔に付着しても、振動子の振動と摩擦
によって除去される。The present invention according to claim 3 is used when the specific gravity of the vibrator is smaller than the specific gravity of sewage, and when the aeration is stopped without sending air to the hollow body, However, when air is sent to the hollow body to aerate, the vibrator is pushed down from above by air pressure and the lid is also pushed down, and the air is ejected as fine air bubbles, and aeration is performed efficiently. Along with
Solid matter in the sewage is prevented from adhering to the air outlet,
Alternatively, even if it adheres to the air ejection hole, it is removed by vibration and friction of the vibrator.
【００２３】請求項４記載の本発明は、中空体へ空気を
送るのを止めて曝気を停止すると、水圧によって蓋部が
中空体の器壁に密着し、エア噴出孔を塞ぐので、汚水の
浸入が防止され、エア噴出孔の目詰まりは更に発生しに
くくなる。According to the fourth aspect of the present invention, when the air supply to the hollow body is stopped to stop the aeration, the lid is brought into close contact with the wall of the hollow body by the water pressure and closes the air ejection hole. Infiltration is prevented, and clogging of the air ejection holes is further reduced.
【００２４】請求項５記載の本発明は、中空体に空気を
送らずに曝気を停止しているときには、円錐面状のエア
噴出孔に蓋部の軸との円錐面状の接続部同士が広い面積
で密着し、エア噴出孔を塞ぐので、汚水の浸入が確実に
防止され、エア噴出孔の目詰まりは一層発生しにくくな
る。According to the fifth aspect of the present invention, when the aeration is stopped without sending air to the hollow body, the conical air connection hole and the conical surface connection portion with the shaft of the lid are connected to each other. Since the air ejection holes are in close contact with each other and close the air ejection holes, infiltration of sewage is reliably prevented, and the air ejection holes are less likely to be clogged.
【００２５】[0025]
【発明の実施の形態】以下、本発明の実施の形態につき
図面を参照しながら具体的に説明する。図１は本発明の
散気装置が設置されている浄化槽の断面図、図２は本発
明散気装置の一例の曝気運転中の状態を示す斜視図、図
３は図２に示す振動子の斜視図、図４は図２の要部の拡
大断面図、図５は曝気運転停止中の状態を示す要部の拡
大断面図である。なお、図２乃至図５に示す例は、振動
子の比重が汚水の比重より大きい場合のものである。Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a cross-sectional view of a septic tank in which an air diffuser of the present invention is installed, FIG. 2 is a perspective view showing a state of an example of the air diffuser of the present invention during an aeration operation, and FIG. 3 is a view of the vibrator shown in FIG. FIG. 4 is a perspective view, FIG. 4 is an enlarged cross-sectional view of a main part of FIG. 2, and FIG. 5 is an enlarged cross-sectional view of a main part showing a state in which the aeration operation is stopped. The example shown in FIGS. 2 to 5 is a case where the specific gravity of the vibrator is larger than the specific gravity of the sewage.
【００２６】図１に示す浄化槽１において、浄化槽本体
２は仕切板３、４によって流量調整槽５、嫌気性処理槽
６、及び好気性処理槽７の三つの槽に仕切られている。
仕切板４の上の方には嫌気性処理槽６と好気性処理槽７
の間をつなぐ連通口８が設けられており、流量調整槽５
と嫌気性処理槽６の間にはポンプを備えた汚水移送配管
９、好気性処理槽７と嫌気性処理槽６の間にも同様の汚
水移送配管１０が設けられている。In the septic tank 1 shown in FIG. 1, the septic tank main body 2 is divided into three tanks of a flow rate adjusting tank 5, an anaerobic treatment tank 6, and an aerobic treatment tank 7 by partition plates 3, 4.
An anaerobic treatment tank 6 and an aerobic treatment tank 7 are provided above the partition plate 4.
A communication port 8 is provided to connect between the
A sewage transfer pipe 9 having a pump is provided between the anaerobic treatment tank 6 and the anaerobic treatment tank 6, and a similar sewage transfer pipe 10 is provided between the aerobic treatment tank 7 and the anaerobic treatment tank 6.
【００２７】好気性処理槽７内の底部近くには本発明の
散気装置１１が設置され、浄化槽本体２の外にはブロア
ー１２が設置されていて、ブロアー１２から散気装置１
１へは空気を送るためのエア配管１３が設けられてい
る。An air diffuser 11 of the present invention is installed near the bottom in the aerobic treatment tank 7, and a blower 12 is installed outside the septic tank main body 2.
1 is provided with an air pipe 13 for sending air.
【００２８】また、好気性処理槽７内の散気装置１１の
上には、好気性処理槽７で処理された後の処理水から固
形分を分離するための分離膜１４が設けられ、分離膜１
４には固形分が分離された処理水をポンプ１５で吸い上
げて放流するための放流配管１６が設けられている。On the aeration device 11 in the aerobic treatment tank 7, a separation membrane 14 for separating solids from the treated water treated in the aerobic treatment tank 7 is provided. Membrane 1
4 is provided with a discharge pipe 16 for sucking up the treated water from which the solid content has been separated by the pump 15 and discharging the same.
【００２９】流量調整槽５に流入した未処理の汚水はこ
こに一時貯留された後、汚水移送配管９により嫌気性処
理槽６へ一定量が移送される。移送された汚水は嫌気性
処理槽６でＭＬＳＳの濃度が数千ｍｇ／ｌから１０，０
００ｍｇ／ｌ程度の嫌気状態で存在している活性汚泥に
より嫌気性処理された後、連通口８から好気性処理槽７
へ汚泥とともに流れこむ。The untreated sewage that has flowed into the flow control tank 5 is temporarily stored therein, and then is transferred to the anaerobic treatment tank 6 by a sewage transfer pipe 9. The transferred sewage is subjected to anaerobic treatment tank 6 to reduce the concentration of MLSS from several thousand mg / l to 10,000.
After being subjected to anaerobic treatment with activated sludge existing in an anaerobic state of about 00 mg / l, an aerobic treatment tank 7 is connected through a communication port 8.
Runs down with sludge.
【００３０】好気性処理槽７では、嫌気性処理後の汚水
は、ブロアー１２からエア配管１３を経て散気装置１１
へ送られた空気が、散気装置１１により多数の細かい気
泡状に噴出され、曝気されることによって好気性処理さ
れる。In the aerobic treatment tank 7, the sewage after the anaerobic treatment is supplied from the blower 12 through the air pipe 13 to the diffuser 11.
Is sent to the air diffuser 11 in the form of a number of fine bubbles, and is aerobically processed by aeration.
【００３１】好気性処理された処理水の一部は分離膜１
４により固液分離され、液体分だけがポンプ１５で吸い
上げられ、放流配管１６から外部へ放流されるととも
に、処理水の一部は汚泥とともに汚水移送配管１０から
嫌気性処理槽６へ還流されて繰り返し処理される。A part of the treated water subjected to the aerobic treatment is separated into the separation membrane 1
The liquid is separated into solid and liquid by the pump 4, only the liquid is sucked up by the pump 15, and discharged to the outside from the discharge pipe 16, and a part of the treated water is returned to the anaerobic treatment tank 6 from the sewage transfer pipe 10 together with the sludge. It is processed repeatedly.
【００３２】次に、図２乃至図５を参照して散気装置１
１について説明する。直方体状の中空体１１１の上側の
器壁１１２は外面が平坦且つ平滑に形成され、器壁１１
２には複数個（図２に示す例では１２個）のエア噴出孔
１１３が穿設されていて、各エア噴出孔１１３には振動
子１１４が嵌め込まれている。また、中空体１１１の一
端にはエア配管１３が接続されている。Next, the air diffuser 1 will be described with reference to FIGS.
1 will be described. The outer wall of the upper wall 112 of the rectangular parallelepiped hollow body 111 is formed flat and smooth,
2, a plurality (12 in the example shown in FIG. 2) of air ejection holes 113 are formed, and a vibrator 114 is fitted into each air ejection hole 113. Further, an air pipe 13 is connected to one end of the hollow body 111.
【００３３】振動子１１４は、器壁１１２を貫通する軸
部１１４１、軸部１１４１の一端で中空体１１１の外側
にある円盤状の蓋部１１４２、及び軸部１１４１の他端
で中空体１１１の内側にある三角形の板状の係止部１１
４３より構成されている。軸部１１４１の外径はエア噴
出孔１１３の内径よりやや小さく、軸部１１４１の長さ
は器壁１１２の厚さよりやや大きく形成されている。但
し図５に示すように蓋部１１４２の裏面が上側の器壁１
１２に当接しても、係止部１１４３の先端と下側の器壁
の間にはなお隙間がある寸法とされている。The vibrator 114 includes a shaft portion 1141 penetrating the container wall 112, a disc-shaped lid 1142 outside the hollow body 111 at one end of the shaft portion 1141, and a hollow body 111 at the other end of the shaft portion 1141. Triangular plate-shaped locking portion 11 inside
43. The outer diameter of the shaft 1141 is slightly smaller than the inner diameter of the air ejection hole 113, and the length of the shaft 1141 is slightly larger than the thickness of the container wall 112. However, as shown in FIG.
Even if it abuts on 12, there is still a gap between the tip of the locking portion 1143 and the lower vessel wall.
【００３４】蓋部１１４２の外径はエア噴出孔１１３を
完全に覆うことができる充分な大きさを有し、器壁１１
２の外面に当接する裏面（軸部１１４１との接続側）は
平坦且つ平滑な面に形成されている。The outer diameter of the lid 1142 is large enough to completely cover the air ejection hole 113, and
The back surface (the side connected to the shaft portion 1141) in contact with the outer surface of the second 2 is formed as a flat and smooth surface.
【００３５】また、係止部１１４３は振動子１１４がエ
ア噴出孔１１３から抜け出さない寸法に形成されてい
る。従って振動子１１４はエア噴出孔１１３に対し軸方
向に移動することはできるが、エア噴出孔１１３から抜
き出すことができない。The locking portion 1143 is formed in such a size that the vibrator 114 does not come out of the air ejection hole 113. Therefore, the vibrator 114 can move in the axial direction with respect to the air ejection hole 113, but cannot be extracted from the air ejection hole 113.
【００３６】次に、散気装置１１により好気性処理を行
う場合の作用について説明する。前記したように、上記
の例においては振動子１１４の比重が汚水の比重より大
きいので、曝気を開始する前には、図５に示すように、
振動子１１４が沈下した位置にあって、蓋部１１４２の
裏面が上側の器壁１１２の外面に当接し、更に水圧によ
って上側の器壁１１２に密着して、エア噴出孔１１３を
閉塞する。それにより汚水がエア噴出孔１１３に浸入す
るのが防止される。Next, the operation when the aerobic treatment is performed by the air diffuser 11 will be described. As described above, in the above example, since the specific gravity of the vibrator 114 is larger than the specific gravity of the sewage, before starting the aeration, as shown in FIG.
When the vibrator 114 is in the sunk position, the back surface of the lid 1142 abuts against the outer surface of the upper container wall 112, and further closes to the upper container wall 112 by water pressure to close the air ejection hole 113. This prevents sewage from entering the air ejection holes 113.
【００３７】次いで好気性処理を開始するためにエア配
管１３から中空体１１１へ空気を送ると、空気圧によっ
て振動子１１４が図４に示すように押し上げられ、蓋部
１１４２が器壁１１２の外面から離れ、且つ振動子１１
４に作用する重力、浮力、空気圧により振動子１１４が
エア噴出孔１１３の軸方向に上下に振動するので、空気
は細かい気泡となって汚水中に噴出し、汚水との接触面
積が大きいために効率よく曝気がなされる。Next, when air is sent from the air pipe 13 to the hollow body 111 to start the aerobic treatment, the vibrator 114 is pushed up by air pressure as shown in FIG. Away and vibrator 11
Since the vibrator 114 vibrates up and down in the axial direction of the air ejection hole 113 due to gravity, buoyancy, and air pressure acting on 4, the air is ejected as fine bubbles into the wastewater, and the contact area with the wastewater is large. Aeration is performed efficiently.
【００３８】また、振動子１１４の振動によってエア噴
出孔１１３や振動子１１４に汚水中の固形分が付着する
のが防止されるとともに、エア噴出孔１１３や振動子１
１４に汚水中の固形分が付着していても、振動子１１４
の振動とそれに伴う振動子１１４とエア噴出孔１１３の
接触により、付着していた固形分が除去される。Further, the vibration of the vibrator 114 prevents the solid content in the sewage from adhering to the air ejection holes 113 and the vibrator 114 and prevents the air ejection holes 113 and the vibrator 1 from adhering.
Even if the solids in the wastewater adhere to the
By vibrating the vibrator 114 and the contact between the vibrator 114 and the air ejection holes 113, the attached solids are removed.
【００３９】図６は振動子の他の例を示す斜視図であ
る。図６に示す振動子１１４ａは、図３に示す振動子１
１４の蓋部１１４２の代わりに、軸部１１４１ａと直角
方向の細い円筒状の頭部１１４３ａが設けられたもので
ある。なお、散気装置のその他の構成は上記のものと同
じである。FIG. 6 is a perspective view showing another example of the vibrator. The vibrator 114a shown in FIG. 6 is the same as the vibrator 1 shown in FIG.
In place of the lid 1142, a thin cylindrical head 1143a is provided in a direction perpendicular to the shaft 1141a. The other configurations of the air diffuser are the same as those described above.
【００４０】この振動子１１４ａを用いた散気装置の場
合、細い円筒状の頭部１１４３ａは蓋部のようにエア噴
出孔を覆って噴出孔へ汚水が浸入するのを防止できない
が、振動子１１４ａの振動によりエア噴出孔や振動子１
１４ａに汚水中の固形分が付着するのが防止され、また
付着していた固形分が除去される。In the case of the air diffuser using the vibrator 114a, the thin cylindrical head 1143a covers the air ejection hole like a lid and cannot prevent the infiltration of dirty water into the ejection hole. The air ejection hole and the vibrator 1 due to the vibration of 114a
The solids in the sewage are prevented from adhering to 14a, and the adhering solids are removed.
【００４１】図７及び図８は本発明散気装置の他の一例
を示し、図７は曝気運転中の状態を示す要部の拡大断面
図、図８は曝気運転停止中の状態を示す要部の拡大断面
図である。振動子１１４ｂの比重は汚水の比重より小さ
く、中空体１１１ｂの下側の器壁１１２ｂにエア噴出孔
１１３ｂが穿設され、且つ振動子１１４ｂの上下方向が
図２乃至図５に示す例と逆になっているほかは、図２乃
至図５に示すものと同じ構成である。FIGS. 7 and 8 show another example of the air diffuser of the present invention. FIG. 7 is an enlarged sectional view of a main part showing a state during the aeration operation, and FIG. It is an expanded sectional view of a part. The specific gravity of the vibrator 114b is smaller than the specific gravity of sewage, an air ejection hole 113b is formed in the lower container wall 112b below the hollow body 111b, and the vertical direction of the vibrator 114b is opposite to that shown in FIGS. The configuration is the same as that shown in FIGS.
【００４２】図７及び図８に示す構成の散気装置の作用
について説明する。振動子１１４ｂの比重は汚水の比重
より小さいので、曝気を開始する前には、図８に示すよ
うに振動子１１４ｂが浮上した位置にあって、蓋部１１
４２ｂの裏面が下側の器壁１１２ｂの外面に当接し、水
圧によって器壁１１２ｂに密着してエア噴出孔１１３ｂ
を閉塞する。その結果、汚水がエア噴出孔１１３ｂに浸
入するのが防止される。The operation of the air diffuser having the structure shown in FIGS. 7 and 8 will be described. Since the specific gravity of the vibrator 114b is smaller than the specific gravity of the sewage, before starting the aeration, as shown in FIG.
42b is in contact with the outer surface of the lower container wall 112b, and is brought into close contact with the container wall 112b by water pressure to form the air ejection hole 113b.
Close. As a result, sewage is prevented from entering the air ejection holes 113b.
【００４３】次いで好気性処理を開始するためにエア配
管から中空体１１１ｂへ空気を送ると、空気圧によって
振動子１１４ｂが図７に示すように押し下げられ、蓋部
１１４２ｂが器壁１１２ｂの外面から離れ、且つ振動子
１１４ｂに作用する重力、浮力、空気圧により振動子１
１４ｂがエア噴出孔１１３ｂの軸方向に上下に振動する
ために、空気は細かい気泡となって噴出し、効率よく曝
気がなされる。Next, when air is sent from the air pipe to the hollow body 111b to start the aerobic treatment, the vibrator 114b is pushed down by air pressure as shown in FIG. 7, and the lid 1142b is separated from the outer surface of the container wall 112b. The vibrator 1 is driven by gravity, buoyancy, and air pressure acting on the vibrator 114b.
Since the air 14b vibrates up and down in the axial direction of the air ejection hole 113b, the air is ejected as fine bubbles and is efficiently aerated.
【００４４】また、振動子１１４ａの振動によってエア
噴出孔１１３ｂや振動子１１４ｂに汚水中の固形分が付
着するのが防止されるとともに、エア噴出孔１１３ｂや
振動子１１４ｂに汚水中の固形分が付着していても、振
動子１１４ｂの振動とそれに伴う振動子１１４ｂとエア
噴出孔１１３ｂの接触により固形分が除去される。Also, the vibration of the vibrator 114a prevents the solids in the sewage from adhering to the air ejection holes 113b and the vibrator 114b, and the solids in the sewage to the air ejection holes 113b and the vibrator 114b. Even if it adheres, solids are removed by the vibration of the vibrator 114b and the accompanying contact between the vibrator 114b and the air ejection holes 113b.
【００４５】図９は本発明散気装置の更に他の一例にお
ける曝気運転中の状態を示す要部の拡大断面図、図１０
は曝気運転停止中の状態を示す要部の拡大断面図、図１
１は図９及び図１０に示す振動子の斜視図である。な
お、この例は振動子の比重が汚水の比重より大きい場合
のものである。FIG. 9 is an enlarged sectional view of a main part showing a state during an aeration operation in still another example of the air diffuser of the present invention.
FIG. 1 is an enlarged sectional view of a main part showing a state in which aeration operation is stopped, and FIG.
FIG. 1 is a perspective view of the vibrator shown in FIGS. 9 and 10. In this example, the specific gravity of the vibrator is larger than the specific gravity of sewage.
【００４６】中空体１１１ｃの上側の器壁１１２ｃに穿
設されたエア噴出孔１１３ｃは、内周面が中空体１１１
ｃの外側へ向けて拡大する円錐面状に形成され、且つ平
滑な表面状態を有する。The air ejection hole 113c formed in the upper wall 112c of the hollow body 111c has an inner peripheral surface formed of the hollow body 111c.
It is formed in the shape of a conical surface that expands toward the outside of c, and has a smooth surface state.
【００４７】エア噴出孔１１３ｃには図１１に示すよう
な振動子１１４ｃが嵌め込まれている。振動子１１４ｃ
の蓋部１１４２ｃの裏面はエア噴出孔１１３ｃの内周面
に密着する円錐面状に形成され、且つ平滑な表面状態を
有する。A vibrator 114c as shown in FIG. 11 is fitted in the air ejection hole 113c. Vibrator 114c
The rear surface of the lid 1142c is formed in a conical shape that is in close contact with the inner peripheral surface of the air ejection hole 113c, and has a smooth surface state.
【００４８】散気装置はこのような構造とされているた
めに、中空体１１１ｃに空気を送らずに曝気を停止して
いるときには、振動子１１４ｃが沈下して、エア噴出孔
１１３ｃの外周面と振動子１１４ｃの蓋部１１４２ｃの
裏面同士が広い面積で密着することができるので、エア
噴出孔１１３ｃへの汚水の浸入が一層確実に防止され
る。Since the air diffuser has such a structure, when aeration is stopped without sending air to the hollow body 111c, the vibrator 114c sinks and the outer peripheral surface of the air ejection hole 113c. And the back surface of the lid 1142c of the vibrator 114c can be in close contact with each other in a wide area, so that the infiltration of sewage into the air ejection holes 113c can be more reliably prevented.
【００４９】以下に本発明の具体的な実施例について説
明する。 （実施例１：振動子の比重＞汚水の比重）浄化槽は図１
に示す構造のもので、深さ２ｍの好気性処理槽７の水深
１．８ｍの位置に、図２乃至図５に示す構造の散気装置
１１が設置されているものを使用した。散気装置１１
は、中空体１１１の上側の器壁１１２の厚さが３ｍｍ
で、内径５ｍｍのエア噴出孔１１３が１２個穿設され、
エア噴出孔１１３にはポリ塩化ビニル製の振動子１１４
が嵌め込まれていて、軸部１１４１の外径は３ｍｍ、長
さは１０ｍｍ、蓋部１１４２の直径は１０ｍｍ、三角形
状の係止部１１４３の底辺長は７ｍｍ、厚さは２ｍｍで
ある。Hereinafter, specific embodiments of the present invention will be described. (Example 1: Specific gravity of oscillator> Specific gravity of sewage)
The aerobic treatment tank 7 having a depth of 2 m was provided with an air diffuser 11 having a structure shown in FIGS. 2 to 5 at a position of 1.8 m in water depth. Air diffuser 11
Means that the thickness of the upper container wall 112 of the hollow body 111 is 3 mm
Then, 12 air ejection holes 113 having an inner diameter of 5 mm are formed,
A vibrator 114 made of polyvinyl chloride is provided in the air ejection hole 113.
The outer diameter of the shaft portion 1141 is 3 mm, the length is 10 mm, the diameter of the lid portion 1142 is 10 mm, the base length of the triangular locking portion 1143 is 7 mm, and the thickness is 2 mm.
【００５０】嫌気性処理槽６で予め所定の嫌気性処理を
行った汚水を、好気性処理槽７に移送し、濃度８０００
〜１２０００ｍｇ／ｌの活性汚泥存在下で、散気装置１
１から３０ｌ／分の空気を細かい気泡状にして６０分間
噴出・曝気して好気性処理を行い、次いで７０分間曝気
を停止する運転を６か月間連続して行った。この間、曝
気運転時のブロアーの圧力及び送風量を計測した。The sewage which has been subjected to a predetermined anaerobic treatment in the anaerobic treatment tank 6 is transferred to the aerobic treatment tank 7 and has a concentration of 8,000.
Aeration device 1 in the presence of ~ 12000 mg / l activated sludge
Aerobic treatment was performed by blowing air from 1 to 30 l / min in the form of fine bubbles and aerating for 60 minutes, and then stopping the aeration for 70 minutes, followed by a continuous operation for 6 months. During this time, the pressure of the blower and the amount of air blow during the aeration operation were measured.
【００５１】その結果、ブロアーの圧力は０．２ｋｇｆ
／ｃｍ2 、送風量は３０ｌ／分と、運転開始時の値とほ
とんど変わりなく一定に維持されていて、安定した曝気
を続けることができた。また、エア噴出孔１１３が細菌
などの微生物により閉塞されて目詰まりを起こすことな
く、またエア噴出孔１１３への汚水の逆流も見られなか
った。As a result, the pressure of the blower was 0.2 kgf
/ Cm 2 , the amount of air blown was 30 l / min, which was kept constant, almost unchanged from the value at the start of operation, and stable aeration could be continued. In addition, the air ejection holes 113 were not blocked by microorganisms such as bacteria to cause clogging, and no backflow of sewage to the air ejection holes 113 was observed.
【００５２】（実施例２：振動子の比重＞汚水の比重）
頭部１１４３ａの直径３ｍｍ、長さ１０ｍｍの図６に示
すような振動子１１４が嵌め込まれた散気装置を使用し
た以外は、図１に示す浄化槽１と同じ構成の浄化槽を使
用し、実施例１と同じ方法で曝気及び曝気を停止する運
転を行った。(Example 2: Specific gravity of vibrator> Specific gravity of sewage)
A septic tank having the same configuration as the septic tank 1 shown in FIG. 1 was used, except that an air diffuser having a head 1143a having a diameter of 3 mm and a length of 10 mm and having a vibrator 114 as shown in FIG. 6 was used. Aeration and the operation of stopping the aeration were performed in the same manner as in 1.
【００５３】その結果、ブロアーの圧力は０．２ｋｇｆ
／ｃｍ2 、送風量は３０ｌ／分と、運転開始時の値とほ
とんど変わりなく一定に維持されていて、安定して曝気
を続けることができた。また、エア噴出孔は細菌などの
微生物により閉塞されて目詰まりを起こすことがなかっ
た。As a result, the pressure of the blower was 0.2 kgf
/ Cm 2 , the amount of air blown was 30 l / min, which was kept constant, almost unchanged from the value at the start of operation, and the aeration could be stably continued. Further, the air outlet was not clogged by microorganisms such as bacteria and clogged.
【００５４】（実施例３：振動子の比重＜汚水の比重）
図７及び図８に示すような、中空体１１１ｂ下側の器壁
１１２ｂにエア噴出孔１１３ｂが穿設され、ポリエチレ
ン製の振動子１１４ｂが嵌め込まれた散気装置を使用し
た以外は、図１に示す浄化槽１と同じ構成の浄化槽を使
用し、実施例１と同じ方法で曝気及び曝気を停止する運
転を行った。(Example 3: Specific gravity of vibrator <specific gravity of sewage)
As shown in FIGS. 7 and 8, except that an air blowing hole 113b is formed in a vessel wall 112b below the hollow body 111b and an air diffuser in which a vibrator 114b made of polyethylene is fitted is used. The purification tank 1 having the same configuration as the purification tank 1 shown in FIG. 1 was used, and aeration and the operation of stopping the aeration were performed in the same manner as in Example 1.
【００５５】その結果、ブロアーの圧力は０．２ｋｇｆ
／ｃｍ2 、送風量は３０ｌ／分と運転開始時の値とほと
んど変わりなく一定に維持されていて、安定して曝気を
続けることができた。また、エア噴出孔１１３ｂは細菌
などの微生物により目詰まりを起こすことがなかった。As a result, the pressure of the blower was 0.2 kgf
/ Cm 2 , and the air flow rate was maintained at 30 l / min, which was almost the same as the value at the start of the operation, and the aeration could be stably continued. Further, the air ejection holes 113b did not clog with microorganisms such as bacteria.
【００５６】（実施例４：振動子の比重＞汚水の比重）
図９乃至図１０に示すようなエア噴出孔１１３ｃに、図
１１に示すようなポリ塩化ビニル製の振動子１１４ｃが
嵌め込まれた散気装置を使用した以外は、図１に示す浄
化槽１と同じ構成の浄化槽を使用し、実施例１と同じ方
法で曝気及び曝気を停止する運転を行った。(Example 4: Specific gravity of vibrator> Specific gravity of sewage)
Same as the septic tank 1 shown in FIG. 1 except that an air diffuser in which a vibrator 114c made of polyvinyl chloride as shown in FIG. 11 is fitted into the air ejection hole 113c as shown in FIGS. Using the septic tank having the configuration, aeration and an operation of stopping the aeration were performed in the same manner as in Example 1.
【００５７】なお、エア噴出孔１１３ｃは最少部の内径
５ｍｍから外側へ向けて４５°方向に拡大する円錐面状
の内周面を持ち、振動子１１４ｃは直径３ｍｍ、長さ１
０ｍｍの軸部１１４１ｃの一端部に、噴出孔１１３ｃの
円錐面状の内周面に密着する裏面が形成されているもの
である。The air ejection hole 113c has a conical inner peripheral surface extending in the direction of 45 ° from the minimum inner diameter of 5 mm toward the outside, and the vibrator 114c has a diameter of 3 mm and a length of 1 mm.
A back surface that is in close contact with the conical inner peripheral surface of the ejection hole 113c is formed at one end of the 0 mm shaft portion 1141c.
【００５８】上記運転の結果、ブロアーの圧力は０．２
ｋｇｆ／ｃｍ2 、送風量は３０ｌ／分と運転開始時の値
とほとんど変わりなく一定に維持されていて、安定して
曝気を続けることができた。また、エア噴出孔１１３ｂ
は細菌などの微生物により目詰まりを起こすことがなか
った。As a result of the above operation, the pressure of the blower was 0.2
kgf / cm 2 , the air flow rate was 30 l / min, which was almost the same as the value at the start of the operation, and was kept constant, and the aeration could be continued stably. Also, the air ejection holes 113b
Did not cause clogging by microorganisms such as bacteria.
【００５９】（比較例１）散気装置として、ポリプロピ
レン樹脂のペレットを加熱圧縮して成形した、図１２に
示すような外径３０ｍｍ、内径１８ｍｍ、長さ４００ｍ
ｍの多孔質の管状成形品２０を使用した以外は、図１に
示す浄化槽１と同じ構成の浄化槽を使用し、実施例１と
同じ方法で曝気及び曝気を停止する操作を行った。(Comparative Example 1) As a diffuser, a polypropylene resin pellet was formed by heating and compressing, and the outer diameter was 30 mm, the inner diameter was 18 mm, and the length was 400 m as shown in FIG.
Except for using the m-shaped porous tubular molded article 20, a septic tank having the same configuration as the septic tank 1 shown in FIG. 1 was used, and the aeration and the operation of stopping the aeration were performed in the same manner as in Example 1.
【００６０】その結果、運転開始直後のブロアーの圧力
は０．２ｋｇｆ／ｃｍ2 であったものが、２日後には
０．３ｋｇｆ／ｃｍ2 に上昇し、送気量は運転開始直後
３０ｌ／分であったものが、８ｌ／分に減少した。更
に、散気装置を引き上げて多孔質の管状成形品を観察し
たところ、図１２及び図１３に示すように管状成形品２
０の細孔に汚泥が浸入し、閉塞していることが確認され
た。[0060] As a result, those pressure blower immediately after the start of operation was 0.2 kgf / cm 2 it is, after two days increased to 0.3 kgf / cm 2, feed amount immediately after start of operation 30l / min Was reduced to 8 l / min. Further, when the air diffuser was pulled out and the porous tubular molded product was observed, as shown in FIGS.
It was confirmed that the sludge entered the pores of No. 0 and was closed.
【００６１】（比較例２）散気装置として、外径１８ｍ
ｍ、内径１３ｍｍ、長さ４００ｍｍの硬質塩化ビニル管
の管壁に、直径５ｍｍの孔を円周方向に対角に２箇所、
長さ方向にピッチ３０ｍｍで千鳥状に穿設したものを使
用した以外は、図１に示す浄化槽１と同じ構成の浄化槽
を使用し、実施例１と同じ方法で曝気及び曝気を停止す
る操作を行った。(Comparative Example 2) As an air diffuser, an outer diameter of 18 m
m, a bore of 5 mm in diameter, two diagonally in the circumferential direction on the wall of a rigid vinyl chloride pipe of 13 mm in inner diameter and 400 mm in length,
Except for using a staggered perforation with a pitch of 30 mm in the length direction, a septic tank having the same configuration as the septic tank 1 shown in FIG. 1 was used, and aeration and the operation of stopping aeration were performed in the same manner as in Example 1. went.
【００６２】その結果、運転開始直後のブロアーの圧力
は０．２ｋｇｆ／ｃｍ2 であったが、１か月後には０．
２５ｋｇｆ／ｃｍ2 に上昇した。また送気量は運転開始
直後３０ｌ／分であったものが、１か月後には２５ｌ／
分に減少した。更に管状成形品のエアを噴出する孔の数
が約７０％に減少し、約３０％は汚泥により閉塞されて
空気が噴出されていなかった。As a result, the pressure of the blower immediately after the start of operation was 0.2 kgf / cm 2 , but after one month, the pressure was 0.2 kgf / cm 2 .
It increased to 25 kgf / cm 2 . The air supply amount was 30 l / min immediately after the start of operation, but was increased to 25 l / min after one month.
Reduced to a minute. Further, the number of holes for jetting air of the tubular molded article was reduced to about 70%, and about 30% was blocked by sludge and air was not jetted.
【００６３】[0063]
【効果】以上の説明で明らかなように、請求項１記載の
本発明は、中空体に空気を送ると振動子がエア噴出孔の
軸方向に振動し、細かい気泡となって噴出されるために
効率よく曝気がなされる。更に、エア噴出孔に汚水中の
固形分が付着するのが防止される上、たとえエア噴出孔
に固形分が付着しても、振動子の振動と摩擦によって固
形分が除去されるので、エア噴出孔の目詰まりが防止さ
れ、長期にわたって安定した好気性処理を行うことがで
きる。また銅のような有害な重金属を使用しないので、
水質に悪影響を与えることがない。As apparent from the above description, according to the first aspect of the present invention, when air is sent to the hollow body, the vibrator vibrates in the axial direction of the air ejection hole and is ejected as fine bubbles. Aeration is performed efficiently. Further, the solids in the wastewater are prevented from adhering to the air ejection holes, and even if the solids adhere to the air ejection holes, the solids are removed by vibration and friction of the vibrator. Clogging of the ejection holes is prevented, and stable aerobic treatment can be performed for a long period of time. Also, because it does not use harmful heavy metals such as copper,
Does not adversely affect water quality.
【００６４】請求項２記載の本発明は、振動子の比重が
汚水の比重より大きい場合に用いられることによって、
上記と同じ効果が得られる。The present invention according to claim 2 is used when the specific gravity of the vibrator is higher than the specific gravity of sewage,
The same effect as above can be obtained.
【００６５】請求項３記載の本発明は、振動子の比重が
汚水の比重より小さい場合に用いられることによって、
上記と同じ効果が得られる。The present invention according to claim 3 is used when the specific gravity of the vibrator is smaller than the specific gravity of sewage,
The same effect as above can be obtained.
【００６６】請求項４記載の本発明は、中空体へ空気を
送るのを止めると、水圧によって蓋部が中空体の器壁に
密着し、汚水がエア噴出孔から浸入するのが防止される
ので、エア噴出孔の目詰まりがより発生しにくく、長期
にわたってより安定した好気性処理を行うことができ
る。According to the fourth aspect of the present invention, when the supply of air to the hollow body is stopped, the lid is brought into close contact with the wall of the hollow body due to the water pressure, thereby preventing infiltration of sewage from the air ejection hole. Therefore, clogging of the air ejection holes is less likely to occur, and more stable aerobic treatment can be performed over a long period of time.
【００６７】請求項５記載の本発明は、中空体へ空気を
送るのを止めると、円錐面状のエア噴出孔と蓋部の円錐
面状の裏面とが広い面積で密着し、汚水がエア噴出孔に
浸入するのが確実に防止されるので、エア噴出孔の目詰
まりは一層発生しにくく、長期にわたって一層安定した
好気性処理を行うことができる。According to a fifth aspect of the present invention, when the air is stopped from being sent to the hollow body, the conical air ejection hole and the conical rear surface of the lid come into close contact with each other over a wide area, and contaminated water is removed from the air. Since the intrusion into the ejection holes is reliably prevented, clogging of the air ejection holes is less likely to occur, and more stable aerobic treatment can be performed over a long period of time.
【図１】本発明散気装置が設置されている浄化槽の断面
図。FIG. 1 is a sectional view of a septic tank in which an air diffuser of the present invention is installed.
【図２】本発明散気装置の一例の曝気運転中の状態を示
す斜視図。FIG. 2 is a perspective view showing a state during an aeration operation of an example of the air diffuser of the present invention.
【図３】図２に示す散気装置の振動子の斜視図。FIG. 3 is a perspective view of a vibrator of the air diffuser shown in FIG. 2;
【図４】図２に示す散気装置の要部拡大断面図。FIG. 4 is an enlarged sectional view of a main part of the air diffuser shown in FIG. 2;
【図５】図４に示す散気装置の曝気運転停止中の状態を
示す要部拡大断面図。FIG. 5 is an enlarged sectional view of a main part showing a state where the aeration operation of the air diffuser shown in FIG. 4 is stopped.
【図６】振動子の他の例を示す斜視図。FIG. 6 is a perspective view showing another example of the vibrator.
【図７】本発明散気装置の他の一例の曝気運転中の状態
を示す要部拡大断面図。FIG. 7 is an enlarged sectional view of a main part showing a state during an aeration operation of another example of the air diffuser of the present invention.
【図８】図７に示す散気装置の曝気運転停止中の状態を
示す要部拡大断面図。8 is an enlarged sectional view of a main part showing a state where the aeration operation of the air diffuser shown in FIG. 7 is stopped.
【図９】本発明散気装置の更に他の一例の曝気運転中の
状態を示す要部拡大断面図。FIG. 9 is an enlarged sectional view of a main part showing a state during aeration operation of still another example of the air diffuser of the present invention.
【図１０】図９に示す散気装置の曝気運転停止中の状態
を示す要部拡大断面図。10 is an enlarged sectional view of a main part showing a state where the aeration operation of the air diffuser shown in FIG. 9 is stopped.
【図１１】図９に示す散気装置の振動子の斜視図。FIG. 11 is a perspective view of a vibrator of the air diffuser shown in FIG. 9;
【図１２】従来の散気装置における６か月運転後の目詰
まり状態を示す断面図。FIG. 12 is a cross-sectional view showing a clogged state after six months of operation in a conventional air diffuser.
【図１３】図１２の一部拡大断面図。13 is a partially enlarged sectional view of FIG.
１ 浄化
槽 ７ 好気
性処理槽 １１ 散
気装置 １１１，１１１ｂ，１１１ｃ 中空
体 １１２，１１２ｂ，１１２ｃ 器壁 １１３，１１３ｂ，１１３ｃ エア
噴出孔 １１４，１１４ａ，１１４ｂ，１１４ｃ 振動
子 １１４１，１１４１ａ，１１４１ｂ，１１４１ｃ 軸部 １１４２，１１４２ｂ，１１４２ｃ 蓋部 １１４３，１１４３ａ，１１４３ｂ，１１４３ｃ 係止
部 １２ ブ
ロアー １３ エ
ア配管DESCRIPTION OF SYMBOLS 1 Septic tank 7 Aerobic treatment tank 11 Air diffuser 111, 111b, 111c Hollow body 112, 112b, 112c Device wall 113, 113b, 113c Air ejection hole 114, 114a, 114b, 114c Vibrator 1141, 1141a, 1141b, 1141c Part 1142, 1142b, 1142c Lid part 1143, 1143a, 1143b, 1143c Lock part 12 Blower 13 Air piping
Claims (5)
して曝気を行う汚水処理用散気装置であって、汚水中に
設置された中空体の器壁に複数個のエア噴出孔が穿設さ
れ、エア噴出孔にはエア噴出孔の軸方向に振動する振動
子が嵌め込まれており、振動子の軸はエア噴出孔の軸方
向に移動はするがエア噴出孔から抜き出し不可能な状態
で貫通していることを特徴とする汚水処理用散気装置。An air diffuser for sewage treatment installed in sewage and discharging air into the sewage to perform aeration, wherein a plurality of air ejection holes are formed in a wall of a hollow body installed in the sewage. A vibrator that vibrates in the axial direction of the air ejection hole is fitted in the air ejection hole, and the axis of the vibrator moves in the axial direction of the air ejection hole but cannot be extracted from the air ejection hole. An air diffuser for sewage treatment, characterized in that the air diffuser penetrates in an appropriate state.
され、且つ振動子の比重が汚水の比重より大きいことを
特徴とする請求項１記載の汚水処理用散気装置。2. The air diffuser for sewage treatment according to claim 1, wherein an air ejection hole is formed in the upper wall of the hollow body, and a specific gravity of the vibrator is larger than a specific gravity of the sewage.
され、且つ振動子の比重が汚水の比重より小さいことを
特徴とする請求項１記載の汚水処理用散気装置。3. The air diffuser for sewage treatment according to claim 1, wherein the air ejection hole is formed in a lower wall of the hollow body, and a specific gravity of the vibrator is smaller than a specific gravity of the sewage.
外側にある軸端部にはエア噴出孔を閉塞する蓋部が設け
られていることを特徴とする請求項１、２もしくは３記
載の汚水処理用散気装置。4. A lid for closing an air ejection hole is provided at least at a shaft end of a shaft of a vibrator outside a wall of a hollow body. A diffuser for sewage treatment as described in the above.
する円錐面状に形成され、蓋部の軸との接続部はエア噴
出孔に密着する円錐面状に形成されていることを特徴と
する請求項４記載の汚水処理用散気装置。5. The air ejection hole is formed in a conical shape expanding toward the outside of the hollow body, and a connection portion of the lid portion with the shaft is formed in a conical shape in close contact with the air ejection hole. The air diffuser for sewage treatment according to claim 4, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34617996A JPH10180287A (en) | 1996-12-25 | 1996-12-25 | Sewage treating diffuser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34617996A JPH10180287A (en) | 1996-12-25 | 1996-12-25 | Sewage treating diffuser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10180287A true JPH10180287A (en) | 1998-07-07 |
Family
ID=18381653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34617996A Pending JPH10180287A (en) | 1996-12-25 | 1996-12-25 | Sewage treating diffuser |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10180287A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003117583A (en) * | 2001-10-12 | 2003-04-22 | Kobe Steel Ltd | Bioreaction chamber and agitating method for the same |
| KR100430723B1 (en) * | 2000-11-21 | 2004-05-10 | 주식회사 파이닉스알엔디 | Dxygen Supplying Apparatus for Aerobe Purifying Fac.lities |
| KR100555627B1 (en) * | 2005-09-13 | 2006-03-03 | 송기수 | Downward type bubble apparatus |
| JP2007196091A (en) * | 2006-01-24 | 2007-08-09 | Sumitomo Heavy Ind Ltd | Air diffuser |
| JP2008194680A (en) * | 2007-01-18 | 2008-08-28 | Asahi Kasei Chemicals Corp | Membrane separation unit |
| KR200453443Y1 (en) * | 2009-05-14 | 2011-05-09 | 코스맥 주식회사 | Appratus for improving water-quality |
| CN105129971A (en) * | 2015-07-13 | 2015-12-09 | 江苏二泉环保集团有限公司 | Micro-pore aerator |
| CN117164174A (en) * | 2023-11-01 | 2023-12-05 | 智奇铁路设备有限公司 | Cutting fluid scrap iron filtering device of grinding machine tool |
-
1996
- 1996-12-25 JP JP34617996A patent/JPH10180287A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100430723B1 (en) * | 2000-11-21 | 2004-05-10 | 주식회사 파이닉스알엔디 | Dxygen Supplying Apparatus for Aerobe Purifying Fac.lities |
| JP2003117583A (en) * | 2001-10-12 | 2003-04-22 | Kobe Steel Ltd | Bioreaction chamber and agitating method for the same |
| KR100555627B1 (en) * | 2005-09-13 | 2006-03-03 | 송기수 | Downward type bubble apparatus |
| JP2007196091A (en) * | 2006-01-24 | 2007-08-09 | Sumitomo Heavy Ind Ltd | Air diffuser |
| JP2008194680A (en) * | 2007-01-18 | 2008-08-28 | Asahi Kasei Chemicals Corp | Membrane separation unit |
| KR200453443Y1 (en) * | 2009-05-14 | 2011-05-09 | 코스맥 주식회사 | Appratus for improving water-quality |
| CN105129971A (en) * | 2015-07-13 | 2015-12-09 | 江苏二泉环保集团有限公司 | Micro-pore aerator |
| CN117164174A (en) * | 2023-11-01 | 2023-12-05 | 智奇铁路设备有限公司 | Cutting fluid scrap iron filtering device of grinding machine tool |
| CN117164174B (en) * | 2023-11-01 | 2024-02-06 | 智奇铁路设备有限公司 | Cutting fluid scrap iron filtering device of grinding machine tool |
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