JP2000167576A - Septic tank - Google Patents
Septic tankInfo
- Publication number
- JP2000167576A JP2000167576A JP10348722A JP34872298A JP2000167576A JP 2000167576 A JP2000167576 A JP 2000167576A JP 10348722 A JP10348722 A JP 10348722A JP 34872298 A JP34872298 A JP 34872298A JP 2000167576 A JP2000167576 A JP 2000167576A
- Authority
- JP
- Japan
- Prior art keywords
- tank
- treated water
- nitrification
- disinfection
- discharge pipe
- 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
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Treatment Of Biological Wastes In General (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、浄化槽に関する。The present invention relates to a septic tank.
【0002】[0002]
【従来の技術】従来、浄化槽に設計量以上の処理水の流
入があった場合、夾雑物除去槽を溢れた処理水は、膜分
離装置が入っている硝化槽までオーバーフローしてしま
う場合がある。このように、一時的に大量の処理水が硝
化槽に流入すると、活性汚泥の量をコントロールして処
理していた硝化槽が処理できなくなる。そこで、処理水
を夾雑物除去槽からオーバーフローさせて直接消毒槽へ
移流させる放流管を設けて、硝化槽の処理能力を安定さ
せる必要がある。その際に、放流管を浄化槽の槽本体内
を通すと槽内を分割している隔壁を貫通しなければなら
なくなり、隔壁部のシール等の面倒な処理が必要にな
る。2. Description of the Related Art Heretofore, when the treated water has flowed into a septic tank in an amount larger than a designed amount, the treated water overflowing the impurity removing tank sometimes overflows to a nitrification tank containing a membrane separation device. . As described above, when a large amount of treated water temporarily flows into the nitrification tank, the nitrification tank that has been processing by controlling the amount of activated sludge cannot be processed. Therefore, it is necessary to stabilize the processing capacity of the nitrification tank by providing a discharge pipe that allows the treated water to overflow from the contaminant removal tank and flow directly to the disinfection tank. At this time, if the discharge pipe is passed through the tank body of the septic tank, it must penetrate the partition that divides the inside of the tank, and a troublesome treatment such as sealing of the partition is required.
【0003】[0003]
【発明が解決しようとする課題】上記のように一時的に
大量の処理水が硝化槽に流入すると、硝化槽が活性汚泥
の量を処理できなくなると言った問題があった。As described above, there has been a problem that when a large amount of treated water temporarily flows into the nitrification tank, the nitrification tank cannot treat the amount of activated sludge.
【0004】本発明は、上記のこのような問題点に着眼
してなされたものであり、その目的は、一時的に多量の
処理水が流入しても処理能力を維持できる浄化槽を提供
するものである。[0004] The present invention has been made in view of the above-mentioned problems, and an object thereof is to provide a septic tank capable of maintaining the treatment capacity even when a large amount of treated water flows in temporarily. It is.
【0005】[0005]
【課題を解決するための手段】請求項1記載の本発明の
浄化槽は、処理水が流入する流入口が設けられ、夾雑物
をろ過して除去する夾雑物除去槽と、脱窒槽と、硝化槽
とが上端が最高水位以上になされた隔壁でそれぞれ分画
されてなる浄化槽であって、夾雑物除去槽と、脱窒槽と
の処理水の移送はエアリフトポンプでなされ、脱窒槽と
硝化槽との処理水の移送は脱窒槽と硝化槽との間に設け
られた移流口から移流され、硝化槽から脱窒槽への循環
流はエアリフトポンプでなされ、硝化槽には、処理水を
固液分離する膜分離装置と消毒槽とが内装され、膜分離
装置の膜を透過した処理水はポンプで消毒槽へ揚水さ
れ、夾雑物除去槽と消毒槽とが外部に配管された放流管
で接続され、夾雑物除去槽と接する該放流管の管底が、
夾雑物除去槽の設計最高水位に設置されているものであ
る。According to a first aspect of the present invention, there is provided a septic tank according to the present invention, which is provided with an inlet through which treated water flows, and a contaminant removing tank for filtering and removing contaminants, a denitrification tank, and a nitrification tank. The tank and the septic tank are each separated by a partition wall whose upper end is higher than the highest water level.The transfer of the treated water between the impurity removal tank and the denitrification tank is performed by an air lift pump, and the denitrification tank and the nitrification tank are The treated water is transferred from the aeration port provided between the denitrification tank and the nitrification tank, the circulating flow from the nitrification tank to the denitrification tank is performed by an air lift pump, and the treated water is separated into solid and liquid in the nitrification tank. The treatment water that has passed through the membrane of the membrane separation device is pumped to the disinfection tank by a pump, and the contaminant removal tank and the disinfection tank are connected by a discharge pipe that is piped outside. , The bottom of the discharge pipe in contact with the impurity removal tank,
It is installed at the highest design water level of the impurity removal tank.
【0006】請求項2記載の本発明の浄化槽は、上記消
毒槽が硝化槽外に設けられているものである。According to a second aspect of the present invention, there is provided a septic tank, wherein the disinfecting tank is provided outside the nitrification tank.
【0007】[0007]
【作用】請求項1記載の本発明の浄化槽は、夾雑物除去
槽と消毒槽とが外部に配管された放流管で接続され、夾
雑物除去槽と接する放流管の管底が、夾雑物除去槽の設
計最高水位に設置されているので、設計量以上の処理水
が夾雑物除去槽に流入したときには、オーバーフローし
た処理水は放流管で消毒槽に直接移流され、浄化槽の処
理能力を下げることなく対応することができる。又、放
流管を浄化槽の外部に設けたので、浄化槽内を分画して
いる隔壁を貫通する必要がなく、面倒なシール作業等が
不必要となる。According to the first aspect of the present invention, there is provided a septic tank in which the impurity removing tank and the disinfecting tank are connected by a discharge pipe which is externally provided, and the bottom of the discharge pipe in contact with the impurity removing tank is provided with an impurity removing tank. Since the tank is installed at the design maximum water level, when the treated water exceeds the designed amount into the foreign matter removal tank, the overflowed treated water is directly transferred to the disinfection tank by the discharge pipe to reduce the treatment capacity of the septic tank. I can respond without. In addition, since the discharge pipe is provided outside the septic tank, it is not necessary to penetrate the partition partitioning the inside of the septic tank, and a troublesome sealing operation or the like becomes unnecessary.
【0008】請求項2記載の本発明の浄化槽は、上記消
毒槽が硝化槽外に設けられているので、消毒槽を別体に
することにより放流管の配管がし易くなり、硝化槽以降
の設計が容易となる。In the purification tank according to the second aspect of the present invention, since the disinfection tank is provided outside the nitrification tank, the discharge pipe can be easily piped by making the disinfection tank a separate body. Design becomes easy.
【0009】[0009]
【発明の実施の形態】以下に本発明の実施の形態を図面
を参照して説明する。図1は、本発明の浄化槽の一実施
例を示し、図1(イ)は平面図、図1(ロ)は、断面
図、図2は、消毒槽を硝化槽外に設けた浄化槽の別の実
施例を示し、図2(イ)は、平面図、図2(ロ)は、断
面図である。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of a septic tank according to the present invention. FIG. 1 (a) is a plan view, FIG. 1 (b) is a sectional view, and FIG. 2 is another septic tank provided with a disinfecting tank outside the nitrification tank. 2A is a plan view, and FIG. 2B is a cross-sectional view.
【0010】図1(イ)、図1(ロ)に示す様に、本発
明の浄化槽10aは、処理水が流入する流入口11aが
設けられた夾雑物除去槽11と、脱窒槽12と、膜分離
装置14と消毒槽17とを内装する硝化槽13とが、処
理水を移流できる移流口15a、16aが開口され、上
端が最高水位以上になされた隔壁15、15b、16で
それぞれ分画されて形成されている。そして、夾雑物除
去槽11と消毒槽17とは、外部に配管された放流管1
8で接続されている。As shown in FIGS. 1 (a) and 1 (b), a septic tank 10a according to the present invention comprises: a contaminant removing tank 11 provided with an inlet 11a into which treated water flows; The nitrification tank 13 containing the membrane separation device 14 and the disinfecting tank 17 is fractionated by partition walls 15, 15b, 16 each of which has an advection port 15a, 16a through which treated water can be transferred and whose upper end is made higher than the highest water level. It has been formed. The impurity removing tank 11 and the disinfecting tank 17 are connected to the discharge pipe 1
8 are connected.
【0011】図1(ロ)図に示す様に、夾雑物除去槽1
1には、夾雑物除去槽11下部に濾過材11cが設けら
れている。流入口11aより流入する処理水は、流入口
11aに接続した管11bによって濾過材11c下部に
流入している。ろ過材11cは樹脂製からなる球体を堆
積させて上下を網で押さえて多孔体が形成されている。
ろ過材11cの球体の隙間を処理水が通過する際に処理
水に含まれる固形の繊維分が補足除去される。処理水の
繊維分の夾雑物は、このように、濾過材11cによっ
て、沈殿されて、沈殿物は嫌気性微生物により生物学的
に処理される。ろ過材11cを通過した処理水は、隔壁
15の途中に開口された移流口15aからエアリフトポ
ンプ21付近に移流する。そして、処理水は、隔壁15
と隔壁15bの間に設置されたエアリフトポンプ21に
より脱窒槽12へ移流する。[0011] As shown in FIG.
In 1, a filtering material 11 c is provided below the impurity removing tank 11. The treated water flowing in from the inflow port 11a flows into the lower part of the filter medium 11c by the pipe 11b connected to the inflow port 11a. As the filter material 11c, a porous body is formed by depositing a sphere made of resin and holding the sphere at the top and bottom.
When the treated water passes through the gap between the spheres of the filter medium 11c, solid fiber components contained in the treated water are supplementarily removed. The impurities in the fiber of the treated water are thus precipitated by the filter medium 11c, and the precipitate is biologically treated by anaerobic microorganisms. The treated water that has passed through the filter medium 11 c flows near the air lift pump 21 from a convection port 15 a opened in the middle of the partition wall 15. Then, the treated water is supplied to the partition wall 15.
The air is transferred to the denitrification tank 12 by an air lift pump 21 installed between the tank and the partition 15b.
【0012】夾雑物除去槽11の上部には、一時的に多
量の処理水が夾雑物除去槽11に流入した時に、オーバ
ーフローした処理水を放流できるように放流管18が設
けられている。放流管18は、夾雑物除去槽11と消毒
槽17とを接続して、浄化槽10の外部を配管されてい
る。夾雑物除去槽11と接する放流管18の管底は、夾
雑物除去槽11の最高水位の位置になるように、設置さ
れている。消毒槽17の水位は夾雑物除去槽11の設計
最高水位より低めに位置されている。その為、一時的に
夾雑物除去槽11に溢れるオーバーフロー水は放流管1
8を移流して水位の低い消毒槽17に流入することにな
る。A discharge pipe 18 is provided above the impurity removing tank 11 so that when a large amount of treated water temporarily flows into the impurity removing tank 11, the overflowed treated water can be discharged. The discharge pipe 18 connects the contaminant removal tank 11 and the disinfection tank 17 and is provided outside the purification tank 10. The bottom of the discharge pipe 18 in contact with the impurity removing tank 11 is installed so as to be at the highest water level of the impurity removing tank 11. The water level of the disinfecting tank 17 is lower than the designed maximum water level of the impurity removing tank 11. Therefore, the overflow water temporarily overflowing into the impurity removing tank 11 is discharged from the discharge pipe 1.
8 flows into the disinfection tank 17 having a low water level.
【0013】脱窒槽12は、夾雑物除去槽11と硝化槽
13の間に設けられている。脱窒槽12内の処理水は、
エアリフトポンプ21により夾雑物除去槽11より流入
して、処理水中に含まれるBODを炭素源として硝酸性
窒素が脱窒除去される。脱窒された処理水は、隔壁16
の下部に設けられた移流口16aより硝化槽13へ移流
する。脱窒槽12には硝化槽13に設けられたエアリフ
トポンプ22により硝化済の処理水が循環流入するよう
になされている。そして、脱窒槽12の処理水と硝化済
の処理水とを混合して高度な脱窒処理が計られている。The denitrification tank 12 is provided between the impurity removing tank 11 and the nitrification tank 13. The treated water in the denitrification tank 12
The nitric nitrogen is denitrified and removed from the contaminant removal tank 11 by the air lift pump 21 using the BOD contained in the treated water as a carbon source. The denitrified treated water is supplied to the partition 16
Is transferred to the nitrification tank 13 from a transfer port 16a provided in the lower part of the tank. Nitrified treated water is circulated into the denitrification tank 12 by an air lift pump 22 provided in the nitrification tank 13. Then, advanced denitrification treatment is performed by mixing the treated water in the denitrification tank 12 with the nitrified treated water.
【0014】硝化槽13には、膜分離装置14と消毒槽
17が設けられている。処理水は、硝化槽13内の好気
性微生物により生物学的に処理され、処理水中に含まれ
るアンモニア性窒素が硝化されると共にBODが分解さ
れる。膜分離装置14は、多数の平板状のろ過膜板を並
設して形成されている。ろ過膜板は、ろ過膜の周縁部を
ろ過膜枠材に固着して形成されている。膜分離装置14
のろ過膜板とろ過膜板の間には空間が設けられ、内部空
間はろ過膜を透過した処理水が移送できる管路が設けら
れ、管路を通って処理水は消毒槽17へ移流されてい
る。The nitrification tank 13 is provided with a membrane separation device 14 and a disinfection tank 17. The treated water is biologically treated by the aerobic microorganisms in the nitrification tank 13, whereby the ammoniacal nitrogen contained in the treated water is nitrified and the BOD is decomposed. The membrane separation device 14 is formed by juxtaposing a large number of flat filtration membrane plates. The filtration membrane plate is formed by fixing the periphery of the filtration membrane to the filtration membrane frame material. Membrane separation device 14
A space is provided between the filtration membrane plates and the internal space is provided with a conduit through which the treated water that has passed through the filtration membrane can be transferred, and the treated water is transferred to the disinfection tank 17 through the conduit. .
【0015】膜分離装置14の下部には、散気管23が
配設され、散気管23には別途設置されたブロア24に
よって空気が供給されている。散気管23により硝化槽
13内に気泡が送られて酸素が供給されている。酸素の
供給と同時に散気管23より噴出した気泡は、膜分離装
置14のろ過膜板にも吹き付けられてろ過膜板の表面に
汚泥が付着しないようになされている。このように、散
気管23から排出された空気によってろ過膜板の洗浄と
硝化槽内のばっ気が行われる。A diffuser 23 is provided below the membrane separator 14, and air is supplied to the diffuser 23 by a blower 24 provided separately. Air bubbles are sent into the nitrification tank 13 by the air diffuser 23 to supply oxygen. Bubbles ejected from the air diffuser 23 simultaneously with the supply of oxygen are also blown to the filtration membrane plate of the membrane separator 14 so that sludge does not adhere to the surface of the filtration membrane plate. As described above, the air discharged from the air diffuser 23 cleans the filtration membrane plate and aerates the inside of the nitrification tank.
【0016】濾過膜板を透過した処理水は、濾過膜によ
って、固形物と処理水とが固液分離され、処理水中の固
体は硝化槽13の下部に沈殿される。固液分離され、膜
分離装置14の濾過膜を透過した処理水は、ポンプ20
で消毒槽17に揚水される。消毒槽17内の薬剤17a
で消毒された処理水は排出管17bで外部へ排出され
る。消毒槽17に揚水される方法は、その他硝化槽内に
膜分離装置14が水没しているので、硝化槽水面との水
頭圧差を利用してエアリフトポンプで揚水することもで
きる。In the treated water that has passed through the filtration membrane plate, solids and treated water are separated into solid and liquid by the filtration membrane, and the solids in the treated water are precipitated in the lower part of the nitrification tank 13. The treated water that has been separated into solid and liquid and has passed through the filtration membrane of the membrane separation device 14 is pumped by a pump 20.
Is pumped to the disinfection tank 17. Drug 17a in disinfection tank 17
The treated water disinfected in the above is discharged outside through a discharge pipe 17b. Another method of pumping water into the disinfection tank 17 is that the membrane separation device 14 is submerged in the nitrification tank, so that water can be pumped by an air lift pump using the water head pressure difference from the surface of the nitrification tank.
【0017】図2(イ)、図2(ロ)は、消毒槽17を
硝化槽13外に設けた浄化槽の別の実施例を示し、図2
(イ)は、平面図、図2(ロ)は、断面図である。図2
(イ)、図2(ロ)に示す様に、浄化槽10bの消毒槽
17は、硝化槽13外に設置されている。硝化槽13内
に設けられた膜分離装置14を透過した処理水は、ポン
プ20で揚水されて管19で消毒槽17に移流されてい
る。浄化槽10bのその他の構造は、図1(イ)、図1
(ロ)に示す浄化槽10aと同様なので説明を省略す
る。FIGS. 2A and 2B show another embodiment of the purification tank in which the disinfection tank 17 is provided outside the nitrification tank 13. FIG.
2A is a plan view, and FIG. 2B is a cross-sectional view. FIG.
(A), as shown in FIG. 2 (B), the disinfection tank 17 of the purification tank 10b is installed outside the nitrification tank 13. The treated water that has passed through the membrane separation device 14 provided in the nitrification tank 13 is pumped by a pump 20 and transferred to a disinfection tank 17 by a pipe 19. Other structures of the septic tank 10b are shown in FIGS.
The description is omitted because it is similar to the septic tank 10a shown in (b).
【0018】上記のように、本発明の浄化槽10aは、
夾雑物除去槽11と消毒槽17とが外部に配管された放
流管18で接続され、夾雑物除去槽11と接する放流管
18の管底が、夾雑物除去槽11の最高水位に設置され
ているので、一時的に設計量以上の処理水が夾雑物除去
槽11に流入したときには、オーバーフローした処理水
は放流管18で消毒槽17に直接移流され、浄化槽の処
理能力を下げることなく対応することができる。又、放
流管18は、浄化槽10aの外部に設けたので、浄化槽
10a内を分画している隔壁15、15b、16を貫通
する必要がなく、面倒な隔壁のシール作業等が不必要と
なる。As described above, the septic tank 10a according to the present invention comprises:
The contaminant removal tank 11 and the disinfection tank 17 are connected by a discharge pipe 18 piped outside, and the bottom of the discharge pipe 18 in contact with the contaminant removal tank 11 is installed at the highest water level of the contaminant removal tank 11. Therefore, when the treated water more than the designed amount temporarily flows into the impurity removing tank 11, the overflowed treated water is directly transferred to the disinfection tank 17 by the discharge pipe 18, and can be dealt with without lowering the treatment capacity of the purification tank. be able to. In addition, since the discharge pipe 18 is provided outside the septic tank 10a, it is not necessary to penetrate the partition walls 15, 15b, and 16 that partition the inside of the septic tank 10a, and troublesome sealing work of the partition wall and the like become unnecessary. .
【0019】又、本発明の浄化槽10bは、上記消毒槽
17が硝化槽13外に設けられているので、消毒槽17
を別体にすることにより放流管18の配管がし易くな
り、硝化槽13以降の設計が容易となる。Further, in the purification tank 10b of the present invention, since the disinfection tank 17 is provided outside the nitrification tank 13, the disinfection tank 17 is provided.
Is separated, the discharge pipe 18 can be easily piped, and the design of the nitrification tank 13 and thereafter can be easily performed.
【0020】[0020]
【発明の効果】請求項1記載の本発明の浄化槽は、上記
の様に、夾雑物除去槽と接する放流管の管底が、夾雑物
除去槽の最高水位に設置されているので、設計量以上の
原水が流入したときにも、槽内の処理能力を下げること
なく対応でき、又放流管を外部に設けたので、隔壁を貫
く際のシール作業等が不必要となる。According to the first aspect of the present invention, as described above, since the bottom of the discharge pipe that is in contact with the impurity removing tank is located at the highest water level of the impurity removing tank, the designed amount can be reduced. Even when the above-mentioned raw water flows in, it is possible to cope without reducing the processing capacity in the tank, and since the discharge pipe is provided outside, sealing work or the like when penetrating the partition wall becomes unnecessary.
【0021】請求項2記載の本発明の浄化槽は、上記消
毒槽が硝化槽外に設けられているので、消毒槽を別体に
すると配管がし易くなり、硝化槽以降の設計が容易とな
る。In the septic tank according to the second aspect of the present invention, since the disinfecting tank is provided outside the nitrification tank, piping is easy if the disinfecting tank is separated, and the design after the nitrification tank is facilitated. .
【図1】本発明の浄化槽の一実施例を示し、図1(イ)
は平面図、図1(ロ)は、断面図である。FIG. 1 shows one embodiment of a septic tank according to the present invention, and FIG.
Is a plan view and FIG. 1B is a sectional view.
【図2】消毒槽を硝化槽外に設けた浄化槽の別の実施例
を示し、図2(イ)は、平面図、図2(ロ)は、断面図
である。FIG. 2 shows another embodiment of a purification tank in which a disinfecting tank is provided outside a nitrification tank. FIG. 2 (a) is a plan view, and FIG. 2 (b) is a cross-sectional view.
10a、10b 浄化槽 11 夾雑物除去槽 12 脱窒槽 13 硝化槽 14 膜分離装置 15、15b、16 隔壁 15a、16a 移流口 17 消毒槽 17a 薬剤 17b 放出口 18 放流管 19 管 20 ポンプ 21、22 エアリフトポンプ 23 散気管 24 ブロアー DESCRIPTION OF SYMBOLS 10a, 10b Septic tank 11 Contaminant removal tank 12 Denitrification tank 13 Nitrification tank 14 Membrane separator 15, 15b, 16 Partition wall 15a, 16a Outflow port 17 Disinfection tank 17a Chemical 17b Discharge port 18 Discharge pipe 19 Pipe 20 Pump 21, 22 Air lift pump 23 diffuser 24 blower
Claims (2)
雑物をろ過して除去する夾雑物除去槽と、脱窒槽と、硝
化槽とが上端が最高水位以上になされた隔壁でそれぞれ
分画されてなる浄化槽であって、 夾雑物除去槽と、脱窒槽との処理水の移送はエアリフト
ポンプでなされ、脱窒槽と硝化槽との処理水の移送は脱
窒槽と硝化槽との間に設けられた移流口から移流され、
硝化槽から脱窒槽への循環流はエアリフトポンプでなさ
れ、 硝化槽には、処理水を固液分離する膜分離装置と消毒槽
とが内装され、膜分離装置の膜を透過した処理水はポン
プで消毒槽へ揚水され、 夾雑物除去槽と消毒槽とが外部に配管された放流管で接
続され、 夾雑物除去槽と接する該放流管の管底が、夾雑物除去槽
の設計最高水位に設置されていることを特徴とする浄化
槽。1. An inflow port into which treated water flows is provided, and an impurity removal tank for filtering and removing impurities, a denitrification tank, and a nitrification tank are each separated by a partition wall having an upper end higher than the highest water level. The treated water is transferred between the denitrification tank and the denitrification tank by an air lift pump, and the treated water between the denitrification tank and the nitrification tank is transferred between the denitrification tank and the nitrification tank. Advected from the provided advection port,
The circulating flow from the nitrification tank to the denitrification tank is performed by an air lift pump.The nitrification tank is equipped with a membrane separation device that separates the treated water into solid and liquid and a disinfection tank, and the treated water that has passed through the membrane of the membrane separation device is pumped. The contaminant removal tank and the disinfection tank are connected by a discharge pipe connected to the outside, and the bottom of the discharge pipe in contact with the contaminant removal tank is at the design maximum water level of the contaminant removal tank. A septic tank characterized by being installed.
ことを特徴とする請求項1記載の浄化槽。2. The purification tank according to claim 1, wherein the disinfection tank is provided outside the nitrification tank.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10348722A JP2000167576A (en) | 1998-12-08 | 1998-12-08 | Septic tank |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10348722A JP2000167576A (en) | 1998-12-08 | 1998-12-08 | Septic tank |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2000167576A true JP2000167576A (en) | 2000-06-20 |
Family
ID=18398933
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10348722A Pending JP2000167576A (en) | 1998-12-08 | 1998-12-08 | Septic tank |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2000167576A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6863817B2 (en) | 2002-12-05 | 2005-03-08 | Zenon Environmental Inc. | Membrane bioreactor, process and aerator |
JP2013116453A (en) * | 2011-12-05 | 2013-06-13 | Yanmar Sangyo Kk | Wastewater treatment apparatus |
-
1998
- 1998-12-08 JP JP10348722A patent/JP2000167576A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6863817B2 (en) | 2002-12-05 | 2005-03-08 | Zenon Environmental Inc. | Membrane bioreactor, process and aerator |
JP2013116453A (en) * | 2011-12-05 | 2013-06-13 | Yanmar Sangyo Kk | Wastewater treatment apparatus |
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