JP4275286B2 - Flow control device - Google Patents

Flow control device Download PDF

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Publication number
JP4275286B2
JP4275286B2 JP2000085879A JP2000085879A JP4275286B2 JP 4275286 B2 JP4275286 B2 JP 4275286B2 JP 2000085879 A JP2000085879 A JP 2000085879A JP 2000085879 A JP2000085879 A JP 2000085879A JP 4275286 B2 JP4275286 B2 JP 4275286B2
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Prior art keywords
flow rate
rate adjusting
outlet
tank
mass
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JP2001269676A (en
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淳 日比野
正記 伊達
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株式会社日立ハウステック
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Description

【0001】
【発明の属する技術分野】
本発明は、屎尿、生活雑排水、その他の排水などを処理する浄化槽の流量調整装置に関する。
【0002】
【従来の技術】
浄化槽内に例えば浴槽排水などによる数分間に200L〜300Lの大量の排水の流入があった場合に、浄化槽の上流側から下流側への排水の移流が速く各槽毎の処理に必要とされる滞留時間が短くなり、処理が不安定になる不都合が生じた。
【0003】
そこで、一度に大量の移流を避けるため、浄化槽内に流量調整装置を設けて、移流水量を制限する方法が採られている。例えば、流量調整装置としてポンプ(電動ポンプ又はエアリフトポンプ)により定量移送させる方法(特開平4−367793号公報参照)、あるいは、移流部にオリフィスを設ける方法(特開平11−10179号公報参照)等が提案されている。
【0004】
【発明が解決しようとする課題】
しかし、流量調整装置を長期間稼働させていると、例えば、流量調整装置の流出口に生物膜等の汚れが付着し、移流量が減少して所望する性能が得られないことがあった。
【0005】
そこで本発明は、浄化槽内に配設する流量調整装置の移流量を長期に渡って安定させることを目的とする。
【0006】
【課題を解決するための手段】
上記目的を達成するため、本発明の流量調整装置は下記の構成を具備する。(1)浄化槽内を複数の処理に区画し、上流側の処理から下流側の処理に排水を移流させる流量を調整する流量調整装置であって、流量調整装置は隣接する処理から排水を移流させる流入口と、排水を下流側に流出する流出口を有する流量調整マスと、流量調整マスの流出口に向って気体を供給する気体供給手段とを備えている。そして、流量調整マスは流出口を設置槽の水面レベルより下部に設置されると共に、気体供給手段から供給される気体は流量調整マスの流出口を気泡の状態で通過させ、流出口を洗浄させる構成を有し、流量調整マスは流出口周縁に、流量調整マスの下面に流出口を囲んで、下方に突出し、気体供給手段の吐出口の真上に設置されるガイド部材を配設し、気体供給手段から供給される気体は前記ガイド部材により流出口に案内されるよう構成してなる
【0007】
(2)本発明において隣接槽からの排水はポンプによって汲み上げられ、流量調整マス内に流入する構成を有する。
【0008】
(作用)上記のように構成された浄化槽の流量調整装置は、流量調整装置の流出口に移流水以外の、例えば空気などの気体を通過させるため、汚れが付きにくい。又、流出口を水面下に設置するため、汚れが乾燥せず落ちやすい。さらに、移流する排水をポンプにより実行させることにより、処理槽の水位を下げることができ、流量調整マスの容積を増大させることができる。
【0009】
【発明の実施の形態】
本発明の実施の形態を図面により説明する。図1は本発明に係る浄化槽の構成説明図である。
浄化槽1は、槽内に第1の嫌気処理室12、第2の嫌気処理室13、好気処理槽14、処理水槽15及び消毒槽16が形成されている。第1の嫌気処理室12、第2の嫌気処理室13には嫌気濾材122,133が各々配設され、各室で排水は嫌気処理がなされる。好気処理槽14には、散気部材145が設けられている。散気部材145は、流入した排水を好気処理するために使用されるものであり、常時空気泡の吐出を行っている。
そして、屎尿、生活雑排水などは第1の嫌気処理室12に配設される流入口3から流入し、第1の嫌気処理室12の濾材122中を流下し、沈殿分離処理される。そして移流管125を経て連通口123から第2の嫌気処理室13に移流、濾材133中を流下し沈殿分離処理され、移流管135から流量調整装置20を経て好気処理槽14に流入する。好気処理槽14において、好気処理され処理水槽15及び消毒槽16の順に処理され、流出口5から排出される。
【0010】
図2を参照して流量調整装置20の構成を説明する。
この実施例では、流量調整装置20は好気処理槽14の流入口134に配設されている。
流量調整装置20は移流排水を貯留する流量調整マス21と気体を流量調整マス21の下部に向って供給する気体供給手段を装備している。流量調整マス21は第2の嫌気処理室13上部の流入口134に開口する流入口23、好気処理槽14に開口する流出口25を有している。気体供給手段は図示していない空気供給部から供給される空気を案内し流量調整マス21の下部に向って散気する散気部27からなる。
【0011】
流量調整装置20の流量調整マス21は、第1の嫌気処理室12及び第2の嫌気処理室13の上部に設定される最高水位H.W.L.と最低水位L.W.L.の間に形成される流量調整部7に対応して好気処理槽14の上部に配設される。好気処理槽14の水位が最低水位L.W.L.とすると、流量調整装置20の流出口25は好気処理槽14の水面レベルに設置されるように流量調整マス21が配設される。流量調整装置20の流出口25は穿孔される複数の***形状をなしている。流量調整装置20において、流量調整マス21の流出口25の穴の大きさによって移流量が規制されている。例えば、処理水量Qが1日あたり1立方メートルの浄化槽においては、移流量を2〜3Qに制限することが好ましく、このときの流出口25の穴径はφ10程度としている。
第2の嫌気処理室13からの移流水は流入口23より流量調整マス21内に流入する。そして、***形状の流出口25によって移流量を制限されながら、好気処理槽14に移流する。
【0012】
流量調整装置20の散気部27は流量調整マス21の下部に開口する空気吐出口270を有する空気吐出管を備えている。散気部27は図示しない気体供給部より常時または間欠的に空気(気体)を吐出口270から吐出する構成となっている。吐出されるこの空気泡は好気処理槽14中を上昇し、流量調整マス21の流出口25を通って流量調整マス21内に入る。そして、散気部27の空気泡が流出口25を通過する際、***形状の流出口25に付着する汚れを洗浄する。
【0013】
このとき、流量調整マス21の流出口25は好気処理槽14の水面、あるいは水面下に位置しているので、常時流出口25は湿潤しており、流出口25に付着した汚れ物は空気泡の通過により容易に剥離される。
なお、流量調整マス21の流出口25は水面に水平に配設する必要はなく、空気が流出口25を通過できる構成であればよい。
【0014】
又、この実施例では散気部27が吐出する気体は空気としているが、気体は空気に限定することはなく、例えばオゾン等でもよい。
次に、流量調整装置の流出口の洗浄効率の向上を図った構成例を図3に示す。この流量調整装置は流量調整マス21の下面に流出口25を囲んでガイド部材30を配設している。このガイド部材30は散気部27の吐出口270から吐出される空気泡を流出口25に案内するように設置される。すなわち、ガイド部材30に囲まれている部分の真下に散気部27の吐出口270を配置することにより、散気部27から吐出される空気は流出口25方向に誘導され、流出口25以外に逃げることなく、流出口25は吐出泡により効率よく洗浄される。
【0015】
この実施例は、流量調整装置20を好気処理槽14の水面に設けた例を示している。この場合、好気処理槽14に配設される散気部材145を気体供給手段として利用することもできる。これは好気処理槽14に配設される散気部材145より吐出する空気を、流量調整装置20の流出口25方向に導き、流出口25の洗浄用空気とする。この構成により、流量調整装置の散気部を省略することができ、装置の簡素化が達成できる。
【0016】
次に流量調整装置にポンプを配設した構成例を、図4に示す。
この実施例は、第2の嫌気処理部13の移流管135にポンプ40を配設している。そして、流量調整装置20へは隣接する第2の嫌気処理槽13の排水をポンプ40によりポンプアップして移流させている。この場合、ポンプ40として動力が空気であるエアリフトポンプを用いることにより、特別線など必要とせず、さらに構成の簡素化を達成する。
【0017】
【発明の効果】
本発明の効果を以下に列記する。
(1)流量調整装置の下流側への流出口に移流水以外の気体、例えば空気などを通過させるため、空気通過時の汚染剥離を実行し、汚れが付きにくい。又、このとき、流出口を水面または水面下に設置するため、汚れが乾燥せず落ちやすい。
(2)流量調整装置の流出口は常時空気泡により洗浄されているので、汚染による目詰まりが解消され、長期間に渡って安定した移流量の調整を実行する。
(3)流量調整装置の下面に気体泡の案内部材を配設することにより、吐出される気体泡は確実に流量調整マスの流出口に誘導され、効率よく汚染剥離を実行する。
(4)隣接処理槽からの排水の移流をポンプにより強制的に実行させることにより、流量調整装置の配設槽の水位を低く設定でき、水位に合わせて流量調整マスの容量を増加すことができる。
(5)好気処理槽の散気部材から吐出される空気を、流量調整装置の流出口の洗浄用空気に利用することにより、流量調整装置の散気部を省略することができ、装置が簡素化できる。
【図面の簡単な説明】
【図1】本発明に係る流量調整装置を配設した浄化槽の説明図。
【図2】本発明に係る流量調整装置の拡大図。
【図3】本発明に係る流量調整装置の他の実施例の拡大図。
【図4】本発明に係る流量調整装置において、ポンプを配設した浄化槽の断面説明図。
【符号の説明】
1 浄化槽 12 第1の嫌気処理槽
13 第2の嫌気処理槽 14 好気処理槽
15 処理水槽 16 消毒槽
20 流量調整装置 21 流量調整マス
23 流入口 25 流入口
30 ガイド部材 40 エアリフトポンプ
145 散気部材
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a flow rate adjusting device for a septic tank for treating manure, household wastewater, and other wastewater.
[0002]
[Prior art]
For example, when a large amount of waste water of 200L to 300L is flown into the septic tank for several minutes due to, for example, bathtub drainage, the transfer of the waste water from the upstream side to the downstream side of the septic tank is fast and is required for processing for each tank. The residence time was shortened, resulting in inconvenience that the treatment became unstable.
[0003]
Therefore, in order to avoid a large amount of advection at a time, a method of limiting the amount of advection water by providing a flow rate adjusting device in the septic tank has been adopted. For example, as a flow rate adjusting device, a method of quantitatively transferring by a pump (electric pump or air lift pump) (refer to Japanese Patent Laid-Open No. 4-367793) or a method of providing an orifice in a convection section (refer to Japanese Patent Laid-Open No. 11-10179) Has been proposed.
[0004]
[Problems to be solved by the invention]
However, when the flow rate adjusting device is operated for a long period of time, for example, dirt such as a biofilm adheres to the outlet of the flow rate adjusting device and the transfer flow rate is reduced, and the desired performance may not be obtained.
[0005]
Accordingly, an object of the present invention is to stabilize the transfer flow rate of a flow rate adjusting device disposed in a septic tank over a long period of time.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the flow rate adjusting device of the present invention has the following configuration. (1) A septic tank is divided into a plurality of processing tanks , and is a flow rate adjusting device that adjusts the flow rate for transferring the wastewater from the upstream processing tank to the downstream processing tank , and the flow rate adjusting device is connected to the adjacent processing tank. A flow rate adjusting mass having an inflow port for transferring the waste water, an outflow port for discharging the waste water to the downstream side, and a gas supply means for supplying gas toward the outflow port of the flow rate adjusting mass are provided. The flow rate adjusting mass is installed at the outlet below the water level of the installation tank, and the gas supplied from the gas supply means passes the outlet of the flow rate adjusting mass in the form of bubbles and cleans the outlet. The flow rate adjustment mass has a configuration, and a guide member is provided around the outflow port, surrounding the outflow port on the lower surface of the flow rate adjustment mass, projecting downward, and installed directly above the discharge port of the gas supply means, The gas supplied from the gas supply means is configured to be guided to the outlet by the guide member .
[0007]
(2) waste water from neighbor cell in the present invention is pumped up by the pump has a structure which flows into the flow regulating the mass.
[0008]
(Operation) Since the flow rate adjusting device of the septic tank configured as described above passes a gas such as air other than the advection water through the outlet of the flow rate adjusting device, it is difficult to be contaminated. Further, since the outlet is installed under the surface of the water , the dirt is not dried and is easily removed. Furthermore, the water level in the treatment tank can be lowered by causing the advancing drainage to be performed by the pump, and the volume of the flow rate adjusting mass can be increased.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory view of the configuration of a septic tank according to the present invention.
In the septic tank 1, a first anaerobic treatment chamber 12, a second anaerobic treatment chamber 13, an aerobic treatment tank 14, a treated water tank 15, and a disinfection tank 16 are formed in the tank. The first anaerobic treatment chamber 12 and the second anaerobic treatment chamber 13 are provided with anaerobic filter media 122 and 133, respectively, and the wastewater is subjected to anaerobic treatment in each chamber. An aeration member 145 is provided in the aerobic treatment tank 14. The air diffuser 145 is used for aerobic treatment of the drained wastewater, and always discharges air bubbles.
Then, manure, household wastewater and the like flow from the inlet 3 disposed in the first anaerobic treatment chamber 12, flow down through the filter medium 122 of the first anaerobic treatment chamber 12, and are subjected to precipitation separation processing. Then, the fluid flows from the communication port 123 to the second anaerobic treatment chamber 13 through the advection pipe 125, flows down through the filter medium 133, undergoes precipitation separation processing, and flows into the aerobic treatment tank 14 from the advection pipe 135 through the flow rate adjusting device 20. In the aerobic treatment tank 14, the aerobic treatment is performed, and the treated water tank 15 and the disinfection tank 16 are processed in this order, and are discharged from the outlet 5.
[0010]
The configuration of the flow rate adjusting device 20 will be described with reference to FIG.
In this embodiment, the flow rate adjusting device 20 is disposed at the inlet 134 of the aerobic treatment tank 14.
The flow rate adjusting device 20 is equipped with a flow rate adjusting mass 21 for storing advection waste water and a gas supply means for supplying gas toward the lower portion of the flow rate adjusting mass 21. The flow rate adjusting mass 21 has an inlet 23 that opens to the inlet 134 in the upper part of the second anaerobic treatment chamber 13 and an outlet 25 that opens to the aerobic treatment tank 14. The gas supply means includes an air diffuser 27 that guides air supplied from an air supply unit (not shown) and diffuses air toward the lower portion of the flow rate adjusting mass 21.
[0011]
The flow rate adjusting mass 21 of the flow rate adjusting device 20 has a maximum water level HW set at the upper part of the first anaerobic treatment chamber 12 and the second anaerobic treatment chamber 13. L. And the lowest water level L. W. L. Is disposed above the aerobic treatment tank 14 so as to correspond to the flow rate adjusting unit 7 formed therebetween. The water level in the aerobic treatment tank 14 is the lowest water level. W. L. Then, the flow rate adjusting mass 21 is disposed so that the outlet 25 of the flow rate adjusting device 20 is installed at the water surface level of the aerobic treatment tank 14. The outlet 25 of the flow rate adjusting device 20 has a plurality of small holes that are perforated. In the flow rate adjusting device 20, the transfer flow rate is regulated by the size of the hole of the outlet 25 of the flow rate adjusting mass 21. For example, in a septic tank having a treated water amount Q of 1 cubic meter per day, the transfer flow rate is preferably limited to 2 to 3Q, and the hole diameter of the outlet 25 at this time is about φ10.
Advection water from the second anaerobic treatment chamber 13 flows into the flow rate adjustment mass 21 from the inlet 23. And it transfers to the aerobic processing tank 14, being restricted by the small hole-shaped outflow port 25.
[0012]
The air diffuser 27 of the flow rate adjusting device 20 includes an air discharge pipe having an air discharge port 270 that opens at a lower portion of the flow rate adjusting mass 21. The air diffuser 27 is configured to discharge air (gas) from the discharge port 270 constantly or intermittently from a gas supply unit (not shown). The discharged air bubbles rise in the aerobic treatment tank 14 and enter the flow rate adjusting mass 21 through the outlet 25 of the flow rate adjusting mass 21. And when the air bubble of the diffuser part 27 passes the outflow port 25, the stain | pollution | contamination adhering to the outflow port 25 of a small hole shape is wash | cleaned.
[0013]
At this time, since the outlet 25 of the flow rate adjusting mass 21 is located on the water surface of the aerobic treatment tank 14 or below the water surface, the outlet 25 is always wet, and the dirt attached to the outlet 25 is air. It is easily peeled off by the passage of bubbles.
It should be noted that the outlet 25 of the flow rate adjusting mass 21 does not need to be disposed horizontally on the water surface, and may be any configuration as long as air can pass through the outlet 25.
[0014]
In this embodiment, the gas discharged from the air diffuser 27 is air, but the gas is not limited to air, and may be, for example, ozone.
Next, FIG. 3 shows a configuration example that improves the cleaning efficiency of the outlet of the flow rate adjusting device. In the flow rate adjusting device, a guide member 30 is disposed on the lower surface of the flow rate adjusting mass 21 so as to surround the outlet 25. The guide member 30 is installed so as to guide the air bubbles discharged from the discharge port 270 of the air diffuser 27 to the outlet 25. That is, by disposing the discharge port 270 of the air diffuser 27 just below the portion surrounded by the guide member 30, the air discharged from the air diffuser 27 is guided in the direction of the outlet 25, and other than the outlet 25. The outlet 25 is efficiently cleaned by the discharged bubbles without escaping.
[0015]
This embodiment shows an example in which the flow rate adjusting device 20 is provided on the water surface of the aerobic treatment tank 14. In this case, the diffuser member 145 disposed in the aerobic treatment tank 14 can be used as a gas supply unit. This guides the air discharged from the air diffuser 145 disposed in the aerobic treatment tank 14 toward the outlet 25 of the flow rate adjusting device 20, and serves as cleaning air for the outlet 25. With this configuration, the air diffuser of the flow rate adjusting device can be omitted, and simplification of the device can be achieved.
[0016]
Next, FIG. 4 shows a configuration example in which a pump is provided in the flow rate adjusting device.
In this embodiment, the pump 40 is disposed in the advection pipe 135 of the second anaerobic processing unit 13. Then, the drainage of the adjacent second anaerobic treatment tank 13 is pumped up by the pump 40 and transferred to the flow rate adjusting device 20. In this case, by using an air lift pump whose power is air as the pump 40, a special line or the like is not required, and further simplification of the configuration is achieved.
[0017]
【The invention's effect】
The effects of the present invention are listed below.
(1) Gases other than the advection water, such as air, are allowed to pass through the outlet to the downstream side of the flow rate adjusting device. At this time, since the outlet is installed on the surface of the water or below the surface of the water, the dirt is not dried and is easily removed.
(2) Since the outlet of the flow rate adjusting device is always washed with air bubbles, clogging due to contamination is eliminated, and stable transfer flow rate adjustment is performed over a long period of time.
(3) By disposing a gas bubble guide member on the lower surface of the flow rate adjusting device, the discharged gas bubbles are surely guided to the outlet of the flow rate adjusting mass, and efficiently perform decontamination.
(4) By forcibly executing the advection of drainage from the adjacent treatment tank, the water level of the flow control device can be set low, and the capacity of the flow control mass can be increased according to the water level. it can.
(5) By using the air discharged from the air diffuser of the aerobic treatment tank as the cleaning air at the outlet of the flow control device, the air diffuser of the flow control device can be omitted, It can be simplified.
[Brief description of the drawings]
FIG. 1 is an explanatory view of a septic tank provided with a flow rate adjusting device according to the present invention.
FIG. 2 is an enlarged view of a flow rate adjusting device according to the present invention.
FIG. 3 is an enlarged view of another embodiment of the flow regulating device according to the present invention.
FIG. 4 is a cross-sectional explanatory view of a septic tank provided with a pump in the flow rate adjusting apparatus according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Purification tank 12 1st anaerobic treatment tank 13 2nd anaerobic treatment tank 14 Anaerobic treatment tank 15 Treated water tank 16 Disinfection tank 20 Flow control device 21 Flow control mass 23 Inlet 25 Inlet 30 Guide member 40 Air lift pump 145 Aeration Element

Claims (3)

嫌気処理槽、好気処理槽、消毒槽を順次配設する浄化槽に装備され、上流側から下流側への排水の移流量を調整する流量調整装置であって、隣接する処理から排水を移流させる流入口と、排水を下流側に流出する流出口を有する流量調整マスと、該流量調整マスの流出口に向って気体を供給する気体供給手段とを備え、流量調整マスは流出口を設置槽の水面レベルより下部に設置されると共に、気体供給手段から供給される気体は流量調整マスの流出口を気泡の状態で通過するよう構成され
流量調整マスは流出口周縁に、流量調整マスの下面に流出口を囲んで、下方に突出し、気体供給手段の吐出口の真上に設置されるガイド部材を配設し、気体供給手段から供給される気体は前記ガイド部材により流出口に案内されるよう構成してなる浄化槽の流量調整装置。
Anaerobic treatment tank, aerobic treatment tank is equipped with septic tank sequentially arranged a disinfecting chamber, a flow controller for adjusting the advection of waste water from the upstream side to the downstream side, advection wastewater from treatment tank adjacent A flow rate adjusting mass having an outlet for discharging the waste water to the downstream side, and gas supply means for supplying gas toward the outlet of the flow rate adjusting mass. Installed below the water level of the tank, the gas supplied from the gas supply means is configured to pass through the outlet of the flow rate adjustment mass in the form of bubbles ,
The flow rate adjusting mass is supplied from the gas supply means at the periphery of the outlet, by surrounding the outflow port with the lower surface of the flow rate adjusting mass, protruding downward, and a guide member installed directly above the discharge port of the gas supply means. A flow rate adjusting device for a septic tank configured such that the gas to be guided is guided to the outlet by the guide member .
隣接する処理からの排水はエアリフトポンプによって流量調整マスに移流される請求項1に記載の浄化槽の流量調整装置。Septic flow regulating device according to claim 1 effluent from the adjacent processing tank which is advected in flow regulating mass by an air lift pump. 流量調整装置が好気処理槽に配設されると共に、気体供給手段は好気処理槽に配設される散気部材である請求項1又は2に記載の浄化槽の流量調整装置。 The flow rate adjusting device for a septic tank according to claim 1 or 2, wherein the flow rate adjusting device is disposed in the aerobic treatment tank, and the gas supply means is a diffuser member disposed in the aerobic treatment tank.
JP2000085879A 2000-03-27 2000-03-27 Flow control device Expired - Fee Related JP4275286B2 (en)

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