JP2003245680A - Sewage purification tank fitted with filtration unit - Google Patents
Sewage purification tank fitted with filtration unitInfo
- Publication number
- JP2003245680A JP2003245680A JP2002049836A JP2002049836A JP2003245680A JP 2003245680 A JP2003245680 A JP 2003245680A JP 2002049836 A JP2002049836 A JP 2002049836A JP 2002049836 A JP2002049836 A JP 2002049836A JP 2003245680 A JP2003245680 A JP 2003245680A
- Authority
- JP
- Japan
- Prior art keywords
- tank
- sewage purification
- purification tank
- filtration
- biological reaction
- 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.)
- Granted
Links
Landscapes
- Filtration Of Liquid (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、し尿や雑排水など
の汚水もしくは排水を浄化処理する汚水浄化槽に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewage purification tank for purifying sewage or wastewater such as human waste or gray water.
【０００２】[0002]
【従来の技術】浄化槽内を、槽体（浄化槽の外郭）の内
壁及び底部で接する所定の容器によって、その容器を含
めて３以上の独立した槽（室）に区切って構成した汚水
浄化槽は、従来から知られている（実公平６−３４８７
９号公報）。また、本出願人は、先に、上流から、嫌気
濾床槽第１室、嫌気濾床槽第２室、好気濾床槽（上区画
の生物反応床と下区画の濾過床とからなる）、処理水槽
及び消毒槽を備える汚水浄化槽を開発・上市した（特許
第２９０４１０２号公報）。2. Description of the Related Art A septic tank is constructed by dividing a septic tank into three or more independent tanks (rooms) including a predetermined container which is in contact with an inner wall and a bottom of a tank body (outer shell of the septic tank). Known from the past (actual fair 6-3487
No. 9). Further, the present applicant has previously proposed that from the upstream side, the anaerobic filter bed first chamber, the anaerobic filter bed second chamber, and the aerobic filter bed tank (consisting of the biological reaction bed in the upper section and the filter bed in the lower section) ), And developed and put on the market a sewage purification tank including a treated water tank and a disinfection tank (Japanese Patent No. 2904102).
【０００３】[0003]
【発明が解決しようとする課題】本発明は、上記特許第
２９０４１０２号の汚水浄化槽を更に改良・発展させる
ものであり、その目的とするところは、組立て性に優
れ、良好な水質の処理水が得られる汚水浄化槽を提供す
ることである。DISCLOSURE OF THE INVENTION The present invention is to further improve and develop the sewage purification tank of the above-mentioned Japanese Patent No. 2904102, and its purpose is to provide a treated water having excellent assembling ability and good water quality. It is to provide an obtained sewage purification tank.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成するた
め、本発明では次の構成をとった。すなわち、本発明
は、汚水の流れの順に、嫌気処理槽４，５と、生物反応
槽６と、濾過部７と、消毒部８とを備える汚水浄化槽で
あって、前記濾過部７は、単独に、あるいは仕切９を介
して前記消毒部８と共に、嫌気処理槽４，５又は生物反
応槽６のいずれかの槽の一画に配置した箱状容器１１の
中に形成することを特徴とする汚水浄化槽１である。す
なわち、箱状容器１１は、汚水浄化槽内を区画するため
の仕切壁を兼ねるのではなく、それ自身で独立した一槽
（又は室）を形成している。In order to achieve the above object, the present invention has the following constitution. That is, the present invention is a sewage purification tank comprising anaerobic treatment tanks 4 and 5, a biological reaction tank 6, a filtration section 7, and a disinfection section 8 in the order of the flow of sewage, wherein the filtration section 7 is independent. Of the anaerobic treatment tanks 4 and 5 or the biological reaction tank 6 together with the disinfecting portion 8 via a partition 9. This is the septic tank 1. That is, the box-shaped container 11 does not also serve as a partition wall for partitioning the inside of the wastewater purification tank, but forms an independent one tank (or chamber) by itself.
【０００５】箱状容器１１の形状は、上面なしの略円柱
状、略直方体状等の種々の容器を用いることができ、好
ましくは、前面、後面、左面、右面及び底面の５面をも
つ箱状容器である。また、箱状容器１１の下部（底部で
もよい）で濾過部７の下部もしくは下方に相当する部位
には、通常、エアリフトポンプの吸込口１５を設ける。As the shape of the box-shaped container 11, various kinds of containers such as a substantially cylindrical shape without a top surface and a substantially rectangular parallelepiped shape can be used, and preferably, a box having five surfaces of a front surface, a rear surface, a left surface, a right surface and a bottom surface. It is a container. In addition, a suction port 15 of an air lift pump is usually provided at a portion corresponding to a lower portion of the box-shaped container 11 (which may be a bottom portion) or a lower portion of the filtering unit 7.
【０００６】また、濾過部７には、好ましくは、充填材
（濾材；担体；生物担体；接触材ともいわれる）を充填
した濾過床７ａを形成させ、この濾過床７ａの下部又は
下方には洗浄用散気部材１３を配置する。In addition, the filter section 7 is preferably provided with a filter bed 7a filled with a filler (filter material; carrier; biological carrier; also referred to as contact material), and washing is performed below or below the filter bed 7a. The air diffuser 13 is arranged.
【０００７】また、生物反応槽６には、通常、充填材
（生物担体）を充填した生物反応床６ａを形成させ、こ
の生物反応床６ａの下部又は下方には反応用散気部材１
２を配置する。Further, the biological reaction tank 6 is usually provided with a biological reaction bed 6a filled with a packing material (biological carrier), and the reaction diffusion member 1 is provided below or below the biological reaction bed 6a.
Place 2.
【０００８】[0008]
【作用】本発明の汚水浄化槽においては、濾過部７（及
び槽毒部８）は、嫌気処理槽４，５又は生物反応槽６の
いずれかの槽の一画に配置した箱状容器１１の中に形成
させるので、濾過部７（及び槽毒部８）に付帯する他の
部品や部材を予め組み込んで、ユニット化（濾過ユニッ
ト化）することができる。そうすれば、作業空間の小さ
い汚水浄化槽内での濾過部７（及び槽毒部８）の組み立
ては不要となり、組立て性に優れるものとなる。また、
濾過部７（及び槽毒部８）は、独立した箱状容器１１内
に形成させるので、汚水の主たる流れ、すなわち、「嫌
気処理槽→生物反応槽→濾過部→消毒部」の流れを変え
ずに、濾過部７（及び槽毒部８）を嫌気処理槽４，５や
生物反応槽６の中に配置することができる。すなわち、
汚水浄化槽１内に配置する濾過部７（及び槽毒部８）の
場所の制約は少なくなる。In the sewage purification tank of the present invention, the filtering section 7 (and the tank poisoning section 8) is the box-shaped container 11 arranged in one of the anaerobic treatment tanks 4 and 5 or the biological reaction tank 6. Since it is formed inside, other parts and members incidental to the filtration part 7 (and the tank poisoning part 8) can be incorporated in advance to form a unit (a filtration unit). By doing so, it is not necessary to assemble the filtering unit 7 (and the tank poisoning unit 8) in the sewage purification tank having a small working space, and the assembling property is excellent. Also,
Since the filtration unit 7 (and the tank poisoning unit 8) is formed in the independent box-shaped container 11, the main flow of sewage, that is, "anaerobic treatment tank → biological reaction tank → filtration unit → disinfection unit" is changed. Instead, the filtration unit 7 (and the tank poisoning unit 8) can be arranged in the anaerobic treatment tanks 4 and 5 and the biological reaction tank 6. That is,
There are less restrictions on the location of the filtering unit 7 (and the tank poisoning unit 8) arranged in the wastewater purification tank 1.
【０００９】[0009]
【発明の実施の形態】以下、発明の実施の形態を図面に
より更に具体的に説明する。図１は本発明に係る第１例
の汚水浄化槽である。図示するように、汚水浄化槽１
は、上流側から、汚水中の沈降性固形物を重力下に沈降
させるとともに嫌気処理を行なう第一固液分離槽（第一
嫌気処理槽）４と、前槽からの移流液をさらに固液分離
し上澄液を次槽へ移流させる第二固液分離槽（第二嫌気
処理槽）５と、前槽からの移流液を生物的に好気処理す
る生物反応床６ａを有する生物反応槽６と、前槽からの
生物性汚泥（浮遊性懸濁物質、ＳＳともいう）混じりの
移流液を濾過する濾過床７ａを有し濾液を次槽へ移流さ
せる濾過部７と、流入してきた濾液を消毒処理する消毒
部８とで構成される。ここで、生物反応槽６の上部一画
に、前面、後面、左面、右面及び底面の５面をもつ箱状
容器１１を配置し、その箱状容器１１の中に、仕切板９
を介して濾過部７と消毒部８とを配置している。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described more specifically with reference to the drawings. FIG. 1 shows a sewage purification tank of a first example according to the present invention. As shown, sewage septic tank 1
Is a first solid-liquid separation tank (first anaerobic treatment tank) 4 that performs anaerobic treatment from the upstream side while settling solid matter in sewage under gravity, and the advancing liquid from the previous tank is further solid-liquid. A biological reaction tank having a second solid-liquid separation tank (second anaerobic treatment tank) 5 for separating and advancing the supernatant liquid to the next tank, and a biological reaction bed 6a for biologically and aerobically treating the advancing liquid from the previous tank 6, a filtration unit 7 having a filter bed 7a for filtering an advancing liquid mixed with biological sludge (suspended suspended solids, also called SS) from the previous tank, and advancing the filtrate to the next tank, and an inflowing filtrate And a disinfecting section 8 for disinfecting. Here, a box-shaped container 11 having a front surface, a rear surface, a left surface, a right surface, and a bottom surface is arranged in an upper portion of the biological reaction tank 6, and the partition plate 9 is placed in the box-shaped container 11.
The filtering unit 7 and the disinfecting unit 8 are arranged via the.
【００１０】箱状容器１１は、汚水浄化槽１の槽体内壁
や仕切板に固定する。また、図から分かるように、箱状
容器１１の底部は汚水浄化槽１の底部とは接していな
い。また、槽体の内壁と箱状容器１１の外側とが接する
部分での水封は必要がない。箱状容器１１には、生物反
応槽６で処理された液から流入口となる移流口１６ａ
と、濾過部７で濾過された液を消毒部へ移すための移流
口１６ｂとが設けられ、生物反応槽６で処理された汚水
は移流口１６ａを経て濾過部７へ移流し、濾過部７で濾
過された液は移流口１６ｂを経て、同じ箱状容器１１内
の消毒部８に入り消毒された後、処理水として出口３か
ら放流される。The box-shaped container 11 is fixed to the inner wall of the sewage purification tank 1 or a partition plate. Further, as can be seen from the figure, the bottom of the box-shaped container 11 is not in contact with the bottom of the sewage purification tank 1. Further, it is not necessary to seal the water at the portion where the inner wall of the tank body and the outside of the box-shaped container 11 are in contact with each other. The box-shaped container 11 has an advection port 16a serving as an inflow port for the liquid processed in the biological reaction tank 6.
And an advection port 16b for transferring the liquid filtered by the filtration unit 7 to the disinfection unit, and the sewage treated in the biological reaction tank 6 is admitted to the filtration unit 7 through the admission port 16a, and the filtration unit 7 The liquid filtered in (1) passes through the advection port 16b, enters the disinfection section 8 in the same box-shaped container 11, is sterilized, and is then discharged from the outlet 3 as treated water.
【００１１】なお、図１の例では、消毒部８は箱状容器
１１内に設置したが、これは箱状容器１１外に独立に設
置してもよい。In the example of FIG. 1, the disinfecting section 8 is installed inside the box-shaped container 11, but it may be installed outside the box-shaped container 11 independently.
【００１２】生物反応床６ａには流動性充填材を充填
し、その下部に反応用散気部材１２を設けている。ここ
で、流動性充填材とは、散気すれば液とともに流動する
性状の充填材を意味し、比重では概ね０．８０〜１．１
０のものである。なお、充填材の比重は、これを沸騰し
た蒸留水中で３０分間煮沸し、冷やした後に測定する。The biological reaction bed 6a is filled with a fluid filler, and a reaction air diffuser 12 is provided below it. Here, the fluid filler means a filler that is capable of flowing together with a liquid when diffused, and has a specific gravity of approximately 0.80 to 1.1.
It is 0. The specific gravity of the filler is measured after boiling it in boiling distilled water for 30 minutes and cooling it.
【００１３】濾過部７の濾過床７ａには、通常処理時に
固定床を形成し、洗浄時に流動床を形成する沈降性充填
材（すなわち、散気すれば液とともに流動できるが散気
を停止すれば容易に沈降する性状で、比重では概ね１．
００〜１．２０のもの）を充填し、その下方に洗浄用散
気部材１３を設けている。また、濾過部７の下部には濾
過床７ａを洗浄（逆洗）したときにその洗浄排水を第一
固液分離槽４へ返送するためのエアリフトポンプ管１４
の吸込口１５が設けられている。エアリフトポンプ管１
４の大部分は箱状容器１１外の生物反応槽６の一画に配
置されている。The filter bed 7a of the filter section 7 is a settling filler that forms a fixed bed during normal treatment and forms a fluidized bed during washing (that is, if air is diffused, it can flow with the liquid but stop the air diffusion). If it is easily settled, its specific gravity is about 1.
No. 00 to 1.20), and the cleaning air diffuser 13 is provided below it. In addition, an air lift pump pipe 14 for returning the washing wastewater to the first solid-liquid separation tank 4 when the filtration bed 7a is washed (backwashed) in the lower portion of the filtration unit 7.
Is provided with a suction port 15. Air lift pump pipe 1
Most of 4 is arranged in a part of the biological reaction tank 6 outside the box-shaped container 11.
【００１４】次に、図１を参照しながら、汚水浄化槽１
における生物反応槽６及び濾過部７の運転について説明
する。通常の汚水処理時（生物反応時）には、汚水又は
排水を好気処理するために、生物反応床６ａの下部に設
けている反応用散気部材１２から常時空気を吐出させ
る。その際、生物反応床６ａ中の生物担体は散気による
撹拌効果で上下に流動する。濾過床７ａの洗浄時には、
洗浄用散気部材１３から空気を吐出させても構わない
が、通常は、吐出させない。生物反応床６ａにおいて
は、主として、有機物の酸化・分解及びアンモニアの硝
化が進行する。Next, referring to FIG. 1, the sewage purification tank 1
The operation of the biological reaction tank 6 and the filtration unit 7 in 1 will be described. During normal sewage treatment (during biological reaction), air is constantly discharged from the reaction air diffuser 12 provided at the bottom of the biological reaction bed 6a in order to aerobically treat sewage or waste water. At that time, the biological carrier in the biological reaction bed 6a flows up and down due to the stirring effect of aeration. When cleaning the filter bed 7a,
Air may be discharged from the cleaning air diffuser 13, but it is not normally discharged. In the biological reaction bed 6a, oxidation / decomposition of organic matter and nitrification of ammonia mainly proceed.
【００１５】通常の汚水処理時、濾過床７ａでは生物反
応床６ａから移流してきた液で下向きに流れ、持ち越み
酸素（溶存酸素）で好気反応が継続するとともに、静止
状態の充填材（濾材）でＳＳを効率よく捕捉（濾過）す
る。濾過床７ａは徐々に閉塞してくるので、濾過床７ａ
の閉塞解除と堆積汚泥の除去のため、定期的に洗浄す
る。洗浄時は、濾過床７ａの下方に設けている洗浄用散
気部材１３から空気を吐出させ、濾過床７ａ中の濾材を
流動させ、捕捉されているＳＳを遊離させる。遊離した
ＳＳ及び堆積汚泥を含む洗浄排水はエアリフトポンプ１
４を用いて引き抜き、返送管１８を介して第一固液分離
槽４へ戻す。During normal sewage treatment, the liquid advancing from the biological reaction bed 6a flows downward in the filtration bed 7a, and the aerobic reaction continues due to carry-over oxygen (dissolved oxygen), and the stationary packing material ( SS is efficiently captured (filtered) by a filter material. Since the filter bed 7a is gradually closed, the filter bed 7a
Regularly wash to remove the blockage and remove accumulated sludge. At the time of cleaning, air is discharged from the cleaning air diffuser 13 provided below the filtration bed 7a to cause the filter medium in the filtration bed 7a to flow and release the trapped SS. Washing wastewater containing liberated SS and accumulated sludge is air lift pump 1
4 and then return to the first solid-liquid separation tank 4 via the return pipe 18.
【００１６】濾過床７ａから濾材がエアリフトポンプ１
４へ流れ込むのを防ぐために、濾過床７ａ下部には濾材
を通さない多孔性板材を配置しておく。通常の汚水処理
時、濾過床７ａを流れる液は下向きであり、その下向流
で濾材が圧されて捕捉（濾過）効率が上がる。The filter material from the filter bed 7a is the air lift pump 1
In order to prevent it from flowing into the filter 4, a porous plate material that does not pass the filter material is arranged below the filter bed 7a. During normal sewage treatment, the liquid flowing through the filter bed 7a is downward, and the downward flow causes the filter medium to be pressed, increasing the trapping (filtration) efficiency.
【００１７】なお、上で述べた生物反応床６ａは、通常
の汚水処理時は流動床としたが、これは流動床に限定さ
れず、例えば、波板状濾材、板状ヘチマ様濾材及び紐状
濾材のような接触材を充填した固定床であってもよい。
更に、濾過床７ａの充填材は沈降性充填材としたが、こ
れも沈降性充填材に限定されず、例えば、浮上性充填材
（散気すれば液とともに流動できるが散気を停止すれば
容易に浮上する性状の充填材で、比重では概ね０．８０
〜１．００のもの）であってもよい。The biological reaction bed 6a described above is a fluidized bed at the time of normal sewage treatment, but it is not limited to the fluidized bed. For example, a corrugated plate-like filter material, a plate-like loofah-like filter material and a string are used. A fixed bed filled with a contact material such as a filter medium may be used.
Further, although the filler of the filter bed 7a is settling filler, it is not limited to the settling filler, and for example, a floating filler (if it is diffused, it can flow with the liquid but stop the diffusion. A filling material that floats easily and has a specific gravity of approximately 0.80.
~ 1.00).
【００１８】図２は本発明に係る他の例の汚水浄化槽で
ある。図１の例との大きな違いは、箱状容器１１を、生
物反応槽６の一画ではなく、第一固液分離槽４の一画に
配置した点である。ここで、汚水の主たる流れは、「嫌
気処理槽→生物反応槽→濾過部→消毒部」であり、図１
の流れと同様である。FIG. 2 shows another example of a wastewater purification tank according to the present invention. The major difference from the example of FIG. 1 is that the box-shaped container 11 is arranged not in one stroke of the biological reaction tank 6 but in one stroke of the first solid-liquid separation tank 4. Here, the main flow of sewage is “anaerobic treatment tank → biological reaction tank → filtration section → disinfection section”.
It is similar to the flow of.
【００１９】[0019]
【発明の効果】本発明の汚水浄化槽によれば、槽体の内
壁と濾過部を構成する箱状容器の外側との間に水封を要
しない。また、箱状容器に予め必要な部品及び部材を組
み込んでユニット化すれば、作業空間の小さい汚水浄化
槽内での組み立てが不要であり、組立て性に優れる。良
好な水質の処理水も得られるまた、濾過部（及び消毒
部）は、独立した箱状容器内に形成されるので、汚水浄
化槽内での濾過部（及び消毒部）の配置は制約が少な
い。According to the sewage purification tank of the present invention, no water seal is required between the inner wall of the tank body and the outside of the box-shaped container constituting the filter section. Further, if necessary components and members are incorporated in advance in the box-shaped container to form a unit, assembly in a sewage purification tank with a small working space is not required, resulting in excellent assemblability. Also, treated water of good quality can be obtained. Moreover, since the filtration part (and the disinfection part) is formed in an independent box-shaped container, there are few restrictions on the placement of the filtration part (and the disinfection part) in the septic tank. .
【００２０】更に付言すれば、汚水浄化槽による浄化処
理において、濾過部や消毒部等の仕上げ工程は、従来、
汚水浄化槽の出口付近に設置されることが一般的であ
り、濾過部や消毒部が汚水浄化槽の出口付近に設置され
ると、マンホールの配置位置によっては槽内の観察が困
難な場合もあった。しかし、本発明によれば、汚水浄化
槽の出口付近を避けて濾過部を配置することもできるた
め、上記問題を解消できる。In addition, in the purification process by the sewage septic tank, the finishing process of the filtering part, the disinfecting part, etc. is conventionally performed.
It is generally installed near the outlet of the sewage purification tank, and if the filtering section and the disinfection section are installed near the outlet of the sewage purification tank, it may be difficult to observe the inside of the tank depending on the location of the manhole. . However, according to the present invention, the above-mentioned problem can be solved because the filtering portion can be arranged so as to avoid the vicinity of the outlet of the wastewater purification tank.
【図１】本発明に係る第１例の汚水浄化槽で、（イ）は
平面図、（ロ）は手前側から見た構成略図。矢印は液流
を示す。FIG. 1 is a plan view of (a) a schematic plan view of the sewage septic tank of the first example according to the present invention as viewed from the front side. Arrows indicate liquid flow.
【図２】本発明に係る第２例の汚水浄化槽で、（イ）は
平面図、（ロ）は手前側から見た構成略図。矢印は液流
を示す。FIG. 2 is a second embodiment of the wastewater septic tank according to the present invention, in which (a) is a plan view and (b) is a schematic configuration view as seen from the front side. Arrows indicate liquid flow.
１：汚水浄化槽
２：入口 ３：出口
４：第一固液分離槽（第一嫌気処理槽）
５：第二固液分離槽（第二嫌気処理槽）
６：生物反応槽 ６ａ：生物反応床
７：濾過部 ７ａ：濾過床
８：消毒部 ９：仕切（仕切板）
１０：薬筒 １１：箱状容器
１２：反応用散気部材（散気管）
１３：洗浄用散気部材（散気管）
１４：（洗浄用）エアリフトポンプ／エアリフトポンプ
管
１５：吸込口 １６：移流口
１７：マンホール １８：返送管1: Sewage purification tank 2: Inlet 3: Outlet 4: First solid-liquid separation tank (first anaerobic treatment tank) 5: Second solid-liquid separation tank (second anaerobic treatment tank) 6: Biological reaction tank 6a: Biological reaction bed 7: Filtration part 7a: Filtration bed 8: Disinfection part 9: Partition (partition plate) 10: Medicine cylinder 11: Box-shaped container 12: Diffusing member for reaction (diffusing pipe) 13: Diffusing member for cleaning (diffusing pipe) 14: (For cleaning) air lift pump / air lift pump pipe 15: suction port 16: advection port 17: manhole 18: return pipe
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山下 宏 茨城県下館市大字下江連1250番地 株式会 社日立ハウステック結城工場内 Ｆターム(参考） 4D027 AA02 AA12 AB06 AB12 4D041 BA01 BC01 BC11 CA08 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Hiroshi Yamashita 1250 Shimoeren, Shimodate City, Ibaraki Prefecture Stock Association Hitachi House Tech Yuki factory F-term (reference) 4D027 AA02 AA12 AB06 AB12 4D041 BA01 BC01 BC11 CA08
Claims (3)
部を備える汚水浄化槽であって、 前記濾過部は、単独に、あるいは仕切を介して前記消毒
部と共に、嫌気処理槽又は生物反応槽のいずれかの槽の
一画に配した箱状容器の中に形成されている汚水浄化
槽。1. A sewage purification tank comprising an anaerobic treatment tank, a bioreaction tank, a filter section and a disinfection section, wherein the filtration section is used alone or together with the disinfection section through a partition to provide an anaerobic treatment tank or a biological reaction tank. A sewage purification tank formed in a box-shaped container arranged in one of the tanks.
底面の５面をもつ容器で、その下部にはエアリフトポン
プの吸込口が配されている、請求項１の汚水浄化槽。2. The sewage purification tank according to claim 1, wherein the box-shaped container is a container having a front surface, a rear surface, a left surface, a right surface, and a bottom surface, and a suction port of an air lift pump is arranged at a lower portion thereof.
の下部又は下方には洗浄用散気部材が配されている、請
求項１又は２の汚水浄化槽。3. The sewage purification tank according to claim 1 or 2, wherein a filtration bed is formed in the filtration section, and a cleaning air diffuser is arranged below or below the filtration bed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002049836A JP4416984B2 (en) | 2002-02-26 | 2002-02-26 | Sewage septic tank with filtration unit in the tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002049836A JP4416984B2 (en) | 2002-02-26 | 2002-02-26 | Sewage septic tank with filtration unit in the tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003245680A true JP2003245680A (en) | 2003-09-02 |
| JP4416984B2 JP4416984B2 (en) | 2010-02-17 |
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ID=28662248
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002049836A Expired - Fee Related JP4416984B2 (en) | 2002-02-26 | 2002-02-26 | Sewage septic tank with filtration unit in the tank |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006048929A1 (en) * | 2004-11-04 | 2006-05-11 | Nanshin Co., Ltd. | Eccentric weight, vibrating motor, and mobile device |
| JP2007237147A (en) * | 2006-03-13 | 2007-09-20 | Hitachi Housetec Co Ltd | Aerobic treatment tank and septic tank containing it |
| JP2010234342A (en) * | 2009-03-31 | 2010-10-21 | Kubota Corp | Septic tank |
| JP2012213699A (en) * | 2011-03-31 | 2012-11-08 | Kubota Corp | Septic tank |
| JP2016185522A (en) * | 2015-03-27 | 2016-10-27 | 株式会社クボタ | Water treatment apparatus and water treatment method |
| CN113264624A (en) * | 2021-05-30 | 2021-08-17 | 刘彩虹 | Gate water purifying device for hydraulic engineering and using method thereof |
-
2002
- 2002-02-26 JP JP2002049836A patent/JP4416984B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006048929A1 (en) * | 2004-11-04 | 2006-05-11 | Nanshin Co., Ltd. | Eccentric weight, vibrating motor, and mobile device |
| JP2007237147A (en) * | 2006-03-13 | 2007-09-20 | Hitachi Housetec Co Ltd | Aerobic treatment tank and septic tank containing it |
| JP2010234342A (en) * | 2009-03-31 | 2010-10-21 | Kubota Corp | Septic tank |
| JP2012213699A (en) * | 2011-03-31 | 2012-11-08 | Kubota Corp | Septic tank |
| JP2016185522A (en) * | 2015-03-27 | 2016-10-27 | 株式会社クボタ | Water treatment apparatus and water treatment method |
| CN113264624A (en) * | 2021-05-30 | 2021-08-17 | 刘彩虹 | Gate water purifying device for hydraulic engineering and using method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4416984B2 (en) | 2010-02-17 |
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