JPS6351994A - System for treating drainage - Google Patents
System for treating drainageInfo
- Publication number
- JPS6351994A JPS6351994A JP61195266A JP19526686A JPS6351994A JP S6351994 A JPS6351994 A JP S6351994A JP 61195266 A JP61195266 A JP 61195266A JP 19526686 A JP19526686 A JP 19526686A JP S6351994 A JPS6351994 A JP S6351994A
- Authority
- JP
- Japan
- Prior art keywords
- aeration
- section
- settling
- sludge
- sewage treatment
- 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
- 238000005273 aeration Methods 0.000 claims abstract description 96
- 239000010802 sludge Substances 0.000 claims abstract description 61
- 238000005192 partition Methods 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000005276 aerator Methods 0.000 claims abstract description 5
- 239000010865 sewage Substances 0.000 claims description 27
- 238000004062 sedimentation Methods 0.000 claims description 11
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 abstract description 7
- 239000006228 supernatant Substances 0.000 abstract description 3
- 238000000638 solvent extraction Methods 0.000 abstract 1
- 239000002351 wastewater Substances 0.000 description 8
- 239000005416 organic matter Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、有機性汚濁物質を含む都市下水、産業廃水又
はそれに類する有機性汚水を処理する装置に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for treating urban sewage, industrial wastewater, or similar organic wastewater containing organic pollutants.
第５図に基づいて従来技術を説明する。第５図は沈殿部
の下部と曝気部が連通し、沈殿部がスラッジブランケッ
トゾーンを形成するように構成された従来の曝気部と沈
殿部を一体化した汚水処理装置の一例である。この例で
は汚水は汚水流入管１から曝気部２に流入し、曝気装置
３から導入される空気の攪拌作用により汚泥と混合され
、流入水の汚濁有機物は好気的に分解される。そして汚
水と汚泥の混合液は４気部２と沈殿部４の連通部５を通
り、沈殿部４に導かれ、処理上澄液と汚泥とに分離され
た後、汚泥は曝気部２にポンプ又はエアリフトなどの返
送手段１５により戻される。該沈殿部４は曝気部２から
混合液が流入する部分において狭く、上方に向かうに従
がい拡がっているため、汚泥はスラッジブランケットゾ
ーンを形成する。汚水がこのブランケットゾーンを通過
するときに汚水中に含まれている微細なフロックも完全
にブランケットゾーンに捕捉されるため、この方式では
極めて清澄な処理水を得ることができる。The prior art will be explained based on FIG. FIG. 5 is an example of a conventional sewage treatment device that integrates an aeration section and a settling section, in which the lower part of the settling section and the aeration section communicate with each other, and the settling section forms a sludge blanket zone. In this example, sewage flows into the aeration section 2 from the sewage inflow pipe 1, and is mixed with sludge by the stirring action of air introduced from the aeration device 3, and polluted organic matter in the inflow is aerobically decomposed. Then, the mixed liquid of sewage and sludge passes through the communication part 5 between the aeration part 2 and the settling part 4, is led to the settling part 4, and is separated into treated supernatant liquid and sludge, and then the sludge is pumped to the aeration part 2. Alternatively, it is returned by return means 15 such as an air lift. The settling section 4 is narrow at the part where the mixed liquid flows from the aeration section 2 and widens upward, so that the sludge forms a sludge blanket zone. When the wastewater passes through this blanket zone, the fine flocs contained in the wastewater are completely captured by the blanket zone, so this system can provide extremely clear treated water.
又、曝気部と沈殿部が一体化しているため、装置がコン
パクトであるという特徴も備えている。Additionally, since the aeration section and precipitation section are integrated, the device is compact.
しかしながら本方式には次のような問題点がある。However, this method has the following problems.
（１） スラッジブランケットを形成させるための十
分な条件が把握されていないため、運転条件によっては
、スラッジブランケットが全く形成されなかったり、ま
た逆に、汚泥の大部分が沈殿部に溜り、：曝気部の汚泥
が減少するため、処理が不安定となＳことがあげられる
。(1) Since the sufficient conditions for forming a sludge blanket are not understood, depending on the operating conditions, a sludge blanket may not be formed at all, or conversely, most of the sludge may remain in the sedimentation area, resulting in aeration. Because the amount of sludge in the area decreases, the treatment becomes unstable.
（２）又、沈殿部の汚泥をサイフオンあるいはボンデで
曝気部に返送する際に水みちができ部分的な流れに沿っ
た部分の汚泥しか返送されないため、沈殿部の汚泥の流
動が不十分となシ、沈殿部に、腐敗汚泥が浮上する。(2) Also, when the sludge in the settling section is returned to the aeration section using a siphon or bonder, a water channel is created and only the sludge that follows the partial flow is returned, resulting in insufficient flow of the sludge in the settling section. However, putrefactive sludge rises to the surface in the sedimentation area.
本発明は、従来技術における上記問題点、特に十分なス
ラッジブランケットゾーンの形成と、沈殿部汚泥の適切
な流動と曝気部への返送を簡易にかつ円滑に行なわせる
ようにした有機性汚水の処理装置を提供することを目的
としたものである。The present invention addresses the above-mentioned problems in the prior art, and in particular, treats organic sewage by easily and smoothly forming a sufficient sludge blanket zone, appropriately flowing the settling sludge, and returning it to the aeration section. The purpose is to provide equipment.
本発明は、反応槽の上部から傾斜をもたせた仕切り６を
設け、上部を沈殿部、残部を曝気部にするとともに、沈
殿部下部と曝気部が連通し、かつ、ｌ＠気部に上部およ
び下部で連通ずる仕切り７を前記仕切り６とほゞ平行に
設け、該仕切りで仕切られる曝気部の２つの空間２．２
″を形成せしめ、下部曝気部２内に沈殿部Ｉｎ気装置を
設けるとともに、沈殿部と曝気部が連通ずる開口部の最
小面積が、曝気部内の汚泥沈降速度：も大きい水面積負
荷になるように設定すると共Ｋ、沈殿部上部の水面積負
荷を前記汚泥沈降速度より小さくなるように設定し、ス
ラッジブランケット層を形成するように構成することを
特徴とする汚水処理装置である。In the present invention, a partition 6 is provided with an inclination from the upper part of the reaction tank, the upper part is used as a settling part, and the remaining part is made into an aeration part, and the lower part of the settling part and the aeration part are communicated, and the upper and A partition 7 that communicates with the lower part is provided almost parallel to the partition 6, and the two spaces 2.2 of the aeration section are partitioned by the partition.
'', and a settling part In air device is provided in the lower aeration part 2, and the minimum area of the opening where the settling part and the aeration part communicate is set so that the sludge settling rate in the aeration part becomes a large water area load. The sewage treatment apparatus is characterized in that the area load of water in the upper part of the settling section is set to be smaller than the sludge settling rate, and a sludge blanket layer is formed.
本発明を図面に基づいて詳しく説明する。第１図は本発
明の装置の基本構成を示したものであり、第２図は沈殿
部にレーキを設け、かつ汚水の流入口を側壁下部から曝
気装置に向けて積向きに流れるようにしたもの、第３図
は曝気部内仕切り壁の上部を可動堰とし、かつ仕切壁下
部連通部内側に曝気装置としてジェットエアレージ３ン
装置を設けたもの、ｔＪＩＪ４図は装置を対称形とし、
かつ中央に曝気装置として上吹き出しの水中エアレータ
−を設けるとともに、曝気およびレーキの稼動を予め設
定したプログラムに従い、線動するようにコントローμ
装置を設けたものである。The present invention will be explained in detail based on the drawings. Figure 1 shows the basic configuration of the device of the present invention, and Figure 2 shows a system in which a rake is provided in the sedimentation section, and the wastewater inlet is made to flow in a stacking direction from the bottom of the side wall toward the aeration device. In Figure 3, the upper part of the partition wall inside the aeration section is a movable weir, and a jet airage 3-in device is installed as an aeration device inside the lower part of the partition wall communication part, and in Figure 4, the device is symmetrical,
In addition, a top-blowing submersible aerator is installed as an aeration device in the center, and the aeration and rake operation is controlled linearly according to a preset program.
It is equipped with a device.
本発明の基本構成は第１図に示すように反応ｆ！１５の
上部を仕切り板６′で仕切り、そこから傾斜をもたせ仕
切り壁６を少なくとも曝気部２．２′底部よ１１ｍ以上
の高さ迄、好ましくは２ｍ〜３ｆｆｌの高さまで延長し
、仕切り壁６で仕切られた上部を沈殿部４とし、下部お
よび残部を曝気部２．２′とし、かつ沈殿部４の下部と
曝気部２′の間に開口部５を設けるとともに、曝気部２
．２′の上部および下部で該２つの曝気部が連通する仕
切り壁７を設け、該仕切壁７で区切られた曝気部内の２
つの空間の、沈殿部と連通ずる空間２′と反対側の曝気
部２内に、曝気装置３を設けている。この装置において
、汚水は汚水流入管１から曝気部２の底部に上向きにま
たは第２図に示すように沈殿部４と曝気部２′が連通ず
る空間の側壁下部より底部に沿って曝気装置５の方向に
横向きに流れるように流入口８を設けている。汚水の流
入０８は曝気部２底部または側壁下部に必ずしも設ける
必要はなく、曝気部２の上部から流入させても良い。但
し、曝気を間欠的に行なう場合には、汚水の流入口８を
曝気部２底部又は、沈殿部４下部の開口部５のある側壁
下部に設けることが肝要である。これは、曝気停止時に
おいても、連続的に流入する汚水を、沈積した汚泥ゾー
ンを通過させることにより、嫌気的条件での脱窒および
あるいは生物学的脱リン反応により、汚水中に含まれる
有機物が分解されるとともに、微細なＳＳも捕捉するこ
とが可能となるためである。The basic configuration of the present invention is as shown in FIG. 1, which shows the reaction f! The upper part of 15 is partitioned by a partition plate 6', and the partition wall 6 is inclined from there and extends to a height of at least 11 m or more from the bottom of the aeration part 2.2', preferably to a height of 2 m to 3 ffl. The upper part partitioned by
．． A partition wall 7 is provided at the upper and lower parts of 2' so that the two aeration parts communicate with each other, and the two aeration parts separated by the partition wall 7 are
An aeration device 3 is provided in the aeration section 2 on the opposite side of the space 2' which communicates with the precipitation section. In this device, sewage flows upward from the sewage inflow pipe 1 to the bottom of the aeration section 2, or as shown in FIG. An inlet 8 is provided so that the water flows horizontally in the direction of. The inflow 08 of wastewater does not necessarily need to be provided at the bottom of the aeration section 2 or at the lower part of the side wall, and may be introduced from the top of the aeration section 2. However, when aeration is performed intermittently, it is important to provide the wastewater inlet 8 at the bottom of the aeration section 2 or at the lower part of the side wall of the lower part of the settling section 4 where the opening 5 is located. Even when the aeration is stopped, the organic matter contained in the wastewater is removed by denitrification and/or biological dephosphorization reactions under anaerobic conditions by passing the continuously flowing wastewater through the sludge zone. This is because it becomes possible to capture minute SS as well as decompose it.
曝気部２に流入した汚水は、曝気部２内に設けられた曝
気部ｆｆ５により、好気的処理が行なわれ、有機物が分
解されるが、汚水と汚泥の混合液の流れは、曝気部２か
ら仕切壁７の上部を通って、他の曝気部空間２＃に入シ
、沈殿部４と曝気部２“を仕切る仕切り壁６に沿って流
下し、沈殿部下部の空間２′に入る。この流れの大部分
は、仕切り壁７の下部の連通部を通り、再び曝気装置３
のある空間２に循環されるが、流入する汚水に相当する
承が、沈殿部４と曝気部２′の開口部５を通り、沈殿部
４に流入し、ここで汚泥と処理水に分離されて、処理上
澄水は、沈殿部４上部に設けられた越流口９より処理水
として放流される。ここで沈殿部下部にスラッジブラン
ケットゾーンを形成させることによυ、汚水と汚泥の混
合液は、開口部５を通して沈殿部４上部に流出する際に
、清澄濾過作用を受け、清澄な処理水を得ることになる
が、安定したスラッジブランケットゾーンを形成させる
ためには、沈殿部間口部５における水面積負荷を曝気部
内仕切の汚泥沈降速度よりも大きくとシ、また沈殿部上
面の水面積負荷を該汚泥の沈降速度よりも小さくとる必
要がある。一般的には汚泥の沈降速度は３０〜ａｏｍ／
日の範囲（ＭＬ、８８１０００〜３０００Ｗ９／ｌ）に
あることから、開口部５の断面積における水面積負荷を
流入汚水量に対し４０ ＠”／＠”・８以上、好ましく
は６０ ｍ”／ｒｎ”・８以上となるように設定し、か
つ沈殿部４上部の水面積負荷を５０７７１３／ ７Ｆ！
”・日板下、好ましくは２０ ｔｒＬ”／＠”・日板下
とすることで安定したブランケットゾーンを形成させる
ことができる。実際には、汚泥の沈降分離特性は、流入
水質、水温、負荷条件等により、変化するが、装置の製
作においてはその汚泥性状を考慮し、汚泥の沈降分離が
十分性なわれる値に沈殿部上部の水面積負荷を決めると
ともに、沈殿部下部の開口部５面積を沈殿部表面面積の
１／暴以下にすることで、守定したスラッジブランケッ
トゾーンの形成は達成される。The sewage that has flowed into the aeration section 2 is subjected to aerobic treatment by the aeration section ff5 provided in the aeration section 2, and organic matter is decomposed. From there, it passes through the upper part of the partition wall 7, enters the other aeration section space 2#, flows down along the partition wall 6 that partitions the settling section 4 and the aeration section 2'', and enters the space 2' below the settling section. Most of this flow passes through the lower part of the partition wall 7 and returns to the aeration device 3.
The sludge corresponding to the inflowing sewage passes through the settling section 4 and the opening 5 of the aeration section 2' and flows into the settling section 4, where it is separated into sludge and treated water. The treated supernatant water is discharged as treated water from an overflow port 9 provided at the upper part of the settling section 4. By forming a sludge blanket zone in the lower part of the settling part, the mixed liquid of sewage and sludge is subjected to a clarifying filtration action when flowing out to the upper part of the settling part 4 through the opening 5, and clear treated water is produced. However, in order to form a stable sludge blanket zone, the water area load at the opening 5 of the settling section must be greater than the sludge settling rate in the aeration section inner partition, and the water area load on the top surface of the settling section must be increased. It is necessary to set it lower than the sedimentation rate of the sludge. Generally, the sedimentation rate of sludge is 30~aom/
(ML, 881000 to 3000W9/l), the water area load at the cross-sectional area of the opening 5 should be 40 m"/@"・8 or more, preferably 60 m"/rn, relative to the amount of inflowing sewage. ”・Set to be 8 or more, and the water area load on the upper part of settling section 4 is 507713/7F!
A stable blanket zone can be formed by setting the temperature below the day plate, preferably 20 trL/@”.In reality, the sedimentation and separation characteristics of sludge depend on the inflow water quality, water temperature, and load. Although it varies depending on the conditions, etc., when manufacturing the equipment, the properties of the sludge are taken into consideration, and the water area load at the top of the settling section is determined to a value that will ensure sufficient sedimentation and separation of the sludge, and the area of the opening 5 at the bottom of the settling section is determined. Formation of a controlled sludge blanket zone is achieved by making the sludge blanket area less than or equal to 1/3 of the surface area of the settling section.
一方、沈殿部４に形成されたスラッジブランケットゾー
ンは、汚泥がそのまま滞留するならば、やがては腐敗し
汚泥が浮上するとともに、処理水が悪化することになる
。これを避けるためには、スフツジプヲンケットを形成
した汚泥は、断えず、曝気部２′（戻り、循環されねば
ならない。一般的には、沈殿部４に蓄積した汚泥と曝気
部２の汚泥の密度差によシ、あるいは沈殿部下部に生じ
る偏流した流れにより、沈殿部汚泥は部分的ＫＩＩｉｉ
ｌ気部２に戻されるが、沈殿部汚泥全体を滞ることなく
一様に入れかえるのは従来技術では困難であった。本発
明では、第２図に示すごとく、沈殿部４に、沈殿部４と
＠気部２の開口部５に汚泥をかき寄せるレーキ１０を設
けることにより、沈殿部４下部に堆°積した汚泥を一様
に開口部５Ｋかき寄せ、曝気部２に循環させることがで
きる。ｉ＆、レーキを用いない場合には、第１図に示す
ごとく、曝架部２と沈殿部４を仕切る仕切壁６の傾斜角
Ａ２０〜８０＠好ましくは４５〜７０°にすることによ
り汚泥を一様に入れ変えることができる。On the other hand, if the sludge remains in the sludge blanket zone formed in the settling section 4, it will eventually rot, the sludge will float, and the treated water will deteriorate. In order to avoid this, the sludge that has formed a settling tank must be constantly returned to the aeration section 2' and circulated.Generally, the sludge that has accumulated in the settling section 4 and the aeration section The sludge in the settling area is partially KIIIiii due to the difference in the density of the sludge, or due to the uneven flow that occurs at the bottom of the settling area.
Although the sludge is returned to the air section 2, it has been difficult with conventional techniques to uniformly replace the entire settling section sludge without stagnation. In the present invention, as shown in FIG. 2, by providing the settling section 4 with a rake 10 that scrapes the sludge into the settling section 4 and the opening 5 of the air section 2, the sludge accumulated at the bottom of the settling section 4 can be removed. can be uniformly collected through the opening 5K and circulated to the aeration section 2. When a rake is not used, as shown in Fig. 1, the inclination angle of the partition wall 6 that partitions the exposure section 2 and the settling section 4 is set to A20 to 80 degrees, preferably 45 to 70 degrees, so that the sludge can be removed evenly. You can change it as you like.
特に間欠曝気法を用いる場合には、曝気停止時に、開口
部５下部の汚泥が沈降し、汚泥濃度が低下することによ
シ、沈殿部汚泥との密度差が大きくなり、沈殿部汚泥は
急速に曝気部２′に沈降することになる。この現象を効
率的に行なうためにも開口部５の高さは、＠気部底部よ
シ１ｍ以上、好ましくは２〜３７Ｆ！以上とる必要があ
る。In particular, when using the intermittent aeration method, when the aeration is stopped, the sludge at the bottom of the opening 5 settles and the sludge concentration decreases, resulting in a large density difference between the sludge and the settling section sludge, and the settling section sludge rapidly It will settle in the aeration section 2'. In order to efficiently carry out this phenomenon, the height of the opening 5 should be 1 m or more from the bottom of the air section, preferably 2 to 37F! It is necessary to take more than that.
曝気部内の仕切壁７は、第１〜第４図に示すごとく、沈
殿部仕切壁６と同じ勾配を与える必要はなく、水垂の仕
切壁でも良いが、曝気部内の循環が滑らかに行なわれ、
かつ曝気部＠３で生じた気泡が開口部５から沈殿部４に
顕出しないような形状をとらせることが必要である。As shown in Figs. 1 to 4, the partition wall 7 in the aeration section does not need to have the same slope as the sedimentation section partition wall 6, and may be a drip-shaped partition wall, but it is necessary to ensure smooth circulation within the aeration section. ,
In addition, it is necessary that the shape is such that bubbles generated in the aeration part @3 do not emerge from the opening part 5 into the precipitation part 4.
こうした空気の巻込みを制御するためＫは、第３図に示
すように仕切壁７上部の開口部に摺動可能なゲート１１
を設け、曝気部２“への液の循環量を制御することで可
能となる。また仕切壁７の位置は、曝気による循環が滑
らかに行なわれるのであれば、特に限定されることはな
いが、曝気部２＃および２′の空間を余シ大きくとると
、該内部の流れに乱れが生じることから、実験的には、
仕切壁７下部の位置は、曝気装置３が設けられる曝気部
２の水平方向長さを１とすると、曝気部２′の水平方向
長さを１／２以下にすれば流れは滑らかになる結果が得
られている。In order to control such air entrainment, K is provided with a gate 11 that can be slid into the opening at the top of the partition wall 7, as shown in FIG.
This can be achieved by controlling the amount of liquid circulating to the aeration section 2''.The position of the partition wall 7 is not particularly limited as long as it allows smooth circulation due to aeration. , If the space in the aeration parts 2# and 2' is made larger, turbulence will occur in the internal flow, so experimentally,
The position of the lower part of the partition wall 7 is such that if the horizontal length of the aeration section 2 where the aeration device 3 is installed is 1, then the flow will be smooth if the horizontal length of the aeration section 2' is reduced to 1/2 or less. is obtained.
曝気装置３は、特に限定される必要はないが、間欠曝気
を用いる場合は、水中エアレータ−、ジェットエアレー
ションあるいはノンクロッグヂュフユーザーのように閉
塞しない曝気装置を用いることが必要となる。また、＠
気装置３の位置は、仕切壁７で仕切られる曝気部の沈殿
部間口部５と反対側でちれば、特に限定する必要はなく
、第３図に示すごとく、仕切壁７下部の開口部の傍に、
ジェットエアＶ−ションヲ設置することも可能である。The aeration device 3 is not particularly limited, but when intermittent aeration is used, it is necessary to use an aeration device that does not block, such as a submersible aerator, jet aeration, or a non-clog-duff user. Also,@
The position of the aeration device 3 is not particularly limited as long as it is located on the side opposite to the sedimentation section opening 5 of the aeration section partitioned by the partition wall 7, and as shown in FIG. Beside the
It is also possible to install a jet air V-section.
本発明の反応槽は、第１〜第３図に示すものを基本形と
するが、第４図に示すごとく、中央の側壁をとシ、左右
対照の矩形槽または円形哨も可能である。The basic shape of the reaction tank of the present invention is shown in FIGS. 1 to 3, but as shown in FIG. 4, it is also possible to create a rectangular tank or a circular tank with left and right symmetry by removing the central side wall.
また間欠曝気を用いるときは、曝気の作動／停止および
／または沈殿池レーキ１０の稼動を予め設定したプログ
ラムに従って作動するようにしたデログヲムコントロー
／Ｉ／１２を設けて運転することも可能である。In addition, when using intermittent aeration, it is also possible to operate by installing a derogom control/I/12 that operates according to a preset program for starting/stopping the aeration and/or operating the settling tank rake 10. be.
第１図、第２図、第３図及び第４図は夫々異なる本発明
の汚水処理装置を説明するための図面、第５図は従来の
汚水処理装置を説明するための図面である。FIG. 1, FIG. 2, FIG. 3, and FIG. 4 are drawings for explaining different sewage treatment apparatuses of the present invention, and FIG. 5 is a drawing for explaining a conventional sewage treatment apparatus.
Claims (1)
け、上部を沈殿部、残部を曝気部にするとともに、沈殿
部下部と曝気部が連通し、かつ曝気部に上部および下部
で連通する仕切り（７）を前記仕切り（６）とほゞ平行
に設け、該仕切りで仕切られる曝気部（２）、（２″）
を形成せしめ、下部曝気部（２）内に曝気装置を設ける
とともに、沈殿部と曝気部が連通する開口部の最小面積
が、曝気部内の汚泥沈降速度よりも大きい水面積負荷に
なるように設定すると共に、沈殿部上部の水面積負荷を
前記汚泥沈降速度より小さくなるように設定し、スラッ
ジブランケット層を形成するように構成することを特徴
とする汚水処理装置。 ２、沈殿部と曝気部を仕切る仕切壁の下部が、曝気部底
面より少なくとも１ｍ以上の高さに位置するとともに、
沈殿部と曝気部が連通する開口部の面積と、沈殿部表面
の面積の比が少なくとも１：３以上であることを特徴と
する特許請求の範囲第１項記載の汚水処理装置。 ３、曝気部と沈殿部を仕切る仕切り壁の傾斜角を２０〜
８０°の範囲内とすることを特徴とする特許請求の範囲
第１項又は第２項記載の汚水処理装置。 ４、沈殿部に、曝気部と連通する部分へ汚泥を掻寄せる
レーキを設けたことを特徴とする特許請求の範囲第１項
、第２項又は第３項記載の汚水処理装置。 ５、汚水の流入部を曝気部底部に設けることを特徴とす
る特許請求の範囲第１項、第２項、第３項又は第４項記
載の汚水処理装置。 ６、汚水の流入を、沈殿部と曝気部の連通する曝気部下
部側壁より横向きに、曝気装置のある方向に流すように
配管するかまたはガイドを設けたことを特徴とする特許
請求の範囲第１項乃至第５項の何れか１つに記載の汚水
処理装置。 ７、曝気部内の仕切壁の下部が、曝気装置のある空間と
その反対側の空間の、各々の側壁と該仕切壁下部の距り
の比が２：１以上の位置にあることを特徴とする特許請
求の範囲第１項乃至第６項の何れか１つに記載の汚水処
理装置。 ８、曝気部内仕切り上部の連通部分の開口比を任意に変
えられるように曝気部内仕切り上部にゲートを設けたこ
とを特徴とする特許請求の範囲第１項乃至第７項の何れ
か１つに記載の汚水処理装置。 ９、曝気装置が断続曝気が可能な水中エアレーター、ジ
ェットエアレーションより成る特許請求の範囲第１項乃
至第８項の何れか１つに記載の汚水処理装置。 １０、曝気の作動、停止および／又は沈殿部レーキの稼
動を予め設定したプログラムに従つて作動するようにし
たプログラムコントロールを設けて運転できるようにし
たことを特徴とする特許請求の範囲第１項乃至第９項の
何れか１つに記載の汚水処理装置。[Claims] 1. A partition (6) sloped from the upper part of the reaction tank is provided, and the upper part is a settling part and the remaining part is an aeration part, and the lower part of the settling part and the aeration part are in communication, and the aeration part is A partition (7) communicating at the upper and lower parts is provided substantially parallel to the partition (6), and the aeration section (2), (2'') partitioned by the partition is provided.
An aeration device is provided in the lower aeration section (2), and the minimum area of the opening where the settling section and the aeration section communicate is set so that the water area load is greater than the sludge settling rate in the aeration section. A sewage treatment apparatus characterized in that the area load of water in the upper part of the settling section is set to be lower than the sludge settling rate, and a sludge blanket layer is formed. 2. The lower part of the partition wall separating the settling part and the aeration part is located at a height of at least 1 m or more from the bottom of the aeration part, and
2. The sewage treatment apparatus according to claim 1, wherein the ratio of the area of the opening through which the settling section and the aeration section communicate to the area of the surface of the settling section is at least 1:3 or more. 3. Set the inclination angle of the partition wall that separates the aeration section and sedimentation section to 20~
The sewage treatment device according to claim 1 or 2, characterized in that the angle is within a range of 80°. 4. The sewage treatment apparatus according to claim 1, 2, or 3, wherein the settling section is provided with a rake for raking the sludge to a portion communicating with the aeration section. 5. The sewage treatment device according to claim 1, 2, 3, or 4, wherein the sewage inlet is provided at the bottom of the aeration section. 6. Claim No. 6, characterized in that piping or a guide is provided so that the inflow of sewage flows laterally in the direction of the aeration device from the lower side wall of the aeration section where the settling section and the aeration section communicate with each other. The sewage treatment device according to any one of items 1 to 5. 7. The lower part of the partition wall in the aeration unit is located at a position where the ratio of the distance between each side wall and the lower part of the partition wall between the space where the aeration device is located and the space on the opposite side is 2:1 or more. A sewage treatment device according to any one of claims 1 to 6. 8. Any one of claims 1 to 7, characterized in that a gate is provided in the upper part of the aeration part inner partition so that the opening ratio of the communication part at the upper part of the aeration part inner partition can be changed arbitrarily. The sewage treatment equipment described. 9. The sewage treatment device according to any one of claims 1 to 8, wherein the aeration device comprises a submersible aerator or jet aeration capable of intermittent aeration. 10. Claim 1, characterized in that a program control is provided to operate the aeration operation and stop and/or the operation of the sedimentation rake according to a preset program. The sewage treatment device according to any one of items 9 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19526686A JPH0615079B2 (en) | 1986-08-22 | 1986-08-22 | Sewage treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19526686A JPH0615079B2 (en) | 1986-08-22 | 1986-08-22 | Sewage treatment equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6351994A true JPS6351994A (en) | 1988-03-05 |
| JPH0615079B2 JPH0615079B2 (en) | 1994-03-02 |
Family
ID=16338290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19526686A Expired - Fee Related JPH0615079B2 (en) | 1986-08-22 | 1986-08-22 | Sewage treatment equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0615079B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6077186A (en) * | 1983-09-30 | 1985-05-01 | 株式会社東芝 | Ceramic sintered body with metallized surface |
| JP2010264435A (en) * | 2009-05-15 | 2010-11-25 | Shenzhen Jdl Environmental Protection Ltd | Method of forming facultative organism-adapted membrane bioreactor |
| CN105236552A (en) * | 2015-10-30 | 2016-01-13 | 浦华环保股份有限公司 | Sewage treatment integrated device enabling gravitational self-refluxing of activated sludge |
| CN110104209A (en) * | 2019-05-09 | 2019-08-09 | 中国飞机强度研究所 | A kind of water vapor separation system |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107601656B (en) * | 2017-10-13 | 2021-01-19 | 衡阳师范学院 | Device for rapidly culturing aerobic granular sludge secondary flow air-stripping fluidized bed by granulating granular sludge |
| JP7230386B2 (en) * | 2018-09-14 | 2023-03-01 | 王子ホールディングス株式会社 | Water treatment device and water treatment method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50106057U (en) * | 1974-02-04 | 1975-09-01 | ||
| JPS5389762U (en) * | 1976-12-24 | 1978-07-22 | ||
| JPS6115793A (en) * | 1984-06-29 | 1986-01-23 | Ebara Infilco Co Ltd | Treatment of organic waste water |
-
1986
- 1986-08-22 JP JP19526686A patent/JPH0615079B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50106057U (en) * | 1974-02-04 | 1975-09-01 | ||
| JPS5389762U (en) * | 1976-12-24 | 1978-07-22 | ||
| JPS6115793A (en) * | 1984-06-29 | 1986-01-23 | Ebara Infilco Co Ltd | Treatment of organic waste water |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6077186A (en) * | 1983-09-30 | 1985-05-01 | 株式会社東芝 | Ceramic sintered body with metallized surface |
| JPH0159238B2 (en) * | 1983-09-30 | 1989-12-15 | Tokyo Shibaura Electric Co | |
| JP2010264435A (en) * | 2009-05-15 | 2010-11-25 | Shenzhen Jdl Environmental Protection Ltd | Method of forming facultative organism-adapted membrane bioreactor |
| CN105236552A (en) * | 2015-10-30 | 2016-01-13 | 浦华环保股份有限公司 | Sewage treatment integrated device enabling gravitational self-refluxing of activated sludge |
| CN105236552B (en) * | 2015-10-30 | 2017-08-15 | 浦华环保股份有限公司 | A kind of activated sludge gravity is from flowing back integrated sewage treatment device |
| CN110104209A (en) * | 2019-05-09 | 2019-08-09 | 中国飞机强度研究所 | A kind of water vapor separation system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0615079B2 (en) | 1994-03-02 |
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