JPH04197494A - Method and apparatus for treating sewage - Google Patents
Method and apparatus for treating sewageInfo
- Publication number
- JPH04197494A JPH04197494A JP2325710A JP32571090A JPH04197494A JP H04197494 A JPH04197494 A JP H04197494A JP 2325710 A JP2325710 A JP 2325710A JP 32571090 A JP32571090 A JP 32571090A JP H04197494 A JPH04197494 A JP H04197494A
- Authority
- JP
- Japan
- Prior art keywords
- reaction tank
- sewage
- float
- tank
- 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
- 239000010865 sewage Substances 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 77
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 55
- 238000004062 sedimentation Methods 0.000 claims abstract description 11
- 230000035484 reaction time Effects 0.000 claims abstract description 5
- 238000005192 partition Methods 0.000 claims description 29
- 239000002351 wastewater Substances 0.000 claims description 27
- 238000010276 construction Methods 0.000 abstract description 2
- 239000010802 sludge Substances 0.000 description 10
- 230000001105 regulatory effect Effects 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 238000007667 floating Methods 0.000 description 4
- 239000008213 purified water Substances 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000004659 sterilization and disinfection Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010842 industrial wastewater Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 238000001914 filtration Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004065 wastewater treatment 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
Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Activated Sludge Processes (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野コ
本発明は、オキシデーシロンディッチ法や単槽式嫌気好
気活性汚泥法、標準活性汚泥法等の汚水処理反応槽に流
量調節機能を持たせることによって、汚水量等の条件に
関係なく安定した処理効果を得られる汚水処理方法及び
その装置に関する。[Detailed Description of the Invention] [Industrial Field of Application] The present invention is applicable to sewage treatment reactors such as the oxidation silonditch process, the single-tank anaerobic and aerobic activated sludge process, and the standard activated sludge process, which have a flow rate adjustment function. The present invention relates to a sewage treatment method and an apparatus thereof, which can obtain stable treatment effects regardless of conditions such as the amount of sewage.
［従来の技術］
通常、下水や産業廃水等の汚水は物理的処理、化学的処
理、及び生物化学的処理の組み合わせによって浄化、処
理される。但し、化学的処理は一般には利用されず、主
に無機系の工場排水や廃薬品処理等で採用されている。[Prior Art] Generally, wastewater such as sewage and industrial wastewater is purified and treated by a combination of physical treatment, chemical treatment, and biochemical treatment. However, chemical treatment is not generally used, and is mainly used to treat inorganic industrial wastewater and waste chemicals.
汚水処理の代表的な装置の一例として、次のような方法
がある。The following methods are examples of typical equipment for sewage treatment.
即ち、第１段階で物理的処理として、沈砂池で土砂や石
、金属等を、更にスクリーンで粗大浮遊物やきょう雑物
が除去され、反応槽に送られる。That is, in the first stage, as a physical treatment, earth, sand, stones, metals, etc. are removed in a settling pond, and coarse suspended matter and impurities are removed in a screen, and then sent to a reaction tank.
第２段階では、反応槽に流入された汚水が好気性微生物
によって浄化される。ところで、この反応槽の好気性微
生物による処理方法として、散水ろ床や活性汚泥法等が
あり、今日では活性汚泥法が主流を占めている。反応槽
で処理された汚水は、反応槽の内壁上部に形成されてい
る排出口より排出される。In the second stage, the wastewater flowing into the reaction tank is purified by aerobic microorganisms. By the way, there are methods for treating this reaction tank using aerobic microorganisms, such as a trickling filter and an activated sludge method, and the activated sludge method is the mainstream method today. The wastewater treated in the reaction tank is discharged from an outlet formed in the upper part of the inner wall of the reaction tank.
第３段階では、汚水は反応槽より排出され最終沈殿池に
送られる。最終沈殿池では浮遊性固形物が沈殿分離され
、汚泥と分離液とに分けられる。In the third stage, the wastewater is discharged from the reactor and sent to the final settling tank. In the final settling tank, suspended solids are separated by sedimentation and separated into sludge and separated liquid.
ここで分離液となった処理水は、最後に消毒槽で消毒さ
れてから放流される。The treated water, which has become a separated liquid, is finally disinfected in a disinfection tank before being discharged.
ところで、従来の汚水処理方法においては、反応槽の排
出口の位置は固定されているため、汚水量が増加して反
応槽の水位線が排出口を越えると、その量だけ汚水は排
出口から溢れ出て排出される。By the way, in conventional sewage treatment methods, the position of the outlet of the reaction tank is fixed, so when the amount of sewage increases and the water level line of the reaction tank exceeds the outlet, that amount of sewage is removed from the outlet. It overflows and is drained.
従って、汚水量が変動すると反応槽での滞留時間も変動
することになり、浄化処理が完全ではない場合もある。Therefore, when the amount of wastewater changes, the residence time in the reaction tank also changes, and the purification process may not be complete.
特に量や質に著しい経時変動がある汚水に関しては、こ
の変動を直接汚水処理装置で受は入れると、処理水の水
質が安定せず、特に汚水が多量に流入した時には充分に
反応槽で処理されないまま最終沈殿池に排出される。従
って放流される排水の水質が悪化することになり、最終
的には環境を汚染する可能性がある。In particular, with regard to sewage whose quantity and quality vary significantly over time, if these fluctuations are directly accepted by the sewage treatment equipment, the quality of the treated water will not be stable.Especially when a large amount of sewage flows in, the reaction tank will not be able to sufficiently treat it. It is discharged to the final sedimentation tank without being washed. Therefore, the water quality of the discharged wastewater will deteriorate, which may ultimately pollute the environment.
更に、汚水量の変動を考慮すると、最終沈殿池は最大流
入汚水量に対応できる大きさが必要となり、最大容量に
合ったかなり規模の大きいものとなる。Furthermore, considering fluctuations in the amount of sewage, the final settling tank needs to be large enough to accommodate the maximum amount of inflowing sewage, and the final settling tank must be quite large to match the maximum capacity.
この対策として、従来では流入水を汚水処理装置の入口
側で受は止める流量調整槽が別途に設けられている。こ
の流量調整槽によって、反応槽に対する流入水の量と質
の均等化が図られる。As a countermeasure against this problem, conventionally, a flow rate regulating tank is separately provided to receive and stop the inflow water at the inlet side of the sewage treatment equipment. This flow rate adjustment tank equalizes the quantity and quality of water flowing into the reaction tank.
［発明が解決しようとする課題］
しかしながら、この様に別途に流量調整槽を設けた従来
技術では、調整槽に加え流量調節ポンプ等も必要となり
、それだけ装置が大規模となり、また、そのための処理
工程が増えることになる。[Problems to be Solved by the Invention] However, in the conventional technology in which a flow rate adjustment tank is provided separately as described above, a flow rate adjustment pump, etc. is also required in addition to the adjustment tank, which increases the scale of the device, and the processing required for this purpose is large. This will increase the number of processes.
この様に従来用いられている汚水処理装置は、処理水の
水質を一定にするために流量調整槽を設け、最終沈殿池
を最大容量とする大型の装置が必要とされ、規模が大き
く、また運転管理にもそれだけ注意が必要となる。Conventionally used sewage treatment equipment is large in scale and requires a large equipment with a flow rate adjustment tank and a final sedimentation tank with the maximum capacity in order to keep the quality of the treated water constant. Operation management also requires a lot of attention.
本考案の目的は、処理水の水質を一定にすることができ
、更に従来技術に比べて汚水処理装置を小規模化するこ
とによって建設費を大幅に削減でき、運転管理の省力化
することのできる汚水処理方法及びその装置を提供する
ことにある。The purpose of this invention is to make it possible to keep the quality of treated water constant, and to significantly reduce construction costs by downsizing sewage treatment equipment compared to conventional technology, and to save labor in operation and management. The purpose of the present invention is to provide a wastewater treatment method and an apparatus for the same.
［課題を解決するための手段］
以上のような課題を解決するために、本出願の請求項１
の発明は、汚水処理反応槽の内部に、−定量の汚水を最
終沈殿池に流出させるフロート型の流量調整装置を設け
、汚水処理反応槽への流入汚水量の変動に対しても反応
槽の水位を上下動させることにより、流入汚水の反応時
間を一定レベル以上に保ち、且つ最終沈殿池への水量負
荷を均等化させることを特徴とする。[Means for solving the problem] In order to solve the above problems, claim 1 of the present application
In the invention, a float-type flow rate adjustment device is installed inside the sewage treatment reaction tank to allow a certain amount of sewage to flow out to the final settling tank, and the reaction tank can be adjusted even in response to fluctuations in the amount of sewage flowing into the sewage treatment reaction tank. By moving the water level up and down, the reaction time of inflowing sewage is kept above a certain level, and the water load to the final settling tank is equalized.
また、請求項２の発明は、汚水処理反応槽内部に汚水表
面においては反応槽内部と区画され、且つ底部で反応槽
内部と連通した隔壁が設けられ、前記隔壁内部には垂直
方向に設けられたガイドと、このガイドに摺動自在に設
けられたフロートと、このフロートと一体に設けられた
排出基を有する汚水排出口とが配設され、この汚水排出
口の下部には反応層外部の最終沈殿池側に伸びるフレキ
シブルチューブが接続され、前記隔壁の水面近傍にはス
カム用開口部が設けられ、このスカム用開口部にはフロ
ートによって上下動するスカム用ゲートが設けられてい
ることを特徴とする。Further, in the invention of claim 2, the inside of the sewage treatment reaction tank is provided with a partition wall that is separated from the inside of the reaction tank at the surface of the sewage and communicated with the inside of the reaction tank at the bottom, and that the inside of the partition wall is provided in a vertical direction. A guide, a float slidably attached to the guide, and a wastewater outlet having a discharge base provided integrally with the float are arranged. A flexible tube extending toward the final settling tank is connected, a scum opening is provided near the water surface of the partition wall, and a scum gate is provided in the scum opening that moves up and down with a float. shall be.
［作用］
以上のような構成を有する請求項１の発明の作用は次の
通りである。即ち、フロートを用いた流量調整装置によ
って、反応槽への流入汚水の経時変動に関係なく浄化処
理水の排出流量を一定に調整することができ、充分に反
応槽で浄化処理された後に排出されるので、排出される
処理水の水質が安定する。また、フロートを用いた流量
調整装置を設けることにより流量調整槽やそのためのポ
ンプ等が必要なく、更に反応槽から最終沈殿槽に処理水
は定量的に排出されるので、最終沈殿槽の容量は常に一
定量となる。[Function] The function of the invention of claim 1 having the above configuration is as follows. In other words, by using a flow rate adjustment device using a float, the discharge flow rate of purified water can be adjusted to a constant level regardless of changes over time in the wastewater flowing into the reaction tank, and the flow rate of the purified water can be adjusted to a constant level without regard to changes in the wastewater flowing into the reaction tank. This stabilizes the quality of the treated water discharged. In addition, by installing a flow rate adjustment device using a float, there is no need for a flow rate adjustment tank or a pump for it, and the treated water is quantitatively discharged from the reaction tank to the final sedimentation tank, so the capacity of the final sedimentation tank can be reduced. Always a constant amount.
また、請求項２の発明においては、反応槽に対する汚水
の流入に伴いフロートが上下動し、フロートと一体に設
けられた排出量の位置が水位と共に移動するので、排出
口からフレキシブルチューブを介して外部に排出される
汚水量は、流入汚水量の変動にも・かかわらず一定とな
る。更に、フロートを有するゲートから浮遊しているス
カムのみを隔壁内に導き、排出口から外部に取り出すこ
とができる。In addition, in the invention of claim 2, the float moves up and down as wastewater flows into the reaction tank, and the position of the discharge amount provided integrally with the float moves with the water level. The amount of sewage discharged to the outside remains constant regardless of fluctuations in the amount of inflowing sewage. Further, only the floating scum can be guided into the partition wall through the gate having the float, and can be taken out from the discharge port.
［実施例］
以下本発明を図示した実施例にもとづき説明する。この
実施例では、活性汚泥反応槽での汚水処理方法及びその
装置について本発明を適用したものである。[Examples] The present invention will be described below based on illustrated examples. In this example, the present invention is applied to a method and apparatus for treating sewage in an activated sludge reaction tank.
第１図は、請求項１の発明の一実施例を示すフローチャ
ートである。流入汚水の沈砂池１には、濾過用のスクリ
ーン２が設けられ、この沈砂池１によって砂や泥を分離
された汚水は、ポンプ３によって次の段の汚水処理反応
槽４に送られる。この汚水処理反応槽４は、−例として
その底部にエアノズル５を有し、このエアノズル５に反
応槽外部に設けられたブロア６がら空気を送込むように
なっている。この汚水処理反応槽４の水面部分にはフロ
ート式の流量調節装置７が設けられ、この流量調節装置
７によって反応槽４に流入する汚水量が変動しても、反
応槽４からの汚水排出量が一定に保持されるようになっ
ている。流量調節装置７からの排出汚水は最終沈殿池８
に排出され、更にその後段に設けられた消毒槽９から外
部に放流される。最終沈殿池８で沈殿された汚泥は、再
度反応槽４に返送され、また反応槽４で生じた余剰汚泥
は固液分離装置１０に送られ、この固液分離装置１０の
上澄水も反応槽４に返送される。一方、固液分離装置１
０で分離された濃縮汚泥は、濃縮汚泥貯溜槽１１或いは
混和槽１２に送られ、沈殿後搬出又は脱水処理されたり
、凝集剤１３によって凝集された後、脱水機１４、脱水
ケーキホッパー１５を経て外部に搬出される。FIG. 1 is a flowchart showing an embodiment of the invention according to claim 1. A filtering screen 2 is provided in a settling basin 1 for inflowing wastewater, and the wastewater from which sand and mud have been separated by the settling basin 1 is sent by a pump 3 to a sewage treatment reaction tank 4 in the next stage. The sewage treatment reaction tank 4 has, for example, an air nozzle 5 at its bottom, into which air is sent through a blower 6 provided outside the reaction tank. A float-type flow rate adjustment device 7 is provided on the water surface of the sewage treatment reaction tank 4, and even if the amount of sewage flowing into the reaction tank 4 changes, the amount of sewage discharged from the reaction tank 4 is controlled by the flow rate adjustment device 7. is kept constant. The wastewater discharged from the flow rate adjustment device 7 is sent to the final settling tank 8.
It is discharged to the outside from a disinfection tank 9 provided at a subsequent stage. The sludge settled in the final settling tank 8 is returned to the reaction tank 4 again, and the excess sludge generated in the reaction tank 4 is sent to the solid-liquid separator 10, and the supernatant water of this solid-liquid separator 10 is also sent to the reaction tank 4. 4 will be returned. On the other hand, solid-liquid separator 1
The concentrated sludge separated at 0 is sent to a concentrated sludge storage tank 11 or a mixing tank 12, and after settling, it is carried out or dehydrated, or after being flocculated by a flocculant 13, it is passed through a dehydrator 14 and a dehydrated cake hopper 15. It is carried outside.
次に、前記反応槽４に使用されている流量調整装置７の
詳細を第２図以下に説明する。Next, details of the flow rate adjusting device 7 used in the reaction tank 4 will be explained below with reference to FIG.
汚水処理反応槽４のコーナ一部分には、その内部を上方
から見て矩形に区画するように隔壁１６が設けられてい
る。この隔壁１６は、その底部で反応槽４内部と連通し
ているが、水面近くにおいては汚水が隔壁１６内部に流
入することができないものである。この隔壁１６の底部
には、斜めに傾斜した邪魔板１７が設けられ、その中央
部に後で述べるフレキシブルチューブ２１ａの挿入孔１
８が開口している。即ち、この邪魔板１７は、その挿入
孔１８を通ってフレキシブルチューブ２１ａが伸縮移動
するのに十分な大きさを有しながら、隔壁１６内部に反
応槽４底部のノズルから発生した反応用空気の泡が多量
に入り込むことがないように設けられている。また、隔
壁１６の一方の側面には、その上部からほぼ下部にまで
続（開口部１９が設けられている。この開口部１９の両
側にはレール１９ａが形成され、このレール１９ａにス
カム用ゲート２０が上下に摺動自在に装着されている。A partition wall 16 is provided at a corner of the sewage treatment reaction tank 4 so as to divide the interior into a rectangular shape when viewed from above. The partition wall 16 communicates with the inside of the reaction tank 4 at its bottom, but sewage cannot flow into the partition wall 16 near the water surface. A diagonally inclined baffle plate 17 is provided at the bottom of this partition wall 16, and an insertion hole 1 for a flexible tube 21a, which will be described later, is provided in the center of the baffle plate 17.
8 is open. That is, this baffle plate 17 has a size sufficient to allow the flexible tube 21a to expand and contract through its insertion hole 18, while allowing reaction air generated from the nozzle at the bottom of the reaction tank 4 to flow inside the partition wall 16. It is designed to prevent large amounts of bubbles from entering. Further, on one side of the partition wall 16, an opening 19 is provided which extends from the upper part to almost the lower part.Rails 19a are formed on both sides of this opening 19, and a scum gate is formed on this rail 19a. 20 is attached so as to be slidable up and down.
このスカム用ゲート２０の上部には、フロート２０ｇが
一体に設けられ、このフロート２０ａと共にゲート２０
が水位に従って上下動するようになっている。また、隔
壁１６内におけるこの開口部１９の内側には、隔壁と平
行にバッフルプレート１６ａが設けられている。A float 20g is integrally provided on the upper part of this scum gate 20, and together with this float 20a, the gate 20
is designed to move up and down according to the water level. Further, inside the opening 19 in the partition wall 16, a baffle plate 16a is provided in parallel with the partition wall.
一方、反応槽４からその外部の最終沈殿池８側に伸びる
排水管２１の一部は、フレキシブルチューブ２１ａによ
って伸縮自在に形成されている。On the other hand, a part of the drain pipe 21 extending from the reaction tank 4 to the final settling tank 8 outside thereof is formed by a flexible tube 21a so as to be expandable and contractible.
また、その上部は上方に漏斗状に広がる排水口２２につ
ながり、その排水口２２の周囲には幅の等しい四角柱の
排出量２４が形成されている。排出量２４の１組の向か
い合う面には上縁辺より下方に向かってＶ字形の切欠き
２５が設けられている。Further, the upper part thereof is connected to a drain port 22 that spreads upward in a funnel shape, and a rectangular prism-shaped discharge volume 24 of equal width is formed around the drain port 22. A V-shaped notch 25 is provided in a pair of opposing surfaces of the discharge volume 24 downward from the upper edge.
他方の１組の面には、三角柱のフロート２３が排水口２
２を挟むように排出量２４と一体に設けられている。こ
のフロート２３を上部から見ると、−辺の長さが排出量
２４の幅と等しい正三角形に形成され、その中心には蓋
のある水入れ孔２６が設けられている。また、下部の中
心には蓋付きの・水抜き孔２７が設けられている。一方
、開口部２２には、上方に向かって水面に出る長さのあ
るエア抜き用チューブ２９が設けられている。更に、排
出量２４を挟んだ左右のフロート２３の両端は、反応槽
４内部に垂直方向に設けられたガイド２８に摺動自在に
取り付けられている。On the other set of surfaces, a triangular prism float 23 is connected to the drain port 2.
2 is provided integrally with the discharge amount 24 so as to sandwich the discharge amount 24 therebetween. When this float 23 is viewed from above, it is formed into an equilateral triangle whose negative side length is equal to the width of the discharge amount 24, and a water container 26 with a lid is provided at the center thereof. Furthermore, a drain hole 27 with a lid is provided in the center of the lower part. On the other hand, the opening 22 is provided with a long air release tube 29 that extends upward to the water surface. Furthermore, both ends of the left and right floats 23 sandwiching the discharge amount 24 are slidably attached to guides 28 provided vertically inside the reaction tank 4 .
以上のような構成を有する本実施例の作用を説明する。The operation of this embodiment having the above configuration will be explained.
まず、第１図に示すように、本実施例においては、沈砂
池１の後段に直接汚水処理反応槽４が設けられ、従来技
術のような流量調整槽が存在しない。従って、沈砂池１
から反応槽４への汚水の流入量は変動する可能性がある
。特に、図示の例ではポンプ３を使用することにより、
流量の調整も可能ではあるが、沈砂池１の容量が小さい
場合や自然流下式により反応槽４に汚水を流入させた場
合には、流入量の変動は無視できないものとなる。First, as shown in FIG. 1, in this embodiment, a sewage treatment reaction tank 4 is provided directly after the sand settling basin 1, and there is no flow rate regulating tank as in the prior art. Therefore, settling basin 1
The amount of wastewater flowing into the reaction tank 4 may vary. In particular, by using the pump 3 in the illustrated example,
Although it is possible to adjust the flow rate, if the capacity of the settling basin 1 is small or if wastewater is allowed to flow into the reaction tank 4 using a gravity flow method, fluctuations in the inflow amount cannot be ignored.
しかし、本実施例では、反応槽４にフロート式の流量調
整装置７が設けられているので、流入量が変動した場合
でも、このフロートが上下動して反応槽４からの汚水排
出量を一定に保つことができる。その結果、汚水の流入
量に応じて、反応槽４内部の汚水量が、図中１（、Ｗ、
Ｌ及びり、Ｗ、Ｌで示すように変動することにより、汚
水の反応槽４内部の滞留時間は一定に保たれるので、十
分な反応時間を確保することができる。また、反応槽４
からの最終沈殿池８への排出量も一定に保たれるので、
沈殿池８の容量をその一定排出量に応じた小規模のもの
とすることができる。However, in this embodiment, the reaction tank 4 is provided with a float-type flow rate adjustment device 7, so even if the inflow rate fluctuates, this float moves up and down to maintain a constant amount of wastewater discharged from the reaction tank 4. can be kept. As a result, the amount of sewage inside the reaction tank 4 changes to 1 (, W,
By changing as shown by L, W, and L, the residence time of the wastewater inside the reaction tank 4 is kept constant, so that a sufficient reaction time can be ensured. In addition, reaction tank 4
Since the discharge amount from to the final settling tank 8 is also kept constant,
The capacity of the sedimentation tank 8 can be made small according to the constant discharge amount.
この様に、本実施例によれば、汚水処理反応槽４に調整
槽と同様な作用を持たせるという効果的な方法で、処理
装置全体の単純化及び十分な処理反応時間の確保が可能
となるが、次にこの反応槽４に使用されている流量調整
装置７の作用を説明する。In this way, according to this embodiment, by providing the sewage treatment reaction tank 4 with the same function as the adjustment tank, it is possible to simplify the entire treatment equipment and ensure sufficient treatment reaction time. However, next, the operation of the flow rate regulating device 7 used in this reaction tank 4 will be explained.
汚水処理反応槽４の内部に区画するように設けられた隔
壁１６は、その底部で反応槽４内部と連通しているため
、隔壁１６の内部と反応槽４内部との水位は同位置を保
たれている。即ち、隔壁１６の内部のフロート２３は水
に浮き、反応槽４内部の水位の上下動と共に上下動する
。この時、排水管２１の一部がフレキシブルチューブ２
１ａによって伸縮自在のため、フロート２３と一体ニ設
けられた排出量２４、更に排水口２２もフロート２３と
共に同様の動きをする。また、フロート２３がその両端
に取り付けられている垂直方向に設けられたガイド２８
を摺動するので、水位の上下動以外の水の動き、例えば
水流等には影響されない。The partition wall 16 provided to partition the inside of the sewage treatment reaction tank 4 communicates with the inside of the reaction tank 4 at its bottom, so that the water levels inside the partition wall 16 and inside the reaction tank 4 are maintained at the same position. It's dripping. That is, the float 23 inside the partition wall 16 floats on water and moves up and down as the water level inside the reaction tank 4 moves up and down. At this time, a part of the drain pipe 21 is connected to the flexible tube 2.
1a, the drain 24, which is provided integrally with the float 23, and the drain port 22 also move in the same way as the float 23. Also, a vertically provided guide 28 with floats 23 attached to both ends thereof.
Since it slides, it is not affected by water movement other than the vertical movement of the water level, such as water flow.
ところで、浄化処理水の排出量を調整し、定流量で排出
するためには、流量調整装置７と水位との位置関係が重
要となる。そのため、排水環２４を設けることによって
浄化処理水を直接排水口２２に排出するよりも水量を細
かく調整することができる。即ち、排水環２４のＶ字形
の切欠き２５によって、水位をその下端とした時には、
わずがの量を排出することができる。また、水位に対し
てＶ字形の切欠き２５を下降していけば、それだけ排出
量が増加する。この時、排水環２４のＶ字形の切欠き２
５を下降や上昇させる方法として、本実施例ではフロー
ト２３の汚水に対する比重を変化させることによって成
されている。即ち、フロート２３内に水入れ孔２６より
水を注入、または、水抜き孔２７から水を抜けば、フロ
ート２３の重量を増減でき、それだけフロート２３が浮
き沈みすることになり、フロート２３と一体に形成され
た排水環２４も同様に水位に対して下降或いは上昇する
ことができる。By the way, in order to adjust the discharge amount of purified water and discharge it at a constant flow rate, the positional relationship between the flow rate adjustment device 7 and the water level is important. Therefore, by providing the drain ring 24, the amount of water can be adjusted more finely than when the purified water is directly discharged to the drain port 22. That is, when the water level is set at the lower end by the V-shaped notch 25 of the drainage ring 24,
A small amount can be discharged. Moreover, if the V-shaped notch 25 is lowered relative to the water level, the discharge amount increases accordingly. At this time, the V-shaped notch 2 of the drainage ring 24
In this embodiment, the float 5 is lowered or raised by changing the specific gravity of the float 23 relative to the waste water. That is, by injecting water into the float 23 from the water inlet 26 or draining water from the water drain hole 27, the weight of the float 23 can be increased or decreased, and the float 23 will rise and fall to that extent, so that the float 23 and The drainage ring 24 formed can likewise be lowered or raised with respect to the water level.
一方、反゛応槽４の汚水表面に浮かんでいるスカムは、
隔壁１６の上部で遮られて直接は隔壁内部に入り込むこ
とはないが、開口部１９部分からスカム用ゲート２０を
乗り越えて隔壁１６内に入り込む。このとき、スカム用
ゲート２０は、反応槽４に流入する汚水量の変動により
水位が変わっても、その上部に設けられたフロート２０
ａの作用により、ゲート２０はレール１９ａにガイドさ
れて上下動するので、その上部が常に水位と同レベルと
なって、汚水表面のスカムのみが隔壁１６内に入り込む
。この隔壁内に入り込んだスカムは、バッフルプレーと
１６ａによって直接流量調整装置７のフロートに当たら
ないように案内され、その後、７字形の切り欠き部分か
ら排出口内に流れ込み、外部に送り出される。On the other hand, the scum floating on the surface of the wastewater in reaction tank 4 is
Although it is blocked by the upper part of the partition wall 16 and does not directly enter the partition wall, it passes over the scum gate 20 from the opening 19 portion and enters the partition wall 16. At this time, even if the water level changes due to fluctuations in the amount of sewage flowing into the reaction tank 4, the scum gate 20 is operated by the float 20 provided at the top of the scum gate 20.
Due to the action of a, the gate 20 moves up and down guided by the rail 19a, so that its upper part is always at the same level as the water level, and only the scum on the surface of the waste water enters the partition wall 16. The scum that has entered the partition wall is guided by the baffle play 16a so as not to directly hit the float of the flow rate regulating device 7, and then flows into the discharge port through the figure 7-shaped notch and is sent to the outside.
第２図以下に示すような本実施例の汚水処理装置の効果
は、次の通りである。The effects of the sewage treatment apparatus of this embodiment as shown in FIG. 2 and below are as follows.
■フロートをガイドによって案内するので、水位の変動
に伴いフロートを安定した状態で円滑に上下動させるこ
とが可能となり、排出口が不用意に傾いて排出流量の変
動が生じるような恐れもない。■Since the float is guided by a guide, it is possible to move the float up and down in a stable manner as the water level fluctuates, and there is no fear that the discharge port will inadvertently tilt and the discharge flow rate will fluctuate.
■フロートが隔壁によって反応槽内部から区画され、し
かもその底部には傾斜した邪魔板が設けられているので
、反応槽底部のノズルから吹き出されてフロート部分に
当たる空気の泡がなくなり、この泡によって汚水の見掛
は比重が変化してフロートの沈降量が変動することも防
止され、上位一定の排出量が確保される。■The float is separated from the inside of the reaction tank by a partition wall, and an inclined baffle plate is provided at the bottom of the float, so that air bubbles that are blown out from the nozzle at the bottom of the reaction tank and hit the float part are eliminated, and these bubbles cause sewage to flow out. This also prevents fluctuations in the sedimentation amount of the float due to changes in the apparent specific gravity of the float, thereby ensuring a constant upper discharge amount.
■水位と共に上下動するフロート付きのゲートの採用に
より、反応が不十分な反応槽表面近くの汚水は排出する
ことなく、単に浮いているスカムのみを排出口から常時
取り出すことができる。その結果、スカムによって汚水
表面が覆われてしまい、反応が効果的に行われなくなる
不都合も解消される。■By using a gate with a float that moves up and down with the water level, only the floating scum can be taken out from the outlet at any time, without draining the wastewater near the surface of the reaction tank where the reaction is insufficient. As a result, the problem that the surface of the wastewater is covered with scum and the reaction is not carried out effectively is also eliminated.
゛ ［他の実施例］
なお、本発明は上記の実施例に限定されるものではなく
、次のような他の実施例も包含するものである。゛ [Other Examples] The present invention is not limited to the above-mentioned embodiments, but also includes the following other embodiments.
■反応槽の構造及びこれに汚水を流入・排出する沈砂池
や最終沈殿池の構造は、図示のものに限定されることな
く、従来から公知の各種の汚水処理装置全般に本発明を
適用することが可能である。■The structure of the reaction tank and the structure of the settling tank and final settling tank through which sewage flows into and is discharged are not limited to those shown in the drawings, and the present invention can be applied to all kinds of conventionally known sewage treatment equipment. Is possible.
■流量調整装置としては、図示のように両端にフロート
を有するもの以外に、片側或いは排出口の周囲にフロー
トを設けたものも使用できる。(2) As the flow rate adjusting device, in addition to the one having floats at both ends as shown in the figure, one having a float on one side or around the discharge port can also be used.
また、フロートの位置も、反応槽のコーナ一部を三角形
に区切った隔壁を使用することにより、デッドスペース
の解消を図ることもできる。Further, regarding the position of the float, dead space can be eliminated by using a partition wall that divides a part of the corner of the reaction tank into a triangular shape.
■第２図の実施例では、フロート内部に注入する水量を
増減するようにしてフロートの浮力を調整し、排出口に
流入する汚水量を調整したが、フロートに対する排出口
の取付は位置をねじ止めその他の手段で可変とすること
により、フロートと水面との位置関係は変えずに排出口
の水面に対するレベルを調整することもできる。■In the example shown in Figure 2, the buoyancy of the float was adjusted by increasing or decreasing the amount of water injected into the float, and the amount of wastewater flowing into the outlet was adjusted. By making it variable with a stop or other means, the level of the outlet relative to the water surface can be adjusted without changing the positional relationship between the float and the water surface.
■流量調整装置を配置する隔壁は、図示のような矩形の
反応槽の内側に区画するように設けることもできるし、
反応槽の構造によっては、外付は形とすることもできる
。■The partition wall in which the flow rate adjustment device is arranged can be provided so as to divide the inside of the rectangular reaction tank as shown in the figure, or
Depending on the structure of the reaction tank, the external attachment can also be shaped.
■フロートは、ステンレスなどを材料とした箱型の中空
部材から構成しても良いし、発泡樹脂などによって形成
することもできる。■The float may be constructed from a box-shaped hollow member made of stainless steel or the like, or may be formed from foamed resin or the like.
［発明の効果コ
以上の通り、請求項１の発明によれば、汚水処理反応槽
に設けた流量調節装置によって、流入汚水の変動にもか
かわらず反応槽内部の処理時間を一定にしたので、従来
のような流量調整槽や大型の最終沈殿池が不要となり、
処理装置の単純化及び省エネルギー化が可能となる。[Effects of the Invention] As described above, according to the invention of claim 1, the treatment time inside the reaction tank is kept constant despite fluctuations in the inflowing sewage by the flow rate regulating device provided in the sewage treatment reaction tank. There is no need for a conventional flow rate adjustment tank or large final settling tank,
It becomes possible to simplify the processing equipment and save energy.
また、請求項２の発明によれば、フロートを有する排出
口とスカム用ゲートの組合わせにより、水位の変動にも
かかわらず一定量の汚水の排出ができ、しかも汚水表面
に浮いているスカムも同時に排出することが可能となる
。Further, according to the invention of claim 2, by combining the discharge port having a float and the scum gate, a constant amount of wastewater can be discharged despite fluctuations in the water level, and the scum floating on the surface of the wastewater can be discharged. It becomes possible to discharge them at the same time.
第１図は請求項１の発明の一実施例を示すフローチャー
ト、第２図は請求項２の発明における流量調節装置部分
の一実施例を示す平面図、第３図は同じくスカム用ゲー
ト方向から見た正面図、第４図は同じく縦断面図、第５
図は同じくスカム用ゲート部分の断面図、第６図はフロ
ート及びそのガイド部分の斜視図である。
１・・・沈砂池、４・・・汚水処理反応槽、７・・・流
量調節装置、８・・・最終沈殿池、９・・・消毒槽、１
６・・・隔壁、１６ａ・・・バッフルプレート、１７・
・・邪魔板、１８・・・挿入孔、１９・・・開口部、１
９ａ・・・レール、２０・・・スカム用ゲート、２０ａ
・・・フロート、２１・・・排水管、２２・・・排水口
、２３・・・フロート、２４・・・排水堰、２５・・・
Ｖ字形切欠き、２８・・・ガイド。Fig. 1 is a flowchart showing an embodiment of the invention of claim 1, Fig. 2 is a plan view showing an embodiment of the flow rate regulating device portion of the invention of claim 2, and Fig. 3 is also a view from the direction of the scum gate. The front view, Figure 4 is also a longitudinal sectional view, and Figure 5 is the same as the front view.
The figure is a sectional view of the scum gate portion, and FIG. 6 is a perspective view of the float and its guide portion. DESCRIPTION OF SYMBOLS 1... Sand settling tank, 4... Sewage treatment reaction tank, 7... Flow rate adjustment device, 8... Final settling tank, 9... Disinfection tank, 1
6... Partition wall, 16a... Baffle plate, 17.
... Baffle plate, 18 ... Insertion hole, 19 ... Opening, 1
9a...Rail, 20...Scum gate, 20a
...Float, 21...Drain pipe, 22...Drain port, 23...Float, 24...Drain weir, 25...
V-shaped notch, 28...guide.
Claims (2)
殿池に流出させるフロート型の流量調整装置を設け、汚
水処理反応槽への流入汚水量の変動に対しても反応槽の
水位を上下動させることにより、流入汚水の反応時間を
一定レベル以上に保ち、且つ最終沈殿池への水量負荷を
均等化させることを特徴とする汚水処理方法。(1) A float-type flow rate adjustment device is installed inside the sewage treatment reaction tank to allow a certain amount of sewage to flow out to the final settling tank, and the water level of the reaction tank can be adjusted even when the amount of sewage flowing into the sewage treatment reaction tank changes. A sewage treatment method characterized by keeping the reaction time of inflow sewage above a certain level and equalizing the water volume load to the final settling tank by moving the sewage up and down.
槽内部と区画され且つ底部で反応槽内部と連通した隔壁
が設けられ、 前記隔壁内部には、垂直方向に設けられたガイドと、こ
のガイドに摺動自在に設けられたフロートと、このフロ
ートと一体に設けられた排出堰を有する汚水排出口とが
配設され、この汚水排出口の下部には反応槽外部の最終
沈殿池側に伸びるフレキシブルチューブが接続され、前
記隔壁の水面近傍にはスカム用開口部が設けられ、この
スカム用開口部にはフロートによって上下動するスカム
用ゲートが設けられていることを特徴とする汚水処理装
置。(2) Inside the sewage treatment reaction tank, there is provided a partition wall that is separated from the inside of the reaction tank at the surface of the sewage water and communicates with the inside of the reaction tank at the bottom, and inside the partition wall, there is a guide installed in a vertical direction, and a partition wall that is connected to the inside of the reaction tank at the bottom. A float that is slidably provided on a guide and a wastewater outlet that has a discharge weir that is integrated with the float are provided.At the bottom of this wastewater outlet, there is a drain connected to the final sedimentation tank outside the reaction tank. A sewage treatment device characterized in that an extending flexible tube is connected, a scum opening is provided near the water surface of the partition wall, and a scum gate is provided in the scum opening that moves up and down with a float. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2325710A JP3025297B2 (en) | 1990-11-29 | 1990-11-29 | Sewage treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2325710A JP3025297B2 (en) | 1990-11-29 | 1990-11-29 | Sewage treatment equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04197494A true JPH04197494A (en) | 1992-07-17 |
| JP3025297B2 JP3025297B2 (en) | 2000-03-27 |
Family
ID=18179839
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2325710A Expired - Fee Related JP3025297B2 (en) | 1990-11-29 | 1990-11-29 | Sewage treatment equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3025297B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019093351A (en) * | 2017-11-24 | 2019-06-20 | コスモ石油株式会社 | Portable wastewater treatment evaluation device and wastewater treatment evaluation method |
| JP2020192489A (en) * | 2019-05-27 | 2020-12-03 | 前澤工業株式会社 | Wastewater treatment apparatus |
-
1990
- 1990-11-29 JP JP2325710A patent/JP3025297B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019093351A (en) * | 2017-11-24 | 2019-06-20 | コスモ石油株式会社 | Portable wastewater treatment evaluation device and wastewater treatment evaluation method |
| JP2020192489A (en) * | 2019-05-27 | 2020-12-03 | 前澤工業株式会社 | Wastewater treatment apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3025297B2 (en) | 2000-03-27 |
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