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JPS6084198A - Activated sludge treating apparatus - Google Patents

Activated sludge treating apparatus

Info

Publication number
JPS6084198A
JPS6084198A JP58097324A JP9732483A JPS6084198A JP S6084198 A JPS6084198 A JP S6084198A JP 58097324 A JP58097324 A JP 58097324A JP 9732483 A JP9732483 A JP 9732483A JP S6084198 A JPS6084198 A JP S6084198A
Authority
JP
Japan
Prior art keywords
tank body
sludge
waste water
inner cylinder
cylinder
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
Application number
JP58097324A
Other languages
Japanese (ja)
Other versions
JPH0233438B2 (en
Inventor
Tetsuo Kataoka
片岡 哲夫
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NGK Insulators Ltd
Original Assignee
NGK Insulators Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NGK Insulators Ltd filed Critical NGK Insulators Ltd
Priority to JP58097324A priority Critical patent/JPS6084198A/en
Publication of JPS6084198A publication Critical patent/JPS6084198A/en
Publication of JPH0233438B2 publication Critical patent/JPH0233438B2/ja
Granted legal-status Critical Current

Links

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

Landscapes

  • Activated Sludge Processes (AREA)

Abstract

PURPOSE:To make the titled apparatus compact and to enhance efficiency, by providing an inner cylinder and an isolated cylinder in a tank body, and enabling biological treatment and solid-liquid separation in one tank body. CONSTITUTION:A waste water supply port 4 and a gas supply port 5 are provided to the lower part of an inner cylinder 2 having a spiral flowline and waste water and oxygen-containing gas are supplied from said ports 4, 5. In this case, activated sludge stored in the tank body 1 having a flooding port 6 at the upper part thereof and waste water are lifted by air. A mixture of activated sludge and waste water enters the downwardly directed flowline between the inner cylinder 2 and an isolated cylinder 3 and recirculated to purify waste water. Subsequently, a part of the recirculated liquid turns aside from said flowline and enters the upwardly directed flowline between the isolated cylinder 3 and the tank body 1 and stirred by a slowly rotating stirring blade 7. In the next step, the sludge precipitated to the bottom part of the tank body 1 is scraped by a sludge scraper 8 and discharged from a sludge withdrawal pipe 10.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は下水等の有機性排水中のBOD 、α〕D、窒
素、リン等を除去する活性汚泥処理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 activated sludge treatment apparatus for removing BOD, α]D, nitrogen, phosphorus, etc. from organic wastewater such as sewage.

(従来技?Iv) 従来の活性汚泥−処理装置は沈澱池と、該沈澱池におい
て沈澱物質を沈澱除去した排水を曝気処理する曝気槽と
、該曝気槽において処理した排水を越流口から越流させ
る処理水と汚泥引抜口から引き抜く汚泥に分離させる最
終沈澱池とを順次設けたものを基本とするもので、この
ような活性汚泥処理装置によシ窒素を除去する場合には
曝気槽の直前に脱窒槽を付設して沈澱槽から汚泥を一部
返送するとともに該曝気槽から脱窒槽へ排水の一部を循
平して脱窒処理を行わねばならず、また、窒素およびリ
ンを除去する場合には脱窒槽の直前にさらに嫌気槽を付
設して沈澱槽から汚泥を返送するとともに前記曝気槽か
ら脱窒槽へ排水の一部を空気■の維持管IMが難しくて
ランニンクコストカ高くなる等種々の欠点があシ、特に
小規模処理には向1かないものであった。そこで、第2
図に示すように、上方部に越流口に)を有する槽体Qυ
内に内筒(2)と該内筒(2)を囲む隔離筒(ハ)を設
け、該内筒(イ)の下方には排水供給口(財)と気体供
給口−をそれぞれ位置き′せるとともに該槽体シυの底
部に沈澱した汚泥を)°臥拌する攪拌機翰を設けた活性
汚泥処理装置が小規模処理に好適な処理装置として提案
されているが、曝気部における攪拌と空気供給とが別体
にあるから装置が複雑であるうえにエアリフト効果も少
ないから循環液量の調節幅は小さくて負荷変動に対する
対応幅が狭く、また、隔離筒■と槽体シυとの空隙によ
っては汚泥のブリッジが形成されて汚泥が浮上し、さら
に、沈澱分離部の下部から暖気部へ汚泥が循環するため
充分に汚泥の濃縮がなされないから引抜汚泥濃度が低く
て引抜汚泥量が増加する。また、濃縮が不充分であった
クショートパヌが起ったりすれば曝気部でのNLS8濃
度の維持が困難となって処理水水質が悪化するおそれが
あり、さらにまた、嫌気部が形成されにくいために脱窒
処理が不充分で別途脱屋槽が必要となる等の問題点が残
されていた。
(Prior art? IV) A conventional activated sludge treatment device includes a settling tank, an aeration tank that aerates the wastewater from which precipitated substances have been removed by sedimentation in the settling tank, and an aeration tank that overflows the wastewater treated in the aeration tank from an overflow port. Basically, a final settling tank is installed in sequence to separate the treated water flowing into the sludge from the sludge drawn out from the sludge extraction port. A denitrification tank must be attached immediately before the denitrification process to return some of the sludge from the settling tank and circulate some of the wastewater from the aeration tank to the denitrification tank for denitrification treatment, and also to remove nitrogen and phosphorus. In this case, it is difficult to install an anaerobic tank just before the denitrification tank to return the sludge from the settling tank, and also to supply a part of the waste water from the aeration tank to the denitrification tank with air. It has various drawbacks, such as the following, and is not suitable for small-scale processing in particular. Therefore, the second
As shown in the figure, the tank body Qυ has an overflow opening in the upper part
An inner cylinder (2) and an isolation cylinder (c) surrounding the inner cylinder (2) are provided inside, and a waste water supply port and a gas supply port are located below the inner cylinder (a), respectively. An activated sludge treatment device equipped with an agitator cane that stirs the sludge settled at the bottom of the tank body has been proposed as a treatment device suitable for small-scale treatment. Since the supply is separate, the equipment is complicated, and the air lift effect is small, so the range of adjustment of the amount of circulating fluid is small and the range of response to load fluctuations is narrow. In some cases, sludge bridges are formed and the sludge floats to the surface, and the sludge is circulated from the bottom of the settling section to the warm air section, so the sludge is not sufficiently thickened, so the concentration of sludge drawn is low and the amount of sludge drawn increases. do. In addition, if the concentration is insufficient and Kushopanu occurs, it will be difficult to maintain the NLS8 concentration in the aeration section, which may deteriorate the quality of the treated water.Furthermore, the anaerobic section will be difficult to form Problems remained, such as insufficient denitrification treatment and the need for a separate de-house tank.

(発明の目的) 本発明は前記のような欠点や問題点を解決してコンパク
トでしかも効率的な処理を行うことのできる活性汚泥処
理装置を目的として完成されたものである。
(Objective of the Invention) The present invention has been completed with the aim of providing an activated sludge treatment apparatus that is compact and capable of efficient treatment by solving the above-mentioned drawbacks and problems.

(発明の構成) 本発明の構成は上方部に越流口を有する槽体内に内筒と
該内筒を囲む隔離筒を該隔離筒の上端を水位線上に突出
、させて設けるとともに該内筒の下方に排水供給口と気
体供給口をそれぞれ位置させ、さらに、僧体内には該僧
体の槽壁と隔離筒との間に形成される沈澱部を級やかに
攪拌する攪拌島と該槽体の底部に沈澱した汚泥を掻寄せ
る汚泥掻寄機を設けたことを特徴とするものである。
(Structure of the Invention) The structure of the present invention is to provide an inner cylinder and an isolation cylinder surrounding the inner cylinder in a tank body having an overflow opening in the upper part, with the upper end of the isolation cylinder protruding above the water level, and the inner cylinder. A drainage supply port and a gas supply port are located at the bottom of the body, and a stirring island is provided inside the body to gently stir the sediment formed between the tank wall of the body and the isolation tube. This system is characterized by being equipped with a sludge scraping machine that scrapes up the settled sludge at the bottom of the tank body.

(実施例) 次に、本発明を図示の実施例について詳細に説明すれば
、(1)は上方を円柱状もしくは多角柱状に形成すると
ともに、下方延長部は下に向i−1て径が小さくなる円
錐状に形成した槽体であって、診槽体(1)内の中央に
は螺線状流路を有する内筒(2)をその下端開口と槽底
との間に所要の間隔があり、且つ上端が槽体(1)の上
端より低位置にあるように設(プるとともに内筒(2)
と槽壁の中間には上端を・水位線より突出する円柱状の
隔離筒(3)が該内筒(2ンを囲むように設けられ、ま
た、内筒(2)の下方には排水供給、D(41と気体供
給口(5)がそれぞれ位置させである。きらに、槽体(
1)内には該槽体(1)の槽壁と隔離筒(3)とのIL
41に形成される沈澱部を綬やかに撹拌する棒状の攪拌
翼(7)をその上端が僧体(1)の高さの約半分程度の
位置にあるよう設けるとともに槽体(1)の底部に沈澱
した汚泥を掻寄せる汚泥掻寄機(8)が設りられ、また
槽体(1)の上端には越流口(0)が設けられている。
(Embodiment) Next, the present invention will be described in detail with reference to the illustrated embodiment. In (1), the upper part is formed into a cylindrical or polygonal prism shape, and the lower extension part has a diameter decreasing in the downward direction i-1. The tank body is formed into a conical shape that becomes smaller, and an inner cylinder (2) having a spiral flow path is placed in the center of the diagnostic tank body (1) with a required distance between the lower end opening and the tank bottom. and the upper end of the tank body (1) is lower than the upper end of the tank body (1).
A cylindrical isolation tube (3) with its upper end protruding above the water level line is provided between the tank wall and the tank wall so as to surround the inner tube (2). , D (41) and the gas supply port (5) are located respectively.
1) Inside is an IL between the tank wall of the tank body (1) and the isolation tube (3).
A rod-shaped stirring blade (7) for smoothly stirring the sediment formed in the tank body (1) is installed so that its upper end is approximately half the height of the body (1). A sludge scraper (8) is provided at the bottom to scrape up the settled sludge, and an overflow port (0) is provided at the upper end of the tank body (1).

さらに、内筒(2)と隔離筒(3)により形成きれる下
向流路に6、T流する溢流レペ)Vを上下方向に制御す
る調節装置e (9)が内筒(2)の上部を囲むように
隣接して形成されている。なお、僧体(1)と隔離筒(
3)との間に形成される沈澱部は上方に向って流れる排
水の流速をl−2′頼r以下にすると汚泥の沈澱効率が
よくなるので、僧体(1ノケ上方に向うに従って拡開さ
れるようにしておくことが負荷変動の大きい場合には好
ましく、また、隔離筒(31内の生物処理部の排水の滞
留時間および沈澱部の滞留時間は水駄、原排水の性状、
処理目的に応じて所定時間をとれるようにする。また、
リン除去を目的とする場合には、曝気部へ硫酸バンド等
の凝集剤を添加する薬注装置を別に設けてもよい。
Furthermore, an adjustment device e (9) for vertically controlling overflow V flowing into the downward flow path formed by the inner cylinder (2) and the isolation cylinder (3) is connected to the inner cylinder (2). are formed adjacent to each other so as to surround the upper part of the In addition, the monk's body (1) and the isolation tube (
3) The sedimentation area formed between the sludge body (1 no. and It is preferable to keep the wastewater in the biological treatment section in the isolation tube (31) and the settling section depending on the properties of the wastewater, raw wastewater, etc.
A predetermined amount of time can be taken depending on the purpose of processing. Also,
When the purpose is to remove phosphorus, a chemical injection device for adding a flocculant such as sulfuric acid to the aeration section may be separately provided.

このように構成されたものは、槽体(1)に活性汚泥を
収容しておき、内筒(2)の下方に位置させた排水供給
口(4)と気体供給口(5)から排水と酸素を含む気体
を供給して吹込んだ気体により活性汚泥と排水とを混合
するとともにエアリフト効果忙より液の循環を行うもの
であるが、内筒(2)内では気体と液の混合流が乱流ジ
ェットとなって排水〜活性汚泥および酸素を含んだ気体
は急激な接触が繰返されて接触効率は極めて高いものと
なる。また、円筒(2)と隔離筒(3)との間の下向流
路に入った活性汚泥は排水と並流状態で接触し、排水は
下向流路中でも吸着酸化作用を受けて浄化され、該下向
流路の下端から円筒(2)の上向流路に入って循環する
一方で一部の液は循環流から外れて槽体(υと隔離面(
3)の曲の上向流路に入る。そして、この上+il流路
は汚泥のみだれがないよう綬やかに回転する撹拌翼(7
)が槽体(1)の槽壁と隔離筒(3)との間の沈澱部に
設けられていることによって静かに攪拌されて前記生物
処理で酸化分解された液と活性汚泥とが分離され、浄化
された液は沈澱部を上昇して越流口(6)を経て槽外に
流出し、一方沈澱した活性汚泥は僧体(1)の底部に設
けられている汚泥掻寄機(8)によりiき集められて排
水とともに再び中央の内WJ(2)に流入して再循環す
る。なお、再循環する液量は内筒(2)の上部に瞬接し
て設けられた調節装N(9)の61 流レベルを上下方
向に制御することによって自由に調節することができ、
また、空気量を変化させることによっても自由に調節で
きるので負荷変動に対して自由自在に対応かできる。ま
た、活性汚泥濃度の調整は汚泥掻寄機(8)で進められ
た汚泥を槽底に続かせた汚泥引抜管部の弁をタイマ作動
させるなどして自動的に系外へ排出すればよいし、停電
、故障等によ沙装置が停止した場合を考慮して返送汚泥
ラインQ4)が設けられている場合には装置の停止時に
沈降した活性汚泥を該返送汚泥ラインαυより槽体(1
)内に返送することができるので運転再開が容易となる
。さらに、排水の硝化・脱窒を目的とする場合には、前
記生物処理部で硝化工程を行うとともに沈澱部で脱窒工
程を行えばよく、脱窒工程で発生する狗ガス等による汚
泥の浮上は撹拌翼(7)が設けられていることによりN
2ガスと汚泥とが積極的に分離されるので防止できる。
With this structure, activated sludge is stored in the tank body (1), and waste water is supplied from the waste water supply port (4) and gas supply port (5) located below the inner cylinder (2). Activated sludge and waste water are mixed by the supplied gas containing oxygen and the blown gas is used to circulate the liquid due to the air lift effect, but inside the inner cylinder (2), a mixed flow of gas and liquid is generated. A turbulent jet forms, and rapid contact between the wastewater, activated sludge, and oxygen-containing gas is repeated, and the contact efficiency becomes extremely high. In addition, the activated sludge that has entered the downward channel between the cylinder (2) and the isolation tube (3) comes into contact with the wastewater in a parallel flow state, and the wastewater is purified by adsorption and oxidation even in the downward channel. , while the liquid enters the upward flow path of the cylinder (2) from the lower end of the downward flow path and circulates, some of the liquid leaves the circulating flow and enters the tank body (υ) and the isolation surface (
Enter the upward flow path of the song 3). The upper +il flow path is equipped with stirring blades (7
) is provided in the settling part between the tank wall of the tank body (1) and the isolation cylinder (3), so that the liquid oxidized and decomposed in the biological treatment and the activated sludge are separated by gentle stirring. The purified liquid rises through the settling section and flows out of the tank through the overflow port (6), while the settled activated sludge flows through the sludge scraper (8) installed at the bottom of the body (1). ) is collected and flows into the central inner WJ (2) again together with wastewater for recirculation. In addition, the amount of liquid to be recirculated can be freely adjusted by vertically controlling the flow level of the regulating device N (9) provided in instant contact with the upper part of the inner cylinder (2).
Furthermore, since it can be freely adjusted by changing the amount of air, it is possible to respond freely to load fluctuations. In addition, the activated sludge concentration can be adjusted by automatically discharging the sludge advanced by the sludge scraper (8) to the outside of the system by activating the valve of the sludge drawing pipe connected to the bottom of the tank on a timer. However, if a return sludge line Q4) is provided in case the equipment stops due to power outage, breakdown, etc., the activated sludge settled when the equipment is stopped is transferred from the return sludge line αυ to the tank body (1).
), making it easy to restart operations. Furthermore, when the purpose is nitrification/denitrification of wastewater, it is sufficient to carry out the nitrification process in the biological treatment section and the denitrification process in the settling section, and the sludge floats to the surface due to dog gas etc. generated in the denitrification process. is N due to the provision of stirring blades (7).
This can be prevented because the two gases and sludge are actively separated.

(発明の効果) 本発明は前記説明から明らかなように、生物処理と固液
分離を7個の槽体において行うようにしたのでコンパク
ト化されて設置面積を狭くできるうえに槽体内に設けた
内筒を上向流路としたので酸素溶解効率を大きくでき、
また、循環液量を変化させることによシ容易に負荷変動
に対応でき、さらに、固液分離部に攪拌翼今般けて汚泥
の浮上を防止するとともに槽底の汚泥掻寄機によシ汚泥
濃度を高めるとともに脱窒を行うこともできる線種々の
利点があり、建設費゛およびランニンクコストを低減で
きる利点と相俟ち従来の活性汚泥処理装置の問題点を解
決したものとして産業の発展に寄与するところ極めて大
なものである。
(Effects of the Invention) As is clear from the above description, the present invention performs biological treatment and solid-liquid separation in seven tanks, making it more compact and requiring a smaller installation area. Since the inner cylinder has an upward flow path, oxygen dissolution efficiency can be increased,
In addition, the system can easily respond to load fluctuations by changing the amount of circulating fluid.Furthermore, a stirring blade in the solid-liquid separation section prevents sludge from floating up, and a sludge scraper at the bottom of the tank removes the sludge. It has various advantages in that it can increase the concentration and also perform denitrification, and together with the advantage of reducing construction costs and running costs, it has developed as a solution to the problems of conventional activated sludge treatment equipment. The contribution it makes is extremely large.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の実施例を示す一部切欠正面図、第2図
は従来のこの種活性汚泥処理装置の一部切欠正面図であ
る。 (1):槽体、(2):内筒、(3):隔離筒、(4)
:排水供給口、(5):気体供給口、(6):越流口、
(7):攪拌翼、(8)二汚泥掻寄機。 特許出願人 日本碍子株式会社 第1図 第 2 図
FIG. 1 is a partially cutaway front view showing an embodiment of the present invention, and FIG. 2 is a partially cutaway front view of a conventional activated sludge treatment apparatus of this type. (1): Tank body, (2): Inner cylinder, (3): Isolation cylinder, (4)
: Drainage supply port, (5): Gas supply port, (6): Overflow port,
(7): Stirring blade, (8) Two sludge scrapers. Patent applicant: Nippon Insulators Co., Ltd. Figure 1 Figure 2

Claims (1)

【特許請求の範囲】 l、上方部に越流口(6)を有する槽体(1)内に内筒
(2)と該内筒(2)を囲む隔離筒(3)を該@陥部(
3)の上端を水位線上に突出させて設けるとともに眼内
WJ (2)の下方に排水供給口(4)と気体供給口(
5)をそれぞれ位置させ、さらに、槽体(1)内には該
槽体(1)の槽壁と隔離筒(3)との間に形成される沈
澱部を緩やかに攪拌する攪拌翼(7)と該槽体(1)の
底部に沈澱した汚泥を掻寄せる汚泥掻寄機(8)を設け
たことを特徴とする活性汚泥処理装置。 2、内@(2)が螺旋状流路を有するものである特許請
求の範囲第1項記載の活性汚泥処理装置。
[Claims] l. An inner cylinder (2) and an isolation cylinder (3) surrounding the inner cylinder (2) are placed in the tank body (1) having an overflow port (6) in the upper part. (
3) with the upper end protruding above the water level line, and a drainage supply port (4) and a gas supply port (4) below the intraocular WJ (2).
Further, within the tank body (1) there are stirring blades (7) that gently stir the sediment formed between the tank wall of the tank body (1) and the isolation cylinder (3). ) and a sludge scraper (8) for scraping the settled sludge at the bottom of the tank body (1). 2. The activated sludge treatment apparatus according to claim 1, wherein the inner part (2) has a spiral flow path.
JP58097324A 1983-05-31 1983-05-31 Activated sludge treating apparatus Granted JPS6084198A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58097324A JPS6084198A (en) 1983-05-31 1983-05-31 Activated sludge treating apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58097324A JPS6084198A (en) 1983-05-31 1983-05-31 Activated sludge treating apparatus

Publications (2)

Publication Number Publication Date
JPS6084198A true JPS6084198A (en) 1985-05-13
JPH0233438B2 JPH0233438B2 (en) 1990-07-27

Family

ID=14189299

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58097324A Granted JPS6084198A (en) 1983-05-31 1983-05-31 Activated sludge treating apparatus

Country Status (1)

Country Link
JP (1) JPS6084198A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01207194A (en) * 1988-02-15 1989-08-21 Nippon Steel Corp Activated sludge treatment method using immobilized carrier
JPH07124580A (en) * 1993-05-20 1995-05-16 Tetsuo Nishida Agitating treatment tank, culture treatment tank and water treatment equipment jointly provided with these tanks
US5725770A (en) * 1994-03-17 1998-03-10 Fungi-Gulp Pty. Ltd. Waste treatment plant and process
CN109205834A (en) * 2018-09-27 2019-01-15 江苏国创新材料研究中心有限公司 A kind of processing unit of deep purification of wastewater high-concentration resin desorption liquid
JP2019018194A (en) * 2017-12-01 2019-02-07 シンユー技研株式会社 Sewage purification equipment
JP2019018136A (en) * 2017-07-14 2019-02-07 シンユー技研株式会社 Sewage purification equipment
CN111484106A (en) * 2020-04-26 2020-08-04 浙江洪福环保有限公司 Industrial water sterilization and disinfection device
CN114044573A (en) * 2021-12-06 2022-02-15 北京东方启源环保科技有限公司 Dynamic circulation anaerobic ammonium oxidation biological denitrification system

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Publication number Priority date Publication date Assignee Title
CN109924151B (en) * 2019-03-20 2021-03-09 陈子锐 Prawn culture device and method capable of continuously concentrating and discharging pollution

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01207194A (en) * 1988-02-15 1989-08-21 Nippon Steel Corp Activated sludge treatment method using immobilized carrier
JPH07124580A (en) * 1993-05-20 1995-05-16 Tetsuo Nishida Agitating treatment tank, culture treatment tank and water treatment equipment jointly provided with these tanks
US5725770A (en) * 1994-03-17 1998-03-10 Fungi-Gulp Pty. Ltd. Waste treatment plant and process
JP2019018136A (en) * 2017-07-14 2019-02-07 シンユー技研株式会社 Sewage purification equipment
JP2019018194A (en) * 2017-12-01 2019-02-07 シンユー技研株式会社 Sewage purification equipment
CN109205834A (en) * 2018-09-27 2019-01-15 江苏国创新材料研究中心有限公司 A kind of processing unit of deep purification of wastewater high-concentration resin desorption liquid
CN111484106A (en) * 2020-04-26 2020-08-04 浙江洪福环保有限公司 Industrial water sterilization and disinfection device
CN114044573A (en) * 2021-12-06 2022-02-15 北京东方启源环保科技有限公司 Dynamic circulation anaerobic ammonium oxidation biological denitrification system

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