JPS6126436B2 - - Google Patents
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- Publication number
- JPS6126436B2 JPS6126436B2 JP54032982A JP3298279A JPS6126436B2 JP S6126436 B2 JPS6126436 B2 JP S6126436B2 JP 54032982 A JP54032982 A JP 54032982A JP 3298279 A JP3298279 A JP 3298279A JP S6126436 B2 JPS6126436 B2 JP S6126436B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- biofilm
- carrier
- magnetic carrier
- water
- 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.)
- Expired
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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
- Biological Treatment Of Waste Water (AREA)
Description
【発明の詳細な説明】
本発明は、汚水処理装置に係り、特に好気性菌
を含む微生物が付着した担体を、汚水中で流動さ
せて、汚水中の有機物を分解除去する移動床生物
処理装置を備えた汚水処理装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sewage treatment device, and in particular to a moving bed biological treatment device that decomposes and removes organic matter in the sewage by fluidizing carriers to which microorganisms including aerobic bacteria are attached in the sewage. The present invention relates to a sewage treatment device equipped with a sewage treatment device.
流動床型の生物化学的処理方法は、活性炭、
砂、アンスラサイトなどの担体に生物膜を付着せ
しめることにより、十分な生物量を確保し、同時
に供給された空気および汚水中の有気物と効果的
に接触させ、有機物を分解除去する方法である。
しかし、担体に付着した生物膜は次第に生長増大
し、生物膜内部は嫌気化し、有機物の分解除去作
用には関与しなくなる。従つて、適切な生物膜の
更新を計るため、余剰生物膜の剥離を行い、剥離
後の担体を流動床内に返送することは、汚水処理
の重要な工程であり、処理法全体に与える最大の
影響因子でもある。 The fluidized bed biochemical treatment method uses activated carbon,
A method that secures sufficient biomass by attaching a biofilm to a carrier such as sand or anthracite, and at the same time effectively contacts the aerobic substances in the supplied air and wastewater to decompose and remove organic substances. be.
However, the biofilm attached to the carrier gradually grows and the inside of the biofilm becomes anaerobic and no longer participates in the action of decomposing and removing organic matter. Therefore, in order to appropriately renew the biofilm, peeling off the excess biofilm and returning the peeled carrier to the fluidized bed is an important step in wastewater treatment, and has the greatest impact on the overall treatment method. It is also an influencing factor.
この生物膜剥離は、従来、物理的な強度、例え
ば、機械撹拌などによつて、担体に付着した生物
膜を剥離し、比重の差による分級あるいは重力に
よる沈殿作用により分離回収していた。しかしこ
のような比重の差による固液分離方法は、剥離生
物膜の混入、または担体粒子の流出があり、担体
の回収率が非常に低い。また沈殿分離の場合、沈
殿時間が長いため、生物膜の一部が嫌気化し、流
動床内の有機物分解作用に悪影響を及ぼすことも
ある。 Conventionally, the biofilm attached to the carrier was peeled off using physical strength such as mechanical stirring, and then separated and recovered by classification based on the difference in specific gravity or sedimentation due to gravity. However, in this solid-liquid separation method based on the difference in specific gravity, the recovery rate of the carrier is very low due to the contamination of detached biofilm or the outflow of carrier particles. In addition, in the case of precipitation separation, because the precipitation time is long, part of the biofilm may become anaerobic, which may adversely affect the decomposition of organic matter within the fluidized bed.
本発明の目的は、前記従来技術の欠点を解消
し、循環使用される担体を短時間に効率よく回収
するとともに、過剰に付着した生物膜を効率よく
除去して、流動床における有機物除去作用を安定
に行える汚水処理装置を提供することにある。 The purpose of the present invention is to eliminate the drawbacks of the prior art, to efficiently recover carriers used for circulation in a short period of time, and to efficiently remove excessively attached biofilm, thereby improving the organic matter removal effect in a fluidized bed. The object of the present invention is to provide a sewage treatment device that can be stably operated.
本発明は、好気性菌を含む微生物が付着した磁
性担体を汚水中で流動させて汚水中の有機物を分
解処理する移動床型生物処理装置と、磁性過媒
体が充填されてなり、該磁性過媒体を励磁した
状態にて、前記移動床型生物処理装置から処理水
を導入し、処理水中の生物膜が付着した磁性担体
を捕捉する過装置と、前記磁性過媒体を励磁
した状態にて前記過装置に逆洗水を送給して、
捕捉されている磁性担体から余剰の生物膜を剥離
除去する第１の逆洗手段と、前記磁性過媒体を
消磁した状態にて前記過装置に逆洗水を送給し
て、余剰生物膜が除去された磁性担体を前記磁性
過媒体から分離して回収する第２の逆洗手段
と、を有してなることを特徴とするものである。 The present invention is a moving bed type biological treatment device that decomposes organic matter in wastewater by fluidizing a magnetic carrier to which microorganisms including aerobic bacteria are attached, and a magnetic permeable medium. In a state where the medium is excited, treated water is introduced from the moving bed type biological treatment equipment, and a filtration device captures the magnetic carrier to which the biological film is attached in the treated water, and a Supply backwash water to the filtration device,
A first backwash means for peeling off and removing excess biofilm from the captured magnetic carrier; and supplying backwash water to the filtration device in a state where the magnetic medium is demagnetized to remove excess biofilm. The present invention is characterized by comprising a second backwashing means for separating and recovering the removed magnetic carrier from the magnetic permeable medium.
以下、本発明を添付図面に示す実施例によつて
詳細に説明する。 Hereinafter, the present invention will be explained in detail with reference to embodiments shown in the accompanying drawings.
第１図に示す汚水処理装置は、磁性担体からな
る移動床を形成させる流動床型処理装置１と、こ
の流動床型処理装置から排出される生物膜を付着
した磁性担体を含む処理水を一時的に貯留する処
理水貯留槽１２と、前記移動床型生物処理装置か
ら排出される生物膜が付着した磁性担体を捕捉す
る濾過装置５と、流路切換弁３を含んで形成さ
れ、この流路切換弁３を介して濾過装置５に剥離
用逆洗水を送給し、捕捉された磁性担体に付着し
ている余剰の生物膜を除去する第１の逆洗手段
と、これにより剥離された生物膜を貯留する逆洗
水貯留槽９と、流路切換弁４を含んで形成され、
この流路切換弁４を介して濾過装置５に押出用逆
洗水を送給して捕捉されている磁性担体を分離し
て押出す第２の逆洗手段と、これにより分離され
た磁性担体を貯留する担体貯留槽１０とから主と
して構成されている。 The sewage treatment equipment shown in Fig. 1 includes a fluidized bed treatment equipment 1 that forms a moving bed made of magnetic carriers, and a fluidized bed treatment equipment 1 that temporarily collects treated water containing the magnetic carriers with biofilm attached, which is discharged from the fluidized bed treatment equipment. It is formed of a treated water storage tank 12 for storing water, a filtration device 5 for capturing magnetic carriers with biofilm attached discharged from the moving bed type biological treatment device, and a flow path switching valve 3. a first backwashing means for supplying backwashing water for stripping to the filtration device 5 via the path switching valve 3 to remove excess biofilm adhering to the captured magnetic carrier; It is formed including a backwash water storage tank 9 for storing biofilm and a flow path switching valve 4,
a second backwashing means for feeding backwashing water for extrusion to the filtration device 5 via the flow path switching valve 4 to separate and extrude the captured magnetic carrier; and a second backwashing means for separating and extruding the captured magnetic carrier; It mainly consists of a carrier storage tank 10 for storing .
流動床型処理装置１において、移動床を形成す
る磁性担体には、強磁性粉を造粒した粒子、また
は活性炭、コークス、アンスラサイトなどの気孔
体に強磁性体物質を化学的に含浸させた粒子など
を挙げることができる。磁性担体の粒子は比重が
1.0〜3.0に調整したものが望ましい。磁性担体粒
子の比重が1.0より小さいと、移動床型生物処理
装置内において、汚水中で磁性担体粒子を流動さ
せることが困難となり、又、比重が3.0より大き
いと、生物膜が付着肥厚した磁性担体が、流動床
上部に浮遊しにくいため、この磁性担体を、未だ
生物膜が付着していない、または活性の高い微生
物が付着した磁性担体と分離することが難しくな
る。 In the fluidized bed processing apparatus 1, the magnetic carrier forming the moving bed is made of particles obtained by granulating ferromagnetic powder, or porous bodies such as activated carbon, coke, and anthracite chemically impregnated with a ferromagnetic substance. Examples include particles. The specific gravity of magnetic carrier particles is
Preferably, it should be adjusted to between 1.0 and 3.0. If the specific gravity of the magnetic carrier particles is less than 1.0, it will be difficult to flow the magnetic carrier particles in wastewater in a moving bed type biological treatment equipment, and if the specific gravity is greater than 3.0, the magnetic carrier particles will become thickened with biofilm attached. Since the carrier is difficult to float above the fluidized bed, it becomes difficult to separate this magnetic carrier from the magnetic carrier to which no biofilm has yet adhered or to which highly active microorganisms have adhered.
過装置５には、磁性過媒体が充填されてい
る。磁性過媒体には、鉄、コバルト、ニツケ
ル、およびその化合物からなる強磁性体のウール
などが使用できるが、実用性の面から、ステンレ
ス製ウールが望ましい。過装置５に充填された
磁性過媒体を励磁されるために過装置５の外
部に励磁媒体６が設けられている。励磁媒体に
は、電磁石、または永久磁石などが使用できる。 The diaphragm device 5 is filled with a magnetic diaphragm. As the magnetic medium, ferromagnetic wool made of iron, cobalt, nickel, and their compounds can be used, but from the viewpoint of practicality, stainless steel wool is preferable. An excitation medium 6 is provided outside the magnetic field device 5 to excite the magnetic medium filled in the magnetic field device 5. An electromagnet or a permanent magnet can be used as the excitation medium.
以上の構成において、流動床生物処理装置１に
おいて、磁性担体に付着した微生物は、汚水中の
有機物を分解し、順次生長肥厚するため、磁性担
体の見掛け比重が減少し、微生物を付着した磁性
担体は、流動床上部に浮遊集積し、流動口から流
出し、流路切換弁２、流路切換弁３、および流路
切換弁４を経て、過装置５に流入する。微生物
を付着した担体が過装置５に流入する際、磁性
過媒体は、励磁媒体６によつて励磁され、磁性
担体は、磁性過媒体に捕捉される。過装置５
に処理水中の有機物が、生物膜として、磁性担体
とともに捕捉され、清澄な処理水は、流路切換弁
７、および流路切換弁８を経て放出される。〔第
２図ａ〕。 In the above configuration, in the fluidized bed biological treatment apparatus 1, the microorganisms attached to the magnetic carrier decompose the organic matter in the wastewater and sequentially grow and thicken. is suspended and accumulated in the upper part of the fluidized bed, flows out from the flow port, passes through the flow path switching valve 2, the flow path switching valve 3, and the flow path switching valve 4, and then flows into the filter device 5. When the carriers with the microorganisms attached thereto flow into the magnetic permeable medium 5, the magnetic permeable medium is excited by the excitation medium 6, and the magnetic carriers are captured by the magnetic permeable medium. passing device 5
The organic matter in the treated water is captured as a biofilm together with the magnetic carrier, and the clear treated water is discharged through the flow path switching valve 7 and the flow path switching valve 8. [Figure 2a].
過装置５内の処理水は、流れの剪断力によつ
て磁性担体表面に付着した生物膜が剥離されない
範囲の線速度で流動するのがよい。この線速度は
流動床型生物処理装置１における流動速度がv1で
あるとき、少なくともv1×1.5以下であるのが望
ましい。過装置５における線速度が、流動床型
生物処理装置１内の流動速度より大きすぎると、
生物膜が剥離しやすくなるので好ましくない。 The treated water in the filtration device 5 preferably flows at a linear velocity within a range where the biofilm attached to the surface of the magnetic carrier is not peeled off by the shear force of the flow. This linear velocity is desirably at least v 1 ×1.5 or less when the fluid velocity in the fluidized bed biological treatment apparatus 1 is v 1 . If the linear velocity in the fluidized bed biological treatment device 5 is too large than the fluid velocity in the fluidized bed biological treatment device 1,
This is not preferable because the biofilm is likely to peel off.
次に、第１の逆洗手段により第２図ｂに示す剥
離用逆洗水の導入によつて、磁性過媒体に磁性
担体とともに捕捉された余剰の生物膜は、磁性担
体から剥離され、流路切換弁７、および流路切換
弁８を経て、剥離用逆洗水とともに、逆洗水貯留
槽９に滞留する。この逆洗水貯留槽９に滞留され
た剥離用逆洗水と余剰生物膜は動力沈降により分
離され、上澄の逆洗水は図示していない逆洗水の
原水槽に戻され、余剰生物膜は抜出されて脱水処
理される。なお、磁性担体から余剰生物膜が剥離
されるときに導入される逆洗水は、逆洗水の剪断
力により、磁性担体が磁性過媒体から離脱する
ことなく、余剰生物膜のみが剥離されるように導
入される。移動床型生物処理装置１における流動
速度がｖであれば、生物膜剥離用逆洗水の線速度
は、ｖ×1.5以上であることが必要であり、一般
には５〜10cm／secが望ましい。生物膜剥離用逆
洗水の導入時に、空気を混入する場合、気泡の衝
撃力によつて、余剰生物膜の剥離効果が高まるの
で、逆洗水の線速度を上記値よりも小さくしても
よい。 Next, by introducing backwashing water for peeling as shown in Figure 2b by the first backwashing means, the excess biofilm captured in the magnetic medium along with the magnetic carrier is peeled off from the magnetic carrier and washed away. It passes through the path switching valve 7 and the flow path switching valve 8, and is retained in the backwash water storage tank 9 together with the stripping backwash water. The backwash water for stripping and excess biofilm retained in this backwash water storage tank 9 are separated by powered sedimentation, and the supernatant backwash water is returned to the raw backwash water tank (not shown), and the excess biofilm is The membrane is extracted and dehydrated. In addition, the backwash water introduced when the excess biofilm is peeled off from the magnetic carrier does not allow the magnetic carrier to separate from the magnetic medium due to the shearing force of the backwash water, and only the excess biofilm is peeled off. It will be introduced as follows. If the flow velocity in the moving bed type biological treatment apparatus 1 is v, the linear velocity of the backwash water for biofilm peeling needs to be at least v x 1.5, and is generally desirably 5 to 10 cm/sec. When introducing backwash water for biofilm removal, if air is mixed in, the impact force of the bubbles will increase the effect of removing excess biofilm, so even if the linear velocity of the backwash water is lower than the above value. good.
磁性担体の捕捉操作中および、磁性担体から生
物膜を剥離させる操作中の磁場強度は、磁性担体
によつて異なるが、通常３〜5Kガウスが望まし
い。 The magnetic field strength during the operation of capturing the magnetic carrier and during the operation of peeling the biofilm from the magnetic carrier varies depending on the magnetic carrier, but is usually preferably 3 to 5 K Gauss.
次に、第２の逆洗手段により流路切換弁は第２
図ｃに示すように制御され、押出用逆洗水は、流
路切換弁４を経て過装置５に導入される。この
押出用逆洗水は磁性担体を押出すためのものであ
るから、前述した生物膜剥離のために要する流速
よりも速い流速とし、短時間で行なわせるのが効
率的である。このことから押出用逆洗水は線速度
が５cm／sec以上、一般には10〜20cm／secに調節
されている。この操作中、励磁媒体による磁場は
除かれているので、余剰生物膜が剥離された磁性
担体は、磁性過媒体から簡単に離脱し、流路切
換弁７を経て、担体貯留槽１０に流入する。担体
貯留槽１０に回収された磁性担体は、ライン１１
から移動床型生物処理装置１に戻される。なお第
２図ｂおよび第２図ｃに示される逆洗水導入操作
中、移動床型生物処理装置１から溢流する生物膜
を付着した磁性担体は、流路切換弁２を経て、処
理水貯留槽１２に導入されて一時的に貯留され、
磁性担体捕捉操作時に、ライン１３から流路切換
弁２、流路切換弁３および流路切換弁４を経て、
過装置５に供給される。これにより、逆洗操作
時にあつても移動床型生物処理装置１の処理は連
続的になされる。 Next, the flow path switching valve is operated by the second backwashing means.
The backwash water for extrusion is controlled as shown in FIG. Since this backwash water for extrusion is used to extrude the magnetic carrier, it is efficient to use a flow rate higher than that required for the above-mentioned biofilm peeling and to perform the process in a short time. For this reason, the linear velocity of backwash water for extrusion is adjusted to 5 cm/sec or more, generally 10 to 20 cm/sec. During this operation, the magnetic field caused by the excitation medium is removed, so the magnetic carrier from which the excess biofilm has been peeled off is easily separated from the magnetic medium and flows into the carrier storage tank 10 via the flow path switching valve 7. . The magnetic carrier collected in the carrier storage tank 10 is transferred to the line 11
The water is then returned to the moving bed type biological treatment apparatus 1. During the backwash water introduction operation shown in FIG. 2b and FIG. introduced into the storage tank 12 and temporarily stored,
During the magnetic carrier capturing operation, from the line 13 through the flow path switching valve 2, the flow path switching valve 3, and the flow path switching valve 4,
is supplied to the filter device 5. Thereby, even during the backwash operation, the processing in the moving bed type biological treatment apparatus 1 can be performed continuously.
また、剥離用逆洗水と押出用逆洗水には同一の
原水を用いることができ、かつ前述した線速度に
見合つた逆洗水量を、逆洗操作にあわせて切換制
御可能にすれば、流路切換弁３，４を共用するこ
とも可能である。さらに、逆洗水の原水として、
例えば第１図の流路切換弁８から放流される処理
水を原水槽に導びいて用いることも可能である。 In addition, if the same raw water can be used for backwash water for stripping and backwash water for extrusion, and the amount of backwash water commensurate with the linear velocity described above can be controlled in accordance with the backwash operation, It is also possible to share the flow path switching valves 3 and 4. Furthermore, as raw water for backwash water,
For example, it is also possible to use the treated water discharged from the flow path switching valve 8 shown in FIG. 1 by guiding it to the raw water tank.
実施例
塩化第２鉄の1W／Ｗ％溶液に、石炭系活性炭
（粒径0.6〜0.9mmφ）を流入し、10Kg／cm2の加圧
下で30分浸し、活性炭細孔内に塩化第２鉄を含浸
させ、次に同条件下でPHを５に調節し、水酸化鉄
を析出させた。次いで活性炭を取出し、空気酸化
を１時間行ない、水酸化鉄を強磁性体であるマグ
ネタイトに変態させた磁性担体を得た。Example: Coal-based activated carbon (particle size 0.6 to 0.9 mmφ) was poured into a 1W/W% solution of ferric chloride, and immersed for 30 minutes under a pressure of 10 Kg/cm 2 to form ferric chloride in the activated carbon pores. was impregnated, and then the pH was adjusted to 5 under the same conditions to precipitate iron hydroxide. Next, the activated carbon was taken out and air oxidized for 1 hour to obtain a magnetic carrier in which iron hydroxide was transformed into magnetite, which is a ferromagnetic substance.
この担体を、第１図に示した流動床型生物処理
装置１で有機物除去を行なつた。このときの試料
水は、肉エキス、ペプトンを主成分として、
BOD200ppmに調節した人工水を用いた。１日１
回、この人工下水を投入する回分処理を、連続３
日間行つた結果、約0.5mmの生物膜を付着した担
体を得た。この磁性担体スラリーを、第１図に示
す磁気的過装置５に導入した。このときの磁場
強度は5Kガウスとし、磁性過媒体は、100〜
200umのステンレスウールを５％充てんした。そ
の結果、処理水は10ppm以下となり、活性炭や
砂単独を担体として用いた場合の文献値10〜
20ppmと同等以上の結果が得られた。さらに５
cm／secの線速度で生物膜の剥離を行つたとこ
ろ、生物膜は98％剥離され、回収した磁性担体は
99％に達し、生物膜と磁性担体を完全に分離回収
することができた。 This carrier was subjected to organic matter removal using a fluidized bed type biological treatment apparatus 1 shown in FIG. The sample water at this time was mainly composed of meat extract and peptone.
Artificial water adjusted to a BOD of 200 ppm was used. 1 day 1
This batch treatment of adding artificial sewage is carried out three times in a row.
As a result of conducting the experiment for several days, a carrier with a biofilm of about 0.5 mm attached was obtained. This magnetic carrier slurry was introduced into a magnetic filter device 5 shown in FIG. The magnetic field strength at this time is 5K Gauss, and the magnetic supermedium is 100~
Filled with 5% 200um stainless wool. As a result, the treated water was less than 10 ppm, which is lower than the literature value of 10 when using activated carbon or sand alone as a carrier.
Results equivalent to or better than 20ppm were obtained. 5 more
When the biofilm was removed at a linear velocity of cm/sec, 98% of the biofilm was removed, and the recovered magnetic carrier
It reached 99%, and the biofilm and magnetic carrier could be completely separated and recovered.
以上、本発明によれば、移動床型生物処理に使
用された微生物が付着した担体から、担体のみを
確実に、かつ短時間に分離回収することができ
る。このために、未回収の担体はほとんどなく、
移動床型生物処理装置に新らたに担体を補充する
必要がない。 As described above, according to the present invention, it is possible to reliably and quickly separate and recover only carriers from carriers to which microorganisms are attached and which are used in moving bed type biological treatment. For this reason, there is almost no unrecovered carrier,
There is no need to newly replenish carriers to the moving bed type biological treatment equipment.
第１図は、本発明の一実施例を示す装置系統
図、第２図は、第１図に示す装置の流路切換機構
を示し、ａは通常の生物処理等の原水時の流れを
示すフローシート、ｂは逆洗通水時のフローシー
ト、ｃは磁性担体回収時のフローシートである。
１……移動床型生物処理装置、５……過装
置、６……励磁媒体、９……逆洗水貯留槽、１０
……担体貯留槽、１２……処理水貯留槽。
Fig. 1 is a system diagram of an apparatus showing an embodiment of the present invention, Fig. 2 shows a flow path switching mechanism of the apparatus shown in Fig. 1, and a shows the flow of raw water during normal biological treatment. Flow sheet, b is a flow sheet during backwash water flow, and c is a flow sheet during magnetic carrier recovery. 1... Moving bed type biological treatment device, 5... Passing device, 6... Excitation medium, 9... Backwash water storage tank, 10
...Carrier storage tank, 12...Treatment water storage tank.
Claims (1)
汚水中で流動させて汚水中の有機物を分解処理す
る移動床型生物処理装置と、 磁性過媒体が充填されてなり、該磁性過媒
体を励磁した状態にて、前記移動床型生物処理装
置から処理水を導入し、処理水中の生物膜が付着
した磁性担体を捕捉する過装置と、 前記磁性過媒体を励磁した状態にて前記過
装置に逆洗水を送給して、捕捉されている磁性担
体から余剰の生物膜を剥離除去する第１の逆洗手
段と、 前記磁性過媒体を消磁した状態にて前記過
装置に逆洗水を送給して、余剰生物膜が除去され
た磁性担体を前記磁性過媒体から分離して回収
する第２の逆洗手段と、 を有してなることを特徴とする汚水処理装置。 ２ 前記磁性担体は活性炭に鉄化合物を含浸させ
た後酸化して形成したものとしたことを特徴とす
る特許請求の範囲第１項記載の汚水処理装置。[Scope of Claims] 1. A moving bed type biological treatment device that decomposes organic matter in wastewater by fluidizing magnetic carriers to which microorganisms including aerobic bacteria are attached in wastewater, and a magnetic permeable medium is filled, a filtration device that introduces treated water from the moving bed type biological treatment device in a state in which the magnetic supermedium is excited and captures magnetic carriers to which biological films are attached in the treated water; and a state in which the magnetic supermedium is energized. a first backwashing means for peeling and removing excess biofilm from the captured magnetic carrier by supplying backwash water to the filtration device; A second backwashing means for supplying backwashing water to the device to separate and recover the magnetic carrier from which excess biofilm has been removed from the magnetic permeable medium. Processing equipment. 2. The sewage treatment device according to claim 1, wherein the magnetic carrier is formed by impregnating activated carbon with an iron compound and then oxidizing it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3298279A JPS55124596A (en) | 1979-03-20 | 1979-03-20 | Treatment apparatus for polluted water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3298279A JPS55124596A (en) | 1979-03-20 | 1979-03-20 | Treatment apparatus for polluted water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55124596A JPS55124596A (en) | 1980-09-25 |
| JPS6126436B2 true JPS6126436B2 (en) | 1986-06-20 |
Family
ID=12374076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3298279A Granted JPS55124596A (en) | 1979-03-20 | 1979-03-20 | Treatment apparatus for polluted water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55124596A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104829041A (en) * | 2015-04-15 | 2015-08-12 | 昆明理工大学 | Novel magnetic biological filtration pool |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57147492A (en) * | 1981-03-06 | 1982-09-11 | Ebara Infilco Co Ltd | Biological treatment of organic waste water |
| JPS57150482A (en) * | 1981-03-12 | 1982-09-17 | Ebara Infilco Co Ltd | Biological treatment of organic waste water |
| JPS57190696A (en) * | 1981-05-19 | 1982-11-24 | Mitsubishi Heavy Ind Ltd | Fluidized bed type biological sewage treating method |
| JP2021133263A (en) * | 2020-02-21 | 2021-09-13 | 株式会社フジタ | Water purification system and water purification method |
| CN119504008B (en) * | 2024-11-22 | 2025-10-17 | 南京大学 | Device and method for capturing carbon and removing phosphorus by high-efficiency low-consumption high-load contact stabilization method |
-
1979
- 1979-03-20 JP JP3298279A patent/JPS55124596A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104829041A (en) * | 2015-04-15 | 2015-08-12 | 昆明理工大学 | Novel magnetic biological filtration pool |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55124596A (en) | 1980-09-25 |
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