JPS5938833B2 - Biological treatment equipment for high concentration wastewater - Google Patents
Biological treatment equipment for high concentration wastewaterInfo
- Publication number
- JPS5938833B2 JPS5938833B2 JP51138732A JP13873276A JPS5938833B2 JP S5938833 B2 JPS5938833 B2 JP S5938833B2 JP 51138732 A JP51138732 A JP 51138732A JP 13873276 A JP13873276 A JP 13873276A JP S5938833 B2 JPS5938833 B2 JP S5938833B2
- Authority
- JP
- Japan
- Prior art keywords
- packed bed
- floating
- biological treatment
- raw water
- conduit
- 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
Links
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】
本発明は都市下水又は工業廃水等の好気性微生物を利用
した高濃度廃水の生物的処理装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a biological treatment device for highly concentrated wastewater such as urban sewage or industrial wastewater using aerobic microorganisms.
従来より都市下水又は工業廃水等の処理方法として、活
性汚泥法と散水沢床法が一般的に採用されている。Activated sludge method and sprinkling bed method have been commonly used as methods for treating urban sewage or industrial wastewater.
ところが活性汚泥法では、所要敷地面積が大きいこと、
高濃度廃水に適用し難いこと、また廃水濃度に合わせた
返送汚泥量の管理が必要であることなどの欠点がある。However, the activated sludge method requires a large site area;
There are drawbacks such as difficulty in applying it to high-concentration wastewater and the need to manage the amount of returned sludge in accordance with the wastewater concentration.
次に散水沢床法の場合は立型の装置であるから設置面積
は通常の活性汚泥法に較べて狭（て済み、また維持管理
が容易であるという利点があるが以下のような欠点をも
っている。Next, in the case of the sprinkling bed method, since it is a vertical device, the installation area is smaller compared to the normal activated sludge method, and although it has the advantage of being easier to maintain and manage, it also has the following disadvantages: There is.
（ａ） 処理原水が装置上部から入るので、原水の臭
気が装置上部からの排気に伴って周囲に漂う。(a) Since the treated raw water enters from the top of the device, the odor of the raw water wafts around as it is exhausted from the top of the device.
（ｂ） ｒ５床充填物の表面を有効に活用するためには
装置上部で原水を極めて均一に分散させる必要があるが
、これは実装置上きわめ℃困難な問題であり、またたと
え完全均一分散ができたとしても装置を稼動している間
に原水と空気とが触れている原水吐出口に微生物が繁茂
してくるので吐出量の変動はいずれにしても不可避であ
る。(b) In order to effectively utilize the surface of the R5 bed packing, it is necessary to disperse the raw water extremely uniformly at the top of the equipment, but this is an extremely difficult problem in actual equipment, and even if completely uniform dispersion is not possible, Even if this is possible, fluctuations in the discharge amount are unavoidable because microorganisms will grow in the raw water outlet where the raw water and air come into contact while the device is operating.
（ｃ）このために充填物の利用効率が下るだけでな”（
、水の流れにくい偏流部にいわゆる沢床蝿が発生する。(c) This only reduces the utilization efficiency of the filling material.”
, so-called saw bed flies occur in areas where water is difficult to flow.
（ｄ） 微生物による廃水の分解速度は通常の化学反
応のようには速（ないので、微生物との充分な接触時間
を必要とするが、充填物表面を流下する水の滞留時間を
充分長く保つことができないので、処理水を一部原水サ
イドに戻して処理を繰り返す方式をとる必要があるので
装置の効率は低下する。(d) The decomposition rate of wastewater by microorganisms is not as fast as normal chemical reactions, so sufficient contact time with microorganisms is required, but the residence time of water flowing down the packing surface is maintained for a sufficiently long time. Therefore, it is necessary to return some of the treated water to the raw water side and repeat the treatment, which reduces the efficiency of the device.
（ｅ）また処理水の一部を供給側へ再び戻すことは液の
流れ全体としては押出流れから完全混合流れに近づ（こ
とになるので高度の除去率を要求される場合には散水沢
床装置の数を増す必要がある。(e) Returning a portion of the treated water to the supply side changes the overall flow of the liquid from an extrusion flow to a completely mixed flow (this means that if a high removal rate is required, a sprinkling flow is required). It is necessary to increase the number of floor equipment.
（ｆ） Ｐ床を落下してくる水は落下時に空気流を同
伴するので沢床下部のスラッジ沈降分離槽内でのスラッ
ジフロックに気泡が付着してスラッジの沈降が極めて悪
（なる。(f) Since the water falling down the P floor is accompanied by an air current when falling, air bubbles adhere to the sludge flocs in the sludge settling and separation tank at the bottom of the bed, resulting in extremely poor sludge settling.
本発明は上述の如き従来方式の欠点を解消する高濃度廃
水の生物的処理装置を提供せんとするものであって、浮
動充填層を下側にして固定充填層と浮動充填層を設けた
装置本体の下部に気体を供給する導管と原水を供給する
導管を設けると共に該装置本体の上部に処理水排出導管
を設けたことを特徴とするものである。The present invention aims to provide a biological treatment device for highly concentrated wastewater that eliminates the drawbacks of the conventional methods as described above, and is a device in which a fixed packed bed and a floating packed bed are provided with the floating packed bed at the bottom. The apparatus is characterized in that a conduit for supplying gas and a conduit for supplying raw water are provided at the bottom of the main body, and a treated water discharge conduit is provided at the top of the main body.
ここで浮動充填層とは、静止液中の動沈降速度が６０
ｃｒｎ／ Ｓ以下、または液に対する比重が１．５以下
の充填物なら如何なるものでもよい。Here, the floating packed bed means that the dynamic sedimentation velocity in the stationary liquid is 60
Any filler having crn/S or less or a specific gravity relative to the liquid of 1.5 or less may be used.
かかる浮動充填層であれば気液の上向きの流れによって
適宜移動または振動を繰り返し、過剰の微生物膜の生成
を防ぎ、気液流路の閉塞防止に効果があるのである。Such a floating packed bed repeatedly moves or vibrates as appropriate due to the upward flow of gas and liquid, and is effective in preventing the formation of excessive microbial film and clogging of the gas and liquid channels.
以下図面に基づいて本発明の構成を詳述することにする
。The configuration of the present invention will be explained in detail below based on the drawings.
１は塔弐の処理装置本体で支持格子４の上部に固定充填
層が形成されている。Reference numeral 1 denotes the main body of the processing apparatus in the second column, in which a fixed packed bed is formed above a support grid 4.
この固定充填層に充填する充填材は如何なるものでもよ
い。Any kind of filler may be used to fill this fixed packed bed.
３は浮動充填層、５は仕切格子である。3 is a floating packed bed, and 5 is a partition grid.
６は気体分散器であり、その下部中央に気体供給導管７
の開口端を臨ませている。6 is a gas distributor, and a gas supply conduit 7 is installed in the center of the lower part of the distributor.
The open end of the door is facing out.
従って気体供給導管７より適宜の圧力で供給された気体
、例えば純酸素ガスは気体分散器で均一に分散され処理
装置本体１内を上昇し、上部より導出される。Therefore, gas, such as pure oxygen gas, supplied from the gas supply conduit 7 at an appropriate pressure is uniformly dispersed by the gas distributor, rises inside the processing apparatus main body 1, and is led out from the upper part.
図面においては無蓋構造のものを示したが、有蓋構造と
することも可能で、その場合未溶解ガスは循環して使用
する。In the drawings, an open structure is shown, but a covered structure is also possible, in which case the undissolved gas is circulated and used.
８は原水の供給導管で、原水はポンプ（図示せず）によ
って供給導管８より処理装置本体１の下部に供給され、
後記する清浄作用によって処理された後処理水排出導管
９より導出される。8 is a raw water supply conduit, and raw water is supplied from the supply conduit 8 to the lower part of the processing device main body 1 by a pump (not shown).
The post-treated water is discharged from a discharge conduit 9 that has been treated by a cleaning action to be described later.
１０はスラジ沈降槽であり、１１はスラジ抜出管である
。10 is a sludge settling tank, and 11 is a sludge extraction pipe.
次に本発明に係る処理装置による清浄作用を説明するこ
とにする。Next, the cleaning effect of the processing device according to the present invention will be explained.
供給導管８より供給された濃厚原水はまず浮動充填層３
内で気体供給導管７より供給され気体分散器６で分散さ
れた気体と接触し酸化浄化させる。The concentrated raw water supplied from the supply conduit 8 first passes through the floating packed bed 3.
Inside, it contacts the gas supplied from the gas supply conduit 7 and dispersed by the gas distributor 6, and is oxidized and purified.
この浮動充填層３内では充填物が浮動するので液の混合
も起り易（なるが、スライムによる閉塞もな（順調な運
転が出来るようにし、ある程度処理の進んでスライムの
発生が少なくなった（ＢＯＤにしＣ２００ｐｐｍ以下が
望ましい。Since the filler floats in this floating packed bed 3, it is easy for the liquid to mix (but there is no blockage due to slime). It is desirable that the BOD is 200 ppm or less.
）液を固定充填層２へ導入する。) The liquid is introduced into the fixed packed bed 2.
この固定充填層２では充填物によって液の大きな動き、
即ちショートバスは阻止されるので液は全体として押出
流れに極めて近い状態で流通してい（。In this fixed packed bed 2, large movements of liquid due to the filling material,
In other words, the short bath is blocked, so the liquid as a whole flows in a state very close to the extrusion flow (.
即ち、全システムとしては、濃厚原水は下部の浮動充填
層３で処理し、最後の高度処理は固定充填層２で行なう
のである。That is, in the entire system, concentrated raw water is treated in the lower floating packed bed 3, and the final high-level treatment is performed in the fixed packed bed 2.
本発明は上述の如き構成から成るもので、返送汚泥の必
要はなく、処理水が塔上部から出るので臭気の問題がな
い。The present invention has the above-described configuration, and there is no need for return sludge, and since the treated water exits from the upper part of the tower, there is no problem with odor.
また過剰スラジは塔下部の沈降構内を大フロック状で沈
降する。In addition, excess sludge settles in the form of large flocs in the sedimentation chamber at the bottom of the tower.
一般に濃厚廃水を生物処理するときには、スライムの発
生量が多いので、充填物間の目詰りが起り易（なるが、
本発明では原水と接触する装置下部に、気液の流動に伴
なって稼動または振動するような充填物を充填した浮動
充填層を設けているので、充填物の表面に付着した過剰
の微生物膜を自動的に除去出来る。Generally, when biologically treating concentrated wastewater, a large amount of slime is generated, which tends to cause clogging between the fillers.
In the present invention, a floating packed bed filled with a packing that moves or vibrates with the flow of gas and liquid is provided at the bottom of the device that comes into contact with raw water, so that excess microbial film attached to the surface of the packing is can be automatically removed.
実施例 ■
直径１０００ｗφＸ高さ４０００ｖａｎの塔の上部より
２０００Ｔ１．１１１のところに支持格子を設けると共
に、塔の上部より３０００ｖａｎのところに仕切格子を
設け、該支持格子と仕切格子間に直径１０．φのポリス
チレン球（沈降速度１１ ａｍ／ Ｓ、比重１．０４）
を充填し、浮動充填層とし、支持格子の上部には平均直
径１０ｗφの礫を充填し、固定充填層とした。Example 2 A support grid is provided at a distance of 2000T1.111 from the top of a tower with a diameter of 1000wφ and a height of 4000van, and a partition grid is provided at a location of 3000van from the top of the tower, with a diameter of 10.1mm between the support grid and the partition grid. φ polystyrene sphere (sedimentation velocity 11 am/S, specific gravity 1.04)
was filled to form a floating packed bed, and the upper part of the support grid was filled with gravel with an average diameter of 10wφ to form a fixed packed bed.
下表に示した組成の液を２５℃で３０００７／ｈｒの割
合で供給し、空気は８０００Ａ！／＝の割合で供給した
。A liquid having the composition shown in the table below is supplied at a rate of 30007/hr at 25°C, and the air is 8000A! It was supplied at a ratio of /=.
基質（グルコース）の分解率を測定したところ浮動充填
層での除去率が４１％、固定充填層での除去率は７４％
であつ薗過剰スライムによる充填層内での詰りの問題は
発生しなかった。When the decomposition rate of the substrate (glucose) was measured, the removal rate was 41% in the floating packed bed and 74% in the fixed packed bed.
There was no problem of clogging in the packed bed due to excess slime.
実施例 ■
実施例■と同一条件で、浮動充填層のポリスチレン球の
代りに、比重０，９５、直径ＬｏＨφのポリエチレン球
を充填して水の処理を行なった。Example (2) Water was treated under the same conditions as in Example (2) by filling polyethylene spheres with a specific gravity of 0.95 and a diameter of LoHφ in place of the polystyrene spheres in the floating packed bed.
浮動充填層での除去率が３９％、固定充填層での除去率
は７５％であった。The removal rate with the floating packed bed was 39%, and the removal rate with the fixed packed bed was 75%.
過剰スライムによる詰りの問題は発生しなかった。No problems with clogging due to excess slime occurred.
比較実施例
実施例■と同一条件で、充填層は平均粒径１０闘φの礫
を充填物とし全て固定層とした。Comparative Example The same conditions as in Example (2) were used, and the packed bed was filled with gravel with an average particle size of 10 to φ, and all fixed beds were used.
微生物膜形成後はぼ１週間で充填層下部にスライムによ
る詰りか生じて、安定運転が不可能になった。Approximately one week after the microbial film was formed, the lower part of the packed bed became clogged with slime, making stable operation impossible.
図面は本発明の一実施態様を示す概略図である。
２・・・固定充填層、３・・・浮動充填層、７・・・気
体供給導管、８・・・原水供給導管、９・・・処理水排
出導管。The drawings are schematic diagrams illustrating one embodiment of the invention. 2... Fixed packed bed, 3... Floating packed bed, 7... Gas supply conduit, 8... Raw water supply conduit, 9... Treated water discharge conduit.
Claims (1)
を設けた装置本体の下部に気体を供給する導管と原水を
供給する導管を設けると共に該装置本体の上部に処理水
排出導管を設けたことを特徴とする高濃度廃水の生物処
理装置。1. With the floating packed bed on the bottom, a conduit for supplying gas and a conduit for supplying raw water are provided at the bottom of the device body, which has a fixed packed bed and a floating packed bed, and a treated water discharge conduit is installed at the top of the device body. A biological treatment device for highly concentrated wastewater, which is characterized by the following:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51138732A JPS5938833B2 (en) | 1976-11-17 | 1976-11-17 | Biological treatment equipment for high concentration wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP51138732A JPS5938833B2 (en) | 1976-11-17 | 1976-11-17 | Biological treatment equipment for high concentration wastewater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5363766A JPS5363766A (en) | 1978-06-07 |
| JPS5938833B2 true JPS5938833B2 (en) | 1984-09-19 |
Family
ID=15228860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP51138732A Expired JPS5938833B2 (en) | 1976-11-17 | 1976-11-17 | Biological treatment equipment for high concentration wastewater |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5938833B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005313081A (en) * | 2004-04-28 | 2005-11-10 | Nishihara Environment Technology Inc | Water treatment apparatus |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56100694A (en) * | 1980-01-14 | 1981-08-12 | Ebara Infilco Co Ltd | Biological treatment for sewage |
| JP2584386B2 (en) * | 1992-04-15 | 1997-02-26 | 株式会社荏原製作所 | Biological filtration method and device |
| JP2008212865A (en) * | 2007-03-06 | 2008-09-18 | Nihon Suido Consultants Co Ltd | Nitration tank |
-
1976
- 1976-11-17 JP JP51138732A patent/JPS5938833B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005313081A (en) * | 2004-04-28 | 2005-11-10 | Nishihara Environment Technology Inc | Water treatment apparatus |
| JP4568528B2 (en) * | 2004-04-28 | 2010-10-27 | 株式会社西原環境テクノロジー | Water treatment equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5363766A (en) | 1978-06-07 |
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