JP3269722B2 - Sewage treatment tank - Google Patents
Sewage treatment tankInfo
- Publication number
- JP3269722B2 JP3269722B2 JP30859993A JP30859993A JP3269722B2 JP 3269722 B2 JP3269722 B2 JP 3269722B2 JP 30859993 A JP30859993 A JP 30859993A JP 30859993 A JP30859993 A JP 30859993A JP 3269722 B2 JP3269722 B2 JP 3269722B2
- Authority
- JP
- Japan
- Prior art keywords
- carrier
- tank
- sewage treatment
- treatment tank
- baffle plate
- 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 - Lifetime
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】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【産業上の利用分野】本発明は、汚水処理槽に係り、特
に下水・し尿・産業排水などの有機性排水を、微生物固
定化担体を利用して生物学的に処理する汚水処理槽に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewage treatment tank, and more particularly to a sewage treatment tank for biologically treating organic wastewater such as sewage, human waste, and industrial wastewater using a microorganism-immobilized carrier.
【０００２】[0002]
【従来の技術】近年、活性汚泥法、生物膜法、固定化微
生物法などの普及が著しいが、土地利用の効率化が叫ば
れる国内においては、より省面積で処理が可能な高性能
汚水処理装置の開発が急務である。この中で、特に微生
物固定化担体を利用する汚水処理装置は、担体素材の性
能向上と相まって注目を集めている。2. Description of the Related Art In recent years, the activated sludge method, biofilm method, immobilized microorganism method and the like have been remarkably widespread. The development of equipment is urgent. Among them, a sewage treatment apparatus using a microorganism-immobilized carrier has attracted attention, particularly in conjunction with the improvement of the performance of the carrier material.
【０００３】本発明者らは、図１１に示す固定化担体を
利用した汚水処理装置の開発を行ってきたが、その開発
過程で次のような技術的課題に遭遇した。すなわち、固
定化担体が被処理水とともに生物反応槽を流下する結
果、反応槽先端部の担体濃度が低下し、末端部の担体濃
度が高くなり、それに伴って処理性能が著しい低下をき
たした。また、担体濃度の片寄りを補正する為に、生物
反応槽末端から先端へ固定化担体をポンプで返送するラ
インを設置したが、ポンプにより固定化担体が破壊され
る傾向が認められた。The present inventors have developed a wastewater treatment apparatus using an immobilized carrier shown in FIG. 11, but encountered the following technical problems in the development process. That is, as a result of the immobilized carrier flowing down in the biological reaction tank together with the water to be treated, the carrier concentration at the tip of the reaction tank was reduced, and the carrier concentration at the terminal was increased, and the treatment performance was significantly reduced accordingly. In addition, a line for pumping back the immobilized carrier from the end of the biological reaction tank to the tip was installed to correct the deviation of the carrier concentration, but the pump was found to break the immobilized carrier.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、上記した問
題を解決し、担体濃度分布の形成に伴う処理性能の低下
を防止し、担体を循環させて分散できる汚水処理槽を提
供することを課題とする。An object of the present invention is to provide a sewage treatment tank which solves the above-mentioned problems, prevents a decrease in treatment performance due to formation of a carrier concentration distribution, and circulates and disperses a carrier. Make it an issue.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するため
に、本発明では、微生物を固定化した担体を浮遊状態で
保持する汚水処理槽において、槽内に流れ方向に対し垂
直に複数枚の阻流板を設け、少なくとも部分的な循環流
を形成させる担体の移送装置を阻流板の開口部に配備す
ると共に、該槽の一端に原水流入部を他端に処理水流出
部を設け、該流出部に前記担体の流出を阻止する手段を
配備することとしたものである。前記汚水処理槽におい
て、担体の移送装置はプロペラ式攪拌機、ポンプ等を使
用でき、また、槽底部に含酸素気体供給手段、例えば散
気装置等を設け好気性の汚水処理槽とすることができ
る。According to the present invention, there is provided a sewage treatment tank for holding a carrier having microorganisms immobilized thereon in a suspended state. A baffle plate is provided, and a carrier transfer device for forming at least a partial circulation flow is provided at an opening of the baffle plate, and a raw water inflow portion is provided at one end of the tank and a treated water outflow portion is provided at the other end, The outlet is provided with means for preventing the carrier from flowing out. In the sewage treatment tank, a carrier transfer device can use a propeller-type stirrer, a pump, or the like, and an aerobic sewage treatment tank can be provided with an oxygen-containing gas supply means, for example, a diffuser, at the bottom of the tank. .
【０００６】上記のように、本発明は、濃縮による担体
濃度、即ち微生物濃度の偏りに起因する汚水処理装置の
性能悪化を解消するため、その手段として水流を発生さ
せる移送装置と、流れを導く阻流板を併用して、少なく
とも部分的な循環流を生じさせて該担体を分散させてい
る。ここで、阻流板とは、上方、下方、又は左右端の少
なくともいずれかが開口しており、流体の流れを阻害す
るものをいう。As described above, the present invention solves the problem of deterioration in the performance of a sewage treatment apparatus due to the uneven concentration of the carrier, that is, the concentration of microorganisms due to concentration. A baffle is also used to create at least a partial circulation to disperse the carrier. Here, the baffle plate refers to a plate that is open at at least one of the upper, lower, and left and right ends and obstructs the flow of fluid.
【０００７】本発明に使用する固定化担体としては、
砂、活性炭、プラスチック片、スポンジ、親水性ゲルな
どの流動性担体があるが、本発明はこれらの担体の適用
に限定されるものではない。なお、担体への微生物固定
化手段としては付着固定化法が一般的であるが、包括固
定化法も適用可能である。本発明において循環流を形成
する担体移送手段としては、プロペラ式攪拌機が好まし
いが、これに限定されるものではない。また、ポンプと
しては、一般的な渦巻ポンプでは担体が破壊される場合
があるので、特殊仕様のポンプ（無閉塞ボルテックス
型、エゼクタポンプなど）を使用するとよい。[0007] The immobilization carrier used in the present invention includes:
There are fluid carriers such as sand, activated carbon, plastic pieces, sponges and hydrophilic gels, but the invention is not limited to the application of these carriers. As a means for immobilizing microorganisms on a carrier, an adhesion immobilization method is generally used, but an inclusive immobilization method is also applicable. In the present invention, a propeller-type stirrer is preferable as the carrier transfer means for forming a circulating flow, but is not limited thereto. In addition, as a pump, a carrier may be broken in a general volute pump, and therefore, a pump with a special specification (a non-blocking vortex type, an ejector pump, or the like) may be used.
【０００８】また担体移送機の設置水深は、任意の水深
に取り付けられるように、移送機の昇降機構が備わって
いるのが望ましい。また担体移送機の移送水量は、周波
数制御によるモータ回転数の変更等で任意に変更できる
ものが望ましい。担体移送機の駆動装置は、槽内・槽外
いずれに設置してもよく、移送機と一体式でもよい。ま
た本発明を深槽型生物反応槽へ適用する場合は、固定化
担体の返送と反応槽底部での担体沈積の防止を兼ねて、
散気装置の下方に担体移送機を設置するのが最も効果的
である。[0008] Further, it is desirable that the carrier transfer device is provided with an elevating mechanism of the transfer device so that the carrier can be installed at an arbitrary water depth. It is desirable that the amount of water transferred by the carrier transfer machine can be arbitrarily changed by changing the number of motor revolutions by frequency control or the like. The drive device of the carrier transfer device may be installed inside or outside the tank, or may be integrated with the transfer device. Further, when the present invention is applied to a deep-type biological reaction tank, the return of the immobilized carrier and the prevention of carrier deposition at the bottom of the reaction tank,
It is most effective to install a carrier transfer device below the air diffuser.
【０００９】また、流出部には、担体の流出を防止する
手段としてスクリーンを設ける必要がある。担体流出防
止手段としては、その他に液体サイクロンや膜分離装置
であってもよい。また、本発明の汚水処理槽は、好気性
処理に適しており、単独でも、また硝化脱窒素法とか、
脱りん脱窒素法の生物処理プロセスの好気処理工程とし
ても好適に適用できる。Further, it is necessary to provide a screen at the outflow portion as a means for preventing the carrier from flowing out. As the carrier outflow prevention means, a liquid cyclone or a membrane separation device may be used. Further, the sewage treatment tank of the present invention is suitable for aerobic treatment, alone or by nitrification denitrification,
It can be suitably applied as an aerobic treatment step in a biological treatment process of the dephosphorization and denitrification method.
【００１０】次に、本発明を図１に基づいて説明する。
図１は本発明の基本構成を示す断面図である。図１にお
いて、１は汚水処理槽であり、２は微生物固定化担体で
あり、３は散気装置、４はブロワー、５は空気管であ
り、ブロワー４を運転して空気を吹込むと好気性の汚水
処理槽１となる。汚水処理槽１内には、阻流板９が設け
られており、阻流板９は上部と下部に開口が設けられ、
下部開口にはプロペラ式攪拌機１０が支柱１１に支持さ
れて配備されており、また、処理槽１には一端に流入口
７が設けられ、他端には担体２の流出を阻止するための
スクリーン６等が設けられた流出口８が配備されてい
る。Next, the present invention will be described with reference to FIG.
FIG. 1 is a sectional view showing a basic configuration of the present invention. In FIG. 1, 1 is a sewage treatment tank, 2 is a carrier for immobilizing microorganisms, 3 is an air diffuser, 4 is a blower, and 5 is an air pipe. It becomes the temper sewage treatment tank 1. In the sewage treatment tank 1, a baffle plate 9 is provided, and the baffle plate 9 is provided with openings in upper and lower portions,
A propeller-type stirrer 10 is provided at the lower opening so as to be supported by a column 11, and the treatment tank 1 is provided with an inlet 7 at one end, and a screen for preventing the carrier 2 from flowing out at the other end. An outlet 8 provided with 6 and the like is provided.
【００１１】このような装置において、流入口から原水
を流入し、プロペラ式攪拌機を動かすことにより、阻流
板を挟んで上下に循環流が形成され、担体を上流側に戻
し、担体２は流出口近くにかたまることなく、槽全体に
分散されることになる。また、ブロワー４を運転し散気
装置３から散気することにより、阻流板によって区分さ
れた区画ごとに旋回流を発生させることができる。そし
て、十分に処理された原水はスクリーン６を通って流出
口８から流出する。In such an apparatus, raw water flows in from the inlet and the propeller-type stirrer is operated to form a circulating flow up and down across the baffle plate. It will be dispersed throughout the tank without clinging near the exit. In addition, by operating the blower 4 and diffusing air from the diffusing device 3, a swirling flow can be generated for each section divided by the baffle plate. Then, the sufficiently treated raw water flows out of the outlet 8 through the screen 6.
【００１２】ここでは、阻流板が上下に開口を有するも
のについて説明したが、阻流板が左右に開口していても
よく、この場合は槽の左右に循環流が形成され、上記と
同様に作用をする。また、その他に上下開口と左右開口
を適当に組合せて適用してもよい。また、担体の移送装
置であるプロペラ式攪拌機は、各阻流板毎に設けても、
１枚おきに設けてもよいし、さらに各阻流板毎に複数台
例えば阻流板に左右に設けることもできる。Here, the case where the baffle plate has an opening at the top and bottom has been described. However, the baffle plate may be opened at the left and right. In this case, a circulating flow is formed at the left and right sides of the tank. Act on. In addition, the upper and lower openings and the left and right openings may be appropriately combined and applied. Also, the propeller type stirrer, which is a carrier transfer device, may be provided for each baffle plate,
It may be provided every other sheet, or may be provided on a plurality of, for example, left and right sides of the baffle plate for each baffle plate.
【００１３】[0013]
【作用】上記のように、本発明によれば、部分的乃至全
槽的に循環流を生ぜしめ、生物反応槽末端部で高濃度に
なった固定化担体を効率的に生物反応槽上流側へ返送す
ることができる。また、局所的な乱流を生じるため担体
の流下速度を抑制させる。その結果、生物反応槽全体に
おいて高い処理速度を得ることができるので、処理効率
を高く維持できる。As described above, according to the present invention, a circulating flow is partially or wholly generated so that the immobilized carrier having a high concentration at the terminal end of the biological reaction tank can be efficiently removed from the upstream side of the biological reaction tank. Can be returned to Further, a local turbulent flow is generated, so that the carrier flowing speed is suppressed. As a result, a high processing speed can be obtained in the entire biological reaction tank, so that high processing efficiency can be maintained.
【００１４】[0014]
【実施例】以下、本発明を図面を用いて具体的に説明す
るが、本発明はこれらの実施例に限定されるものではな
い。 実施例１ 図２は本発明の好気性の汚水処理槽の一例を示す平面図
であり、図３は図２の正面断面図、図４は図２の側面断
面図である。図２〜図４において、図１と同一の符号は
同一の意味を有し、図１との相違点は阻流板９が図２〜
図４においては左右が開口されている点にある。そし
て、プロペラ式攪拌機１０が、阻流板９の左右の開口部
に交互に配置されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be specifically described with reference to the drawings, but the present invention is not limited to these embodiments. Example 1 FIG. 2 is a plan view showing an example of the aerobic sewage treatment tank of the present invention, FIG. 3 is a front sectional view of FIG. 2, and FIG. 4 is a side sectional view of FIG. 2 to 4, the same reference numerals as those in FIG. 1 have the same meanings, and the difference from FIG.
In FIG. 4, the point is that the left and right sides are open. The propeller-type stirrers 10 are alternately arranged at the left and right openings of the baffle plate 9.
【００１５】このようにプロペラ式攪拌機１０を設置す
ることにより槽内に水平の替流と左右に部分循環流を生
じさせることができる。このプロペラ式攪拌機１０は任
意の水深に設置できるが、沈降する担体をまき上げるよ
う底部に配置することが好ましい。また、プロペラ式攪
拌機１０を昇降自在に設置してもよい。また、プロペラ
式攪拌機１０が固定式の場合には、プロペラ設置端を閉
止し、プロペラ部分にのみ切欠を設けてもよい。複数設
置する場合はその設置位置は同じ高さでなくてもよい。By installing the propeller type stirrer 10 in this manner, a horizontal alternate flow and a partial circulation flow can be generated in the tank. The propeller-type stirrer 10 can be installed at an arbitrary water depth, but is preferably arranged at the bottom so as to lift up the settling carrier. Further, the propeller type stirrer 10 may be installed so as to be able to move up and down freely. When the propeller-type stirrer 10 is of a fixed type, the propeller installation end may be closed and a cutout may be provided only in the propeller portion. When a plurality of units are installed, their installation positions do not have to be at the same height.
【００１６】実施例２ 図５は、本発明の好気性の汚水処理槽の他の例を示す縦
断面図である。図５において、図１との相違点は阻流板
９が上側と下側の両方に開口を有する阻流板と下側のみ
に開口を有する阻流板を交互に設け、上下の両側に開口
を有する阻流板９の下側のみにプロペラ式攪拌機１０を
設けた点にある。そして散気板３もプロペラ式攪拌機１
０の水流側にのみ配備されている。こうすることによっ
て、上下に開口を有する阻流板９をはさんで、上下の循
環流がより好適に形成され、担体２の分散がよくなる。Embodiment 2 FIG. 5 is a longitudinal sectional view showing another example of the aerobic sewage treatment tank of the present invention. In FIG. 5, the difference from FIG. 1 is that the baffle plates 9 are alternately provided with baffle plates having openings on both the upper and lower sides and baffle plates having openings only on the lower side, with openings on both upper and lower sides. The point that the propeller type stirrer 10 was provided only on the lower side of the baffle plate 9 having And the diffuser plate 3 is also a propeller type stirrer 1
It is deployed only on the water flow side of 0. By doing so, the upper and lower circulating flows are more preferably formed across the baffle plate 9 having the upper and lower openings, and the dispersion of the carrier 2 is improved.
【００１７】実施例３ 図６は本発明の好気性の汚水処理槽のもう一つの例を示
す平面図であり、図７図６の正面断面図、図８は図６の
側面断面図である。図６〜図８において、図１との相違
点は、阻流板とプロペラ式攪拌機にあり、この実施例で
は図８のように、阻流板９が上下開口と共に、下側の左
右のプロペラ式攪拌機の設置部分が開口され、その開口
部にプロペラ式攪拌機１０が左右に２個づつ各阻流板９
の開口部に配備されている。このように設置することに
より、処理槽全体の左右流に循環流が形成されると共
に、各阻流板９に囲まれた区画ごとにも潜流と部分循環
流が形成でき、より担体の分散効果が増し、処理効率が
よくなる。Embodiment 3 FIG. 6 is a plan view showing another example of the aerobic sewage treatment tank of the present invention, and FIG. 7 is a front sectional view of FIG. 6, and FIG. 8 is a side sectional view of FIG. . 6 to 8, the difference from FIG. 1 lies in the baffle plate and the propeller type stirrer. In this embodiment, as shown in FIG. 8, the baffle plate 9 has upper and lower openings and lower left and right propellers. The installation part of the stirrer is opened, and two propeller-type stirrers 10 are provided on the left and right sides of the baffle plate 9 at the opening.
It is arranged in the opening of. By arranging in this manner, a circulating flow is formed in the left and right flow of the entire processing tank, and a latent flow and a partial circulating flow can be formed in each section surrounded by each baffle plate 9, thereby further improving the carrier dispersion effect. And the processing efficiency is improved.
【００１８】実施例４ 次に、本発明の実施例３の好気性の汚水処理槽を好気槽
として用いた循環式硝化脱窒素法について説明する。図
９に本実施例で用いた装置のフローシートの概略平面図
を示し、図１０に図９の正面断面図を示す。図９、図１
０において、好気性の汚水処理槽１は実施例３の処理槽
と同一である。１３は無酸素槽で、隔壁１２によって好
気槽１と仕切られ下側開口部で連通されている。無酸素
槽１３には水中ミキサー１６が設置されている。Embodiment 4 Next, a circulating nitrification denitrification method using the aerobic sewage treatment tank of Embodiment 3 of the present invention as an aerobic tank will be described. FIG. 9 shows a schematic plan view of a flow sheet of the apparatus used in this embodiment, and FIG. 10 shows a front sectional view of FIG. 9 and 1
At 0, the aerobic sewage treatment tank 1 is the same as the treatment tank of the third embodiment. Reference numeral 13 denotes an oxygen-free tank, which is separated from the aerobic tank 1 by a partition wall 12 and communicates with a lower opening. An underwater mixer 16 is installed in the oxygen-free tank 13.
【００１９】この図を用いて循環式硝化脱窒法を説明す
ると、汚水は流入管７から無酸素槽１３に流入され、ま
た無酸素槽１３には循環式硝化液がポンプ１４から管１
５を通って流入して、活性汚泥によって脱窒素される。
そして、脱窒素処理された処理液は隔壁１２の下側に設
けられた連通口から好気槽１に流入する。好気槽１では
プロペラ式攪拌機１０の作動により循環流が形成され、
担体２は好気槽全体に分散し、散気板３からの曝気によ
って硝化処理され、処理水は担体分離器６を通り流出口
８から流出し、流出液は一部が最終沈殿池に、残部がポ
ンプ１４によって管１５から無酸素槽１３に循環して脱
窒素される。Referring to this figure, the circulating nitrification denitrification method will be described. Sewage flows from an inflow pipe 7 into an anoxic tank 13, and a circulating nitrification liquid is supplied from a pump 14 to a pipe 1 through an anoxic tank 13.
5 and is denitrified by activated sludge.
Then, the treatment liquid subjected to the denitrification treatment flows into the aerobic tank 1 from a communication port provided below the partition 12. In the aerobic tank 1, a circulating flow is formed by the operation of the propeller type stirrer 10,
The carrier 2 is dispersed throughout the aerobic tank, is subjected to nitrification treatment by aeration from the diffuser plate 3, and the treated water flows out of the outlet 8 through the carrier separator 6, and a part of the effluent is discharged into the final sedimentation basin. The remainder is circulated from the pipe 15 to the anoxic tank 13 by the pump 14 to be denitrified.
【００２０】次に、この循環式硝化脱窒素プロセスを用
いて処理した適用例を示す。 （ａ）被処理水 ： 都市下水 （ｂ）装置構成 無酸素槽・・・４００ｍ3 （滞留時間４．０時間） 好気槽 ・・・４００ｍ3 （滞留時間４．０時間） ───────────────────────── 計 ８００ｍ3 （ＨＲＴ＝８．０時間） ・処理水量 ： １００ｍ3 ／時 ・返送汚泥量 ： ５０ｍ3 ／時 ・硝化液循環量 ： ２０００ｍ3 ／時 ・通気量 ： ６００Ｎｍ3 ／時Next, an application example in which the treatment is performed by using the recirculating nitrification denitrification process will be described. (A) Treated water: municipal sewage (b) Equipment configuration Anoxic tank: 400 m 3 (residence time: 4.0 hours) Aerobic tank: 400 m 3 (residence time: 4.0 hours) ──── ───────────────────── Total 800m 3 (HRT = 8.0 hours) ・ Amount of treated water: 100m 3 / hour ・ Amount of returned sludge: 50m 3 / hour ・Nitrification liquid circulation rate: 2000 m 3 / hour ・ Aeration rate: 600 Nm 3 / hour
【００２１】・ＭＬＳＳ ： ２０００ｍｇ／リットル ・プロペラ式攪拌機（フロークリエータ、定格出力１．
３ｋｗ） （ｃ）運転結果 好気槽における担体濃度分布の形成はまったく認められ
かった。また、硝化性能の低下もまったく認められなか
った。MLSS: 2000 mg / liter Propeller type stirrer (flow creator, rated output 1.
3kw) (c) Operation result No formation of the carrier concentration distribution in the aerobic tank was observed at all. Also, no decrease in nitrification performance was observed.
【００２２】[0022]
【発明の効果】以上述べたように、本発明によれば微生
物固定化担体を利用する汚水処理装置において、担体濃
度分布の形成を防止・解消できる。As described above, according to the present invention, formation of a carrier concentration distribution can be prevented and eliminated in a sewage treatment apparatus using a microorganism-immobilized carrier.
【図１】本発明の汚水処理槽の基本構成を示す縦断面
図。FIG. 1 is a longitudinal sectional view showing a basic configuration of a sewage treatment tank of the present invention.
【図２】本発明の好気性の汚水処理槽の一例を示す平面
図。FIG. 2 is a plan view showing an example of the aerobic sewage treatment tank of the present invention.
【図３】図２の正面断面図。FIG. 3 is a front sectional view of FIG. 2;
【図４】図２の側面断面図。FIG. 4 is a side sectional view of FIG. 2;
【図５】本発明の好気性の汚水処理槽の他の例を示す縦
断面図。FIG. 5 is a longitudinal sectional view showing another example of the aerobic sewage treatment tank of the present invention.
【図６】本発明の好気性の汚水処理槽のもう一つの例を
示す平面図。FIG. 6 is a plan view showing another example of the aerobic sewage treatment tank of the present invention.
【図７】図６の正面断面図。FIG. 7 is a front sectional view of FIG. 6;
【図８】図６の側面断面図。FIG. 8 is a side sectional view of FIG. 6;
【図９】本発明の循環式硝化脱窒素法に用いる装置のフ
ローシートの概略平面図。FIG. 9 is a schematic plan view of a flow sheet of an apparatus used for the circulating nitrification denitrification method of the present invention.
【図１０】図９の正面断面図。FIG. 10 is a front sectional view of FIG. 9;
【図１１】従来の汚水処理槽の概略断面図。FIG. 11 is a schematic sectional view of a conventional sewage treatment tank.
１：好気槽（汚水処理槽）、２：固定化担体、３：散気
板、４：ブロワ、５：空気管、６：担体分離機器、７：
流入管、８：流出管、９：阻流板、１０：プロペラ式攪
拌機、１１：支柱、１２：隔壁、１３：無酸素槽、１
４：硝化液循環ポンプ、１５：循環硝化液管、１６：水
中ミキサー1: aerobic tank (sewage treatment tank), 2: immobilized carrier, 3: diffuser plate, 4: blower, 5: air tube, 6: carrier separation device, 7:
Inflow pipe, 8: outflow pipe, 9: baffle plate, 10: propeller-type stirrer, 11: prop, 12: partition, 13: anoxic tank, 1
4: nitrification liquid circulation pump, 15: circulation nitrification liquid pipe, 16: underwater mixer
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山田 武彦 東京都港区港南１丁目６番27号 荏原イ ンフィルコ株式会社内 (56)参考文献 特開 昭50−38959（ＪＰ，Ａ) 特開 昭63−156594（ＪＰ，Ａ) 特開 平３−89997（ＪＰ，Ａ) 特開 平５−192689（ＪＰ，Ａ) 特開 平５−278898（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) C02F 3/02 - 3/10 ──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Takehiko Yamada 1-6-27 Konan, Minato-ku, Tokyo Inside Ebara Infilco Co., Ltd. (56) References JP-A-50-38959 (JP, A) JP-A Sho 63-156594 (JP, A) JP-A-3-89997 (JP, A) JP-A-5-192689 (JP, A) JP-A-5-278898 (JP, A) (58) Fields investigated (Int. Cl 7, DB name) C02F 3/02 -. 3/10
Claims (3)
持する汚水処理槽において、槽内に流れ方向に対し垂直
に複数枚の阻流板を設け、少なくとも部分的な循環流を
形成させる担体の移送装置を阻流板の開口部に配備する
と共に、該槽の一端に原水流入部を他端に処理水流出部
を設け、該流出部に前記担体の流出を阻止する手段を配
備したことを特徴とする汚水処理槽。1. A sewage treatment tank for holding a carrier in which microorganisms are immobilized in a floating state, wherein a plurality of baffles are provided in the tank in a direction perpendicular to the flow direction to form at least a partial circulation flow. The transfer device is provided at the opening of the baffle plate, the raw water inflow portion is provided at one end of the tank, the treated water outflow portion is provided at the other end, and means for preventing the carrier from flowing out is provided at the outflow portion. A sewage treatment tank characterized by the following.
機又はポンプであることを特徴とする請求項１記載の汚
水処理槽。2. The sewage treatment tank according to claim 1, wherein the carrier transfer device is a propeller type stirrer or a pump.
給手段を設けたことを特徴とする請求項１記載の汚水処
理槽。3. The sewage treatment tank according to claim 1, wherein said treatment tank is provided with an oxygen-containing gas supply means at the bottom of the tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30859993A JP3269722B2 (en) | 1993-11-16 | 1993-11-16 | Sewage treatment tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30859993A JP3269722B2 (en) | 1993-11-16 | 1993-11-16 | Sewage treatment tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07136679A JPH07136679A (en) | 1995-05-30 |
| JP3269722B2 true JP3269722B2 (en) | 2002-04-02 |
Family
ID=17982981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30859993A Expired - Lifetime JP3269722B2 (en) | 1993-11-16 | 1993-11-16 | Sewage treatment tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3269722B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW442443B (en) * | 1996-10-29 | 2001-06-23 | Nippon Kokan Kk | Carrier separating screen and waste water treatment facility having the screen |
| WO1999044950A1 (en) * | 1998-03-06 | 1999-09-10 | Nkk Corporation | Method and apparatus for treating waste water |
| KR100653895B1 (en) * | 2004-11-02 | 2006-12-06 | (주)에이엔티이십일 | Device and Method for Treating Wastewater Using Fludized Microorganism Carrier |
| WO2014160350A1 (en) * | 2013-03-14 | 2014-10-02 | Kuehnle Agrosystems, Inc. | Improved wastewater treatment systems and methods |
| CN103395874B (en) * | 2013-07-15 | 2014-12-17 | 上海师范大学 | Improved structure of deflection type internal circulation biomembrane reactor |
-
1993
- 1993-11-16 JP JP30859993A patent/JP3269722B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07136679A (en) | 1995-05-30 |
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