JP2001038386A - Structure of reaction vessel of waste water treatment device - Google Patents
Structure of reaction vessel of waste water treatment deviceInfo
- Publication number
- JP2001038386A JP2001038386A JP11216442A JP21644299A JP2001038386A JP 2001038386 A JP2001038386 A JP 2001038386A JP 11216442 A JP11216442 A JP 11216442A JP 21644299 A JP21644299 A JP 21644299A JP 2001038386 A JP2001038386 A JP 2001038386A
- Authority
- JP
- Japan
- Prior art keywords
- partition wall
- tank
- reaction
- nitrogen
- waste 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.)
- Pending
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
- Activated Sludge Processes (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、広くは下水・廃水
処理分野に関し、特に、廃水からの窒素除去装置に関す
るものである。TECHNICAL FIELD The present invention relates generally to the field of sewage and wastewater treatment, and more particularly to an apparatus for removing nitrogen from wastewater.
【０００２】[0002]
【従来の技術】廃水中から有機物を除去するための従来
の代表的な処理プロセスとして活性汚泥法プロセスがあ
り、窒素化合物および有機物を同時に除去する従来の方
法としては生物学的硝化脱窒法がある。2. Description of the Related Art An activated sludge process is a typical conventional process for removing organic substances from wastewater, and a biological nitrification and denitrification method is a conventional method for simultaneously removing nitrogen compounds and organic substances. .
【０００３】生物学的硝化脱窒法による廃水処理装置の
一例を第８図に示す。生物学的硝化脱窒法による排水処
理装置は、最初沈殿池１２と排水中の窒素化合物を硝酸
態窒素または亜硝酸態窒素にまで酸化（硝化）する硝化
槽１４と硝酸態窒素または亜硝酸態窒素を窒素にまで還
元（脱窒）する脱窒槽１３と最終沈殿池１７とから構成
される。最初沈殿池１２において廃水１１中に含まれる
比較的大きくて重い固形物を除去した後、排水中の窒素
は、硝化槽１４および脱窒槽１３での反応を経て最終的
には窒素ガスの形で大気中に放散されることによって排
水中より除去される。また、排水中の有機物は脱窒槽１
３および硝化槽１４の双方において除去される。FIG. 8 shows an example of a wastewater treatment apparatus based on the biological nitrification and denitrification method. A wastewater treatment apparatus based on the biological nitrification and denitrification method includes a nitrification tank 14 for oxidizing (nitrifying) nitrogen compounds in a sedimentation basin 12 and wastewater to nitrate nitrogen or nitrite nitrogen first, and a nitrate nitrogen or nitrite nitrogen. A denitrification tank 13 for reducing (denitrifying) nitrogen to nitrogen and a final sedimentation tank 17. After removing relatively large and heavy solids contained in the wastewater 11 in the first sedimentation basin 12, nitrogen in the wastewater passes through reactions in the nitrification tank 14 and the denitrification tank 13 and finally in the form of nitrogen gas. It is removed from the wastewater by being released into the atmosphere. The organic matter in the wastewater is stored in the denitrification tank 1
3 and the nitrification tank 14.
【０００４】生物学的硝化脱窒法による廃水処理装置に
代表される、複数の反応槽１３、１４を有する廃水処理
装置における反応槽１３、１４間の仕切りには固定した
位置に仕切り壁２を設置することによって行われること
が一般的である。A partition wall 2 is installed at a fixed position for a partition between the reaction tanks 13 and 14 in a wastewater treatment apparatus having a plurality of reaction tanks 13 and 14 typified by a biological nitrification and denitrification wastewater treatment apparatus. This is generally done by doing
【０００５】排水の水質および水量の時間変動には、変
動の周期によって経年変動（主に集水区域内の人口や工
場数の変化により生じる変動）、季節変動（季節ごとの
水の使用量の変化により生じる変動）、日間変動（日毎
の水の使用量の変化により生じる変動）、および時間変
動（１日のうちの時間毎の水の使用量の変化により生じ
る変動）等がある。これらの排水の水質および水量の時
間変動に対応して、従来は、固定した位置に仕切り壁を
設置することによって隣接する脱窒槽容積と硝化槽容積
との間を区分しているため、硝化循環液の流量や返送汚
泥の流量を変更するという運転管理手法を用いてきた。[0005] The temporal fluctuations in the quality and quantity of drainage water include inter-annual fluctuations (mainly fluctuations caused by changes in the population and the number of factories in the catchment area) and seasonal fluctuations (water usage in each season) depending on the fluctuation cycle. Changes due to changes), daily fluctuations (fluctuations caused by changes in water usage daily), and time fluctuations (fluctuations caused by changes in water usage every hour of the day), and the like. Conventionally, a partition wall is installed at a fixed position to separate the adjoining denitrification tank volume and the nitrification tank volume in response to the time variation of the water quality and amount of these wastewaters. The operation management method of changing the flow rate of the liquid and the flow rate of the returned sludge has been used.
【０００６】[0006]
【発明が解決しようとする課題】しかし、これらを行う
ためのポンプの容量や循環・返送される液中の汚泥濃度
には一定の限界があり、また、仕切り壁が固定されてい
るため、反応槽容積は運転管理条件変更の要素となら
ず、排水の水質及び水量に対応して運転管理条件を変更
する上でのフレキシビリティーが不足しているという問
題があった。However, there is a certain limit to the capacity of the pump for performing these and the sludge concentration in the circulated / returned liquid, and since the partition wall is fixed, the reaction is difficult. The tank volume does not become a factor for changing the operation management conditions, and there is a problem that the flexibility in changing the operation management conditions according to the quality and quantity of the wastewater is insufficient.
【０００７】特に、生物学的硝化脱窒法による廃水処理
設備を用いた廃水からの窒素除去処理において、廃水の
水質および水量の変動は処理成績に大きな影響を及ぼ
す。生物学的硝化脱窒反応は、硝化反応および脱窒反応
という、いずれも微生物による２つの反応から成り立っ
ており、良好な窒素除去処理成績を得るためには、これ
ら２つの反応をバランス良く起こさせることが必用であ
る。硝化反応が不足した場合には、脱窒反応が充分進行
しても有機性窒素あるいはアンモニア性窒素が処理水中
に残留するため、全窒素は良好に除去されず、脱窒反応
が不足した場合には、硝化反応が充分進行しても硝酸性
窒素あるいは亜硝酸性窒素が処理水中に残留するため、
全窒素は良好に除去されない。かかる問題を、例えば廃
水の水質変動との関わりとして見た場合、廃水のＢＯＤ
／Ｔ−Ｎの比率が高くなった場合には、ＢＯＤが脱窒反
応の進行のための還元剤として作用するため、脱窒反応
は進みやすくなるが、硝化槽において起こっている硝化
菌とＢＯＤ除去菌との増殖速度の違いを介しての生存競
争の点からすれば、硝化菌に比べて増殖速度の大きいＢ
ＯＤ除去菌が、より多くのＢＯＤの与えられることによ
って速やかに増殖して硝化槽内で優勢となるため、結局
硝化反応が進行しにくくなる。逆に、廃水のＢＯＤ／Ｔ
−Ｎの比率が低くなった場合には、硝化菌の増殖がＢＯ
Ｄ除去菌の増殖に負けるという要素が減少するため、硝
化反応を進行させやすくなるが、還元剤としてのＢＯＤ
の不足によって脱窒反応が進行しにくくなる。[0007] In particular, in nitrogen removal treatment from wastewater using a wastewater treatment facility by biological nitrification and denitrification, fluctuations in the quality and amount of wastewater greatly affect the treatment results. The biological nitrification and denitrification reaction is composed of two reactions by a microorganism, namely, a nitrification reaction and a denitrification reaction. In order to obtain a good nitrogen removal treatment result, these two reactions are caused to occur in a well-balanced manner. It is necessary. When the nitrification reaction is insufficient, even if the denitrification reaction proceeds sufficiently, the organic nitrogen or ammonia nitrogen remains in the treated water, so that the total nitrogen is not sufficiently removed and the denitrification reaction is insufficient. Because nitrate nitrogen or nitrite nitrogen remains in the treated water even if the nitrification reaction proceeds sufficiently,
Total nitrogen is not removed well. When such a problem is viewed in relation to, for example, fluctuations in the quality of wastewater, the BOD of wastewater
When the ratio of / TN becomes higher, the BOD acts as a reducing agent for the progress of the denitrification reaction, so that the denitrification reaction proceeds more easily. From the viewpoint of survival competition through the difference in the growth rate with the removed bacteria, B having a higher growth rate than the nitrifying bacteria
Since the OD-removing bacteria are rapidly multiplied by being given more BOD and become dominant in the nitrification tank, the nitrification reaction hardly progresses after all. Conversely, BOD / T of wastewater
When the ratio of -N becomes low, the growth of nitrifying bacteria becomes BO
Since the factor of losing the growth of the D-removing bacteria is reduced, the nitrification reaction can easily proceed.
Deficiency makes the denitrification reaction difficult to proceed.
【０００８】第８図に示したような、従来法による生物
学的硝化脱窒法による廃水の窒素除去処理において、脱
窒槽１３および硝化槽１４の活性汚泥濃度はほぼ同じで
あり、返送汚泥流量比を変えることによって、充分に硝
化反応と脱窒反応のバランスをコントロールすることは
困難である。[0008] In the nitrogen removal treatment of wastewater by the conventional biological nitrification and denitrification method as shown in Fig. 8, the activated sludge concentration in the denitrification tank 13 and the nitrification tank 14 is almost the same, It is difficult to sufficiently control the balance between the nitrification reaction and the denitrification reaction by changing the temperature.
【０００９】本発明は、生物学的硝化脱窒法による廃水
処理装置に代表される、複数の反応槽を有する廃水処理
装置における上記の問題点に対処するための具体的手法
を提示するものであり、廃水の水質及び水量の変動によ
る処理性能の悪化を防止することの可能な廃水処理装置
を提供することを目的としている。The present invention proposes a specific method for addressing the above-mentioned problems in a wastewater treatment apparatus having a plurality of reaction tanks, represented by a wastewater treatment apparatus based on a biological nitrification and denitrification method. It is another object of the present invention to provide a wastewater treatment apparatus capable of preventing deterioration in treatment performance due to fluctuations in the quality and amount of wastewater.
【００１０】[0010]
【課題を解決するための手段】本発明は上記課題を解決
するべくなされたものであり、仕切り壁により区分され
た複数の反応槽を有する廃水処理装置において、該仕切
り壁を反応槽の容積を変える移設可能壁とすることを特
徴とする廃水処理装置によってかかる目的を達成したも
のである。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and in a wastewater treatment apparatus having a plurality of reaction tanks divided by a partition wall, the partition wall is used to reduce the volume of the reaction tank. This object has been achieved by a wastewater treatment apparatus characterized in that the wall can be changed and relocated.
【００１１】本発明に基づく廃水処理装置においては、
例えば、反応槽内壁に仕切り壁を固定するための側溝を
複数設け、必要によりクレーンでもって仕切り壁を吊り
上げ、吊り下げ、移動させ、反応槽上部から所定の位置
の側溝へ落とし込むことによって、所定の位置に仕切り
壁を固定することとする。廃水の水質および水量が変動
して、硝化液循環液の流量や返送汚泥の流量の変更でも
って対応しきれなくなって本廃水処理装置の処理性能が
悪化した場合に、この仕切り壁を引き上げ、別の位置の
ある側溝に落とし込むことによって、仕切り壁の設置位
置を反応槽内の上流側、もしくは下流側へ移動させ、仕
切り壁により区分された２つの反応槽の容積を各々変化
させる。このように、反応槽間の仕切り壁として移設可
能な仕切り壁を用いることによって、反応槽の容積を必
要により簡易に変更させ、各反応槽における処理時間を
適切な値に制御し、廃水の水質及び水量の時間変動によ
る処理性能の悪化を防止する。In the wastewater treatment apparatus according to the present invention,
For example, by providing a plurality of side grooves for fixing the partition wall to the inner wall of the reaction tank, lifting the partition wall with a crane as necessary, suspending and moving, and dropping the partition wall from the upper part of the reaction tank into a side groove at a predetermined position, thereby obtaining a predetermined groove. The partition wall shall be fixed at the position. If the quality and amount of wastewater fluctuate and the flow rate of the nitrifying liquid and the return sludge cannot be changed due to the change and the treatment performance of the wastewater treatment equipment deteriorates, this partition wall is lifted. The position of the partition wall is moved to the upstream side or the downstream side in the reaction tank by dropping the partition into the side groove having the position, and the volumes of the two reaction tanks separated by the partition wall are respectively changed. In this way, by using a partition wall that can be relocated as a partition wall between the reaction tanks, the volume of the reaction tank can be easily changed as necessary, the processing time in each reaction tank is controlled to an appropriate value, and the quality of the wastewater is controlled. In addition, the processing performance is prevented from deteriorating due to the time variation of the amount of water.
【００１２】[0012]
【発明の実施の形態】本発明の廃水処理装置は生物学的
反応を利用して廃水中の有機物等を除去する装置であ
り、反応槽は脱窒槽、硝化槽、嫌気槽、無酸素槽、好気
槽等である。これらの各槽はそれぞれ単槽であってもよ
く、複数の槽から形成されていてもよい。BEST MODE FOR CARRYING OUT THE INVENTION The wastewater treatment apparatus of the present invention is an apparatus for removing organic substances and the like in wastewater using a biological reaction. The reaction tank is a denitrification tank, a nitrification tank, an anaerobic tank, an oxygen-free tank, Aerobic tank, etc. Each of these tanks may be a single tank, or may be formed from a plurality of tanks.
【００１３】本発明の移設可能仕切り壁は同種の槽間を
仕切るものではなく、反応の異なる槽間を仕切るもので
ある。具体的には、例えば脱窒槽と硝化槽あるいは嫌気
槽と好気槽を仕切る仕切り壁である。The transferable partition wall of the present invention does not partition between tanks of the same type, but partitions between tanks having different reactions. Specifically, for example, it is a partition wall that separates a denitrification tank and a nitrification tank or an anaerobic tank and an aerobic tank.
【００１４】この移設可能仕切り壁を移設する手段とし
ては、仕切り壁を縦方向に引抜いて移動させ移設場所に
落とし込むとか、仕切り壁を横方向に縮退可能な構造と
して縮退させて移設位置まで移動させそこで拡張させる
等を採りうる。この仕切り壁の固定方法としては溝や突
起を利用すればよい。溝は縦溝のみであってもよい。溝
を並行する突条で形成する場合には側面の全長としても
よく、部分的であってもよい。移設可能仕切り壁の移設
範囲は脱窒槽と硝化槽あるいは嫌気槽と好気槽の容積比
（各水面以下の容積の比）で嫌気槽１に対し好気槽１〜
１０程度、通常３〜８程度の範囲が適当である。As means for transferring the removable partition wall, the partition wall is pulled out vertically and moved to drop it to the relocation location, or the partition wall is contracted as a structure that can be retracted in the horizontal direction and moved to the relocation position. Therefore, expansion can be adopted. As a method for fixing the partition wall, a groove or a projection may be used. The groove may be only a vertical groove. When the groove is formed by parallel ridges, it may be the entire length of the side surface or may be partial. The transfer range of the partition wall that can be moved is the denitrification tank and the nitrification tank or the anaerobic tank and the aerobic tank in the volume ratio (the ratio of the volume below each water surface) to the anaerobic tank 1 and the aerobic tank 1 to
A range of about 10, usually about 3 to 8 is appropriate.
【００１５】本発明に基づく廃水処理装置の反応槽の一
例の斜視図を第１図に、平面図を第２図にそれぞれ示し
た。また、従来の廃水処理装置の反応槽の一例の斜視図
は第７図に示した通りである。これらの図を用いて本発
明を詳細に説明する。FIG. 1 is a perspective view and FIG. 2 is a plan view of an example of a reaction tank of the wastewater treatment apparatus according to the present invention. Further, a perspective view of an example of a reaction tank of a conventional wastewater treatment apparatus is as shown in FIG. The present invention will be described in detail with reference to these drawings.
【００１６】本発明に基づく廃水処理装置の反応槽は、
第１図に示したように、反応槽１内に、仕切り壁２を固
定するための側溝３、側溝４および側溝５を有し、仕切
り壁２によって反応槽１を複数の反応槽に区分する構造
となっている。仕切り壁２を、チェーンもしくはワイヤ
により引き上げ、側溝３、側溝４および側溝５のいずれ
かに落とし込むことにより、水流の上流側もしくは下流
側へ移動させることができる。また、反応槽内の水は、
仕切り壁２をオーバーフローする、もしくは、仕切り壁
２に設けた連通口を通過することにより、仕切り壁の上
流側から下流側へ送られる。The reaction tank of the wastewater treatment apparatus according to the present invention comprises:
As shown in FIG. 1, a reaction chamber 1 has side grooves 3, side grooves 4 and side grooves 5 for fixing a partition wall 2, and the reaction tank 1 is divided into a plurality of reaction tanks by the partition wall 2. It has a structure. By lifting the partition wall 2 with a chain or a wire and dropping it into any of the side grooves 3, 4 and 5, the partition wall 2 can be moved upstream or downstream of the water flow. The water in the reactor is
By overflowing the partition wall 2 or passing through a communication port provided in the partition wall 2, the air is sent from the upstream side to the downstream side of the partition wall.
【００１７】また、本発明に基づく廃水処理装置の反応
槽においては、第３図に示したように、仕切り壁を複数
の板状の部品（仕切り壁２ａおよび仕切り壁２ｂ）でも
って構成させ、側溝からの引き上げ、および側溝への落
とし込みの作業に適した大きさと重さを有する部品でも
って構成した仕切り壁としても良い。また、第４図に示
したように、移設可能な仕切り壁を構成する板状部品を
クレーンでもって移動させる際に用いるワイヤーロー
プ、チェーン等を固定保持するために、該板状部品に突
出物を有していることは、仕切り壁の移設作業上の利便
を提供する。かかる突出物は、該板状部品の表裏両面に
装備しても良く、また、複数固装備しても良い。さら
に、移設可能な仕切り壁を構成する板状部品が、第５図
に示したように、開口部を有していること、あるいは第
６図に示したように、切り欠き部を有していることは、
該板状部品をクレーンでもって移動させる際に用いるワ
イヤーロープなどを固定、保持するのに役立つため、仕
切り壁の移設作業上の利便を提供すると共に、構成され
た仕切り壁を介しての汚泥混合液の流通を可能にするこ
とができる。Further, in the reaction tank of the wastewater treatment apparatus according to the present invention, as shown in FIG. 3, the partition wall is constituted by a plurality of plate-like parts (partition wall 2a and partition wall 2b), The partition wall may be configured with parts having a size and weight suitable for the work of lifting from the side groove and dropping into the side groove. In addition, as shown in FIG. 4, in order to fix and hold a wire rope, a chain, and the like used when moving a plate-like component constituting a removable partition wall with a crane, a projecting object is formed on the plate-like component. Has the convenience in the transfer operation of the partition wall. Such protrusions may be provided on both front and back surfaces of the plate-shaped part, or a plurality of protrusions may be fixedly provided. Further, the plate-like component constituting the partition wall which can be relocated has an opening as shown in FIG. 5, or has a notch as shown in FIG. Is that
Since it is useful to fix and hold a wire rope or the like used when moving the plate-like component by using a crane, it provides convenience in the transfer operation of the partition wall, and mixes sludge through the configured partition wall. The liquid can be distributed.
【００１８】移設可能仕切り壁を移設する時期は廃水処
理装置の処理能力が低下したときであり、処理装置から
の流出水の全窒素、アンモニア態窒素、硝酸態窒素、亜
硝酸態窒素、全リン、リン酸イオン等の少なくとも１つ
を指標として測定し、それが設定値を上まわったときに
行えばよい。この設定値は原則として廃水処理装置の流
出水が排水規準を越えないように定められる。前記指標
の測定点は処理装置からの流出水でなく、脱窒槽、硝化
槽、嫌気槽、好気槽等の流出水であってもよい。その場
合、予め処理装置の流出水の性状との関係を調べてお
く。The transferable partition wall is moved when the treatment capacity of the wastewater treatment apparatus is reduced, and the total effluent water, ammonia nitrogen, nitrate nitrogen, nitrite nitrogen, and total phosphorus of the effluent from the treatment apparatus are reduced. , Phosphate ion or the like as an index, and the measurement may be performed when the measured value exceeds a set value. This set value is determined in principle so that the effluent of the wastewater treatment apparatus does not exceed the drainage standard. The measurement point of the index may be effluent from a denitrification tank, a nitrification tank, an anaerobic tank, an aerobic tank, or the like, instead of the effluent from the processing apparatus. In that case, the relationship with the properties of the effluent of the treatment apparatus is checked in advance.
【００１９】[0019]
【実施例】本発明に基づく廃水処理装置の反応槽を用い
た廃水処理の実施例を以下に示す。第１図に示す本発明
に基づく反応槽、および、第７図に示す従来技術に基づ
く反応槽を用いて、廃水からの窒素除去性能を調査し
た。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of wastewater treatment using a reaction tank of a wastewater treatment apparatus according to the present invention will be described below. Using the reactor according to the present invention shown in FIG. 1 and the reactor according to the prior art shown in FIG. 7, the performance of removing nitrogen from wastewater was investigated.
【００２０】本実施例では、本発明に基づく反応槽およ
び従来技術に基づく反応槽の両者において、水流の上流
側の反応槽を脱窒槽とし、下流側の反応槽を硝化槽とし
た。In this embodiment, in both the reaction tank according to the present invention and the reaction tank according to the prior art, the reaction tank upstream of the water flow was a denitrification tank and the reaction tank downstream was a nitrification tank.
【００２１】表１に運転条件を示す。Table 1 shows the operating conditions.
【表１】 [Table 1]
【００２２】本発明に基づく反応槽では、仕切り壁の位
置の移動が可能であることから、処理水の分析結果を基
に以下の通り脱窒槽および硝化槽の容積を設定した。 処理水中にアンモニア態窒素が検出される場合に
は、脱窒槽容積が１５Ｌ、硝化槽が２５Ｌとなるよう仕
切り壁を移動させる。 処理水中にアンモニア態窒素が検出されない場合に
は、脱窒槽容積が２５Ｌ、硝化槽が１５Ｌとなるよう仕
切り壁を移動させる。In the reaction tank according to the present invention, since the position of the partition wall can be moved, the volumes of the denitrification tank and the nitrification tank were set as follows based on the analysis result of the treated water. When ammonia nitrogen is detected in the treated water, the partition wall is moved so that the denitrification tank volume becomes 15 L and the nitrification tank becomes 25 L. When ammonia nitrogen is not detected in the treated water, the partition wall is moved so that the denitrification tank volume becomes 25 L and the nitrification tank becomes 15 L.
【００２３】表２に廃水及び処理水の水質分析結果の平
均値を示す。Table 2 shows the average values of the results of the water quality analysis of the wastewater and the treated water.
【表２】 [Table 2]
【００２４】表２に示す通り、本発明に基づく反応槽の
処理水の全窒素濃度（Ｔ−Ｎ）は、従来技術に基づく反
応槽のそれよりも低くなった。また、従来技術に基づく
反応槽の処理水のアンモニア態窒素濃度、および亜硝酸
態窒素濃度と硝酸態窒素濃度との和(ＮＯx−Ｎ）も、従
来技術に基づく反応槽のそれらよりも低くなった。従っ
て、本発明に基づく反応槽を用いて、流入水質および水
量の変動によって生じる処理水質の変動に応じて脱窒槽
容積および硝化槽容積を随時変更することは、処理水Ｔ
−Ｎ濃度の低減に有効であるとの結果を得た。As shown in Table 2, the total nitrogen concentration (TN) of the treated water of the reactor according to the present invention was lower than that of the reactor according to the prior art. In addition, the ammonia nitrogen concentration and the sum of the nitrite nitrogen concentration and the nitrate nitrogen concentration (NO x -N) of the treated water of the reaction vessel based on the prior art are lower than those of the reaction vessel based on the prior art. became. Therefore, using the reaction tank according to the present invention to change the denitrification tank volume and the nitrification tank volume at any time according to the fluctuation of the treated water quality caused by the fluctuation of the inflow water quality and the water amount is equivalent to the processing water T
The result was found to be effective in reducing the -N concentration.
【００２５】[0025]
【発明の効果】本発明に基づく廃水処理装置において
は、反応槽間の仕切り壁として移設可能な仕切り壁を用
い、本廃水処理装置の処理性能が悪化した場合に、この
仕切り壁の設置位置を、水流の上流側、もしくは下流側
へ移動させることによって、仕切り壁により区分された
２つの反応槽の容積を各々変化させる構成とした。これ
により、各反応槽における処理時間を適切な値に制御
し、廃水の水質及び水量の時間変動による処理性能の悪
化を防止することができるという効果がある。In the wastewater treatment apparatus according to the present invention, a partition wall which can be relocated is used as a partition wall between reaction tanks. By moving the water flow upstream or downstream of the water flow, the volumes of the two reaction tanks separated by the partition wall are changed. Thereby, there is an effect that the processing time in each reaction tank is controlled to an appropriate value, and the deterioration of the processing performance due to the time variation of the quality and amount of the wastewater can be prevented.
【図１】 第１図は本発明の１実施例である廃水処理装
置の反応槽の斜視図である。FIG. 1 is a perspective view of a reaction tank of a wastewater treatment apparatus according to one embodiment of the present invention.
【図２】 第２図は上記反応槽の平面図である。FIG. 2 is a plan view of the reaction tank.
【図３】 第３図は本発明の別の実施例である廃水処理
装置の反応槽の斜視図である。FIG. 3 is a perspective view of a reaction tank of a wastewater treatment apparatus according to another embodiment of the present invention.
【図４】 第４図は仕切り壁の一例の斜視図である。FIG. 4 is a perspective view of an example of a partition wall.
【図５】 第５図は仕切り壁の別の例の斜視図である。FIG. 5 is a perspective view of another example of the partition wall.
【図６】 第６図は仕切り壁のさらに別の例の斜視図で
ある。FIG. 6 is a perspective view of still another example of the partition wall.
【図７】 第７図は従来の反応槽の一例の斜視図であ
る。FIG. 7 is a perspective view of an example of a conventional reaction tank.
【図８】 第８図は生物学的窒素除去装置の一例の構成
を示す図である。FIG. 8 is a diagram showing a configuration of an example of a biological nitrogen removing device.
１．反応槽 ２，２ａ，２ｂ．仕切り壁 ３．側溝 ４．側溝 ５．側溝 ６．ワイヤーロープ等取り付け口 ７．開口部 ８．切り欠き １１．廃水 １２．最初沈殿池 １３．脱窒槽 １４．硝化槽 １５．散気装置 １６．硝化循環液 １７．最終沈殿池 １８．返送汚泥 １９．処理水 1. Reaction tank 2, 2a, 2b. Partition wall 3. Gutter 4. Gutter 5. Gutter 6. 6. Attachment holes for wire rope, etc. Opening 8. Notch 11. Wastewater 12. First settling basin 13. Denitrification tank 14. Nitrification tank 15. Diffuser 16. Nitrification circulating fluid 17. Final sedimentation basin 18. Returned sludge 19. Treated water
───────────────────────────────────────────────────── フロントページの続き (72)発明者 澤田 豊志 東京都千代田区丸の内一丁目１番２号 日 本鋼管株式会社内 (72)発明者 田邊 正久 東京都千代田区丸の内一丁目１番２号 日 本鋼管株式会社内 (72)発明者 局 俊明 東京都千代田区丸の内一丁目１番２号 日 本鋼管株式会社内 (72)発明者 宮田 純 東京都千代田区丸の内一丁目１番２号 日 本鋼管株式会社内 (72)発明者 馬場 圭 東京都千代田区丸の内一丁目１番２号 日 本鋼管株式会社内 (72)発明者 宇田川 悟 東京都千代田区丸の内一丁目１番２号 日 本鋼管株式会社内 (72)発明者 武智 辰夫 東京都千代田区丸の内一丁目１番２号 日 本鋼管株式会社内 Ｆターム(参考） 4D028 AA08 BC01 BC18 BC28 4D040 BB52 BB65 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toyoshi Sawada 1-1-2 Marunouchi, Chiyoda-ku, Tokyo Nihon Kokan Co., Ltd. (72) Inventor Masahisa Tanabe 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Sun (72) Inventor's Bureau Toshiaki Inventor Bureau 1-1-2 Marunouchi, Chiyoda-ku, Tokyo Nihon Kokan Co., Ltd. (72) Inventor Jun Miyata 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nihon Kokan Inside (72) Inventor Kei Kei Baba 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nihon Kokan Co., Ltd. (72) Satoru Udagawa 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nihon Kokan Co., Ltd. (72) Inventor Tatsuo Takechi 1-2-1 Marunouchi, Chiyoda-ku, Tokyo Nihon Kokan Co., Ltd. F-term (reference) 4D028 AA08 BC01 BC18 BC28 4D040 BB52 BB65
Claims (2)
を有する廃水処理装置において、該仕切り壁を反応槽の
容積を変える移設可能壁とすることを特徴とする廃水処
理装置1. A wastewater treatment apparatus having a plurality of reaction tanks separated by a partition wall, wherein the partition wall is a transferable wall that changes the volume of the reaction tank.
の溝が設けられ、仕切り壁をこの各溝に、落とし込むこ
とによって移設可能とされている請求項１に記載の廃水
処理装置2. The wastewater treatment apparatus according to claim 1, wherein a plurality of grooves are provided in the longitudinal direction on the opposite inner wall of the reaction tank, and the partition wall can be relocated by dropping into the respective grooves.
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|---|---|---|---|
| JP11216442A JP2001038386A (en) | 1999-07-30 | 1999-07-30 | Structure of reaction vessel of waste water treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11216442A JP2001038386A (en) | 1999-07-30 | 1999-07-30 | Structure of reaction vessel of waste water treatment device |
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| Publication Number | Publication Date |
|---|---|
| JP2001038386A true JP2001038386A (en) | 2001-02-13 |
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ID=16688612
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|---|---|---|---|
| JP11216442A Pending JP2001038386A (en) | 1999-07-30 | 1999-07-30 | Structure of reaction vessel of waste water treatment device |
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| KR100386191B1 (en) * | 2002-03-14 | 2003-06-18 | Dae Yang Biotech Co Ltd | Reaction tank with variable partition |
| KR100416293B1 (en) * | 2001-12-18 | 2004-01-31 | 대림산업 주식회사 | Apparatus for control of water quality using elevating wall in sewage treatment system |
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| KR100386191B1 (en) * | 2002-03-14 | 2003-06-18 | Dae Yang Biotech Co Ltd | Reaction tank with variable partition |
| JP2006320790A (en) * | 2005-05-17 | 2006-11-30 | Hitachi Plant Technologies Ltd | Structure of partition wall in sewage treatment tank |
| JP4570513B2 (en) * | 2005-05-17 | 2010-10-27 | 株式会社日立プラントテクノロジー | Partition wall structure in sewage treatment tank |
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