JPH05192689A - Biological nitrogen removing device - Google Patents
Biological nitrogen removing deviceInfo
- Publication number
- JPH05192689A JPH05192689A JP4008009A JP800992A JPH05192689A JP H05192689 A JPH05192689 A JP H05192689A JP 4008009 A JP4008009 A JP 4008009A JP 800992 A JP800992 A JP 800992A JP H05192689 A JPH05192689 A JP H05192689A
- Authority
- JP
- Japan
- Prior art keywords
- tank
- denitrification
- microorganism
- nitrification
- 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
- Biological Treatment Of Waste Water (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、例えば、下廃水などの
中に存在している各種の窒素化合物を活性汚泥等により
生物学的に処理し、不活性な窒素ガスなどに変換して除
去する生物学的窒素除去装置に関するものである。BACKGROUND OF THE INVENTION The present invention, for example, biologically treats various nitrogen compounds present in sewage wastewater with activated sludge or the like and converts them into inert nitrogen gas and removes them. The present invention relates to a biological nitrogen removing device.
【０００２】[0002]
【従来の技術】従来、下廃水の処理法として脱窒素活性
汚泥法がある。これは、有機性窒素化合物を含む原水を
脱窒槽に導き、脱窒槽内に滞留する混合液中の脱窒菌の
硝酸呼吸ないし亜硝酸呼吸により硝酸性窒素ないし亜硝
酸性窒素の窒素分を不活性な窒素ガスに還元して下廃水
中から除去し、一方で脱窒槽内の混合液を硝化槽に導
き、硝化菌の生物酸化反応によってアンモニア性窒素や
有機性窒素の一部を亜硝酸性窒素ないし硝酸性窒素に分
解し、硝化槽の亜硝酸性窒素ないし硝酸性窒素を含む混
合液の一部を硝化循環液として脱窒槽に返送するととも
に、硝化槽の混合液を処理水として沈殿池等に導くもの
であった。2. Description of the Related Art Conventionally, there is a denitrification activated sludge method as a method for treating sewage wastewater. This introduces raw water containing organic nitrogen compounds to a denitrification tank and inactivates the nitrogen content of nitrate nitrogen or nitrite nitrogen by nitric acid respiration or nitrite respiration of the denitrifying bacteria in the mixture that stays in the denitrification tank. It is reduced to pure nitrogen gas and removed from the wastewater, while the mixed liquid in the denitrification tank is introduced to the nitrification tank, and a part of ammonia nitrogen and organic nitrogen is converted to nitrite nitrogen by the biological oxidation reaction of nitrifying bacteria. Or to decompose it into nitrate nitrogen, and return a part of the mixed solution containing nitrite nitrogen or nitrate nitrogen in the nitrification tank to the denitrification tank as nitrification circulation liquid, and use the mixed solution in the nitrification tank as treated water as a sedimentation tank, etc. Was what led to.
【０００３】[0003]
【発明が解決しようとする課題】しかし、上記した従来
の脱窒素活性汚泥法においては、硝化槽と脱窒槽の合計
滞留時間（合計ＨＲＴ）が約１２〜１６時間も要し、反
応槽（曝気槽）における滞留時間を６〜８時間で設計、
運転している通常の既設下水処理場には適用できない問
題があった。However, in the above-mentioned conventional denitrification activated sludge method, the total residence time (total HRT) of the nitrification tank and the denitrification tank requires about 12 to 16 hours, and the reaction tank (aeration Designed to have a residence time in the tank of 6-8 hours,
There was a problem that could not be applied to the existing existing sewage treatment plant in operation.
【０００４】本発明は上記課題を解決するもので、硝化
槽および脱窒槽における硝化・脱窒速度を高めて被処理
水の槽内滞留時間を短くすることができる生物学的窒素
除去装置を提供することを目的とする。The present invention solves the above problems and provides a biological nitrogen removing apparatus capable of increasing the nitrification and denitrification speeds in a nitrification tank and a denitrification tank to shorten the residence time of the water to be treated in the tank. The purpose is to do.
【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、本発明の生物学的窒素除去装置は、槽内に微生物固
定化担体が内在する脱窒槽および硝化槽を通して被処理
水中の窒素化合物を硝化脱窒処理する生物学的窒素除去
装置において、脱窒槽内には微生物固定化担体を囲い込
む通水性を有したケーシングを槽底部から離間した位置
に浸漬して設け、脱窒槽の槽底部に攪拌流を生起させる
水中攪拌装置を設け、一方硝化槽内には槽底部に散気装
置を設けた構成としたものである。In order to solve the above-mentioned problems, the biological nitrogen removing apparatus of the present invention comprises a denitrification tank in which a microorganism-immobilized carrier is present and a nitrification tank, and nitrogen compounds in the water to be treated. In a biological nitrogen removal device for nitrifying and denitrifying a nitrogen-containing denitrification tank, a water-permeable casing that encloses the microorganism-immobilized carrier is immersed in the denitrification tank at a position separated from the tank bottom. An underwater agitator for generating an agitated flow is provided in the meantime, while an air diffuser is provided at the bottom of the nitrification tank.
【０００６】本発明の生物学的窒素除去装置は、被処理
水中の窒素化合物を硝化脱窒処理する生物学的窒素除去
装置において、反応槽内に浸漬配置するフレームに反応
槽内を脱窒領域と硝化領域とに分割形成する仕切壁を設
け、脱窒領域のフレームに、内部に微生物固定化担体を
投入した通水性を有するケーシングを槽底部から離間す
る位置に設けるとともに、脱窒領域に攪拌流を生起させ
る水中攪拌装置を前記ケーシングの下方に位置して設
け、硝化領域のフレームに、内部に微生物固定化担体を
投入した通水性を有するケーシングを槽底部から離間す
る位置に設けるとともに、硝化領域に空気を送り込む散
気装置を前記ケーシングの下方に位置して設けた構成と
したものである。The biological nitrogen removing apparatus of the present invention is a biological nitrogen removing apparatus for nitrifying and denitrifying a nitrogen compound in water to be treated. A partition wall that is divided into a nitrification area and a nitrification area is provided.In the denitrification area, a water-permeable casing containing a microorganism-immobilized carrier is placed inside the denitrification area, at a position away from the bottom of the tank, and agitated in the denitrification area. A submerged agitator for generating a flow is provided below the casing, and a frame having a nitrification region is provided with a water-permeable casing having a microorganism-immobilized carrier inside, at a position separated from the bottom of the tank, and nitrification is performed. An air diffuser for sending air to the area is provided below the casing.
【０００７】また、硝化領域に攪拌流を生起させる水中
攪拌装置をケーシングの下方に位置して設けた構成とし
たものである。Further, an underwater stirring device for generating a stirring flow in the nitrification region is provided below the casing.
【０００８】[0008]
【作用】上記した第１の構成により、脱窒槽に投入した
微生物固定化担体によって脱窒菌を高濃度に担持し、硝
化槽に投入した微生物固定化担体によって硝化菌を高濃
度に担持する状態において、脱窒槽および硝化槽を通る
被処理水中の窒素化合物を脱窒処理する。With the above-described first configuration, in a state where the denitrifying bacteria are loaded in a high concentration by the microorganism-immobilized carrier loaded in the denitrification tank, and the nitrifying bacteria are loaded in a high concentration by the microorganism-immobilized carrier loaded in the nitrification tank. Denitrifying nitrogen compounds in the water to be treated that has passed through the denitrification tank and the nitrification tank.
【０００９】このとき、脱窒槽においては水中攪拌装置
によって生起する攪拌流により被処理水が上下に対流
し、微生物固定化担体と被処理水を攪拌混合するので、
脱窒菌の脱窒速度が向上する。さらに、微生物固定化担
体はケーシングで囲まれているので水中攪拌装置より常
に上方に位置し、直接に水中攪拌装置と接触して破損す
ることがない。したがって、硝化速度ないし脱窒速度の
高まりによって、滞留時間を短く設定した既設の反応槽
等においても硝化、脱窒を十分行なうことができる。At this time, in the denitrification tank, the water to be treated convects vertically due to the stirring flow generated by the underwater stirring device, and the microorganism-immobilized carrier and the water to be treated are stirred and mixed.
The denitrification speed of denitrifying bacteria is improved. Further, since the microorganism-immobilized carrier is surrounded by the casing, it is always positioned above the underwater agitator and is not directly contacted with the underwater agitator and damaged. Therefore, by increasing the nitrification rate or denitrification rate, nitrification and denitrification can be sufficiently performed even in an existing reaction tank or the like in which the residence time is set to be short.
【００１０】また、硝化槽においては散気装置から噴き
出す空気によって酸素を供給するとともに、エアリフト
作用によって生じる上昇攪拌流により被処理水が上下に
対流し、微生物固定化担体と被処理水を攪拌混合するの
で、硝化菌の脱窒速度が向上する。Further, in the nitrification tank, oxygen is supplied by the air blown from the air diffuser, and the water to be treated is convected up and down by the ascending stirring flow generated by the air lift action, whereby the microorganism-immobilized carrier and the water to be treated are stirred and mixed. Therefore, the denitrification rate of nitrifying bacteria is improved.
【００１１】上記した第２の構成によれば、微生物固定
化担体を内包するケーシングおよび水中攪拌装置等の窒
素除去に必要な機器をフレームに設けてユニット化して
いるので、フレームによって一体化した装置を反応槽内
に浸漬配置するだけで、既存の反応槽内に脱窒領域と硝
化領域を備えた生物学的窒素除去装置を容易に構成する
ことができる。According to the above-mentioned second structure, the casing containing the microorganism-immobilized carrier and the equipment necessary for nitrogen removal such as the underwater agitation device are provided in the frame as a unit, so that the device integrated by the frame is used. The biological nitrogen removing apparatus having the denitrification region and the nitrification region in the existing reaction tank can be easily configured by simply immersing the above in the reaction tank.
【００１２】そして、脱窒槽においては水中攪拌装置に
よって生起する攪拌流により被処理水が上下に対流し、
微生物固定化担体と被処理水を攪拌混合するので、脱窒
菌の脱窒速度が向上する。さらに、硝化領域においては
微生物固定化担体によって硝化菌を高濃度に担持すると
ともに、散気装置から噴き出す空気による攪拌によって
生起する攪拌流により被処理水が上下に対流し、微生物
固定化担体と被処理水を攪拌混合するので、硝化菌の脱
窒速度が向上する。したがって、硝化速度ないし脱窒速
度の高まりによって、滞留時間を短く設定した既設の反
応槽等においても硝化、脱窒を十分行なうことができ
る。In the denitrification tank, the water to be treated convects vertically due to the stirring flow generated by the underwater stirring device.
Since the microorganism-immobilized carrier and the water to be treated are mixed by stirring, the denitrification rate of denitrifying bacteria is improved. Further, in the nitrification area, the microbial immobilization carrier supports nitrifying bacteria at a high concentration, and the agitated flow generated by the agitation by the air blown from the air diffuser causes the treated water to convect up and down, and the microbial immobilization carrier and Since the treated water is mixed by stirring, the denitrification rate of nitrifying bacteria is improved. Therefore, by increasing the nitrification rate or denitrification rate, nitrification and denitrification can be sufficiently performed even in an existing reaction tank or the like in which the residence time is set to be short.
【００１３】さらに、硝化領域に水中攪拌装置を設ける
ことにより、さらに被処理水が上下に対流して微生物固
定化担体と被処理水を攪拌混合するので、硝化菌の脱窒
速度が向上する。Further, by providing an underwater agitator in the nitrification region, the water to be treated is further convected vertically to stir and mix the microorganism-immobilized carrier and the water to be treated, so that the denitrification rate of nitrifying bacteria is improved.
【００１４】また、脱窒領域および硝化領域の微生物固
定化担体はケーシングで囲まれて水中攪拌装置より常に
上方に位置し、直接に水中攪拌装置と接触して破損する
ことがない。さらに、窒素除去に必要な装置類をユニッ
ト化することによって、既存の下廃水処理設備に対して
容易に据付、撤去ができる。しかも、簡単に装置類の取
り付け、取り外しができることから修理や補修が容易で
ある。The microorganism-immobilized carrier in the denitrification area and the nitrification area is surrounded by the casing and is always located above the underwater agitator so that it is not directly contacted with the underwater agitator and damaged. Furthermore, by unitizing the equipment necessary for nitrogen removal, it can be easily installed and removed from existing wastewater treatment facilities. Moreover, since the devices can be easily attached and detached, the repair and repair are easy.
【００１５】[0015]
【実施例】以下、本発明の一実施例を図面に基づいて説
明する。図１において、脱窒槽１と硝化槽２は仕切壁３
を介して隣接しており、脱窒槽１の混合液４が仕切壁３
の上端縁を越えて越流するように構成している。また、
脱窒槽１には原水供給管５と硝化液循環管６が開口して
おり、硝化液循環管６は基端側が硝化槽２に開口すると
ともに、途中に循環ポンプ７を介装している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, the denitrification tank 1 and the nitrification tank 2 are separated by a partition wall 3.
Adjacent to each other, and the mixed solution 4 in the denitrification tank 1 is separated by the partition wall 3
It is configured to overflow beyond the upper edge of the. Also,
A raw water supply pipe 5 and a nitrification liquid circulation pipe 6 are opened in the denitrification tank 1, and the nitrification liquid circulation pipe 6 has a proximal end side opening to the nitrification tank 2 and a circulation pump 7 interposed therebetween.
【００１６】そして、脱窒槽１および硝化槽２の内部に
は槽底部から適当距離をおいてケーシング８，９を浸漬
配置しており、各ケーシング８，９の内部には微生物固
定化担体１０，１１を投入している。このケーシング
８，９は金網等の通水性を有する部材で形成しており、
各槽８，９の平面方向の全面にわたる大きさに形成して
もよく、平面方向の中央部に対応する大きさに形成して
もよい。後者の場合には、ケーシング８，９の上下面の
みを金網で形成し、側面を板材で形成することにより、
混合液４の流通性を向上することができる。Then, inside the denitrification tank 1 and the nitrification tank 2, casings 8 and 9 are arranged so as to be immersed at an appropriate distance from the bottoms of the tanks. 11 is thrown in. The casings 8 and 9 are made of a water-permeable material such as a wire mesh,
The tanks 8 and 9 may be formed over the entire surface in the plane direction, or may be formed in a size corresponding to the central portion in the plane direction. In the latter case, by forming only the upper and lower surfaces of the casings 8 and 9 with wire mesh and forming the side surfaces with a plate material,
The flowability of the mixed liquid 4 can be improved.
【００１７】そして、脱窒槽１および硝化槽２の各ケー
シング８，９の下方に位置して水中攪拌装置をなす水中
攪拌機１２，１３を槽底部に配置しており、各水中攪拌
機１２，１３は回転翼１４，１５を有している。また、
硝化槽２の槽底部には散気装置１６を配置しており、散
気装置１６は空気供給管１７を介してブロア１８に連通
している。Further, underwater stirrers 12 and 13 which are located below the casings 8 and 9 of the denitrification tank 1 and the nitrification tank 2 and serve as an underwater stirrer are arranged at the bottom of the tanks. It has rotary blades 14 and 15. Also,
An air diffuser 16 is arranged at the bottom of the nitrification tank 2, and the air diffuser 16 communicates with a blower 18 via an air supply pipe 17.
【００１８】尚、硝化槽２において水中攪拌機１３を設
けずに、散気装置１６のみを設ける場合には、ケーシン
グ９は不要である。以下、上記構成における作用を説明
する。脱窒槽１および硝化槽２においては、微生物固定
化担体１０，１１がそれぞれ脱窒菌および硝化菌を高濃
度に担持する。When only the air diffuser 16 is provided in the nitrification tank 2 without the submersible agitator 13, the casing 9 is unnecessary. The operation of the above configuration will be described below. In the denitrification tank 1 and the nitrification tank 2, the microorganism-immobilized carriers 10 and 11 carry denitrification bacteria and nitrification bacteria at high concentrations, respectively.
【００１９】そして、脱窒槽１においては、原水供給管
５から原水が流入するとともに、硝化液循環管６から硝
化循環液が循環する状態で、微生物固定化担体１０によ
って担持する脱窒菌の硝酸呼吸ないし亜硝酸呼吸により
脱窒槽１の混合液４に含まれた窒素化合物である亜硝酸
性窒素ないし硝酸性窒素を不活性な窒素ガスに分解して
除去する。In the denitrification tank 1, raw water flows in from the raw water supply pipe 5 and the nitrification circulation liquid circulates from the nitrification liquid circulation pipe 6, and nitric acid respiration of the denitrification bacteria carried by the microorganism immobilization carrier 10 is carried out. Or, by nitrite respiration, nitrite nitrogen or nitrate nitrogen which is a nitrogen compound contained in the mixed liquid 4 of the denitrification tank 1 is decomposed and removed into an inert nitrogen gas.
【００２０】このとき、脱窒槽１の水中攪拌機１２によ
って生起する攪拌流により混合液４が上下に対流し、ケ
ーシング８の内部において微生物固定化担体１０と混合
液４を攪拌混合するので、脱窒菌の脱窒速度が向上す
る。さらに、微生物固定化担体１０はケーシング８で囲
まれて水中攪拌機１２より常に上方に位置し、直接に水
中攪拌機１２の回転翼１４と接触して破損することがな
い。また、脱窒槽１の混合液４は仕切壁３の上端縁を越
えて硝化槽２に越流する。At this time, the mixed liquid 4 is vertically convected by the stirring flow generated by the submerged stirrer 12 in the denitrification tank 1, and the microorganism-immobilized carrier 10 and the mixed liquid 4 are stirred and mixed inside the casing 8. Improves denitrification speed. Further, the microorganism-immobilized carrier 10 is surrounded by the casing 8 and is always positioned above the submersible agitator 12 and is not directly contacted with the rotary blades 14 of the submerged agitator 12 to be damaged. Further, the mixed liquid 4 in the denitrification tank 1 flows over the nitrification tank 2 over the upper edge of the partition wall 3.
【００２１】そして、硝化槽２においては、散気装置１
６から噴き出す空気によって酸素を供給する状態におい
て、微生物固定化担体１１によって担持する硝化菌の生
物酸化反応により、窒素化合物であるアンモニア性窒素
または有機性窒素の一部を亜硝酸性窒素ないし硝酸性窒
素に分解するとともに、亜硝酸性窒素および硝酸性窒素
を含む混合液の一部を硝化循環液として脱窒槽１に循環
ポンプ７で返送する。Then, in the nitrification tank 2, the air diffuser 1
In a state where oxygen is supplied by the air blown out from 6, the nitric acid-carrying nitric acid-carrying bio-oxidation reaction of the nitrifying bacteria causes a part of the nitrogen compound, ammoniacal nitrogen or organic nitrogen, to be nitrite nitrogen or nitrate. While being decomposed into nitrogen, a part of the mixed liquid containing nitrite nitrogen and nitrate nitrogen is returned to the denitrification tank 1 as a nitrification circulation liquid by the circulation pump 7.
【００２２】このとき、エアリフト作用および水中攪拌
機１３によって生じる上昇攪拌流で混合液が上下に対流
し、ケーシング９の内部で微生物固定化担体１１と混合
液を攪拌混合するので硝化菌の脱窒速度が向上する。さ
らに、微生物固定化担体１１はケーシング９で囲まれて
水中攪拌機１３より常に上方に位置し、直接に水中攪拌
機１３の回転翼１５と接触して破損することがない。ま
た、硝化槽２から流出する処理水は次系の沈殿池等に導
く。At this time, the mixed liquid is vertically convected by the air-lifting action and the rising stirring flow generated by the submersible stirrer 13, and the mixed liquid is stirred and mixed inside the casing 9, so that the denitrification rate of nitrifying bacteria is increased. Is improved. Further, the microorganism-immobilized carrier 11 is surrounded by the casing 9 and is always positioned above the submersible agitator 13 and is not directly contacted with the rotary blades 15 of the submerged agitator 13 to be damaged. Further, the treated water flowing out from the nitrification tank 2 is led to the next settling tank or the like.
【００２３】したがって、硝化速度ないし脱窒速度の高
まりによって、滞留時間を短く設定した既設の反応槽等
においても硝化、脱窒を十分行なうことができる。図２
に示すように、水中攪拌装置はケーシング８の下方にお
いて複数の開口を有する脱窒槽混合液循環管２１と脱窒
槽混合液循環ポンプ２２とで構成してもよい。この構成
によれば、脱窒槽混合液循環ポンプ２２の駆動によって
脱窒槽１の上部の混合液４が脱窒槽混合液循環管２１を
通り槽底部から上向流で噴出し、脱窒槽１の内部で混合
液４が対流する。Therefore, by increasing the nitrification rate or denitrification rate, sufficient nitrification and denitrification can be performed even in an existing reaction tank or the like in which the residence time is set to be short. Figure 2
As shown in, the underwater agitator may be composed of a denitrification tank mixed solution circulation pipe 21 and a denitrification tank mixed solution circulation pump 22 having a plurality of openings below the casing 8. According to this configuration, by driving the denitrification tank mixed solution circulation pump 22, the mixed solution 4 in the upper part of the denitrification tank 1 passes through the denitrification tank mixed solution circulation pipe 21 and is jetted in an upward flow from the bottom of the tank, whereby the inside of the denitrification tank 1 is discharged. The mixed solution 4 convects.
【００２４】このとき、微生物固定化担体１０はケーシ
ング８の内部において流動するので、脱窒槽混合液循環
ポンプ２２に吸い込まれて破損することがない。他の作
用効果は先の実施例と同様である。At this time, since the microorganism-immobilized carrier 10 flows inside the casing 8, the microorganism-immobilized carrier 10 is not sucked into the denitrification tank mixed liquid circulation pump 22 and damaged. Other functions and effects are similar to those of the previous embodiment.
【００２５】図３は本発明の他の実施例を示すものであ
り、先の実施例と同様の作用を行う部材については同一
番号を付して説明を省略する。図３において、反応槽３
１の内部にはフレーム３２を浸漬しており、フレーム３
２には反応槽３１の内部を脱窒領域３３と硝化領域３４
に仕切る仕切壁３５を一体に設けている。FIG. 3 shows another embodiment of the present invention. Members having the same functions as those of the previous embodiment are designated by the same reference numerals and the description thereof will be omitted. In FIG. 3, the reaction tank 3
The frame 32 is immersed in the inside of the frame 1.
2, the inside of the reaction tank 31 is a denitrification area 33 and a nitrification area 34.
A partition wall 35 for partitioning is provided integrally.
【００２６】また、フレーム３２の脱窒領域３３に対応
する部位にはケーシング８および水中攪拌機１２を、フ
レーム３２の硝化領域３４に対応する部位にはケーシン
グ９および水中攪拌機１３を設けている。さらに、フレ
ーム３２の硝化領域３４に対応する部位には散気装置１
６を設けており、フレーム３２の上部位には循環ポンプ
７およびブロア１８を設けている。Further, the casing 8 and the underwater stirrer 12 are provided in a portion of the frame 32 corresponding to the denitrification region 33, and the casing 9 and the underwater stirrer 13 are provided in a portion of the frame 32 corresponding to the nitrification region 34. Further, the diffusing device 1 is provided at a portion of the frame 32 corresponding to the nitrification region 34.
6 is provided, and a circulation pump 7 and a blower 18 are provided at the upper portion of the frame 32.
【００２７】この構成によれば、微生物固定化担体１
０，１１を内包するケーシング８，９および水中攪拌機
１２，１３等の窒素除去に必要な機器をフレーム３２に
設けてユニット化しているので、フレーム３２によって
一体化した装置を反応槽３１に浸漬配置するだけで、既
存の反応槽３１に脱窒領域３３と硝化領域３４を備えた
生物学的窒素除去装置を容易に構成することができる。
他の作用効果は先の実施例と同様である。According to this configuration, the microorganism-immobilized carrier 1
The casings 8 and 9 containing 0 and 11 and the devices necessary for nitrogen removal such as the submersible stirrers 12 and 13 are provided in the frame 32 as a unit, so that the device integrated by the frame 32 is immersed in the reaction tank 31. The biological nitrogen removing apparatus having the denitrification region 33 and the nitrification region 34 in the existing reaction tank 31 can be easily configured only by doing so.
Other functions and effects are similar to those of the previous embodiment.
【００２８】また、反応槽３１が長い場合には複数の仕
切壁３５によって複数の脱窒領域３３および硝化領域３
４を形成することもできる。さらに、窒素除去に必要な
装置類をユニット化することによって、既存の下廃水処
理設備に対して容易に据付、撤去ができ、簡単に装置類
の取り付け、取り外しができることから修理や補修が容
易である。When the reaction tank 31 is long, a plurality of partition walls 35 are used to provide a plurality of denitrification regions 33 and nitrification regions 3.
4 can also be formed. Furthermore, by unitizing the equipment required for nitrogen removal, it can be easily installed and removed from existing wastewater treatment facilities, and the equipment can be easily attached and removed, making repair and repair easy. is there.
【００２９】[0029]
【発明の効果】以上述べたように本発明によれば、水中
攪拌装置によって生起する攪拌流により混合液を上下に
対流させ、微生物を高濃度に担持する微生物固定化担体
と混合液を攪拌混合させて脱窒菌の脱窒速度の向上を図
ることができる。しかも、槽内に投入する微生物固定化
担体をケーシングで囲んで浸漬することにより、微生物
固定化担体が水中攪拌装置に触れて損傷することを防止
できる。As described above, according to the present invention, the mixed solution is vertically convected by the stirring flow generated by the submersible stirring device, and the mixed solution and the microorganism-immobilized carrier carrying a high concentration of microorganisms are stirred and mixed. Thus, the denitrification rate of denitrifying bacteria can be improved. Moreover, by enclosing the microorganism-immobilized carrier to be put in the tank in a casing and immersing the microorganism-immobilized carrier in the tank, it is possible to prevent the microorganism-immobilized carrier from being touched and damaged by the underwater agitator.
【００３０】また、微生物固定化担体を内包するケーシ
ングおよび水中攪拌装置等の窒素除去に必要な機器をフ
レームに設けてユニット化しているので、フレームによ
って一体化した装置を反応槽内に浸漬配置するだけで、
既存の反応槽内に脱窒領域と硝化領域を備えた生物学的
窒素除去装置を容易に構成することができ、簡単に装置
類の取り付け、取り外しができることから修理や補修が
容易である。Further, since a casing containing a microorganism-immobilized carrier and a device necessary for nitrogen removal such as an underwater stirring device are provided in a frame to form a unit, the device integrated by the frame is arranged by immersion in the reaction tank. Alone
A biological nitrogen removal device having a denitrification region and a nitrification region in an existing reaction tank can be easily constructed, and the devices can be easily attached and detached, which facilitates repair and repair.
【図１】本発明の一実施例を示す生物学的脱窒除去装置
の全体構成図である。FIG. 1 is an overall configuration diagram of a biological denitrification removal apparatus showing an embodiment of the present invention.
【図２】本発明の他の実施例を示す生物学的脱窒除去装
置の全体構成図である。FIG. 2 is an overall configuration diagram of a biological denitrification removal device showing another embodiment of the present invention.
【図３】本発明のさらに他の実施例を示す生物学的脱窒
除去装置の全体構成図である。FIG. 3 is an overall configuration diagram of a biological denitrification removing apparatus showing still another embodiment of the present invention.
１ 脱窒槽 ２ 硝化槽 ３ 仕切壁 ４ 混合液 ８，９ ケーシング １０，１１ 微生物固定化担体 １２，１３ 水中攪拌機 １６ 散気装置 ３２ フレーム 1 Denitrification tank 2 Nitrification tank 3 Partition wall 4 Mixed liquid 8,9 Casing 10,11 Microorganism immobilization carrier 12,13 Submersible stirrer 16 Air diffuser 32 frame
───────────────────────────────────────────────────── フロントページの続き (72)発明者 木下 昌大 大阪府大阪市浪速区敷津東１丁目２番47号 株式会社クボタ内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masahiro Kinoshita 1-247 Shikitsu Higashi, Naniwa-ku, Osaka City, Osaka Prefecture Kubota Corporation
Claims (3)
槽および硝化槽を通して被処理水中の窒素化合物を硝化
脱窒処理する生物学的窒素除去装置において、脱窒槽内
には微生物固定化担体を囲い込む通水性を有したケーシ
ングを槽底部から離間した位置に浸漬して設け、脱窒槽
の槽底部に攪拌流を生起させる水中攪拌装置を設け、一
方硝化槽内には槽底部に散気装置を設けたことを特徴と
する生物学的窒素除去装置。1. A biological nitrogen removing apparatus for nitrifying and denitrifying a nitrogen compound in water to be treated through a denitrification tank having a microorganism immobilization carrier in the tank and a nitrification tank, wherein the microorganism immobilization carrier is in the denitrification tank. A water-permeable casing that encloses the water is installed by immersing it in a position away from the bottom of the tank, and an underwater agitator that creates a stirring flow is installed at the bottom of the denitrification tank, while the nitrification tank is diffused at the bottom of the tank. A biological nitrogen removing device, which is provided with a device.
する生物学的窒素除去装置において、反応槽内に浸漬配
置するフレームに反応槽内を脱窒領域と硝化領域とに分
割形成する仕切壁を設け、脱窒領域のフレームに、内部
に微生物固定化担体を投入した通水性を有するケーシン
グを槽底部から離間する位置に設けるとともに、脱窒領
域に攪拌流を生起させる水中攪拌装置を前記ケーシング
の下方に位置して設け、硝化領域のフレームに、内部に
微生物固定化担体を投入した通水性を有するケーシング
を槽底部から離間する位置に設けるとともに、硝化領域
に空気を送り込む散気装置を前記ケーシングの下方に位
置して設けたことを特徴とする生物学的窒素除去装置。2. In a biological nitrogen removing apparatus for nitrifying and denitrifying nitrogen compounds in water to be treated, a partition for forming a denitrification region and a nitrification region in the reaction tank is divided into a frame immersed in the reaction tank. The wall is provided, the frame of the denitrification region is provided with a water-permeable casing in which a microorganism-immobilized carrier is put inside, at a position away from the bottom of the tank, and the underwater agitator that causes a stirring flow in the denitrification region is described above. Provided below the casing, the frame of the nitrification region is provided with a water-permeable casing in which the microorganism-immobilized carrier is put inside, at a position away from the bottom of the tank, and an air diffuser for sending air to the nitrification region. A biological nitrogen removing apparatus, which is provided below the casing.
装置をケーシングの下方に位置して設けたことを特徴と
する請求項２記載の生物学的窒素除去装置。3. The biological nitrogen removing apparatus according to claim 2, wherein an underwater agitator for generating an agitated flow in the nitrification region is provided below the casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4008009A JPH05192689A (en) | 1992-01-21 | 1992-01-21 | Biological nitrogen removing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4008009A JPH05192689A (en) | 1992-01-21 | 1992-01-21 | Biological nitrogen removing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05192689A true JPH05192689A (en) | 1993-08-03 |
Family
ID=11681359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4008009A Pending JPH05192689A (en) | 1992-01-21 | 1992-01-21 | Biological nitrogen removing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05192689A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100399295B1 (en) * | 2001-07-23 | 2003-09-26 | 삼성에버랜드 주식회사 | Reactor installed in baffle |
| JP2014046217A (en) * | 2012-08-29 | 2014-03-17 | Toshiba Corp | Organic waste water treatment unit, and organic waste water treatment system using the same |
| JP6854381B1 (en) * | 2020-12-21 | 2021-04-07 | 三菱重工環境・化学エンジニアリング株式会社 | Denitrification tank repair method for human waste treatment facility |
-
1992
- 1992-01-21 JP JP4008009A patent/JPH05192689A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100399295B1 (en) * | 2001-07-23 | 2003-09-26 | 삼성에버랜드 주식회사 | Reactor installed in baffle |
| JP2014046217A (en) * | 2012-08-29 | 2014-03-17 | Toshiba Corp | Organic waste water treatment unit, and organic waste water treatment system using the same |
| JP6854381B1 (en) * | 2020-12-21 | 2021-04-07 | 三菱重工環境・化学エンジニアリング株式会社 | Denitrification tank repair method for human waste treatment facility |
| JP2022097821A (en) * | 2020-12-21 | 2022-07-01 | 三菱重工環境・化学エンジニアリング株式会社 | Denitrification tank repairing method in excreta treatment facility |
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