JPH0736281Y2 - Respiratory rate measuring device - Google Patents
Respiratory rate measuring deviceInfo
- Publication number
- JPH0736281Y2 JPH0736281Y2 JP1988142562U JP14256288U JPH0736281Y2 JP H0736281 Y2 JPH0736281 Y2 JP H0736281Y2 JP 1988142562 U JP1988142562 U JP 1988142562U JP 14256288 U JP14256288 U JP 14256288U JP H0736281 Y2 JPH0736281 Y2 JP H0736281Y2
- Authority
- JP
- Japan
- Prior art keywords
- tank
- measuring
- activated sludge
- liquid
- introducing
- 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 - Fee Related
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)
Description
【考案の詳細な説明】 A.産業上の利用分野 本考案は、活性汚泥プロセス制御に用いられる呼吸速度
測定装置に係り、特に測定後の測定槽内を洗浄する必要
があるか否かを判断してから洗浄工程を実施するように
した呼吸速度測定装置に関するものである。[Detailed description of the device] A. Industrial field of application The present invention relates to a respiration rate measuring device used for controlling activated sludge process, and particularly determines whether or not the inside of a measuring tank needs to be cleaned after measurement. The present invention relates to a respiratory rate measuring device which is adapted to carry out a cleaning step.
B.考案の概要 本考案は、活性汚泥液を測定槽内に導入して、エアによ
る曝気操作と溶存酸素濃度の測定操作によって活性汚泥
の呼吸速度を測定する装置において、上記測定槽に、呼
吸速度の測定後に槽内を希釈液により置換するための希
釈液導入管と、該希釈液によって希釈されたチェック用
検水中の活性汚泥の呼吸速度を測定するためのチェック
用検水導入管と、該チェック用検水による活性汚泥の呼
吸速度を基準として測定槽内の洗浄を行うか否かを判断
してから洗浄液を測定槽内に導入する洗浄液導入管を配
備したことにより、不要な洗浄工程を見分けて洗浄に必
要とする薬品の注入率を格段に少なくし、且つこの薬品
による活性汚泥プロセスへの影響を抑えるようにしてい
る。B. Outline of the Invention The present invention is an apparatus for measuring the respiration rate of activated sludge by introducing an activated sludge liquid into the measurement tank and aerating with air and measuring the dissolved oxygen concentration. A diluent introducing pipe for replacing the inside of the tank with a diluent after measuring the velocity, and a check water introducing pipe for measuring the respiration rate of the activated sludge in the check water diluted with the diluent, Unnecessary cleaning process by arranging a cleaning liquid introducing pipe for introducing the cleaning liquid into the measuring tank after determining whether or not to clean the measuring tank based on the respiration rate of the activated sludge by the test water for checking By distinguishing between them, the injection rate of chemicals required for cleaning is significantly reduced, and the influence of this chemical on the activated sludge process is suppressed.
C.従来の技術 有機性廃水を処理する方法として活性汚泥を利用する方
法がある。この方法は廃水を曝気槽に流入させ、ここで
活性汚泥と混合すると共に空気を供給して廃水を処理
し、その混合液を最終沈澱池に導いて固液分離し、その
上澄水として放流する方法である。C. Conventional technology As a method of treating organic wastewater, there is a method of using activated sludge. In this method, wastewater is allowed to flow into an aeration tank, where it is mixed with activated sludge and air is supplied to treat the wastewater, and the mixed solution is led to a final settling tank for solid-liquid separation, and then discharged as supernatant water. Is the way.
こうした活性汚泥プロセスにおける活性汚泥の活性度の
評価として活性汚泥の呼吸速度(以下これを「rr」とい
う。)が用いられている。従来rrを自動的に測定するた
めには、第2図に示す装置を用いて次のようにして行わ
れていた。第2図中11,12は夫々サンプル導入口及びサ
ンプル排出口、2は測定槽であり、測定槽2の入口及び
出口側には通水路を形成するチューブ3が連結されてい
る。V1,V2はピンチバルブであり、エア注入口41,42より
のエアの注入、排気によりチューブ3がピンチ状態、解
除状態になり、これにより開閉動作が行われる。5は溶
存酸素(以下「DO」という。)濃度検出部としてのDO電
極、6は攪拌機、7はエア注入口である。The respiration rate of activated sludge (hereinafter referred to as "r r ") is used to evaluate the activity of activated sludge in such activated sludge process. Conventionally, the automatic measurement of r r has been performed as follows using the device shown in FIG. In FIG. 2, 1 1 and 1 2 are sample inlets and sample outlets, 2 is a measuring tank, and a tube 3 forming a water passage is connected to the inlet and outlet sides of the measuring tank 2. V 1 and V 2 are pinch valves, and the tube 3 is brought into a pinch state and a released state by injecting and exhausting air from the air injecting ports 4 1 and 4 2 , whereby the opening / closing operation is performed. Reference numeral 5 is a DO electrode as a dissolved oxygen (hereinafter referred to as “DO”) concentration detection unit, 6 is a stirrer, and 7 is an air inlet.
先ずエア注入口7よりエアを導入してエアリフトを形成
し、曝気槽内の活性汚泥液を測定槽2内に導入する。こ
のときピンチバルブV1,V2を開いている。次にピンチバ
ルブV1を閉じて測定槽2内を曝気し、DO濃度をある一定
値例えば5mg/lまで高める。DO濃度が設定値まで上昇し
た時点で曝気を停止し、ピンチバルブV2を閉じて攪拌を
開始する。活性汚泥(好気性微生物)による酸素消費に
伴い、DO濃度が低下し、その減少速度からrrを算出す
る。First, air is introduced from the air inlet 7 to form an air lift, and the activated sludge liquid in the aeration tank is introduced into the measuring tank 2. At this time, the pinch valves V 1 and V 2 are opened. Next, the pinch valve V 1 is closed to aerate the inside of the measuring tank 2 to increase the DO concentration to a certain constant value, for example, 5 mg / l. When the DO concentration rises to the set value, the aeration is stopped, the pinch valve V 2 is closed, and stirring is started. The DO concentration decreases as oxygen is consumed by activated sludge (aerobic microorganisms), and r r is calculated from the rate of decrease.
D.考案が解決しようとする課題 上記の装置では、測定槽2内の検出機例えばDO電極5や
攪拌機6等の付属機器あるいは測定槽2自体に汚泥が付
着して増殖し、測定誤差の原因となる場合がある。例え
ば見掛け上検水の汚泥濃度が上昇したことになり、この
結果rr値が実際の検水のrr値よりも高目となって、rrの
測定精度が低下する。D. Problem to be Solved by the Invention In the above-mentioned device, sludge adheres to the detectors in the measurement tank 2 such as the DO electrode 5 and the agitator 6 or the auxiliary equipment such as the agitator 6, and proliferates, causing the measurement error. May be For example, that the sludge concentration apparently test water was increased, a result r r value becomes the actual height eyes than r r value of test water, the measurement accuracy of r r decreases.
こうしたことを防止するために、次亜塩素酸ナトリウム
等の薬品により測定槽2内を洗浄して殺菌することが行
われている。しかしながら薬品の最適注入率は検水の活
性汚泥の濃度やアンモア性窒素濃度あるいはpH等により
変化するため、通常は過剰に注入する場合が多い。また
洗浄後の測定槽2内には活性汚泥液が含まれるため、こ
れを処理するために測定槽2内の液を曝気槽に戻してい
た。このため薬品の使用量が多くなること、その薬品が
曝気槽に排水されることから、プロセスへの薬品の影響
が問題となっていた。In order to prevent this, the inside of the measuring tank 2 is washed and sterilized with a chemical such as sodium hypochlorite. However, since the optimum injection rate of chemicals changes depending on the concentration of activated sludge in test water, the concentration of ammolytic nitrogen, pH, etc., it is often the case that injection is excessive. Further, since the activated sludge liquid is contained in the measuring tank 2 after washing, the liquid in the measuring tank 2 was returned to the aeration tank in order to process this. For this reason, the amount of chemicals used increases and the chemicals are drained to the aeration tank, so that the influence of chemicals on the process has been a problem.
本考案はこうした問題点を解決することを目的とする。The present invention aims to solve these problems.
E.課題を解決するための手段 本考案は、活性汚泥液を測定槽内に導入して、エアによ
る曝気操作と溶存酸素濃度の測定操作によって活性汚泥
の呼吸速度を測定する装置において、上記測定槽に、呼
吸速度の測定後に槽内を希釈液により置換するための希
釈液導入管と、該希釈液によって希釈されたチェック用
検水中の活性汚泥の呼吸速度を測定するためのチェック
用検水導入管と、該チェック用検水による活性汚泥の呼
吸速度を基準として測定槽内の洗浄を行うか否かを判断
してから洗浄液を測定槽内に導入する洗浄液導入管を配
備した構成としてある。E. Means for Solving the Problems The present invention is an apparatus for measuring the respiration rate of activated sludge by introducing an activated sludge liquid into a measuring tank and aerating with air and measuring dissolved oxygen concentration. In the tank, a diluting liquid introduction pipe for replacing the inside of the tank with a diluting liquid after the measurement of the respiration rate, and a check test water for measuring the respiration rate of the activated sludge in the check test water diluted by the diluting solution An introduction pipe and a cleaning liquid introduction pipe for introducing a cleaning liquid into the measurement tank after determining whether or not to wash the inside of the measurement tank with reference to the respiration rate of the activated sludge by the test water for checking are provided. .
F.作用 活性汚泥液の呼吸速度測定工程の後希釈液により測定槽
内を置換し、次いでチェック用検水を導入して、付着し
ている活性汚泥の呼吸速度を測定する。そしてこの測定
値にもとずいて洗浄工程が必要か否かの判断をし、必要
であれば洗浄工程を行い、不要であれば洗浄工程を行わ
ない。洗浄工程は、希釈液により測定槽内を置換し、そ
の後洗浄液を導入することにより行われる。なお、チェ
ック用検水を導入する工程を行わずに、呼吸速度測定工
程の後洗浄工程を行うようにしてもよい。F. Action After the step of measuring the respiration rate of the activated sludge liquid, the inside of the measuring tank is replaced with a diluting solution, and then a test water for checking is introduced to measure the respiration rate of the adhering activated sludge. Then, based on this measured value, it is determined whether or not the cleaning step is necessary, and if necessary, the cleaning step is performed, and if not, the cleaning step is not performed. The washing step is performed by replacing the inside of the measuring tank with a diluting solution and then introducing the washing solution. Note that the cleaning step may be performed after the respiratory rate measuring step without performing the step of introducing the check water for checking.
G.実施例 第1図は、本考案の実施例を示す図であり、第2図と同
符号のものは同一部分を示す。先ず基本的な構成を説明
すると、11はサンプル導入口、12はサンプル排出口、2
は測定槽であり、この測定槽2の入口及び出口側には通
水路を形成するチューブ3が連結されている。V1,V2は
ピンチバルブであり、エア注入口41,42よりのエアの注
入と排気によりチューブ3がピンチ状態、解除状態にな
り、これにより開閉動作が行われる。5は溶存酸素濃度
検出部としてのDO電極、6は攪拌機、7はエア注入口で
ある。G. Embodiment FIG. 1 is a view showing an embodiment of the present invention, in which the same symbols as in FIG. 2 indicate the same parts. First will be described a basic configuration, 1 1 the sample inlet, 1 2 Sample outlet 2
Is a measuring tank, and a tube 3 forming a water passage is connected to the inlet and outlet sides of the measuring tank 2. V 1 and V 2 are pinch valves, and the tube 3 is brought into a pinch state and a released state by injecting and exhausting air from the air injecting ports 4 1 and 4 2 , whereby the opening / closing operation is performed. Reference numeral 5 is a DO electrode as a dissolved oxygen concentration detector, 6 is a stirrer, and 7 is an air inlet.
本実施例では上記の構成に加えて、以下に記す機構を付
加した。即ち、8は測定槽2内に希釈液を導入するため
の希釈液導入管、V3はバルブ、9はチェック用検水例え
ば人工下水を測定槽2内に導入するためのチェック用検
水導入管、10は洗浄液を導入するための洗浄液導入管で
ある。In this embodiment, in addition to the above structure, the following mechanism is added. That is, 8 is a diluent introducing pipe for introducing the diluent into the measuring tank 2, V 3 is a valve, and 9 is checking water for checking, for example, checking water for introducing artificial sewage into the measuring tank 2. A pipe, 10 is a cleaning liquid introducing pipe for introducing a cleaning liquid.
以下に本実施例の作用を説明する。先ず基本的な動作と
して、エア注入口7からエアを導入してエアリフトを形
成しておき、ピンチバルブV1,V2を開いて曝気槽内の活
性汚泥液をサンプル導入口11から測定槽2内に導入す
る。The operation of this embodiment will be described below. First, as a basic operation, air is introduced from the air inlet 7 to form an air lift, and the pinch valves V 1 and V 2 are opened to move the activated sludge liquid in the aeration tank from the sample inlet 11 to the measuring tank. Install in 2
次にピンチバルブV1を閉じてからエア注入口7からエア
を送り込んで測定槽2内を曝気し、DO濃度をある一定値
まで高める。DO濃度が上昇した時点で曝気を停止し、ピ
ンチバルブV2を閉じて攪拌機6を駆動して攪拌を開始す
る。すると活性汚泥による酸素消費に伴ってDO濃度が低
下するので、その減少速度から呼吸速度rrを算出する。Next, after closing the pinch valve V 1 , air is sent from the air inlet 7 to aerate the inside of the measuring tank 2 to raise the DO concentration to a certain value. When the DO concentration rises, aeration is stopped, the pinch valve V 2 is closed, and the stirrer 6 is driven to start stirring. Then, the DO concentration decreases with the oxygen consumption by the activated sludge, and the respiration rate r r is calculated from the decrease rate.
このようにして曝気槽のサンプルについてrrを測定した
後、測定槽2内にて曝気槽よりの活性汚泥液についてrr
を測定した後ピンチバルブV2を開くと共にバルブV3を開
き、希釈液導入管8より測定槽内に希釈液としての水道
水(あるいは最終沈澱池の上澄水)を導入する。なお活
性汚泥液についてrrを測定しているときにはピンチバル
ブV1,V2は閉じられている。そして測定槽2内の活性汚
泥液がほぼ水道水で置換した時点でバルブV3を閉じる。After measuring the r r sample of the aeration tank in this manner, the activated sludge liquid from the aeration tank in the measuring vessel 2 r r
After measuring, the pinch valve V 2 is opened and the valve V 3 is opened, and tap water (or the supernatant water of the final settling tank) as a diluting liquid is introduced into the measuring tank through the diluting liquid introducing pipe 8. The pinch valves V 1 and V 2 are closed when measuring r r of the activated sludge liquid. Then, when the activated sludge liquid in the measuring tank 2 is almost replaced with tap water, the valve V 3 is closed.
次にチェック用検水導入管9を通じて人工下水を測定槽
2内に導入し、続いて測定槽2内のDO濃度がある一定値
以上になるまで曝気する。DO濃度が目標値に達したとき
に曝気を停止し、ピンチバルブV2を閉じると共に攪拌機
6による攪拌を開始する。測定槽2内に付着している活
性汚泥の酸素消費によりDO濃度が減少し、その減少曲線
からrr値を求める。このrr値は測定槽2内の活性汚泥量
と対応しているため、rr値が設定値以下の場合には、曝
気槽内の活性汚泥液についてのrrの測定に影響を及ぼさ
ないとして、洗浄工程を実施しない。Next, artificial sewage is introduced into the measurement tank 2 through the check water introduction pipe 9, and then aerated until the DO concentration in the measurement tank 2 becomes a certain value or more. When the DO concentration reaches the target value, the aeration is stopped, the pinch valve V 2 is closed, and the stirring by the stirrer 6 is started. The DO concentration decreases due to the oxygen consumption of the activated sludge adhering to the measuring tank 2, and the r r value is calculated from the decrease curve. Since this r r value corresponds to the amount of activated sludge in the measuring tank 2, if the r r value is less than the set value, it does not affect the measurement of r r for the activated sludge liquid in the aeration tank. As a result, the cleaning process is not performed.
前記rr値が設定値以上の場合には、活性汚泥液について
のrrの測定に影響を及ぼすとして、洗浄工程を実施す
る。この場合先ずピンチバルブV2とバルブV3とを開き、
水道水を導入して測定槽2内の人工下水を曝気槽に排出
し、水道水により置換する。次に次塩素酸ナトリウム等
を洗浄液を洗浄液導入管10を通じて測定槽2内に導入す
る。洗浄液を添加してからある一定時間経過後にピンチ
バルブV2を開き、次にバルブV3を開いて測定槽2内の洗
浄液がなくなるまで水道水を注入する。洗浄水の排水が
終了した時点でバルブV3を閉じて洗浄工程を終了する。
上記測定槽2内に希釈液を導入する目的は2つある。第
1に曝気槽から導入されたサンプル液を該測定槽2から
排出する機能であり、第2に導入するチェック用検水を
希釈する機能である。ここで使用する希釈液は栄養塩と
か有機物等のように微生物にとって基質となる物質濃度
が呼吸速度として無視できるレベルであれば問題がな
く、従って前記したように水道水とか最終沈澱池の上澄
液等が利用可能である。If the r r value is greater than or equal to the set value, the washing process is carried out because it affects the r r measurement of the activated sludge liquid. In this case, first open the pinch valve V 2 and the valve V 3 ,
By introducing tap water, the artificial sewage in the measurement tank 2 is discharged to the aeration tank and replaced with tap water. Next, a cleaning solution such as sodium hypochlorite is introduced into the measuring tank 2 through the cleaning solution introducing pipe 10. After a certain period of time has passed since the cleaning liquid was added, the pinch valve V 2 is opened, and then the valve V 3 is opened to inject tap water until the cleaning liquid in the measuring tank 2 is exhausted. When drainage of the washing water is completed, the valve V 3 is closed and the washing process is completed.
There are two purposes for introducing the diluent into the measuring tank 2. The first is the function of discharging the sample liquid introduced from the aeration tank from the measurement tank 2, and the second is the function of diluting the check test water introduced. The diluting solution used here has no problem as long as the concentration of a substance that is a substrate for microorganisms such as nutrient salts or organic matter is a level that can be ignored as a respiration rate. Is available.
そして希釈液に予め所定の濃度に調製した人工基質、例
えばアンモアとかグルコース等を注入することによって
微生物に対する標準栄養水が得られるので、この標準栄
養水を被検体として上記した方法によって呼吸速度rrを
測定し、その結果から測定槽2の洗浄が必要であるか否
かを判断する。即ち、測定槽2の内壁部分とかDO電極5
の表面に一定量以上の微生物が付着していると、この付
着微生物量に比例して呼吸速度が速くなり、この呼吸速
度が無視できないくらいに大きくなった時点で洗浄工程
を実施する。The artificial substrate prepared in advance a predetermined concentration in a diluent, for example, since standard nutrient solution is obtained for the microorganism by injecting Anmoa Toka such as glucose, respiration rate r r The standard nutrient solution by the method described above as the subject Is measured and whether the cleaning of the measuring tank 2 is necessary or not is determined from the result. That is, the inner wall of the measuring tank 2 or the DO electrode 5
If a certain amount or more of microorganisms adhere to the surface of the, the respiration rate increases in proportion to the amount of the attached microorganisms, and the cleaning process is performed when the respiration rate becomes so large that it cannot be ignored.
従って本実施例で用いた希釈液は、測定槽2内の洗浄工
程が必要であるか否かを判断することを主眼として用い
られていることが本願考案の特徴の1つとなっている。Therefore, one of the features of the present invention is that the diluting liquid used in this example is mainly used to determine whether or not the cleaning step in the measuring tank 2 is necessary.
こうした付着汚泥量の推定及び洗浄工程は、活性汚泥液
についてのrr測定終了毎に実施してもよいし、あるいは
rrの測定を継続して複数回行った後に実施してもよい。The estimation of the amount of adhered sludge and the cleaning process may be carried out every time r r measurement of the activated sludge liquid is completed, or
It may be performed after the measurement of r r is repeated several times.
また本考案では、人工下水を用いて付着汚泥量の推定を
行う工程を省略してもよい。In the present invention, the step of estimating the amount of attached sludge using artificial sewage may be omitted.
更に本考案では、測定槽2内の液を酸素混和槽等の処理
水槽に排出するための、バルブV4を備えた排出管11を設
けて、測定槽2内の洗浄液を処理水槽に排出するように
してもよい。Further, in the present invention, a discharge pipe 11 equipped with a valve V 4 for discharging the liquid in the measuring tank 2 to the treated water tank such as an oxygen mixing tank is provided, and the cleaning liquid in the measuring tank 2 is discharged to the treated water tank. You may do it.
H.考案の効果 以上説明した本願考案によれば、洗浄時において測定槽
内は水道水等の希釈液により満たされているため、従来
のように活性汚泥液が満たされた場合に比べて洗浄液
(薬品)の注入率が格段に少なくて済む。その理由は活
性汚泥液中に存在する活性汚泥やアンモニア性窒素によ
り消費される次亜塩素酸ナトリウム等の薬品使用量分が
なくなるためである。従って、活性汚泥プロセスへの薬
品の影響を抑えることができる。また水道水等の希釈液
で置換してあることから洗浄液を曝気槽に戻すことなく
塩素混和槽等の処理水槽に直接排水することができ、こ
の場合には上記の影響はなくなる。H. Effect of the Invention According to the present invention described above, since the measuring tank is filled with a diluting liquid such as tap water at the time of cleaning, the cleaning liquid is more difficult than the conventional case where the activated sludge liquid is filled. The injection rate of (chemicals) is remarkably low. The reason is that the amount of chemicals used such as sodium hypochlorite consumed by activated sludge and ammonia nitrogen existing in the activated sludge liquid is lost. Therefore, the influence of chemicals on the activated sludge process can be suppressed. Further, since the cleaning liquid is replaced with a diluting liquid such as tap water, the cleaning liquid can be directly drained to a treated water tank such as a chlorine mixing tank without returning to the aeration tank, and in this case, the above influence is eliminated.
特に水道水とか最終沈澱池の上澄液等の希釈液に人工基
質を加えたチェック用検水を用いてrrを測定しているた
め、測定槽内に付着した活性汚泥量を推定することがで
きる。従ってその結果にもとずいて洗浄工程を行うか否
か判断し、rr値が低い場合には洗浄工程を省略すれば、
洗浄回数が少なくなり、このため薬品使用量が抑えられ
て、活性汚泥プロセスへの影響が小さくなる。In particular, since r r is measured by using a check test water in which an artificial substrate is added to a diluent such as tap water or the supernatant of the final sedimentation basin, the amount of activated sludge adhering to the measurement tank can be estimated. . Therefore, based on the result, it is judged whether or not the cleaning step should be performed, and if the r r value is low, the cleaning step can be omitted.
The number of washings is reduced, which reduces the amount of chemicals used and reduces the impact on the activated sludge process.
第1図は本考案の実施例を示す縦断側面図、第2図は従
来例を示す縦断面側面図である。 11……検水導入口、12……検水排出口、2……測定槽、
5……溶存酸素電極、6……攪拌機、8……希釈液導入
管、9……チェック用検水導入管、10……洗浄液導入
管、V1,V2……ピンチバルブ、V3,V4……バルブ。FIG. 1 is a vertical sectional side view showing an embodiment of the present invention, and FIG. 2 is a vertical sectional side view showing a conventional example. 1 1 …… Inspection water inlet, 1 2 …… Water outlet, 2 …… Measuring tank,
5 ...... dissolved oxygen electrode, 6 ...... stirrer, 8 ...... diluent inlet tube, 9 ...... checking test water inlet pipe, 10 ...... washing liquid inlet pipe, V 1, V 2 ...... pinch valve, V 3, V 4 …… Valve.
Claims (1)
よる曝気操作と溶存酸素濃度の測定操作によって活性汚
泥の呼吸速度を測定する装置において、 上記測定槽に、呼吸速度の測定後に槽内を希釈液により
置換するための希釈液導入管と、該希釈液によって希釈
されたチェック用検水中の活性汚泥の呼吸速度を測定す
るめのチェック用検水導入管と、該チェック用検水によ
る活性汚泥の呼吸速度を基準として測定槽内の洗浄を行
うか否かを判断してから洗浄液を測定槽内に導入する洗
浄液導入管を配備したことを特徴とする呼吸速度測定装
置。1. An apparatus for measuring the respiration rate of activated sludge by introducing an activated sludge liquid into a measuring tank and performing an aeration operation by air and a dissolved oxygen concentration measuring operation. Diluting liquid introducing pipe for replacing the inside of the tank with diluting liquid, checking water introducing pipe for measuring the respiration rate of activated sludge in the checking water diluted with the diluting liquid, and the checking water for checking The respiratory rate measuring device is characterized in that a cleaning liquid introducing pipe for introducing the cleaning liquid into the measuring tank after deciding whether or not to wash the inside of the measuring tank is provided on the basis of the respiration rate of the activated sludge.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988142562U JPH0736281Y2 (en) | 1988-10-31 | 1988-10-31 | Respiratory rate measuring device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988142562U JPH0736281Y2 (en) | 1988-10-31 | 1988-10-31 | Respiratory rate measuring device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0263454U JPH0263454U (en) | 1990-05-11 |
JPH0736281Y2 true JPH0736281Y2 (en) | 1995-08-16 |
Family
ID=31408628
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1988142562U Expired - Fee Related JPH0736281Y2 (en) | 1988-10-31 | 1988-10-31 | Respiratory rate measuring device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0736281Y2 (en) |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61258157A (en) * | 1985-05-13 | 1986-11-15 | Toshiba Corp | Method for analizing concentration of ion |
-
1988
- 1988-10-31 JP JP1988142562U patent/JPH0736281Y2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH0263454U (en) | 1990-05-11 |
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