JP2003334582A - Air blow amount control method in activated sludge treatment, air blow amount control program and recording medium having program recorded thereon - Google Patents
Air blow amount control method in activated sludge treatment, air blow amount control program and recording medium having program recorded thereonInfo
- Publication number
- JP2003334582A JP2003334582A JP2002145633A JP2002145633A JP2003334582A JP 2003334582 A JP2003334582 A JP 2003334582A JP 2002145633 A JP2002145633 A JP 2002145633A JP 2002145633 A JP2002145633 A JP 2002145633A JP 2003334582 A JP2003334582 A JP 2003334582A
- Authority
- JP
- Japan
- Prior art keywords
- air flow
- treated water
- activated sludge
- aeration tank
- program
- 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.)
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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
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Activated Sludge Processes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、例えば、活性汚
泥処理を行う処理において、活性汚泥が必要とする送風
量をエネルギーとして評価する送風量制御方法及び送風
量制御プログラム並びにそのプログラムを記録した記録
媒体に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, an air flow rate control method and an air flow rate control program for evaluating the air flow rate required by the activated sludge as energy in a process for performing activated sludge treatment, and a recording recording the program. It concerns media.
【０００２】[0002]
【従来の技術】現在の活性汚泥処理において、流入した
下水など有機物を含む廃水を処理するには、有機物を分
解する微生物に酸素を供給するために送風を行なってい
る。2. Description of the Related Art In the current treatment of activated sludge, in order to treat wastewater containing organic substances such as inflowing sewage, air is blown to supply oxygen to microorganisms that decompose organic substances.
【０００３】この送風量を制御する方法として、送風に
必要な空気量を流入水量に比例させてコントロールする
方法がある。このため、微生物による処理では、水温や
微生物量、流入負荷量に応じて必要な送風量が変化す
る。このように諸条件が変わった場合に、最適な送風量
がどの程度なのかを考慮して送風量をコントロールする
必要がある。As a method of controlling the amount of air blow, there is a method of controlling the amount of air required for air blow in proportion to the amount of inflow water. Therefore, in the treatment with microorganisms, the required air flow rate changes depending on the water temperature, the amount of microorganisms, and the inflow load. When various conditions are changed in this way, it is necessary to control the air flow rate in consideration of the optimum air flow rate.
【０００４】現在、主流の送風量制御方法は、溶存酸素
濃度（以下DO濃度と称す）を測定して、そのDO濃度をあ
る値にする制御である。この制御方法は、微生物が要求
した酸素の残りがDO濃度として計測されるため、不必要
に送風量が多くならないという特徴がある。Currently, the mainstream air flow rate control method is a control in which the dissolved oxygen concentration (hereinafter referred to as DO concentration) is measured and the DO concentration is set to a certain value. This control method is characterized by the fact that the amount of air blown does not increase unnecessarily because the remaining oxygen content required by the microorganism is measured as the DO concentration.
【０００５】また、従来から行なわれている送風量制御
としては、流入流量に比例して送風量を制御する方法が
ある。この制御方法は、流入負荷が安定して流入する場
合は、比較的有効な方法であるが、季節的な変動に対し
ては、送風量の見直しを行う必要がある。Further, as the air flow rate control conventionally performed, there is a method of controlling the air flow rate in proportion to the inflow flow rate. This control method is relatively effective when the inflow load is stable and flows in, but it is necessary to review the air flow rate for seasonal fluctuations.
【０００６】[0006]
【発明が解決しようとする課題】活性汚泥処理で送風量
を制御する方法には、前述した方法以外にも様々な方法
がある。例えば、１つの処理系列において、別の処理方
法により送風量を制御した場合、どの処理方法による送
風量が最も効果的なのかを判断するのは困難である。There are various methods other than the above-mentioned method for controlling the air flow rate in the activated sludge treatment. For example, when the air flow rate is controlled by another processing method in one processing sequence, it is difficult to determine which processing method is most effective.
【０００７】しかし、単純に送風により消費した電力を
比較することは容易であるが、流入負荷が全く同じ場合
となることは、実際のところ皆無であり、水温も変化
し、微生物の状態も変化しているため、送風により消費
した電力を単純に比較することは容易にできない問題が
ある。また、この場合、処理された水質も考慮する必要
がある。However, although it is easy to simply compare the electric power consumed by the blown air, the fact that the inflow load is exactly the same is actually none, the water temperature changes, and the state of microorganisms also changes. Therefore, there is a problem that it is not easy to simply compare the electric power consumed by the blown air. In this case, it is also necessary to consider treated water quality.
【０００８】従って、どの制御方法が最も効果的な送風
量制御方法であるかを判断する手段がないため、効率的
でかつ最適な送風量制御方法の選択が困難である。Therefore, since there is no means for judging which control method is the most effective air flow rate control method, it is difficult to select an efficient and optimum air flow rate control method.
【０００９】この発明は上記の事情に鑑みてなされたも
ので、微生物に必要な送風量を効率的でかつ最適に制御
できる活性汚泥処理における送風量制御方法及び送風量
制御プログラム並びにそのプログラムを記録した記録媒
体を提供することを目的とする。The present invention has been made in view of the above circumstances, and records an air flow rate control method and an air flow rate control program in an activated sludge process that can efficiently and optimally control the air flow rate required for microorganisms, and the program thereof. It is an object of the present invention to provide such a recording medium.
【００１０】[0010]
【課題を解決するための手段】この発明は、上記の目的
を達成するために、第１発明は、有機物を含む被処理水
を嫌気槽、曝気槽、沈殿池を介して処理水を得る際に、
曝気槽への空気送風量を制御して活性汚泥処理する方法
において、被処理水と処理水のCOD計測値、曝気槽のMLS
S及びDO計測値を演算装置に入力して演算し、その演算
結果に基づいて曝気槽への空気送風量を制御することを
特徴とするものである。In order to achieve the above object, the present invention relates to a method for obtaining treated water containing organic matter through an anaerobic tank, an aeration tank and a sedimentation tank. To
In the method of controlling activated air sludge by controlling the amount of air blown to the aeration tank, the COD measurement value of the treated water and the treated water, MLS of the aeration tank
It is characterized in that the S and DO measurement values are input to a calculation device and calculated, and the amount of air blown to the aeration tank is controlled based on the calculation result.
【００１１】第２発明は、前記演算装置が、下記式を演
算し、その演算結果で送風量が最小な値となるように制
御することを特徴とするものである。A second aspect of the present invention is characterized in that the arithmetic unit calculates the following equation and controls the air flow rate to a minimum value as a result of the arithmetic operation.
【００１２】α＊RT＊β＊QBQC＊γ＊QBSS＊δ＊CODos
＊ε＊DOs
但し、RT：滞留時間を表す数値、QBQC：流入負荷に対す
る送風量を表す数値、QBSS：MLSSに対する送風量を表す
数値、CODos：目標とする処理水CODに対する処理水COD
を表す数値、DOs：計測DOと目標DOに対する偏差を表す
数値、α、β、γ、δ、ε：各項の重み係数
第３発明は、前記曝気槽に呼吸速度計を設置し、その呼
吸速度計の計測値を演算装置に入力して演算することを
特徴とするものである。Α * RT * β * QBQC * γ * QBSS * δ * CODos
* Ε * DOs However, RT: Numerical value showing residence time, QBQC: Numerical value showing air flow rate against inflow load, QBSS: Numerical value showing air flow rate to MLSS, CODos: Treated water COD against target treated water COD
, DOs: Numerical value showing deviation from measured DO and target DO, α, β, γ, δ, ε: Weighting factor of each term. The third invention is to install a respiration rate meter in the aeration tank, It is characterized in that the measured value of the speedometer is input to a calculation device for calculation.
【００１３】第４発明は、前記演算装置が、下記式を演
算し、その演算結果で送風量が最小な値となるように制
御するとともに、栄養塩を除去するようにしたことを特
徴とするものである。A fourth aspect of the present invention is characterized in that the arithmetic unit calculates the following equation and controls the air flow rate to a minimum value as a result of the arithmetic operation and removes nutrient salts. It is a thing.
【００１４】α＊RT＊β＊QBQC＊γ＊QBSS＊δ＊CODos
＊ε＊DOs＊ζ＊QBNH＊η＊NHos
但し、RT：滞留時間を表す数値、QBQC：流入負荷に対す
る送風量を表す数値、QBSS：MLSSに対する送風量を表す
数値、CODos：目標とする処理水CODに対する処理水COD
を表す数値、DOs：計測DOと目標DOに対する偏差を表す
数値、QBNH：アンモニア性窒素などに対する送風量を表
す数値、NHos：目標とする処理水アンモニア性窒素に対
する処理水アンモニア性窒素を表す数値、α、β、γ、
δ、ε、ζ、η：各項の重み係数
第５発明は、有機物を含む被処理水を嫌気槽、曝気槽、
沈殿池を介して処理水を得る際に、曝気槽への空気送風
量を制御して活性汚泥処理する方法において、被処理水
と処理水のCOD計測値、曝気槽のMLSS及びDO計測値を演
算装置に入力して演算する手順と、この手順による演算
結果に基づいて曝気槽への空気送風量を制御する手順と
を、コンピュータに実行させるためのプログラムとした
ことを特徴とするものである。Α * RT * β * QBQC * γ * QBSS * δ * CODos
* Ε * DOs * ζ * QBNH * η * NHos where RT: retention time value, QBQC: air flow rate for inflow load, QBSS: air flow rate for MLSS, CODos: target treated water Treated water COD against COD
, DOs: Numerical value indicating deviation from measured DO and target DO, QBNH: Numerical value indicating air flow rate for ammonia nitrogen, etc. NHos: Numerical value indicating treated water ammonia nitrogen relative to target treated water ammonia nitrogen, α, β, γ,
[delta], [epsilon], [zeta], [eta]: Weighting coefficient of each term The fifth invention is to treat water to be treated containing organic matter in an anaerobic tank, an aeration tank,
When the treated water is obtained through the settling basin, the COD measurement value of the treated water and the treated water, the MLSS and DO measurement values of the aeration tank are controlled in the method of controlling activated air sludge treatment to the aeration tank. A program for causing a computer to execute a procedure of inputting to a computing device and performing a computation and a procedure of controlling an air blowing amount to the aeration tank based on a computation result by the procedure. .
【００１５】第６発明は、第５発明に記載の手順をコン
ピュータに実行させるためのプログラムとし、このプロ
グラムをコンピュータが読み取りできる記録媒体に記録
したことを特徴とするものである。A sixth invention is a program for causing a computer to execute the procedure described in the fifth invention, and the program is recorded on a computer-readable recording medium.
【００１６】[0016]
【発明の実施の形態】以下この発明の実施の形態を図面
に基づいて説明する。図１はこの発明の実施の第１形態
を述べるための活性汚泥処理装置の構成説明図で、図１
において、１１は被処理水である流入水が導入される嫌
気槽で、この嫌気槽１１に導入された被処理水は、３段
の曝気槽１２ａ，１２ｂ，１２ｃで生物処理されて沈殿
池１３に導かれる。沈殿池１３では、生物処理過程にお
いて発生した汚泥を沈殿除去し、清澄な処理水を得る。
沈殿池１３で沈殿された汚泥は、返送汚泥として嫌気槽
１１に戻すとともに、一部は余剰汚泥として処理され
る。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration explanatory view of an activated sludge treatment device for describing a first embodiment of the present invention.
In the figure, 11 is an anaerobic tank into which inflow water which is water to be treated is introduced. Be led to. In the sedimentation tank 13, sludge generated in the biological treatment process is sedimented and removed to obtain clear treated water.
The sludge settled in the settling tank 13 is returned to the anaerobic tank 11 as return sludge, and a part of the sludge is treated as excess sludge.
【００１７】曝気槽１２ａ，１２ｂ，１２ｃには、活性
汚泥が必要とする空気を、ブロア１４から送風する。こ
のブロア１４は、以下に述べるように空気の送風量が制
御されるように構成されている。Air required by the activated sludge is blown from the blower 14 to the aeration tanks 12a, 12b, 12c. The blower 14 is configured so that the amount of air blown is controlled as described below.
【００１８】１５は、流入水の化学的酸素要求量（CO
D）を測定する流入水COD計で、この流入水COD計１５で
測定した計測値は、バスライン１６を介して演算装置１
７に記録される。15 is the chemical oxygen demand (CO
Inflow water COD meter for measuring D), the measurement value measured by this inflow water COD meter 15 is calculated via the bus line 16 to the arithmetic unit 1
Recorded in 7.
【００１９】演算装置１７には、曝気槽１２ｃにおける
活性汚泥浮遊物（MLSS）を計測するMLSS計１８からの計
測値と溶存酸素（DO）を計測するDO計１９からの計測値
が記録されるとともに、沈殿池１３の処理水CODを測定
する処理水COD計２０からの計測値が記録される。演算
装置１７は、下記(１)式を演算し、その演算結果による
送風量の大小を記録する。The arithmetic unit 17 records the measured value from the MLSS meter 18 which measures the activated sludge suspended matter (MLSS) in the aeration tank 12c and the measured value from the DO meter 19 which measures the dissolved oxygen (DO). At the same time, the measurement value from the treated water COD meter 20 that measures the treated water COD of the sedimentation tank 13 is recorded. The computing device 17 computes the following equation (1) and records the magnitude of the blown air volume as a result of the computation.
【００２０】なお、COD計１５、２０は、UV計のCOD換算
値でもよい。また、図示しないが、風量計からの計測値
も演算装置１７に記録されるように構成されている。The COD meters 15 and 20 may be COD converted values of a UV meter. Although not shown, the measurement value from the air flow meter is also recorded in the arithmetic unit 17.
【００２１】図１に示すように構成された活性汚泥処理
装置を用いて、下水などの有機物を含む廃水を活性汚泥
法で処理する場合、活性汚泥に空気を送風制御すること
によって、消費したエネルギーを評価するため、下記
（１）式を演算し、演算結果が最小な値になる空気送風
量制御を最良の方法とする。When the activated sludge treatment device configured as shown in FIG. 1 is used to treat wastewater containing organic matter such as sewage by the activated sludge method, the energy consumed is controlled by blowing air through the activated sludge. In order to evaluate the above, the following formula (1) is calculated, and the air blowing amount control that minimizes the calculation result is the best method.
【００２２】
α＊RT＊β＊QBQC＊γ＊QBSS＊δ＊CODos＊ε＊DOs …（１）
但し、RT：滞留時間を表す数値、QBQC：流入負荷に対す
る送風量を表す数値、QBSS：MLSSに対する送風量を表す
数値、CODos：目標とする処理水CODに対する処理水COD
を表す数値、DOs：計測DOと目標DOに対する偏差を表す
数値、α、β、γ、δ、ε：各項の重み係数であり、重
み係数は、重要視する項に重みを付加するために値を調
節する。Α * RT * β * QBQC * γ * QBSS * δ * CODos * ε * DOs (1) However, RT: Numerical value representing residence time, QBQC: Numerical value representing air flow rate against inflow load, QBSS: MLSS CODos, a numerical value that indicates the amount of air blown against the target treated water COD against the target treated water COD
, A numerical value indicating the deviation from the measured DO and the target DO, α, β, γ, δ, ε: weighting factors for each term, and the weighting factors are used to add weight to the important terms. Adjust the value.
【００２３】上記（１）式に図１で計測した値を代入
し、演算して、その演算結果によって、そのときの空気
送風量の大小を演算装置１７に記録する。The values measured in FIG. 1 are substituted into the above equation (1), calculation is performed, and the magnitude of the air blowing amount at that time is recorded in the calculation device 17 according to the calculation result.
【００２４】演算装置１７には、各計測器（センサー）
からの計測値情報が図示しない記録装置に記録されてお
り、その情報をグラフ画面として任意の計測情報と制御
方法を表示する。なお、各計測器（センサー）の計測値
は図示しない別の記録装置に格納して、通信により演算
装置１７に供給するようにしてもよい。The computing device 17 includes various measuring instruments (sensors).
The measured value information from is recorded in a recording device (not shown), and the measured information is used as a graph screen to display arbitrary measured information and a control method. The measurement values of the respective measuring devices (sensors) may be stored in another recording device (not shown) and supplied to the arithmetic unit 17 by communication.
【００２５】空気送風量の制御を変更した場合は、制御
方法による上記（１）式の演算結果の違いを図示しない
表示装置に表示することにより、運転操作員は、どの制
御方法が最小のコストで運転しているかを確認すること
ができる。When the control of the air blowing amount is changed, the difference in the calculation result of the above formula (1) depending on the control method is displayed on a display device (not shown) so that the operator can select which control method has the lowest cost. You can check whether you are driving in.
【００２６】図２は演算装置の処理方法を示すフローチ
ャートで、ステップＳ１は演算装置が割り込み待ちをし
ていてときで、割り込みがあると演算装置にステップＳ
２でセンサー計測値サンプリング信号が入力される。FIG. 2 is a flow chart showing the processing method of the arithmetic unit. Step S1 is when the arithmetic unit is waiting for an interrupt.
At 2, the sensor measurement value sampling signal is input.
【００２７】演算装置はセンサー計測値があると、ステ
ップＳ３で演算し、その演算結果をステップＳ4で保管
する。ステップＳ４の保管が終了したなら、演算装置
は、ステップＳ５で割り込み待ちとなる。If the sensor measurement value is present, the arithmetic unit calculates it in step S3 and stores the calculation result in step S4. When the storage in step S4 is completed, the arithmetic unit waits for an interrupt in step S5.
【００２８】図3はこの発明の実施の第２形態を述べる
ための活性汚泥処理装置の構成説明図で、第１形態と同
一部分には同一符号を付してその説明を省略する。この
第2形態は、上述した第1形態にアンモニアなどの栄養塩
除去に利用される酸素量に関する指標を設けたものであ
る。アンモニアなどの栄養塩除去には硝化細菌が関与す
るが、この細菌は酸素を多く消費するため考慮する必要
がある。FIG. 3 is a structural explanatory view of an activated sludge treatment device for describing a second embodiment of the present invention. The same parts as those in the first embodiment are designated by the same reference numerals and the description thereof will be omitted. In the second embodiment, an index related to the amount of oxygen used for removing nutrient salts such as ammonia is provided in the first embodiment described above. Nitrifying bacteria are involved in the removal of nutrients such as ammonia, but this bacterium consumes a large amount of oxygen, which needs to be considered.
【００２９】このため、図3に示すように曝気槽１２ｂ
に呼吸速度計21を設置して、この呼吸速度計21の計測値
を演算装置１７に記録するとともに、その計測値を用い
て栄養塩除去に関する部分の演算式を（２）式に付加し
て評価を行う。下記に示す（２）式が栄養塩除去に関す
る部分を付加した式である。Therefore, as shown in FIG. 3, the aeration tank 12b
The respiration rate meter 21 is installed in the computer, the measured value of the respiration rate meter 21 is recorded in the arithmetic unit 17, and the arithmetic expression of the part related to nutrient salt removal is added to the equation (2) using the measured value. Make an evaluation. Equation (2) shown below is an equation to which a part relating to nutrient salt removal is added.
【００３０】
α＊RT＊β＊QBQC＊γ＊QBSS＊δ＊CODos＊ε＊DOs＊ζ＊
QBNH＊η＊NHos …（２）
但し、QBNH：アンモニア性窒素などに対する送風量を表
す数値、NHos：目標とする処理水アンモニア性窒素に対
する処理水アンモニア性窒素を表す数値、ζ、η：各項
の重み係数である。Α * RT * β * QBQC * γ * QBSS * δ * CODos * ε * DOs * ζ * QBNH * η * NHos (2) However, QBNH: Numerical value representing the amount of air blown to ammonia nitrogen, NHos : Numerical value representing treated water ammonia nitrogen with respect to target treated water ammonia nitrogen, ζ, η: Weighting coefficient of each term.
【００３１】上記（２）式の演算結果を用いることによ
り、第１形態では得られない、アンモニアなどの栄養塩
除去に利用される酸素量を考慮することができ、硝化細
菌を用いた場合にも充分対応することができる。By using the calculation result of the above equation (2), the amount of oxygen used for removing nutrient salts such as ammonia, which cannot be obtained in the first embodiment, can be taken into consideration, and when nitrifying bacteria are used, Can cope well.
【００３２】上記第1、第2形態は、実際の活性汚泥処理
に適用した制御方法であるが、コンピュータで演算可能
なシミュレーションプログラムで第1形態の（１）式に
よりエネルギーを評価する。このシミューレーションプ
ログラムは、微生物の反応を数式として表現したプログ
ラムで、図４は、このプログラムの処理フローチャート
である。Although the first and second forms are control methods applied to actual activated sludge treatment, the energy is evaluated by the equation (1) of the first form using a computer-simulatable simulation program. This simulation program is a program that expresses the reaction of microorganisms as a mathematical expression, and FIG. 4 is a processing flowchart of this program.
【００３３】図4において、まずステップS１でシミュレ
ーションプログラムを起動して、シミュレーションデー
タをステップS２で読み込む。読み込んだデータにより
ステップS３で水質演算を行う。この演算結果をステッ
プS４で格納し、ステップS5でエネルギー評価演算を行
い、その演算結果をステップS６で保管するとともに、
演算結果から処理の終了条件をステップS７で判定す
る。In FIG. 4, first, the simulation program is started in step S1, and the simulation data is read in step S2. Water quality calculation is performed in step S3 based on the read data. The calculation result is stored in step S4, the energy evaluation calculation is performed in step S5, and the calculation result is stored in step S6.
Based on the calculation result, the processing termination condition is determined in step S7.
【００３４】判定の結果、「Ｎ」ならステップS3の処理
に戻り、「Ｙ」なら評価結果をステップS７で表示した
のち、ステップS８でデータ割り込み待ちになる。If the result of the determination is "N", the process returns to step S3. If the result is "Y", the evaluation result is displayed in step S7, and then in step S8, the data interrupt is awaited.
【００３５】上記シミュレーションプログラムの処理フ
ローチャートは、（１）式によりエネルギーを評価する
ものであるが、第２形態の（２）式によりエネルギーを
評価する場合にも適用できる。The processing flow chart of the simulation program described above evaluates the energy by the equation (1), but can also be applied to the case of evaluating the energy by the equation (2) of the second mode.
【００３６】図１と図３に示した演算装置の処理機能を
プログラムとして構成し、コンピュータを用いて実現す
ることができることは言うまでもなく、コンピュータで
演算処理機能を実現するためのプログラム、あるいは、
コンピュータにその処理手順を実行させるためのプログ
ラムを、そのコンピュータが読み取り可能な記録媒体、
例えば、フロッピーディスク（登録商標）、ＭＯ，ＲＯ
Ｍ，ＣＤ，ＤＶＤなどに記録して、保存したり、提供し
たりすることが可能である。It is needless to say that the processing functions of the arithmetic unit shown in FIGS. 1 and 3 can be configured as a program and can be realized by using a computer, or a program for realizing the arithmetic processing function by a computer, or
A program for causing a computer to execute the processing procedure, a computer-readable recording medium,
For example, floppy disk (registered trademark), MO, RO
It is possible to record it on an M, a CD, a DVD, etc., and save or provide it.
【００３７】[0037]
【発明の効果】以上述べたように、この発明によれば、
活性汚泥処理において、微生物に必要な送風量の選択を
効率的でかつ最適に制御することができるようになる。As described above, according to the present invention,
In the activated sludge treatment, it becomes possible to efficiently and optimally control the selection of the air flow required for the microorganisms.
【図１】この発明の実施の第１形態を示す活性汚泥処理
装置の構成説明図。FIG. 1 is a structural explanatory view of an activated sludge treatment device showing a first embodiment of the present invention.
【図２】第１形態の演算装置の処理方法を示すフローチ
ャート。FIG. 2 is a flowchart showing a processing method of the arithmetic unit according to the first embodiment.
【図３】この発明の実施の第２形態を示す活性汚泥処理
装置の構成説明図。FIG. 3 is a structural explanatory view of an activated sludge treatment device showing a second embodiment of the invention.
【図４】シミューレーションプログラムの処理フローチ
ャート。FIG. 4 is a processing flowchart of a simulation program.
１１…嫌気槽 １２ａ〜１２ｃ…曝気槽 １３…沈殿池 １４…ブロア １５…流入水COD計 １６…バスライン １７…演算装置 １８…ＭＬＳＳ計 １９…ＤＯ計 ２０…処理水COD計 ２１…呼吸速度計 11 ... Anaerobic tank 12a to 12c ... Aeration tank 13 ... Settling basin 14 ... Blower 15 ... Inflow COD meter 16 ... Bus line 17 ... Arithmetic device 18 ... MLSS meter 19 ... DO total 20 ... Treated water COD meter 21 ... Respirometer
───────────────────────────────────────────────────── フロントページの続き (72)発明者 大石 亮 東京都品川区大崎２丁目１番17号 株式会 社明電舎内 Ｆターム(参考） 4D028 BB07 CA09 CC00 CC02 CC05 CC07 CE03 4D040 BB02 BB52 BB91 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Ryo Oishi 2-17 Osaki, Shinagawa-ku, Tokyo Stock market Shameidensha F-term (reference) 4D028 BB07 CA09 CC00 CC02 CC05 CC07 CE03 4D040 BB02 BB52 BB91
Claims (6)
槽、沈殿池を介して処理水を得る際に、曝気槽への空気
送風量を制御して活性汚泥処理する方法において、 被処理水と処理水のCOD計測値、曝気槽のMLSS及びDO計
測値を演算装置に入力して演算し、その演算結果に基づ
いて曝気槽への空気送風量を制御することを特徴とする
活性汚泥処理における送風量制御方法。1. A method for treating activated sludge by controlling the amount of air blown to the aeration tank when the treated water containing organic matter is obtained through an anaerobic tank, an aeration tank, and a sedimentation tank. Activated sludge characterized by inputting COD measurement values of water and treated water, MLSS and DO measurement values of the aeration tank to a calculation device, and controlling the air blowing amount to the aeration tank based on the calculation result. Control method of air flow in processing.
演算結果で送風量が最小な値となるように制御すること
を特徴とする請求項１記載の活性汚泥処理における送風
量制御方法。 α＊RT＊β＊QBQC＊γ＊QBSS＊δ＊CODos＊ε＊DOs 但し、RT：滞留時間を表す数値、QBQC：流入負荷に対す
る送風量を表す数値、QBSS：MLSSに対する送風量を表す
数値、CODos：目標とする処理水CODに対する処理水COD
を表す数値、DOs：計測DOと目標DOに対する偏差を表す
数値、α、β、γ、δ、ε：各項の重み係数2. The method for controlling air flow in activated sludge treatment according to claim 1, wherein the arithmetic unit calculates the following equation and controls the air flow to be a minimum value as a result of the arithmetic operation. . α * RT * β * QBQC * γ * QBSS * δ * CODos * ε * DOs where RT: retention time value, QBQC: airflow rate for inflow load, QBSS: airflow rate for MLSS, CODos: Treated water COD against target treated water COD
, DOs: Numerical value showing deviation from measured DO and target DO, α, β, γ, δ, ε: Weighting factor of each term
呼吸速度計の計測値を演算装置に入力して演算すること
を特徴とする請求項１記載の活性汚泥処理における送風
量制御方法。3. A method for controlling air flow in activated sludge treatment according to claim 1, wherein a respiration rate meter is installed in the aeration tank, and a measured value of the respiration rate meter is input to a calculation device for calculation. .
演算結果で送風量が最小な値となるように制御するとと
もに、栄養塩を除去するようにしたことを特徴とする請
求項３記載の活性汚泥処理における送風量制御方法。 α＊RT＊β＊QBQC＊γ＊QBSS＊δ＊CODos＊ε＊DOs＊ζ
＊QBNH＊η＊NHos 但し、RT：滞留時間を表す数値、QBQC：流入負荷に対す
る送風量を表す数値、QBSS：MLSSに対する送風量を表す
数値、CODos：目標とする処理水CODに対する処理水COD
を表す数値、DOs：計測DOと目標DOに対する偏差を表す
数値、QBNH：アンモニア性窒素などに対する送風量を表
す数値、NHos：目標とする処理水アンモニア性窒素に対
する処理水アンモニア性窒素を表す数値、α、β、γ、
δ、ε、ζ、η：各項の重み係数4. The arithmetic unit calculates the following equation, controls the air flow rate to a minimum value as a result of the arithmetic operation, and removes nutrient salts. A method for controlling air flow in the activated sludge treatment described. α * RT * β * QBQC * γ * QBSS * δ * CODos * ε * DOs * ζ
* QBNH * η * NHos where RT: Numerical value for residence time, QBQC: Numerical value for air flow rate against inflow load, QBSS: Numerical value for air flow rate for MLSS, CODos: Treated water COD for target treated water COD
, DOs: Numerical value indicating deviation from measured DO and target DO, QBNH: Numerical value indicating air flow rate for ammonia nitrogen, etc. NHos: Numerical value indicating treated water ammonia nitrogen relative to target treated water ammonia nitrogen, α, β, γ,
δ, ε, ζ, η: Weighting factor of each term
槽、沈殿池を介して処理水を得る際に、曝気槽への空気
送風量を制御して活性汚泥処理する方法において、 被処理水と処理水のCOD計測値、曝気槽のMLSS及びDO計
測値を演算装置に入力して演算する手順と、 この手順による演算結果に基づいて曝気槽への空気送風
量を制御する手順とを、 コンピュータに実行させるためのプログラムとしたこと
を特徴とする活性汚泥処理における送風量制御プログラ
ム。5. A method for treating activated sludge by controlling the amount of air blown to the aeration tank when the treated water containing organic matter is obtained through an anaerobic tank, an aeration tank, and a sedimentation tank. Input the COD measurement value of water and treated water, MLSS and DO measurement value of the aeration tank to the calculation device and calculate, and control the air blow rate to the aeration tank based on the calculation result by this procedure. A program for controlling air flow in activated sludge treatment, characterized in that the program is executed by a computer.
行させるためのプログラムとし、このプログラムを、コ
ンピュータが読み取りできる記録媒体に記録したことを
特徴とする活性汚泥処理における送風量制御プログラを
記録した記録媒体。6. A program for causing a computer to execute the procedure according to claim 5, wherein the program is recorded in a computer-readable recording medium, and an air flow rate control program in activated sludge treatment is recorded. recoding media.
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|---|---|---|---|
| JP2002145633A JP2003334582A (en) | 2002-05-21 | 2002-05-21 | Air blow amount control method in activated sludge treatment, air blow amount control program and recording medium having program recorded thereon |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002145633A JP2003334582A (en) | 2002-05-21 | 2002-05-21 | Air blow amount control method in activated sludge treatment, air blow amount control program and recording medium having program recorded thereon |
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| Publication Number | Publication Date |
|---|---|
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ID=29704862
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|---|---|---|---|
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008501500A (en) * | 2004-06-02 | 2008-01-24 | オテヴェ・ソシエテ・アノニム | Water treatment method using bioreactor and corresponding apparatus in which the speed of the air continuously injected into the reactor is adjusted |
| JP2008259990A (en) * | 2007-04-13 | 2008-10-30 | Sanritsu Kakoki Kk | Waste water treatment system and waste water treatment method |
| JP2011147858A (en) * | 2010-01-20 | 2011-08-04 | Hitachi Ltd | Apparatus and method for treating sewage |
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| JP2012170883A (en) * | 2011-02-21 | 2012-09-10 | Sanki Eng Co Ltd | Activated sludge treating apparatus and treating method |
| JP2012228645A (en) * | 2011-04-26 | 2012-11-22 | Hitachi Ltd | Water treatment apparatus, water treating method, and program for the method |
| KR101370595B1 (en) * | 2012-08-27 | 2014-03-06 | (주)티에스케이워터 | Control system for saving air blower energy |
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2002
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008501500A (en) * | 2004-06-02 | 2008-01-24 | オテヴェ・ソシエテ・アノニム | Water treatment method using bioreactor and corresponding apparatus in which the speed of the air continuously injected into the reactor is adjusted |
| JP2008259990A (en) * | 2007-04-13 | 2008-10-30 | Sanritsu Kakoki Kk | Waste water treatment system and waste water treatment method |
| JP2011147858A (en) * | 2010-01-20 | 2011-08-04 | Hitachi Ltd | Apparatus and method for treating sewage |
| JP2012135717A (en) * | 2010-12-27 | 2012-07-19 | Water Agency Inc | Operation assisting apparatus and operation assisting method of sewage treatment plant |
| JP2012170883A (en) * | 2011-02-21 | 2012-09-10 | Sanki Eng Co Ltd | Activated sludge treating apparatus and treating method |
| JP2012228645A (en) * | 2011-04-26 | 2012-11-22 | Hitachi Ltd | Water treatment apparatus, water treating method, and program for the method |
| KR101370595B1 (en) * | 2012-08-27 | 2014-03-06 | (주)티에스케이워터 | Control system for saving air blower energy |
| WO2014035110A1 (en) * | 2012-08-27 | 2014-03-06 | (주)티에스케이워터 | Control system for reducing the amount of energy used in blower |
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