JPH09122681A - Water quality controlling apparatus - Google Patents

Water quality controlling apparatus

Info

Publication number
JPH09122681A
JPH09122681A JP7288595A JP28859595A JPH09122681A JP H09122681 A JPH09122681 A JP H09122681A JP 7288595 A JP7288595 A JP 7288595A JP 28859595 A JP28859595 A JP 28859595A JP H09122681 A JPH09122681 A JP H09122681A
Authority
JP
Japan
Prior art keywords
fuzzy
phosphorus
control
water quality
batch
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.)
Granted
Application number
JP7288595A
Other languages
Japanese (ja)
Other versions
JP3452162B2 (en
Inventor
Yoichi Hamamoto
洋一 浜本
Shinya Ogata
真也 尾形
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nishihara Environment Co Ltd
Original Assignee
Nishihara Environmental Sanitation Research Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nishihara Environmental Sanitation Research Corp filed Critical Nishihara Environmental Sanitation Research Corp
Priority to JP28859595A priority Critical patent/JP3452162B2/en
Publication of JPH09122681A publication Critical patent/JPH09122681A/en
Application granted granted Critical
Publication of JP3452162B2 publication Critical patent/JP3452162B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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)

Abstract

PROBLEM TO BE SOLVED: To highly efficiently eliminate nitrogen and/or phosphorus in drainage by measuring dissolved oxygen concn., pH and oxidation-reduction potential in a batch tank and controlling stirring and aeration process times by fuzzy inference based on these measured values. SOLUTION: Instrumental sensors 2 for measuring dissolved oxygen concn. (DO), pH and oxidation-reduction potential (ORP) of a waste water are arranged in a batch tank 1 in a waste water treatment facility and stirring and aeration process times when a blower 4 is on-off controlled are controlled by fuzzy inference of a fuzzy controller 3 based on the measured values of these instrumental sensors 2. It is possible thereby to eliminate nitrogen and phosphorus with more high efficiency and comparing this fuzzy control with timer control, it is possible to improve nitrogen elimination ratio from about 67% to about 91% and phosphorus elimination ratio from 58% to about 79%.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】この発明は、排水中の窒素お
よび／またはリンを生物学的に除去する回分式活性汚泥
法による窒素および／またはリン除去を行う水質制御装
置に関するものである。TECHNICAL FIELD The present invention relates to a water quality control device for removing nitrogen and / or phosphorus by a batch activated sludge method for biologically removing nitrogen and / or phosphorus in waste water.

【０００２】[0002]

【従来の技術】従来の回分式活性汚泥法による排水中の
窒素および／またはリン除去制御装置は、撹拌および曝
気工程時間を運転管理者がタイマ等により手動で設定し
て制御していた。しかしながら、回分槽内への流入水量
およびその成分の変動により、タイマ制御だけでは常に
最適な制御を行うことは困難であった。2. Description of the Related Art In a conventional controller for removing nitrogen and / or phosphorus in waste water by the batch activated sludge method, the operation manager manually controls the stirring and aeration process times by a timer or the like. However, due to fluctuations in the amount of water flowing into the batch tank and its components, it was difficult to always perform optimum control only by timer control.

【０００３】また、溶存酸素濃度（ＤＯ）または酸化還
元電位（ＯＲＰ）等の水質計測機器を用いて制御を行う
場合も、ＤＯ計によるＤＯ値の一定値制御、ＤＯ計およ
びＯＲＰ計によるＤＯおよびＯＲＰの上限値制御が行わ
れていた。しかしながら、この場合も、１つの計測器に
より１つの値を制御する１入力１出力の制御であるの
で、計測器等の異常時には制御が困難であった。Also, when controlling using a water quality measuring instrument such as dissolved oxygen concentration (DO) or redox potential (ORP), the DO value is controlled to a constant value, and the DO and ORP meters are used to control the DO value. The upper limit value control of ORP was performed. However, in this case as well, since the control is one input and one output in which one value is controlled by one measuring instrument, it is difficult to control when the measuring instrument or the like is abnormal.

【０００４】また、特開平３−２８４３９８号公報に
は、連続流れ連続曝気式の下水処理の活性汚泥法におい
て、ＯＲＰ計およびｐＨ計により、送風量および曝気槽
のＤＯの目標値をファジィ推論を用いて制御する装置が
示されている。さらに、特開平５−３１４８８号公報に
は、連続流れ間欠曝気式のし尿処理の活性汚泥法におい
て、ＤＯ，ｐＨ，ＯＲＰおよびアンモニア態または酸化
態窒素により、送風量および曝気時間をファジィ推論を
用いて制御する方法が示されている。しかしながら、こ
れらの技術は、連続流れ式の活性汚泥法について示され
たものであり、回分式活性汚泥法について何ら示された
ものではなく、撹拌工程時間の制御についても全く述べ
られていなかった。Further, in Japanese Unexamined Patent Publication No. 3-284398, fuzzy inference is performed for the air flow rate and the target value of the DO of the aeration tank by an ORP meter and a pH meter in the activated sludge method of the continuous flow continuous aeration type sewage treatment. The device used to control is shown. Further, JP-A-5-31488 uses fuzzy reasoning for the air flow rate and aeration time depending on DO, pH, ORP and ammonia or oxide nitrogen in an activated sludge process for continuous flow intermittent aeration type night soil treatment. It is shown how to control. However, these techniques are shown for the continuous flow type activated sludge method, not for the batch type activated sludge method, and the control of the stirring step time is not described at all.

【０００５】[0005]

【発明が解決しようとする課題】従来の回分式活性汚泥
法による窒素および／またはリン除去制御装置は以上の
ように構成されているので、タイマ制御では最適制御を
行うことは困難であり、また、水質計測機器を用いて制
御を行う場合も、計測器等の異常時には制御が困難であ
った。また、水質計測機器を用いてファジィ制御を行う
装置もあるが、連続流れ式の活性汚泥法による装置であ
り、回分式活性汚泥法を対象としたものではないなどの
課題があった。Since the conventional nitrogen and / or phosphorus removal control device by the batch activated sludge method is configured as described above, it is difficult to perform optimum control by the timer control. Even when the control is performed using the water quality measuring device, the control is difficult when the measuring instrument or the like is abnormal. In addition, there is a device that performs fuzzy control using a water quality measuring device, but there is a problem that it is a device using a continuous flow type activated sludge method and not a batch type activated sludge method.

【０００６】この発明は上記のような課題を解決するた
めになされたもので、水質計測機器を用いてファジィ制
御を行うことによって、撹拌工程時間および曝気工程時
間を最適制御する水質制御装置を得ることを目的とす
る。The present invention has been made to solve the above problems, and a fuzzy control is performed using a water quality measuring device to obtain a water quality control device for optimally controlling the stirring process time and the aeration process time. The purpose is to

【０００７】[0007]

【課題を解決するための手段】この発明に係る水質制御
装置は、回分槽内の溶存酸素濃度，ｐＨおよび酸化還元
電位を計測する計測センサの計測値に基づいてファジィ
推論により、撹拌工程時間および曝気工程時間を制御す
るファジィコントローラを備えたものである。The water quality control apparatus according to the present invention is based on fuzzy inference based on the measurement values of a measurement sensor for measuring dissolved oxygen concentration, pH and redox potential in a batch tank. It is equipped with a fuzzy controller that controls the aeration process time.

【０００８】[0008]

【発明の実施の形態】BEST MODE FOR CARRYING OUT THE INVENTION

実施の形態１．以下、この発明の実施の一形態を説明す
る。図１はこの発明の実施の形態１による回分式活性汚
泥法による窒素および／またはリン除去を行う水質制御
装置を示す構成図であり、図において、１は汚水処理施
設に設けられた回分槽、２はこの回分槽１内に設けら
れ、汚水の溶存酸素濃度（ＤＯ），ｐＨ，酸化還元電位
（ＯＲＰ）を計測する計測センサ、３はこの計測センサ
２の計測値に基づいてファジィ推論により、ブロワ４を
オン・オフし、回分槽１の撹拌および曝気工程時間を制
御するファジィコントローラである。なお、計測センサ
２は、これらの計測値に加えて回分槽１の水位を計測
し、制御に加えてもよい。また、回分槽１への流入水量
が少なく、曝気工程時間だけで制御できない時は、送風
量を制御してもよい。Embodiment 1 FIG. An embodiment of the present invention will be described below. 1 is a block diagram showing a water quality control device for removing nitrogen and / or phosphorus by a batch activated sludge method according to Embodiment 1 of the present invention, in which 1 is a batch tank provided in a wastewater treatment facility, 2 is a measurement sensor provided in the batch tank 1 for measuring the dissolved oxygen concentration (DO), pH, and redox potential (ORP) of sewage, and 3 is a fuzzy inference based on the measurement value of the measurement sensor 2. It is a fuzzy controller that turns on and off the blower 4 and controls the stirring and aeration process times of the batch tank 1. The measurement sensor 2 may measure the water level of the batch tank 1 in addition to these measured values, and may add it to the control. Further, when the amount of water flowing into the batch tank 1 is small and control cannot be performed only by the aeration step time, the air flow rate may be controlled.

【０００９】次に動作について説明する。図２は計測セ
ンサ２で計測されたＤＯ，ｐＨ，ＯＲＰの計測値に基づ
いて、ファジィコントローラ３がファジィ推論により、
ブロワ４をオン・オフ制御した時の回分槽１の撹拌およ
び曝気工程時間を示したものである。Next, the operation will be described. FIG. 2 shows that the fuzzy controller 3 uses fuzzy inference based on the measured values of DO, pH, and ORP measured by the measurement sensor 2.
The figure shows the stirring and aeration process times of the batch tank 1 when the blower 4 is on / off controlled.

【００１０】図３は回分式活性汚泥法でのタイマ制御と
ファジィ制御の実験結果を比較したものであり、タイマ
制御とファジィ制御を比べると、窒素除去率が６７％か
ら９１％と大幅に向上し、リン除去率も５８％から７９
％と向上した。このように、ファジィコントローラ３に
より回分槽１の撹拌および曝気工程時間を最適制御した
結果、より高効率の窒素およびリン除去が可能になっ
た。また、この実施の形態の装置は、窒素除去またはリ
ン除去のみが必要とされる場合にも適用できることは言
うまでもない。なお、この実施の形態において、連続計
測可能な計測センサ２を用いているので、ファジィコン
トローラ３による回分槽１の撹拌および曝気工程時間を
例えば１分毎にファジィ推論することができ、撹拌およ
び曝気工程時間をより細かく最適に制御することができ
た。FIG. 3 compares the experimental results of the timer control and the fuzzy control in the batch activated sludge method. When the timer control and the fuzzy control are compared, the nitrogen removal rate is significantly improved from 67% to 91%. However, the phosphorus removal rate is from 58% to 79
% And improved. As described above, the fuzzy controller 3 optimally controls the stirring and aeration process times of the batch tank 1, and as a result, it is possible to more efficiently remove nitrogen and phosphorus. It goes without saying that the apparatus of this embodiment can be applied to the case where only nitrogen removal or phosphorus removal is required. In this embodiment, since the measurement sensor 2 capable of continuous measurement is used, the stirring and aeration process time of the batch tank 1 by the fuzzy controller 3 can be fuzzy inferred, for example, every 1 minute. The process time could be finely and optimally controlled.

【００１１】[0011]

【発明の効果】以上のように、この発明によれば、回分
槽内の溶存酸素濃度，ｐＨおよび酸化還元電位を計測す
る計測センサの計測値に基づいてファジィ推論により、
撹拌および曝気工程時間を制御するファジィコントロー
ラを備えるように構成したので、回分槽内への流入水量
およびその成分が変動しても、撹拌および曝気工程時間
を最適制御することができ、排水中の窒素および／また
はリンをより高効率に除去することができる効果があ
る。As described above, according to the present invention, fuzzy inference is performed based on the measurement values of the measurement sensor for measuring the dissolved oxygen concentration, pH and redox potential in the batch tank.
Since the fuzzy controller that controls the stirring and aeration process time is provided, even if the amount of water flowing into the batch tank and its components change, the stirring and aeration process time can be optimally controlled, and There is an effect that nitrogen and / or phosphorus can be removed with higher efficiency.

【図面の簡単な説明】[Brief description of the drawings]

【図１】この発明の実施の形態１による回分式活性汚泥
法による窒素および／またはリン除去を行う水質制御装
置を示す構成図である。FIG. 1 is a configuration diagram showing a water quality control device for removing nitrogen and / or phosphorus by a batch activated sludge method according to Embodiment 1 of the present invention.

【図２】ファジィコントローラによる制御状況を示す特
性図である。FIG. 2 is a characteristic diagram showing a control situation by a fuzzy controller.

【図３】回分式活性汚泥法でのタイマ制御とファジィ制
御の実験結果を比較した表図である。FIG. 3 is a table comparing the experimental results of timer control and fuzzy control in the batch activated sludge method.

【符号の説明】[Explanation of symbols]

１ 回分槽 ２ 計測センサ ３ ファジィコントローラ 1 batch tank 2 measurement sensor 3 fuzzy controller

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 回分槽内の溶存酸素濃度，ｐＨおよび酸
化還元電位を計測する計測センサと、この計測センサの
計測値に基づいてファジィ推論により、撹拌工程時間お
よび曝気工程時間を制御するファジィコントローラとを
備え、回分式活性汚泥法による窒素および／またはリン
除去を行う水質制御装置。1. A measurement sensor for measuring dissolved oxygen concentration, pH and redox potential in a batch tank, and a fuzzy controller for controlling agitation process time and aeration process time by fuzzy inference based on the measurement values of the measurement sensor. And a water quality control device for removing nitrogen and / or phosphorus by the batch activated sludge method.
JP28859595A 1995-11-07 1995-11-07 Water quality control device Expired - Fee Related JP3452162B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP28859595A JP3452162B2 (en) 1995-11-07 1995-11-07 Water quality control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP28859595A JP3452162B2 (en) 1995-11-07 1995-11-07 Water quality control device

Publications (2)

Publication Number Publication Date
JPH09122681A true JPH09122681A (en) 1997-05-13
JP3452162B2 JP3452162B2 (en) 2003-09-29

Family

ID=17732289

Family Applications (1)

Application Number Title Priority Date Filing Date
JP28859595A Expired - Fee Related JP3452162B2 (en) 1995-11-07 1995-11-07 Water quality control device

Country Status (1)

Country Link
JP (1) JP3452162B2 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2779140A1 (en) * 1998-06-02 1999-12-03 Suez Lyonnaise Des Eaux METHOD FOR CONTROLLING AERATION IN A BIOLOGICAL WASTEWATER TREATMENT PLANT
KR100338510B1 (en) * 1999-07-16 2002-05-30 라창식 Real-time control technology for wastewater treatment system
JP2002307095A (en) * 2001-04-17 2002-10-22 Mitsubishi Heavy Ind Ltd Wastewater treatment facility
KR100424999B1 (en) * 2002-03-19 2004-03-27 주식회사 한스환경엔지니어링 Controlling system and method of sequencing batch reactor
WO2005068379A1 (en) * 2004-01-13 2005-07-28 Itochu Forestry Corp. Wastewater cleaning system
JP2007501112A (en) * 2003-08-04 2007-01-25 オテヴェ・ソシエテ・アノニム Biological water treatment process and plant using activated sludge process to control aeration
JP2009502494A (en) * 2005-08-01 2009-01-29 スエズ アンヴィロンマーン Method and apparatus for nitrogen enrichment (high nitrogen concentration) wastewater treatment in a continuous fractionation cycle biological reactor
CN103570190A (en) * 2013-10-20 2014-02-12 北京化工大学 Method for controlling feeding amount of chemical phosphorus removal reagents of water reclamation plants based on fuzzy control

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2779140A1 (en) * 1998-06-02 1999-12-03 Suez Lyonnaise Des Eaux METHOD FOR CONTROLLING AERATION IN A BIOLOGICAL WASTEWATER TREATMENT PLANT
WO1999062832A1 (en) * 1998-06-02 1999-12-09 Suez Lyonnaise Des Eaux Method for regulating aeration during waste water biological treatment
US6527956B1 (en) * 1998-06-02 2003-03-04 Suez Lyonnaise Des Eaux Method for regulating aeration during waste water biological treatment
KR100338510B1 (en) * 1999-07-16 2002-05-30 라창식 Real-time control technology for wastewater treatment system
JP2002307095A (en) * 2001-04-17 2002-10-22 Mitsubishi Heavy Ind Ltd Wastewater treatment facility
KR100424999B1 (en) * 2002-03-19 2004-03-27 주식회사 한스환경엔지니어링 Controlling system and method of sequencing batch reactor
JP2007501112A (en) * 2003-08-04 2007-01-25 オテヴェ・ソシエテ・アノニム Biological water treatment process and plant using activated sludge process to control aeration
WO2005068379A1 (en) * 2004-01-13 2005-07-28 Itochu Forestry Corp. Wastewater cleaning system
JPWO2005068379A1 (en) * 2004-01-13 2007-08-23 伊藤忠林業株式会社 Wastewater purification system
US7494588B2 (en) 2004-01-13 2009-02-24 Itochu Forestry Corp. Wastewater purification system
JP2009502494A (en) * 2005-08-01 2009-01-29 スエズ アンヴィロンマーン Method and apparatus for nitrogen enrichment (high nitrogen concentration) wastewater treatment in a continuous fractionation cycle biological reactor
CN103570190A (en) * 2013-10-20 2014-02-12 北京化工大学 Method for controlling feeding amount of chemical phosphorus removal reagents of water reclamation plants based on fuzzy control

Also Published As

Publication number Publication date
JP3452162B2 (en) 2003-09-29

Similar Documents

Publication Publication Date Title
US5013442A (en) Aerobic wastewater treatment with alkalinity control
JPS6369595A (en) Method and device for controlling operation in intermittent-aeration activated sludge process
JP2005125229A (en) Sewerage treatment system
JPH09122681A (en) Water quality controlling apparatus
JPH0938690A (en) Method for controlling injection of flocculating agent in water treatment
JP2002126779A (en) Sludge treatment method and apparatus used therefor
JP3388405B2 (en) Sewage treatment apparatus and method
JP3058414B1 (en) Water treatment equipment
JPH06102195B2 (en) Method for controlling phosphorus concentration in wastewater
JP2836838B2 (en) Control method of adding amount of oxidizing agent or reducing agent
JP4101349B2 (en) How to remove phosphorus in sewage
JP3376620B2 (en) Biological denitrification treatment apparatus and biological denitrification treatment method
JPH03262599A (en) Purification for removing nitrogen and phosphorus in polluted water
JPH0824515A (en) Flocculating and settling method and equipment therefor
JPH01130790A (en) Treatment of sewage
JP3690537B2 (en) Intermittent aeration
JPH09192680A (en) Treatment of water with ozone and device therefor
JP2000084585A (en) Aerator and method for controlling operation of sludge removal pump
JPH11138183A (en) Ozone inject control method in water treatment
JP3637819B2 (en) Waste water nitrification method
JPH01127098A (en) Apparatus for controlling batchwise activated sludge treatment
SU905208A1 (en) Method for controlling process of purification of iron-containing effluents
JPS63229194A (en) Method for controlling batch type drainage processing equipment
JPH03114596A (en) Apparatus for treating waste water
JPS62282694A (en) Method and apparatus for denitrification and dephosphorization of sewage

Legal Events

Date Code Title Description
R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110718

Year of fee payment: 8

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110718

Year of fee payment: 8

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313111

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130718

Year of fee payment: 10

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees