MX2016015693A - Planta para el tratamiento de liquido, asi como metodo para controlar tal planta. - Google Patents
Planta para el tratamiento de liquido, asi como metodo para controlar tal planta.Info
- Publication number
- MX2016015693A MX2016015693A MX2016015693A MX2016015693A MX2016015693A MX 2016015693 A MX2016015693 A MX 2016015693A MX 2016015693 A MX2016015693 A MX 2016015693A MX 2016015693 A MX2016015693 A MX 2016015693A MX 2016015693 A MX2016015693 A MX 2016015693A
- Authority
- MX
- Mexico
- Prior art keywords
- generating machine
- flow generating
- plant
- operational
- flow
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/006—Regulation methods for biological treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/234—Surface aerating
- B01F23/2342—Surface aerating with stirrers near to the liquid surface, e.g. partially immersed, for spraying the liquid in the gas or for sucking gas into the liquid, e.g. using stirrers rotating around a horizontal axis or using centrifugal force
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/20—Mixing gases with liquids
- B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
- B01F23/234—Surface aerating
- B01F23/2342—Surface aerating with stirrers near to the liquid surface, e.g. partially immersed, for spraying the liquid in the gas or for sucking gas into the liquid, e.g. using stirrers rotating around a horizontal axis or using centrifugal force
- B01F23/23421—Surface aerating with stirrers near to the liquid surface, e.g. partially immersed, for spraying the liquid in the gas or for sucking gas into the liquid, e.g. using stirrers rotating around a horizontal axis or using centrifugal force the stirrers rotating about a vertical axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
- B01F25/51—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle in which the mixture is circulated through a set of tubes, e.g. with gradual introduction of a component into the circulating flow
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
- B01F25/52—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle with a rotary stirrer in the recirculation tube
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/74—Treatment of water, waste water, or sewage by oxidation with air
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1257—Oxidation ditches
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1278—Provisions for mixing or aeration of the mixed liquor
- C02F3/1284—Mixing devices
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/14—Activated sludge processes using surface aeration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/14—Activated sludge processes using surface aeration
- C02F3/16—Activated sludge processes using surface aeration the aerator having a vertical axis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/305—Treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
- C02F2209/006—Processes using a programmable logic controller [PLC] comprising a software program or a logic diagram
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/22—O2
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/40—Liquid flow rate
-
- 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
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Activated Sludge Processes (AREA)
- Flow Control (AREA)
- Control Of Non-Electrical Variables (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
La invención se refiere a una planta y un método para controlar tal planta adecuada para el tratamiento de agua residual. La planta (1) comprende una cuenca (2) , al menos una máquina para generar flujo adaptada para generar un flujo de líquido en la cuenca (2) , a menos un equipo (7) en la cuenca (2) que lleva a cabo el momento del flujo del líquido, y una unidad de control (8). El método se caracteriza por los pasos en donde la unidad de control (8) guarda una relación predeterminada entre la velocidad operacional N de la máquina para generar flujo y un parámetro operacional P del cual puede derivarse el par de fuerza M de la máquina para generar flujo, cuya relación depende de la velocidad del flujo del líquido y predeterminada en la cuenca (2) por la máquina para generar flujo, determinar la velocidad operacional N de la máquina para generar flujo, de la velocidad operacional determinada N determinar un valor fijo del parámetro operacional P de la máquina para generar flujo con base en tal relación entre la velocidad operacional N de la máquina para generar flujo y el parámetro operacional P de la máquina para generar flujo, por medio de la unidad de control (8) determinar un valor real del parámetro operacional P de la máquina para generar flujo, y por medio de la unidad de control (8) ajustar la velocidad operacional N de la máquina para generar flujo si el valor real del parámetro operacional P de la máquina para generar flujo es diferente al valor fijo del parámetro operacional P de la máquina para generar flujo.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE1450755A SE538527C2 (sv) | 2014-06-17 | 2014-06-17 | Anläggning för behandling av vätska samt metod för styrning av en dylik anläggning |
PCT/IB2015/054499 WO2015193783A1 (en) | 2014-06-17 | 2015-06-15 | Plant for treatment of liquid as well as method for controlling such a plant |
Publications (1)
Publication Number | Publication Date |
---|---|
MX2016015693A true MX2016015693A (es) | 2017-05-30 |
Family
ID=53719800
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MX2016015693A MX2016015693A (es) | 2014-06-17 | 2015-06-15 | Planta para el tratamiento de liquido, asi como metodo para controlar tal planta. |
Country Status (18)
Country | Link |
---|---|
US (1) | US10273173B2 (es) |
EP (1) | EP3157874B8 (es) |
JP (1) | JP6462732B2 (es) |
KR (1) | KR20170018933A (es) |
CN (1) | CN106458667B (es) |
AU (1) | AU2015275757B2 (es) |
BR (1) | BR112016029400A2 (es) |
CA (1) | CA2952354A1 (es) |
CL (1) | CL2016003204A1 (es) |
DK (1) | DK3157874T3 (es) |
ES (1) | ES2728144T3 (es) |
MX (1) | MX2016015693A (es) |
MY (1) | MY179006A (es) |
PL (1) | PL3157874T3 (es) |
RU (1) | RU2705966C2 (es) |
SE (1) | SE538527C2 (es) |
SG (1) | SG11201610562UA (es) |
WO (1) | WO2015193783A1 (es) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3252018A1 (en) | 2016-05-30 | 2017-12-06 | Xylem IP Management S.à.r.l. | Method for determining flow velocity of a liquid in a treatment plant |
JP7023609B2 (ja) * | 2017-03-28 | 2022-02-22 | 株式会社Nttファシリティーズ | 汚水処理装置 |
CN113368724A (zh) * | 2020-02-25 | 2021-09-10 | 侯瑜 | 一种石油化工用的循环混合装置 |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2706078A1 (de) * | 1977-02-12 | 1978-08-17 | Basf Ag | Vorrichtung zur erhoehung der stroemungsgeschwindigkeit in umlaufgraeben von klaeranlagen |
US4280910A (en) | 1980-03-10 | 1981-07-28 | Baumann Edward J | Method and apparatus for controlling aeration in biological treatment processes |
GB2080276A (en) * | 1980-07-25 | 1982-02-03 | Hartley Simon Ltd | The treatment of effluent by aeration |
JPS5993798U (ja) * | 1982-12-13 | 1984-06-26 | 株式会社西原環境衛生研究所 | 汚水処理装置 |
US5582734A (en) * | 1993-09-14 | 1996-12-10 | H. David Stensel | Oxidation ditch modification and automated control system for nitrogen removal and sludge settling improvements |
GB9609593D0 (en) | 1996-05-08 | 1996-07-10 | Advanced Energy Monitor Syst | Pumps |
JPH1170394A (ja) * | 1997-08-29 | 1999-03-16 | Shin Meiwa Ind Co Ltd | 水中曝気攪拌装置 |
JPH11104684A (ja) * | 1997-10-07 | 1999-04-20 | Hitoshi Daidou | オキシデーションディッチ型活性汚泥処理装置 |
JP3436876B2 (ja) | 1998-01-30 | 2003-08-18 | 住友重機械工業株式会社 | オキシデーションディッチ用エアレータの制御方法 |
US6106704A (en) * | 1998-09-11 | 2000-08-22 | Aqua Partners, Ltd. | Wastewater treatment system with air pump/control panel platform |
JP2002320994A (ja) * | 2001-04-24 | 2002-11-05 | Sumitomo Heavy Ind Ltd | オキシデーションディッチの運転方法 |
SE0103371D0 (sv) | 2001-10-09 | 2001-10-09 | Abb Ab | Flow measurements |
JP3771870B2 (ja) | 2002-05-20 | 2006-04-26 | サーンエンジニアリング株式会社 | オキシデーションディッチ法による汚水処理システム |
JP4230310B2 (ja) | 2003-08-07 | 2009-02-25 | 洋 津野 | 排水処理装置及びその運転方法 |
JP4117274B2 (ja) | 2004-08-17 | 2008-07-16 | サーンエンジニアリング株式会社 | 活性汚泥方式排水処理方法及び活性汚泥方式排水処理装置 |
US7845913B2 (en) | 2004-08-26 | 2010-12-07 | Pentair Water Pool And Spa, Inc. | Flow control |
CN1915855A (zh) * | 2005-08-17 | 2007-02-21 | 汉中市城市污水处理厂 | 污水处理厂氧化沟设备运行的一种节能方法 |
JP2008246483A (ja) * | 2008-06-06 | 2008-10-16 | Nishihara Environment Technology Inc | 生物学的排水処理装置 |
RU80164U1 (ru) * | 2008-09-18 | 2009-01-27 | Виктор Иванович Баженов | Устройство для биологической очистки сточных вод |
DE102010014239B4 (de) | 2010-04-01 | 2012-09-13 | Ksb Aktiengesellschaft | Verfahren und Vorrichtung zur Herstellung von Biogas |
DE102010014240A1 (de) | 2010-04-01 | 2011-10-06 | Ksb Aktiengesellschaft | Regelung von Biogasanlagen |
DE102011114793A1 (de) | 2010-10-08 | 2012-04-12 | Rohn Gmbh | Verfahren und Anlage zur Herstellung von Biogassubstrat in Anmaischbehältern |
JP5725869B2 (ja) | 2011-01-11 | 2015-05-27 | 日本下水道事業団 | 排水処理装置及びその運転方法 |
US9011690B2 (en) | 2012-03-27 | 2015-04-21 | Ovivo Luxembourg S.a.r.l. | Orbital wastewater treatment system and associated method of operating an orbital wastewater treatment system |
-
2014
- 2014-06-17 SE SE1450755A patent/SE538527C2/sv unknown
-
2015
- 2015-06-15 RU RU2017101163A patent/RU2705966C2/ru active
- 2015-06-15 CN CN201580032330.1A patent/CN106458667B/zh active Active
- 2015-06-15 WO PCT/IB2015/054499 patent/WO2015193783A1/en active Application Filing
- 2015-06-15 JP JP2016573735A patent/JP6462732B2/ja not_active Expired - Fee Related
- 2015-06-15 DK DK15741601.7T patent/DK3157874T3/da active
- 2015-06-15 SG SG11201610562UA patent/SG11201610562UA/en unknown
- 2015-06-15 ES ES15741601T patent/ES2728144T3/es active Active
- 2015-06-15 KR KR1020177001135A patent/KR20170018933A/ko not_active Application Discontinuation
- 2015-06-15 MX MX2016015693A patent/MX2016015693A/es unknown
- 2015-06-15 BR BR112016029400A patent/BR112016029400A2/pt active Search and Examination
- 2015-06-15 US US15/318,444 patent/US10273173B2/en active Active
- 2015-06-15 MY MYPI2016704643A patent/MY179006A/en unknown
- 2015-06-15 EP EP15741601.7A patent/EP3157874B8/en active Active
- 2015-06-15 CA CA2952354A patent/CA2952354A1/en not_active Abandoned
- 2015-06-15 PL PL15741601T patent/PL3157874T3/pl unknown
- 2015-06-15 AU AU2015275757A patent/AU2015275757B2/en active Active
-
2016
- 2016-12-14 CL CL2016003204A patent/CL2016003204A1/es unknown
Also Published As
Publication number | Publication date |
---|---|
SG11201610562UA (en) | 2017-01-27 |
DK3157874T3 (da) | 2019-05-13 |
JP2017518178A (ja) | 2017-07-06 |
RU2017101163A3 (es) | 2019-01-11 |
CA2952354A1 (en) | 2015-12-23 |
AU2015275757A1 (en) | 2017-02-02 |
AU2015275757B2 (en) | 2019-10-24 |
US20170144909A1 (en) | 2017-05-25 |
MY179006A (en) | 2020-10-26 |
SE1450755A1 (sv) | 2015-12-18 |
US10273173B2 (en) | 2019-04-30 |
EP3157874B8 (en) | 2020-01-08 |
EP3157874A1 (en) | 2017-04-26 |
RU2017101163A (ru) | 2018-07-20 |
CL2016003204A1 (es) | 2017-05-05 |
KR20170018933A (ko) | 2017-02-20 |
NZ727654A (en) | 2021-01-29 |
CN106458667A (zh) | 2017-02-22 |
BR112016029400A2 (pt) | 2017-08-22 |
RU2705966C2 (ru) | 2019-11-12 |
WO2015193783A1 (en) | 2015-12-23 |
EP3157874B1 (en) | 2019-02-27 |
SE538527C2 (sv) | 2016-09-06 |
PL3157874T3 (pl) | 2019-08-30 |
JP6462732B2 (ja) | 2019-01-30 |
CN106458667B (zh) | 2020-11-27 |
ES2728144T3 (es) | 2019-10-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB2543900A (en) | Distributed big data in a process control system | |
MX364338B (es) | Configuración de flujos de trabajo en un dispositivo anfitrion que funciona en un sistema de control de procesos. | |
MX2023000906A (es) | Un aparato de purificacion de agua y un metodo para controlar por lo menos una propiedad del fluido en un aparato de purificacion de agua. | |
EP3333130A4 (en) | Water treatment system, power generation plant, and method for controlling water treatment system | |
EA201992415A3 (ru) | Система генерирования мощности и способ ее автоматического управления | |
MX2016009497A (es) | Control en red de un convertidor modular de niveles multiples. | |
GB2545860A (en) | Real-time control of drilling fluid properties using predictive models | |
MX2016015693A (es) | Planta para el tratamiento de liquido, asi como metodo para controlar tal planta. | |
PH12016502289A1 (en) | Method for controlling a pump arrangement | |
MX2016015953A (es) | Sistema y metodo de recuperacion de informacion. | |
SG10201701541SA (en) | Device and method for reinforcing control flow integrity of software application | |
EP3552682A4 (en) | WATER PURIFIER AND METHOD FOR CONTROLLING THE FLOW RATE THEREFOR | |
PH12017000097B1 (en) | Game system, server, and donation control method | |
MX2018002936A (es) | Metodos y composiciones inhibidoras de incrustacion. | |
MY194646A (en) | Method and device for controlling a hydraulically actuated drive unit of a valve | |
PH12016502425B1 (en) | Method for shutting off a pump as well as station arrangement | |
MX2013013641A (es) | Metodo y sistema de guiado mediante control por derivada. | |
FR3022356B1 (fr) | Procede et dispositif de generation d'au moins une consigne parmi une consigne de commande de vol, une consigne de commande moteur et une consigne de guidage d'un aeronef, produit programme d'ordinateur et aeronef associes | |
AU2017275530A1 (en) | Method for determining flow velocity of a liquid in a circulation channel | |
RU2010127999A (ru) | Способ уравления движением динамического объекта по пространственной траектории | |
GB2548022A (en) | Inflow control apparatus, methods,and systems | |
MX2016011097A (es) | Planta y metodo de control para tratamiento aerobico. | |
NZ618438A (en) | A timber-working device and method of operation | |
GB201802206D0 (en) | A method of generating a statistical model m to detect, or predict the risk of an outcome | |
MY193362A (en) | Method for prevention of plant nitrate poisoning and apparatus thereof |