Claros Bedoya, JA.; Serralta Sevilla, J.; Seco Torrecillas, A.; Ferrer Polo, J.; Aguado García, D. (2011). Monitoring pH and ORP in a SHARON reactor. WATER SCIENCE AND TECHNOLOGY. 63(11):2505-2512. https://doi.org/10.2166/wst.2011.478
Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10251/28667
Title:
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Monitoring pH and ORP in a SHARON reactor
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Author:
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Claros Bedoya, Javier Alfonso
Serralta Sevilla, Joaquín
Seco Torrecillas, Aurora
Ferrer Polo, José
Aguado García, Daniel
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UPV Unit:
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Universitat Politècnica de València. Departamento de Ingeniería Hidráulica y Medio Ambiente - Departament d'Enginyeria Hidràulica i Medi Ambient
Universitat Politècnica de València. Instituto Universitario de Ingeniería del Agua y del Medio Ambiente - Institut Universitari d'Enginyeria de l'Aigua i Medi Ambient
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Issued date:
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Abstract:
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This paper analyses the valuable information provided by the on-line measurements of pH and oxidation reduction potential (ORP) in a continuous single high ammonia removal over nitrite (SHARON) reactor. A laboratory-scale ...[+]
This paper analyses the valuable information provided by the on-line measurements of pH and oxidation reduction potential (ORP) in a continuous single high ammonia removal over nitrite (SHARON) reactor. A laboratory-scale SHARON reactor equipped with pH, ORP, electric conductivity and dissolved oxygen (DO) probes has been operated for more than one year. Nitrogen removal over nitrite has been achieved by adding methanol at the beginning of anoxic stages. Time evolution of pH and ORP along each cycle allows identifying the decrease in nitritation rate when ammonia is consumed during the aerobic phase and the end of the denitrification process during the anoxic phase. Therefore, monitoring pH and ORP can be used to develop a real-time control system aimed at optimizing the length of both aerobic and anoxic stages. Real-time control of methanol addition can be carried out by using the information provided by these probes: excessive methanol addition in the anoxic stage is clearly detected in the ORP profile of the following aerobic phase, while a deficit of methanol is detected in both pH and ORP profiles of that anoxic phase. Moreover, other valuable information such as the amount of ammonia nitrified, failures in DO measurements, excessive stirring during the anoxic stage and methanol dosage in the aerobic phase was also provided by the pH and ORP profiles. © IWA Publishing 2011.
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Subjects:
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Monitoring
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ORP
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Partial nitrification
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PH
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SHARON
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Aerobic phase
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Ammonia removal
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Denitrification process
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Laboratory scale
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Nitritation
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On-line measurement
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Oxidation reduction potential
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SHARON reactor
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Time evolutions
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Ammonia
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Anoxic sediments
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Denitrification
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Dissolved oxygen
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Electric conductivity
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Methanol
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Nitrogen removal
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Oxidation
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Probes
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Real time control
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PH effects
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Anoxic conditions
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Control system
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Detection method
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Electrical conductivity
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Laboratory method
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Monitoring system
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Nitrite
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Optimization
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Oxic conditions
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Pollutant removal
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Probe
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Real time
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Redox potential
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Article
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Nitrification
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Online monitoring
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Oxidation reduction reaction
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Reactor
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Single reactor system for high activity ammonium removal over nitrite reactor
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Aerobiosis
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Anaerobiosis
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Bioreactors
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Environmental Monitoring
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Hydrogen-Ion Concentration
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Nitrites
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Oxidation-Reduction
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Waste Disposal, Fluid
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Copyrigths:
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Cerrado |
Source:
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WATER SCIENCE AND TECHNOLOGY. (issn:
0273-1223
)
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DOI:
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10.2166/wst.2011.478
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Publisher:
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IWA Publishing
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Publisher version:
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http://www.iwaponline.com/wst/06311/2505/063112505.pdf
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Project ID:
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info:eu-repo/grantAgreement/MEC//CTM2005-06919-C03-02/ES/ESTUDIO DE TECNICAS AVANZADAS DE ELIMINACION DE NITROGENO EN CORRIENTES CON ELEVADAS CONCENTRACIONES DE NITROGENO AMONIACAL/
info:eu-repo/grantAgreement/MEC//CTM2005-06919-C03-01/ES/MODELACIÓN DE LOS PROCESOS IMPLICADOS EN LA ELIMINACION DE NITROGENO EN EL SOBRENADANTE DE LA DESHIDRATACION DE FANGOS/
info:eu-repo/grantAgreement/GVA//ACOMP06%2F144/
info:eu-repo/grantAgreement/UPV//PAID-06-06/
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Thanks:
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Financial support from MCYT (project CTM2005-06919-C03/TECN), Generalitat Valenciana (ACOMP06/144), and Universidad Politecnica de Valencia (UPV-FPI grant 2008-11 and PAID-06-06) are gratefully acknowledged.
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Type:
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Artículo
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