nitrification Articles
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The influence of aeration rate on partial nitrification in sequencing batch reactor
Partial nitrification was investigated in Sequencing Batch Reactor (SBR) under aeration of 100, 500, 1000 and 1600 ml min−1. The biomass concentration was about 1.7 g l−1. When the ratio of alkalinity (mg l−1) to NH4+ -N (mg l−1) was 7.14 : 1, pH and DO would both increase dramatically after ammonia oxidation finished. Through monitoring and controlling the variation of pH and DO in the reactor, ...
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Simultaneous organic matter removal and nitrification of an inert self-supporting immersed media to upgrade aerated lagoons
A pilot study was performed to evaluate the potential of an inert self-supported immersed fixed film media to upgrade aerated lagoons. Simultaneous organic matter removal and nitrification was assessed under different loading rates and temperatures (near 0 °C) using 12 laboratory-scale reactors operated in parallel. Test results showed that both the temperature and the load have an influence ...
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Project - WWTP Morelia, Mexico
Plant: wwtp Morelia, Mexico Contractor: INVENT Umwelt- und Verfahrenstechnik AG Type of plant: Municipal Plant Start-up: 2006 Application: Aeration for BOD-Removal and Nitrification Scope of supply: 352 E-FLEX - Aeration Modules ...
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Project - Carrousel Nevele
AIRMAX 2000 : Replacement of old surface aerators Process : Intermittent nitrification/denitrification Gearbox with oil protection system Carrousel is a trade name of DHV ...
By KAMPS s.a.
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Project - WWTP Fersinsa, Mexico
Plant: wwtp Fersinsa Gist-Brocades, Mexico Contractor: INVENT Umwelt- und Verfahrenstechnik AG Type of plant: Industrial Plant Start-up: 2002 Application: Aeration for BOD-Removal and Nitrification Scope of supply: Engineering & Design 292 E-FLEX - Aeration Modules 6 HYPERCLASSIC - Mixers Pipeworks ...
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Project - WTP St Denis France Dairy
Process: complete mixed tank with Nitrification/denitrification Replacement of high speed aerator Low speed surface aerator AIRMAX Number: 2 Diameter: 2.3m Power: 55Kw ...
By KAMPS s.a.
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Achieving and maintaining of short-cut nitrification in a cyclic activated sludge system
A lab-scale Cyclic Activated Sludge Technology (CAST) system was operated more than 5 months to evaluate the effects of the operation mode on nitrogen removal performance and investigate a feasible method for achieving short-cut nitrification in the system. Results showed that nitrogen was removed by conventional biological nitrification and denitrification in traditional operation mode ...
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Low temperature biological phosphorus removal and partial nitrification in a pilot sequencing batch reactor system
Partial nitrification and biological phosphorus removal appear to hold promise of a cost-effective and sustainable biological nutrient removal process. Pilot sequencing batch reactors (SBRs) were operated under anaerobic/aerobic configuration for 8 months. It was found that biological phosphorus removal can be achieved in an SBR system, along with the partial nitrification process. Sufficient ...
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Project - Tank cleaning
AIRMAX floating and fully covered with heat recovery Replacement of high speed aerators HEAT RECOVERY SYSTEM Higher (de) nitrification speed ...
By KAMPS s.a.
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Influence of dissolved oxygen concentration and aeration time on nitrite accumulation in partial nitrification process
This study investigated the influence of dissolved oxygen concentration and aeration time on nitrification and nitrite accumulation in an attempt to optimize the recently developed biological-partial-nitritation process for the treatment of strong nitrogen wastewaters. Investigation of dissolved oxygen concentration on ammonium and nitrite oxidation was carried out in a batch reactor. The ...
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ENHANCING THE PERFORMANCE OF OXIDATION DITCHES
Oxidation ditches are very popular wastewater treatment processes for small to mediumsized municipalities that have to meet stringent water quality standards. Oxidation ditches provide cost-effective treatment while requiring relatively simple operational skills. Because carbonaceous BOD removal, nitrification, and de-nitrification can be accomplished within a single reactor, the process can ...
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Nitrous oxide formation during nitritation and nitrification of high-strength wastewater
The purpose of this study was to investigate the formation of nitrous oxide (N2O) in nitritation and nitrification under stable, comparable and not limiting conditions typical for treatment of high-strength wastewater. A laboratory-scale aerated chemostat was operated with reject water at different sludge retention times, achieving suppression of nitrate formation by wash-out of ...
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Project - WWTP InBev, Belgium
Plant: wwtp InBev, Belgium Contractor: INVENT Umwelt- und Verfahrenstechnik AG Type of plant: Industrial Plant Start-up: 2006 Application: Mixing & Aeration for COD-Removal, Nitrification and Denitrification in Swing Zone Scope of supply: Engineering & Design 8 HYPERCLASSIC - Mixer/Aerators in Cage Installation & Start-up ...
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Nitrogen-removal efficiency in an upflow partially packed biological aerated filter (BAF) without backwashing process
An upflow, partially packed biological aerated filter (BAF) reactor was used to remove nitrogen in the form of ammonia ions by a nitrification process that involves physical, chemical and biological phenomena governed by a variety of parameters such as dissolved oxygen concentration, pH and alkalinity. Dissolved oxygen (DO) and pH were shown to have effects on the nitrification process in this ...
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Nitrification case study
The Bay View effluent treatment plant is one of the largest wastewater treatment facilities in North West Ohio, USA. The facility is located near the mouth of the Maumee River and provides treatment for an area of about 100 square miles. About 84 square miles of this area is located within Toledo city. The population that it serves is approximately 398,000. The plant operates on a 24 hour a day, ...
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Modeling of an immobilized sludge reactor with polyethylene glycol (PEG)-pellet to remove NH4-N from groundwater
An immobilized sludge system model was developed to simulate nitrification (NH4-N → NO3-N) and denitrification (NO3-N → N2) processes in a PEG-pellet (microorganisms entrapped in polyethylene glycol (PEG)) reactor for removing NH4-N from groundwater. The nitrification and denitrification processes were described by modifying the Michaelis-Menten kinetic incorporating the factors of dissolved ...
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Systematic model development for partial nitrification of landfill leachate in a SBR
This study deals with partial nitrification in a sequencing batch reactor (PN-SBR) treating raw urban landfill leachate. In order to enhance process insight (e.g. quantify interactions between aeration, CO2 stripping, alkalinity, pH, nitrification kinetics), a mathematical model has been set up. Following a systematic procedure, the model was successfully constructed, calibrated and validated ...
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Coupling SRT Control with Aeration Control Strategies. Proceedings WEFTEC.16
Abstract: A new control strategy has been developed that integrates dynamic SRT control with ammonia-based aeration control. In this strategy, feedback control of dynamic SRT is employed which is shown to provide the most appropriate means of adjusting the waste flow rate in response to loading and operational changes. A new SRT set point controller is developed which determines the optimum set ...
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Project - WTP Industry: VACOM
Process: MBR and complete mixed tank with Nitrification/denitrification Kamps delivered: Low speed surface aerator AIRMAX, full container with ZeeWeed membrane UF, electrical cabinet , O2 management to spare energy Turnkey project Flow 15m³/h Water reuse ...
By KAMPS s.a.
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Nitrification of municipal effluents in fluidised bed reactors using immobilised microorganisms
1. The problem Existing municipal effluent treatment plants designed earlier for the BOD removal are usually not suitable for nitrification at low temperatures, because of : Small plant dimensions and low sludge age, respectively Biokinetical reasons. Consequences are that in the cases of nitrification expensive plant extensions are required. 2. Our problem solution results in Plants ...
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