Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Modelling biological nutrient removal activated sludge systems - a review.

Zhi-rong Hu1, M C Wentzel, G A Ekama

  • 1Water Research Group, Department of Civil Engineering, University of Cape Town, Rondebosch Cape Town 7701, South Africa.

Water Research
|July 2, 2003
PubMed
Summary

Developing a mathematical simulation model for external nitrification (EN) biological nutrient removal (BNR) activated sludge (ENBNRAS) systems is crucial. The study identifies key processes like anoxic growth of phosphorus accumulating organisms (PAOs) for model enhancement.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Primary sedimentation modelling with characterized setting velocity groups.

Water research·2020
Same author

Effects of metabolic uncouplers on excess sludge reduction and microbial products of activated sludge.

Bioresource technology·2015
Same author

A new general methodology for incorporating physico-chemical transformations into multi-phase wastewater treatment process models.

Water research·2015
Same author

Evaluation of the 5 and 8 pH point titration methods for monitoring anaerobic digesters treating solid waste.

Environmental technology·2014
Same author

A new absorbent by modifying walnut shell for the removal of anionic dye: kinetic and thermodynamic studies.

Bioresource technology·2014
Same author

Biodegradability of wastewater and activated sludge organics in anaerobic digestion.

Water research·2014

Area of Science:

  • Environmental Engineering
  • Wastewater Treatment Technologies
  • Biotechnology

Background:

  • External nitrification (EN) biological nutrient removal (BNR) activated sludge (ENBNRAS) systems offer significant potential for large-scale wastewater treatment.
  • Mathematical simulation models are essential tools for aiding the implementation and optimization of these ENBNRAS systems.

Purpose of the Study:

  • To select the most suitable existing simulation model as a foundation for developing a new model for ENBNRAS systems.
  • To evaluate current BNRAS simulation models against literature and ENBNRAS experimental data.

Main Methods:

  • Comparative analysis of existing BNRAS kinetic simulation models.
  • Evaluation of models against experimental observations from literature and ENBNRAS systems.

Related Experiment Videos

  • Identification of critical biological processes for accurate simulation.

    • Main Results:

    • Anoxic growth of phosphorus accumulating organisms (PAOs), including PAO denitrification and anoxic phosphorus uptake, is a crucial process for accurate modeling, incorporated in recent models.
    • Anaerobic hydrolysis of slowly biodegradable COD (SBCOD) to readily biodegradable COD (RBCOD) and COD loss significantly impact predicted performance but have associated uncertainties.
    • Existing kinetic models vary in their inclusion of essential PAO metabolic pathways.

    Conclusions:

    • The most extensively validated kinetic simulation model should be chosen as the starting point for ENBNRAS model development.
    • Omissions in the selected model should be addressed progressively by incorporating information from existing models, literature, and ENBNRAS observations.
    • Accurate modeling requires careful consideration of PAO metabolism and carbonaceous COD transformations.