Springer Nature is making SARS-CoV-2 and COVID-19 research free. View research | View latest news | Sign up for updates

An original procedure for physical simulation of upflow anaerobic sludge blanket reactors

  • 50 Accesses

  • 5 Citations


 A procedure for sludge blanket reactors physical simulation is presented. To simulate the liquid phase, a solution of 1.0 g/l of polyvinyl alcohol provided the desired rheological behavior. Biological granules presented in UASB reactors were simulated using granules of a water absorbent acrylic polymer capable to expand up to one hundred times in volume when moistened. The biochemical reactions that produces methane and carbon dioxide in anaerobic reactors were simulated reacting nitric acid and sodium bicarbonate. This procedure differs from gas injection since the gas is produced at the reactor core as it happens in the actual situation, thus the simulation is more realistic. Flow visualization and residence time distribution measurements were used to verify if the proposed procedure acceptably simulates UASB reactors treating wastewater. All tests were performed in a 10.5 l bench scale reactor and the results allow to recommend this method whenever flow visualization and reactor physical simulation are useful for reactor design and development.

This is a preview of subscription content, log in to check access.

Author information

Additional information

Received: 11 October 1999

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Pires, E., Hanisch, W. & Andrade, M. An original procedure for physical simulation of upflow anaerobic sludge blanket reactors. Bioprocess Engineering 23, 389–395 (2000). https://doi.org/10.1007/s004499900180

Download citation


  • Sodium Bicarbonate
  • Polyvinyl Alcohol
  • Rheological Behavior
  • Flow Visualization
  • Reactor Design