Aqwise`s poster at the 2008 Weftec convention - Distribution of microbial population within a moving bed bio-film reactor (MBBR) combining a `denitrfiltration` unit

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Introduction
  • At high influent N levels , there is a need in Pre- and Post (Endogenous)-denitrification stages, requiring addition of an external electron donor.
  • Systems based on the MBBR (Moving Bed Bio-film Reactor) process have high potential for treating domestic and industrial wastewater.
  • Among process advantages: Elimination of sludge recirculation, Efficient ammonia and organic matter removal & Easy M&O.
  • Disadvantage – poor sludge sedimentation properties and poor effluent clarification.
  • The pilot was necessary before a full-scale 3,200 m3/day Denitrifiltration plant construction in Israel.

Objectives

  • Specify optimal conditions for endogenous denitrification using AGAR® technology, while maintaining low effluent levels of SS and N.
  • Defining the microbial population prevailing in the system.

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