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Related Experiment Videos

Combined nitrification/denitrification in a membrane reactor.

B Walter1, C Haase, N Räbiger

  • 1IUV-Institute of Environmental Process Engineering, University of Bremen, P.O. Box 33 04 40, 28334 Bremen, Germany.

Water Research
|July 8, 2005
PubMed
Summary

This study presents a novel membrane-tube-module (MSM) reactor for simultaneous nitrification and denitrification in wastewater treatment. The system effectively removes nitrogen from high-concentration influents, even under partial load conditions.

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Area of Science:

  • Environmental Engineering
  • Microbiology
  • Biotechnology

Background:

  • Increasingly strict wastewater regulations necessitate advanced nitrogen removal technologies.
  • Existing biological treatment plants face challenges with high influent nitrogen concentrations and partial load operation.
  • Simultaneous nitrification and denitrification (SND) is a key goal for efficient biological wastewater treatment.

Purpose of the Study:

  • To develop and evaluate a novel membrane-tube-module (MSM) reactor for simultaneous nitrification and denitrification.
  • To assess the system's performance with both synthetic and real industrial wastewater.
  • To model the biofilm system for optimized biological nitrogen removal.

Main Methods:

  • Construction and implementation of a membrane-tube-module (MSM) reactor.

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  • Utilizing the full depth of the biofilm for integrated biological processes.
  • Testing with synthetic wastewater and effluents from animal carcass recycling and coke-oven plants.
  • Development of a mathematical model and simulation using AQUASIM software.

    • Main Results:

    • The MSM reactor demonstrated successful simultaneous nitrification and denitrification.
    • Effective nitrogen removal was achieved even with high influent concentrations and under partial load.
    • The system proved viable for real industrial wastewater applications.
    • A validated mathematical model was developed to describe the biofilm system's performance.

    Conclusions:

    • The developed MSM reactor offers an efficient solution for biological nitrogen removal from challenging wastewaters.
    • The ability to perform simultaneous nitrification and denitrification in a single biofilm enhances treatment efficiency.
    • The system's adaptability to real industrial effluents highlights its practical applicability.