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Related Experiment Videos

Elimination costs for different wastewater compounds.

A Schulz1, F Obenaus, B Egerland

  • 1Emschergenossenschaft/Lippeverband, Essen, Germany. aschulz@eglv.de

Water Science and Technology : a Journal of the International Association on Water Pollution Research
|August 21, 2003
PubMed
Summary

This study compared wastewater treatment costs, finding that chemical precipitation is generally more cost-effective for phosphorus reduction than enhanced biological removal. These findings can inform wastewater treatment plant planning decisions.

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Area of Science:

  • Environmental Engineering
  • Water Treatment Technologies
  • Wastewater Management

Background:

  • Wastewater treatment plants (WWTPs) face increasing pressure to reduce pollutant discharge.
  • Phosphorus removal is a critical aspect of wastewater treatment to prevent eutrophication.
  • Various technologies exist for phosphorus reduction, each with different cost implications.

Purpose of the Study:

  • To calculate and compare the costs associated with different wastewater and sludge compound reduction processes.
  • To evaluate the cost-effectiveness of enhanced biological phosphorus removal versus chemical precipitation for phosphorus (P) reduction.
  • To provide data that can influence planning decisions for wastewater treatment infrastructure.

Main Methods:

  • Cost calculations were performed for various treatment processes.

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  • Data were collected from 102 wastewater treatment plants belonging to Emschergenossenschaft/Lippeverband and Aggerverband.
  • A comparative analysis of enhanced biological phosphorus removal and chemical precipitation was conducted.

    • Main Results:

    • The cost per kilogram of phosphorus eliminated was generally lower for plants utilizing only chemical precipitation compared to enhanced biological phosphorus removal.
    • The study analyzed costs for reducing/eliminating various wastewater and sludge compounds.
    • Detailed cost calculation results are presented for different process types.

    Conclusions:

    • Chemical precipitation appears to be a more cost-effective method for phosphorus reduction in the studied WWTPs.
    • The findings offer valuable insights for optimizing wastewater treatment strategies and investments.
    • Further discussion on the influence of these cost calculations on planning decisions is provided.