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Reaction coefficient (K) evaluation for full-scale facultative pond systems.

S R Soares1, R S Bernardes

  • 1University of Brasilia, ENCIFT, DF, Brazil. sras@tba.com.br

Bioresource Technology
|March 27, 2001
PubMed
Summary
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Facultative ponds offer economical wastewater treatment. This study establishes a regional design parameter for facultative ponds in Brazil, correlating organic load with the reaction coefficient (K) for improved domestic wastewater management.

Area of Science:

  • Environmental Engineering
  • Water Treatment Technologies
  • Wastewater Management

Background:

  • Facultative ponds are cost-effective for wastewater treatment, especially where land is affordable.
  • Existing design methods for facultative ponds offer general reaction coefficient (K) values for organic matter removal.
  • The applicability of general design coefficients in specific regional contexts requires evaluation.

Purpose of the Study:

  • To assess the suitability of general facultative pond design coefficients for regional applications.
  • To develop a region-specific design parameter for facultative ponds in Brazil.
  • To correlate applied Chemical Oxygen Demand (COD) load with the reaction coefficient (K).

Main Methods:

  • Utilized data from two full-scale facultative ponds in Brazil (Brazlandia and Samambaia).

Related Experiment Videos

  • Employed a mathematical adjustment based on the dispersed flow hydraulic model.
  • Determined the reaction coefficient (K) for organic matter removal.

    • Main Results:

    • Established a correlation between applied COD load and the reaction coefficient (K).
    • The findings suggest that regional parameters are necessary for accurate facultative pond design.
    • A specific design parameter for facultative ponds in Brazil was proposed.

    Conclusions:

    • General design coefficients for facultative ponds may not be universally applicable.
    • The study provides a valuable regional design parameter for domestic wastewater treatment in Brazil.
    • Optimized design of facultative ponds can be achieved through region-specific parameterization.