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Related Experiment Videos

Nutrient removal and sludge production in the coagulation-flocculation process.

M I Aguilar1, J Sáez, M Lloréns

  • 1Department of Chemical Engineering, University of Murcia, Spain.

Water Research
|July 31, 2002
PubMed
Summary

This study investigated nutrient removal and sludge reduction in slaughterhouse wastewater using coagulation-flocculation. Coagulant aids significantly decreased sludge volume while achieving high phosphorus removal.

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Area of Science:

  • Environmental Science
  • Water Treatment Engineering
  • Chemical Engineering

Background:

  • Slaughterhouse effluent presents significant environmental challenges due to high nutrient loads.
  • Effective wastewater treatment is crucial to mitigate pollution and comply with environmental regulations.

Purpose of the Study:

  • To evaluate the efficacy of different coagulants and coagulant aids in nutrient removal from slaughterhouse wastewater.
  • To assess the impact of these agents on sludge production.

Main Methods:

  • Coagulation-flocculation process optimization using ferric sulfate, aluminum sulfate, and polyaluminium chloride.
  • Investigation of inorganic and synthetic polyelectrolyte coagulant aids.
  • Performance measurement of nutrient removal (phosphorus, ammonia nitrogen, albuminoid nitrogen) and sludge volume reduction.

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Main Results:

  • Near-complete removal of orthophosphate (approx. 100%) and high total phosphorus removal (98.93-99.90%).
  • Limited removal of ammonia nitrogen, but significant albuminoid nitrogen removal (73.9-88.77%).
  • Coagulant aids reduced sludge volume by up to 41.6%.

Conclusions:

  • Coagulation-flocculation is highly effective for phosphorus removal from slaughterhouse effluent.
  • Coagulant aids are beneficial for minimizing sludge production during wastewater treatment.
  • Further research may be needed to improve ammonia nitrogen removal efficiency.