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Related Experiment Videos

Struvite formation, control and recovery.

James D Doyle1, Simon A Parsons

  • 1School of Water Sciences, Cranfield University, SIMS, Bedfordshire, UK.

Water Research
|October 31, 2002
PubMed
Summary
This summary is machine-generated.

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New wastewater nutrient removal laws cause struvite scaling issues. This paper reviews struvite (MgNH4PO4 x 6H2O) formation, control, and recovery from wastewater, discussing treatment options and recovery technologies.

Area of Science:

  • Environmental Engineering
  • Water Treatment
  • Chemical Engineering

Background:

  • Recent legislation mandates nutrient removal from wastewater.
  • This has resulted in operational challenges, specifically struvite scaling.
  • Struvite (magnesium ammonium phosphate hexahydrate) precipitation is a common issue.

Purpose of the Study:

  • To review the formation mechanisms of struvite in wastewater.
  • To discuss methods for controlling struvite scaling.
  • To explore technologies for recovering struvite from waste streams.

Main Methods:

  • Literature review of struvite formation and control.
  • Analysis of existing struvite recovery technologies.
  • Discussion of treatment options for municipal wastewater and other waste streams.

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Main Results:

  • Struvite formation is linked to high concentrations of magnesium, ammonium, and phosphate.
  • Various chemical and physical methods can control struvite precipitation.
  • Several technologies exist for struvite recovery, offering potential resource value.

Conclusions:

  • Understanding struvite formation is key to managing scaling.
  • Effective control strategies can mitigate operational problems.
  • Struvite recovery presents opportunities for nutrient recycling and resource management.