Optimization of Suspended Solids Removal from Coal-Ash Laden Wastewaters

Abstract

Wastewater resulting from the drawing down of ash from coal-fired boilers contains a significantly high concentration of suspended solids requiring treatment prior to release into sanitation lines for treatment at municipal wastewater treatment plants. As an example, the steam plant at the Naval Amphibious Base Little Creek in Norfolk, Virginia is experiencing high surcharges from the Hampton Roads Sanitation District (HRSD) for the high concentration of suspended solids in their wastewater. At present, there are no mechanisms in place to pre-treat this wastewater prior to its discharge into HRSD. The purpose of this project is to analyze the effectiveness of various coagulant aids in the removal of suspended solids from the ash-laden wastewater. In addition, the effectiveness of an anionic polymer in response to changes in pH, velocity gradients of flocculation, and various top/bottom ash water mixtures was analyzed.

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Document Details

Document Type
Technical Report
Publication Date
Jun 14, 1991
Accession Number
ADA250838

Entities

People

  • Gary Schafran

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Adsorption
  • Bottom Waters
  • Chemical Analysis
  • Chemistry
  • Engineering
  • Environmental Engineering
  • Fly Ash
  • Mixing
  • Operating Systems
  • Optimization
  • Particle Size
  • Particles
  • Particulate Matter
  • Plug-In Electric Vehicles
  • Sanitation
  • Water
  • Water Purification

Fields of Study

  • Environmental science

Readers

  • Coastal Oceanography
  • Environmental Engineering.