Recycling of Hydroblasting Wastewater

Abstract

The objective of this project undertaken by the Naval Civil Engineering Laboratory (NCEL) is to develop a recycling technology for reducing the volume of boiler hydroblasting wastewater at Naval Shipyards by up to 90 percent. Steam boiler tubes of a Navy ship undergoing regular overhaul are cleaned twice by hydroblasting. The first washing is performed before ship overhaul and the second washing after ship overhaul. The initial feasibility study, completed in FY88, involved bench scale work at NCEL and pilot scale tests at Long Beach (LBNSY) and Norfolk Naval Shipyards (NNSY). Full scale field tests were conducted at NNSY in FY89. The wastewater recycling process consisted of five steps: collecting, settling, filtering, reconditioning, and reusing. All five steps were successfully demonstrated in the three series of field tests. These tests were assisted by and coordinated with NNSY and Naval Ship Systems Engineering Station (NAVSSES). The results show that the hydroblasting wastewater could be recycled nine times to achieve 90 percent reduction without any adverse effect.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1991
Accession Number
ADA243847

Entities

People

  • Bingham Y. Pan
  • Brian Swaidan

Organizations

  • Naval Facilities Engineering Service Center

Tags

Communities of Interest

  • Biomedical
  • Ground and Sea Platforms
  • Human Systems

DTIC Thesaurus Topics

  • Boiler Tubes
  • Chemical Synthesis
  • Chemistry
  • Civil Engineering
  • Engineering
  • Engineers
  • Environmental Protection
  • Field Tests
  • Filtration
  • High Pressure
  • Local Governments
  • Measurement
  • Particle Size
  • Sodium Compounds
  • Systems Engineering
  • Test And Evaluation
  • Test Equipment

Readers

  • Aerospace Test and Evaluation
  • Agricultural Chemistry/Soil Science
  • Naval Architecture and Marine Engineering.