Treatment of hazardous shipyard wastewater using dolomitic sorbents

Gavin Walker, Julie-Anne Hanna, Stephen Allen

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

Hazardous shipyard wastewater is a worldwide problem, arising from ship repair. In this study an experimental programme was undertaken to establish the suitability of dolomite and dolomitic sorbent materials to remove contaminants from wastewater arising from a commercial shipyard. Experimental data indicate that dolomite and dolomitic sorbents have the ability to significantly reduce the COD concentration of the shipyard effluent (98% reduction). The data gained from trials at a shipyard indicated that the dolomite treatment process could be undertaken in a 8000 L pilot scale reaction vessel. Analysis of the wastewater using ICP-MS during the pilot trial indicated that the dolomite significantly reduced the concentrations of metallic impurities. The concentration of Sn ions, which is indicative of organo-tin complexes commonly found in shipyard wastewater, was reduced by 80% from its initial concentration in the pilot trial. The mechanism for the removal process using dolomite has been ascribed to a metal complexation/sorption process.
Original languageEnglish
Pages (from-to)2422-2428
Number of pages7
JournalWater Research
Volume39 (11)
Issue number11
DOIs
Publication statusPublished - Jun 2005

ASJC Scopus subject areas

  • Earth-Surface Processes

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