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  • Title: Denitrification of a nitrate-rich synthetic wastewater using various wood-based media materials.
    Author: Healy MG, Rodgers M, Mulqueen J.
    Journal: J Environ Sci Health A Tox Hazard Subst Environ Eng; 2006; 41(5):779-88. PubMed ID: 16702058.
    Abstract:
    This laboratory study examined the use of various wood materials as a carbon source in horizontal flow filters to denitrify nitrate-nitrogen (NO3-N) from a synthetic wastewater. The filter materials were: sawdust (Pinus radiata), sawdust and soil, sawdust and sand, and medium-chip wood chippings and sand. Two influent concentrations of NO3-N, 200 mg L(-1) and 60 mg L(-1), loaded at 2.9 to 19.4 mg NO3-N kg(-1) mixture, were used. The horizontal flow filter with a wood chippings/sand mixture and an influent NO3-N concentration of 60 mg L(-1), which operated over a study duration of 166 days, performed best, yielding a 97% reduction in NO3-N at steady-state conditions.
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