Enhanced Heterotrophic Denitrification for the Treatment of Nitrate Contaminated Groundwater by Wheat Straw

Abstract:

The method of the heterotrophic denitrification remediation of nitrate-polluted groundwater involves the study of organic carbon sources as electron donor. The aim of the present study was to evaluate wheat straw for its ability to enhance denitrification in column experiments. The inlet concentration was 50.0 mgNO₃^--N/L and the column operated at the flow rate of 2.0 ml/min. The result showed that in the presence of wheat straw, highly reducing conditions were generated and complete removal of nitrate (>95%) was achieved, with less accumulation of nitrite. Consequently, wheat straw is an attractive carbon source for groundwater denitrification.

• Periodical: Applied Mechanics and Materials (Volumes 316-317)
• Pages: 625-628
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.316-317.625
• Online since: April 2013
• Authors: Jian Mei Zhang, Chuan Ping Feng, Si Qi Hong, Hui Ling Hao
• Keywords: Ground Water, Heterotrophic Denitrification, Nitrate, Wheat Straw

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