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Method Development for Measuring Biodegradable Dissolved Organic Nitrogen in Treated Wastewater

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A method for determining biodegradable dissolved organic nitrogen (BDON) in treated wastewater was developed. The method adopts the approaches used in the biochemical oxygen demand and biodegradable dissolved organic carbon tests to make it usable as a routine procedure at wastewater treatment plants (WWTPs). The development focused on various aspects of the procedure, including inoculum type and concentration, incubation period, and the need for sample filtration after incubation. The method was tested with filtered effluent samples from two nutrient removal WWTPs and standard organic nitrogen solutions. Accurate and precise BDON results were obtained with 2 mL of acclimated mixed-liquor suspended solids diluted to a concentration of 240 mg/L as an inoculum and an incubation period of 20 days. Sample filtration after incubation was not required.
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Keywords: biodegradable dissolved organic nitrogen; determination; procedure; treated wastewater

Document Type: Research Article

Publication date: 2009-08-01

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    Water Environment Research (WER) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year.

    Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
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