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Method Development for Measuring Biodegradable Dissolved Organic Nitrogen in Treated Wastewater
Author(s) -
Khan Eakalak,
Awobamise Mayo,
Jones Kimberly,
Murthy Sudhir
Publication year - 2009
Publication title -
water environment research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.356
H-Index - 73
eISSN - 1554-7531
pISSN - 1061-4303
DOI - 10.2175/106143008x370430
Subject(s) - effluent , wastewater , incubation , filtration (mathematics) , biochemical oxygen demand , chemical oxygen demand , pulp and paper industry , chemistry , sewage treatment , dissolved organic carbon , nitrogen , environmental chemistry , organic matter , nutrient , total organic carbon , environmental engineering , chromatography , environmental science , organic chemistry , mathematics , biochemistry , statistics , engineering
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.