Changes in the Biochemical Oxygen Demand Procedure in the 21st Edition of Standard Methods for the Examination of Water and Wastewater
The dilution biochemical oxygen demand (BOD) test has widespread application for design and operation of wastewater treatment processes, evaluating the quality of natural waters, and assessing the effect of wastewater discharges on these waters. While standardization of the BOD-measuring method has become of prime importance in maintaining dependable data acquisition, changes are made as needed in response to questions raised by analysts and to accommodate new applications. The purpose of this article is to describe changes that have been incorporated in the 20th and 21st editions of Standard Methods for the Examination of Water and Wastewater (APHA et al., 1998 and 2004). These changes include changes in text format to clarify the procedural steps, allowance for use of bottle sizes ranging from 60 mL or larger, improvements in quality-control procedures, and improvements in the method of calculating BOD. Other changes include allowance for the use of allylthiourea for nitrification inhibition and broadening the source of seed that can be used for inoculation of BOD samples.
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Document Type: Research Article
Publication date: 2005-07-01
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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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