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Biodegradable dissolved organic carbon for indicating wastewater reclamation plant performance and treated wastewater quality
Author(s) -
Khan Eakalak,
Babcock Roger W.,
Viriyavejakul Sarunyu,
Suffet Irwin H.,
Stenstrom Michael K.
Publication year - 1998
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 - 10.2175/106143098x123363
Subject(s) - effluent , wastewater , dissolved organic carbon , sewage treatment , chemistry , biochemical oxygen demand , reclaimed water , water quality , total organic carbon , environmental chemistry , chemical oxygen demand , environmental engineering , environmental science , ecology , biology
Various methods for measuring biodegradable dissolved organic carbon (BDOC) in water have been introduced in the last decade. Applications of the methods have been limited to drinking water. The measure of BDOC has been used mainly to indicate the quality of raw and finished waters and evaluate the performance of biological activated carbon (ozone/granular activated carbon) systems in water treatment plants. Recently, a modified BDOC protocol was developed for examining reclaimed and secondary‐treated wastewaters. Use of the new BDOC method can be extended to the wastewater treatment and reclamation fields. Samples collected from a wastewater reuse pilot facility were tested for BDOC. The modified BDOC method was able to detect the increase in biodegradability of ozonated tertiary‐treated wastewater. Good relationships among BDOC, dissolved organic carbon (DOC), and soluble biochemical oxygen demand were obtained. The modified protocol was later used to measure BDOC in secondary‐effluent samples from 13 municipal wastewater treatment plants. The results show that BDOC can also be used as an indicator of secondary‐effluent quality. Likewise, strong and significant correlations were found among BDOC, DOC, and soluble chemical oxygen demand in secondary effluents.