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Biotreatment of s ‐triazine‐containing wastewater in a fluidized bed reactor
Author(s) -
Hogrefe W.,
Grossenbacher H.,
Cook A. M.,
Hütter R.
Publication year - 1986
Publication title -
biotechnology and bioengineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.136
H-Index - 189
eISSN - 1097-0290
pISSN - 0006-3592
DOI - 10.1002/bit.260281016
Subject(s) - fluidized bed , wastewater , chemistry , residence time (fluid dynamics) , hydraulic retention time , pulp and paper industry , nitrogen , chromatography , carbon source , carbon fibers , triazine , microorganism , chemical oxygen demand , waste management , environmental science , environmental engineering , materials science , organic chemistry , bacteria , biology , biochemistry , geotechnical engineering , composite number , engineering , composite material , genetics
Mixed cultures of microorganisms immobilized on sand were used to degrade s ‐triazine‐containing industrial wastewater in a fluidized bed reactor. Immobilized cell concentrations of up to 18 g/L volatile suspended solids could be achieved with the s ‐triazines as sole nitrogen source for growth and carbon sources added at a CN ratio of about 12. Maximal removal efficiencies of 80% of the s ‐triazines could be maintained only if (a) the bio‐film thickness was limited to avoid oxygen deficiency and (b) the carbon source and complete wastewater (⩽50% v/v in the feed) were supplied continuously at a mean hydraulic residence time of ≥20–25 h.