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Biodegradation of Toilet Wastewaters Generated in Aircrafts
Author(s) -
MorenoAndrade Iván,
Moreno Gloria,
Kumar Gopalakrishnan,
Buitrón Germán
Publication year - 2014
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201300648
Subject(s) - chemistry , effluent , wastewater , biodegradation , pulp and paper industry , chemical oxygen demand , acclimatization , activated sludge , bioreactor , suspended solids , sewage treatment , waste management , environmental chemistry , environmental engineering , environmental science , ecology , organic chemistry , engineering , biology
Wastewater generated in buses and aircrafts are known as blue water due to the addition of blue chemical products to deodorize, sanitize and break down solid waste in tank holdings. The blue water at high concentration presents inhibitory effects on microorganisms making difficult their treatment. This research evaluates the acclimation and degradation of aircraft blue water using discontinuous and continuous bioreactors. Acclimation was conducted in batch mode. In a discontinuous biological process with an initial COD concentration of 1150 mg COD/L, the removal efficiency was higher than 80% as COD, TOC and BOD 5 . Total Suspended Solids in the effluent were lower than 60 mg/L. In the continuous activated sludge system an initial concentration of 850 mg COD/L of blue wastewater was applied. Here, removal efficiencies up to 72 and 88% as COD and BOD5 were obtained, respectively. For both processes, the application of punctual high concentration of blue water resulted in decrease of removal efficiency (< 40%).