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Biodegradability evaluation of wastewaters from malt and beer production
Author(s) -
Mielcarek Artur,
Janczukowicz Wojciech,
Ostrowska Kamila,
Jóźwiak Tomasz,
Kłodowska Izabella,
Rodziewicz Joanna,
Zieliński Marcin
Publication year - 2013
Publication title -
journal of the institute of brewing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.523
H-Index - 51
eISSN - 2050-0416
pISSN - 0046-9750
DOI - 10.1002/jib.92
Subject(s) - biodegradation , brewing , wastewater , activated sludge , organic matter , waste management , sewage , environmental science , pulp and paper industry , sewage treatment , chemistry , chemical oxygen demand , fermentation , environmental engineering , food science , engineering , organic chemistry
This study reports results of respirometric measurements of activated sludge biodegrading the substrate in wastewater originating from the following brewery plant production departments: malt house, brewhouse, fermentation house and racking house. The process was conducted at two temperatures: 10 and 20°C with activated sludge adapted to brewery wastewaters. The loading of activated sludge reached 0.25 g chemical oxygen demand per gram dry matter per day, which assured complete degradation of organic matter. The physicochemical characteristics of the wastewaters are provided. The study demonstrates a correlation between the site of wastewater generation, the specific character of a unitary technological process and the quality of the wastewater discharged to the sewage system, including biodegradability. Despite significant differences in the quality of the wastewaters, they were characterized by high biodegradability at a temperature of 10 and 20°C and by the C:N:P ratio being beneficial for biological treatment, irrespective of their source of origin. Copyright © 2013 The Institute of Brewing & Distilling