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A model for the filterability of activated sludge supported by mixed‐liquor biochemical data
Author(s) -
Novak R. A.
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.260281207
Subject(s) - activated sludge , mixed liquor suspended solids , chemistry , pulp and paper industry , wastewater , waste management , sewage treatment , dewatering , sewage sludge , environmental science , chromatography , environmental engineering , engineering , geotechnical engineering
A predictive model was developed to estimate the dewatering characteristics of waste‐activated sludges. This model utilizes the COD‐nitrogen ratio of the wastewater and the organic loading rate of the process to predict sludge filterability in terms of specific resistance. A completely mixed, continuous flow secondary treatment process with solids recycle was used for the cultivation of activated sludges. The sludge wasted from this process was used in Buchner funnel specific resistance determinations. The basic concepts involved in the development of the model were supported by sludge carbohydrate, protein, and surface charge data.