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DURABILITY OF WOOD‐BASED versus COAL‐BASED GAC
Author(s) -
Grens Bradley K.,
Werth Charles J.
Publication year - 2001
Publication title -
journal ‐ american water works association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.466
H-Index - 74
eISSN - 1551-8833
pISSN - 0003-150X
DOI - 10.1002/j.1551-8833.2001.tb09187.x
Subject(s) - backwashing , durability , effluent , pulp and paper industry , environmental science , bituminous coal , pressure drop , waste management , coal , materials science , composite material , environmental engineering , engineering , mechanical engineering , physics , inlet , thermodynamics
Wood‐based granular activated carbon (GAC) has been used successfully both in pilot applications and in full‐scale filter applications, but its durability during backwashing has not been evaluated in a side‐by‐side study with bituminous coal‐based GAC. The objective of this study was to compare the durability of these two types of GAC when subjected to 500 cycles of backwashing with an air–water wash system. GAC durability was evaluated by measuring the change in carbon bed height, pressure drop, filter effluent water quality, and particle characteristics as a function of backwashing. The results showed that the durability of the wood‐based and the coal‐based GAC was similar throughout the duration of the study.