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Occurrence and composition of particulates in filter process streams
Author(s) -
Brant Jonathan A.,
Koyuncu Ismail,
Lecoanet Hélène,
Veerapaneni Srinivas Vasu,
Wiesner Mark
Publication year - 2011
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.1551-8833.2011.tb11580.x
Subject(s) - particulates , effluent , streams , filtration (mathematics) , filter (signal processing) , composition (language) , water treatment , fraction (chemistry) , chemistry , mass fraction , environmental chemistry , water quality , particle size , pulp and paper industry , environmental science , environmental engineering , chromatography , computer network , ecology , linguistics , statistics , mathematics , philosophy , organic chemistry , computer science , engineering , computer vision , biology
The objective of this work was to provide an in‐depth analysis of the particulate composition of influent and effluent streams for granular media filters at full‐scale water treatment plants. Findings from these analyses were evaluated with respect to the design and operation of the treatment system and the water qualities involved. On a mass basis, inorganic and organic materials in the filter influent and effluent streams were predominantly present in the submicron‐size fraction (defined here as particles with diameters between 30 and 450 nm), regardless of whether direct or conventional filtration was used. However, variability in results from the different facilities indicated that water quality and treatment type significantly influenced the size distribution of organic and inorganic materials. On the basis of a mass concentration, the inorganic composition of the particulate‐size fractions was largely hardness cations, silica, and organics, plus residual amounts of iron and/or aluminum.