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Hydraulic and Particle Size Characteristics of Some Diatomite Filter Aids
Author(s) -
Dillingham James H.,
Baumann E. Robert
Publication year - 1964
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.1551-8833.1964.tb01272.x
Subject(s) - particle size distribution , particle size , grain size , permeability (electromagnetism) , soil water , filtration (mathematics) , filter (signal processing) , materials science , mathematics , soil science , mineralogy , composite material , environmental science , geotechnical engineering , statistics , geology , engineering , chemistry , electrical engineering , paleontology , biochemistry , membrane
This study presents data pertaining to the hydraulic and particle size characteristics of commercial grades of diatomite used as filter aids. To achieve this, the specific study objectives were to: evaluate the reproducibility and relative simplicity of two ASTM methods for determining the grain size of soils when those methods are used to determine the particle size distribution of diatomite filter aids; determine the particle size distribution of different lots of commercial grades of diatomite filter aids; determine K 3 values of different grades and of different lots of the same grade of diatomite (K 3 is a constant for a given grade of diatomite at 20°C and is inversely proportional to its coefficient of permeability); and, determine whether a relationship exists between the K 3 value and particle size distribution. The determination of the permeability of diatomite filter aids in this study was confined to the evaluation of K 3 coefficients in the recently developed diatomite filtration equation. The ASTM Method for Grain Size Analysis of Soils‐Designation D422‐39 (Method 1) and ASTM Tentative Method for Grain Size Analysis of Soils ‐Designation D422‐61T (Method 2) were used in this study for determining particle size distribution.