This powerpoint presentation begins by providing a brief overview of particle size distributions. Project objective was to develop a framework for optimization of
coagulation pretreatment for low pressure
membranes on the basis of natural organic matter (NOM) removal and
the characteristics of the floc that are formed. An example of coagulation pretreatment for low pressure membranes is presented, with experimental approach including the following: develop an improved method for characterizing
fractal dimensions of floc; characterize particle size distributions and
fractal dimensions during coagulation; and, relate floc characteristics to particulate fouling
of membranes. The Coulter Counter, the DPA-4100-D Particle Analyzer, and jar testing are all discussed along with preliminary findings that indicate the following: the methodology for measuring the fractal
dimension, D3, appears sound, some difficulty in analyzing real flocs; process configuration strongly influences the
particle size distribution and morphology; flocculation leads to larger aggregates with lower
fractal dimensions; once broken by shear, flocs do not re-aggregate to the
same extent; and, NOM removal occurs early in the pretreatment
process. Includes tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 2.2 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 28 |
| Published : | 11/01/2009 |
