Floc structural characteristics are fundamental to the efficient removal of organic material at water
treatment works. Assessment of floc structure can therefore be an important tool in determining
operational performance at the waterworks. Floc size, strength and settlement characteristics were
assessed for three coagulant doses using an iron based coagulant. Size and strength was determined
using conventional light microscopy and an on-line laser diffraction technique. Settlement
characteristics were measured using a settling column with a CCD video camera and image analysis
software. Significant differences in floc size, strength and settlement were observed using the above
techniques. The coagulant dose as used by the waterworks at the time of abstraction gave the best
floc structure. Complex interactions occur between organic material and coagulant during the
coagulation process and floc structure is likely to be determined by the ratio of organic matter and
coagulant within the floc structural mass. Includes 17 references, tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 660 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 12 |
| Published : | 11/02/2003 |
