A mathematical model was developed to simulate powdered activated carbon
(PAC) adsorption of trace organic compounds from natural water in a floc blanket reactor
(FBR). The displacement effect of competing natural organic matter (NOM) on trace organic
compound adsorption was taken into account by using an adsorption capacity of the trace
organic compound that decreases with time. The model was verified with atrazine adsorption
data obtained in a pilot-scale FBR using parameters determined from bench-scale
experiments. Two types of PAC with different pore size distributions were tested. Model
simulations were conducted to demonstrate the effects of the PAC type, the PAC dose, the
carbon retention time (CRT), and the reactor size. Model simulations were performed to
determine optimal ranges of PAC doses and CRTs for both types of PACs. The performance
of the two PACs was also evaluated to provide adsorbent selection guidelines for water
utilities.
Includes 14 references, tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 300 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 7 |
| Published : | 11/01/2002 |
