Biofiltration can be an effective drinking water treatment process when ozonation
is practiced beforehand. The objectives and therefore the designs of these two
processes are usually not related to biological treatment goals, and no effort
has been made to determine the compatibility of the goals of these integrated
treatment processes. The optimal application of ozone (O3) for disinfection is
the minimum dose that provides a target level of microorganism inactivation. This
dose was equivalent to the optimal O3 dose for biological treatment, defined as
the minimum dose that would achieve the maximum relative BDOCrapid removal.
Additionally, the O3 process is limited with respect to controlling the formation
of BDCOrapid. Increasing the O3 dose beyond the optimal dose will result in
little additional BDOCrapid formation, little additional release of biodegradable
dissolved organic carbon to the distribution system, and an increase in the cost
of operation. A conceptual approach for optimizing the O3 and biofiltration
processes for biological treatment objectives is described for three case
studies. The results indicate that biological treatment goals can be satisfied to
a large degree while simultaneously meeting other drinking water treatment
objectives such as disinfection and particle removal. Includes 21 references, tables, figures.
| Edition : | Vol. 93 - No. 1 |
| File Size : | 1
file
, 180 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 11 |
| Published : | 01/01/2001 |
