Pulsed arc electrohydraulic discharge (PAED) is a direct plasma technology that effectively
treats a range of contaminants broader than those of other conventional and emerging water
treatment technologies. A review of the literature has indicated that PAED offers advantages
over indirect plasma methods in that it can cost-effectively provide comparable or superior
treatment of microorganisms, algae, volatile organics, nitrogenous municipal waste compounds,
and some inorganics. Moreover, these benefits may be available concurrently from one
technology. Also reported in the literature, preliminary investigations conducted with a limited
number of target compounds have indicated that effective water treatment with PAED utilizes
less than 50% of the kilowatt-hours required by other plasma technologies (e.g., UV) for
equivalent levels of treatment. In this paper, plasma technologies are briefly reviewed with a
focus on PAED efficacy and disinfection mechanisms. Preliminary data from laboratory-scale
investigations of E. coli inactivation by PAED are presented and indicate that 2.6-, 3.3-, and 3.6-
log E. coli inactivation can be achieved after the respective application of 6, 18, and 30
electrohydraulic discharges (corresponding to detention times of approximately 0.8, 1.5, and 5.8
minutes respectively). Includes 14 references, tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 330 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 10 |
| Published : | 11/02/2003 |
