The objectives of this research are to compare chemical and electrocoagulation
pretreatment options for microfiltration in terms of: reduction in microfilter fouling;
enhancements in micro-filtered water quality (in terms of natural organic matter and disinfection
byproduct precursors); and, reduction in nanofiltration (NF) membrane fouling in case of
integrated membrane systems. The combination of coagulation and microfiltration (MF) or ultrafiltration (UF) has been
suggested as an effective means to maintain high permeate flux, reduce microfilter fouling, and
provide high quality product water. Conducting chemical coagulation (CC) with aluminum
or iron salts is a common pretreatment option; however, electrocoagulation (EC) is another
emerging technology. The advantages of electrocoagulation over chemical coagulation
include: no alkalinity consumption; no change in pH; eliminates the need to store and
feed highly corrosive chemicals; produces lesser sludge; and, can be easily scaled for
portable water treatment units especially during use in emergency situations. Therefore, a study
was undertaken to explore the option of coupling electrocoagulation as a pretreatment process
for surface water microfiltration. Includes 4 references.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 280 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 4 |
| Published : | 03/01/2007 |
