Full Description

Use of ultrafiltration technology for drinking water treatment applications may necessitatethe incorporation of additional treatment processes in order to comply with drinking waterregulations pertaining to organic matters, taste and odor causing compounds anddisinfection byproducts in cases where difficult surface water supplies are in use. Suchan association of treatment processes can improve ultrafiltration performance. The useof multi-process treatment lines for drinking water production is also being driven by themulti-barrier concept for disinfection applications.This association of conventional coagulation/clarification and ultrafiltration treatmenttechnologies is relatively new, and has a great range of development potential. Thispaper summarizes the results of pilot-scale studies conducted to evaluate the use ofenhanced coagulation upstream of ultrafiltration treatment with a hollow fiber inside-outAquasourceTM membrane. The impact of water quality, inorganic coagulant chemistryand membrane material on ultrafiltration performance and operational parameters suchas cleaning strategy and cleaning frequency is presented.Furthermore, the pilot-scale results are compared with two years of operating data froma full-scale application currently employed at the Bexar Met drinking water plant in VonOrmy, Texas.Opportunities to optimize the treatment strategy are considered so as to evaluate thefuture development of this enhanced clarification process for surface water treatmentapplications. Includes 10 references, tables, figures.

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Edition: Vol. - No. Published: 03/05/2003 Number of Pages: 14File Size: 1 file , 490 KB