AWWA WQTC65928

At many production locations worldwide, a low-cost ceramic membrane drinking water treatment systemis produced called the ceramic silver-impregnated pot filter (CSF). The objective of this study was to gatherperformance data and characterize the filter material using high-tech methods from membranetechnology. The performed research indicated that CSF efficiently removes total coliforms, sulfitereducing Clostridium spores and E.coli K12. It was shown that there is no need for the application ofsilver in CSF concerning Clostridium spores (surrogate for Cryptosporidium removal). However, theremoval of E.coli K12 was slightly better by the CSF system with silver. MS2 bacteriophages were onlypartially removed from the water, with significantly better results for filters without an impregnation ofcolloidal silver. The effective pores in the filter material were measured to be around 40 µm, which islarger than most pathogens. Hence, high tortuosities in the filter material contributed to the efficientphysical removal of indicator organisms. The main deficiency of CSF proved to be the low waterproduction which was insufficient to provide drinking water for a family. Includes 9 references, table, figures.

Product Details

Edition:

Vol. - No.

Published:

11/01/2007

Number of Pages:

7

File Size:

1 file , 210 KB