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AuthorMetcalfe, D.
AuthorRockey, C.
AuthorJefferson, B.
AuthorJudd, S.
AuthorJarvis, P.
Available date2015-12-15T06:52:45Z
Publication Date2015-12
Publication NameWater Research
CitationMetcalfe, David et al. "Removal of disinfection by-product precursors by coagulation and an innovative suspended ion exchange process", Water Research, Volume 87, 15 December 2015, Pages 20-28. Available online September 2015
AbstractThis investigation aimed to compare the disinfection by-product formation potentials (DBPFPs) of three UK surface waters (1 upland reservoir and 2 lowland rivers) with differing characteristics treated by (a) a full scale conventional process and (b) pilot scale processes using a novel suspended ion exchange (SIX) process and inline coagulation (ILCA) followed by ceramic membrane filtration (CMF). Liquid chromatography-organic carbon detection analysis highlighted clear differences between the organic fractions removed by coagulation and suspended ion exchange. Pretreatments which combined SIX and coagulation resulted in significant reductions in dissolved organic carbon (DOC), UV absorbance (UVA), trihalomethane and haloacetic acid formation potential (THMFP, HAAFP), in comparison with the SIX or coagulation process alone. Further experiments showed that in addition to greater overall DOC removal, the processes also reduced the concentration of brominated DBPs and selectively removed organic compounds with high DBPFP. The SIX/ILCA/CMF process resulted in additional removals of DOC, UVA, THMFP, HAAFP and brominated DBPs of 50, 62, 62, 62% and 47% respectively compared with conventional treatment.
SponsorSouth West Water, Exeter, U.K.
PublisherElsevier Ltd
SubjectCeramic membrane filtration
Disinfection by-products
Ion exchange
Natural organic matter
TitleRemoval of disinfection by-product precursors by coagulation and an innovative suspended ion exchange process
Volume Number87

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