TY - JOUR
T1 - Characterization of soluble microbial products as precursors of disinfection byproducts in drinking water supply
AU - Liu, Jin lin
AU - Li, Xiao yan
AU - Xie, Yue feng
AU - Tang, Hao
N1 - Funding Information:
This study was supported by grant SEG-HKU10 from the University Grants Council (UGC) , grant HKU714811E from the Research Grants Council (RGC) of the Hong Kong SAR Government , and funding for SRT on sustainable water from The University of Hong Kong . The technical assistance of Mr. Keith C.H. Wong is highly appreciated.
PY - 2014/2/15
Y1 - 2014/2/15
N2 - Water pollution by wastewater discharge can cause the problem of disinfection byproducts (DBPs) in drinking water supply. In this study, DBP formation characteristics of soluble microbial products (SMPs) as the main products of wastewater organic biodegradation were investigated. The results show that SMPs can act as DBP precursors in simulated wastewater biodegradation process. Under the experimental conditions, stabilized SMPs had DBPFP (DBP formation potential) yield of around 5.6μmolmmol-1-DOC (dissolved organic carbon) and DBP speciation profile different from that of the conventional precursor, natural organic matter (NOM). SMPs contained polysaccharides, proteins, and humic-like substances, and the latter two groups can act as reactive DBP precursors. SMP fraction with molecular weight of <1kDa accounted for 85% of the organic carbon and 65% of the DBP formation. As small SMP molecules are more difficult to remove by conventional water treatment processes, more efforts are needed to control wastewater-derived DBP problem in water resource management.
AB - Water pollution by wastewater discharge can cause the problem of disinfection byproducts (DBPs) in drinking water supply. In this study, DBP formation characteristics of soluble microbial products (SMPs) as the main products of wastewater organic biodegradation were investigated. The results show that SMPs can act as DBP precursors in simulated wastewater biodegradation process. Under the experimental conditions, stabilized SMPs had DBPFP (DBP formation potential) yield of around 5.6μmolmmol-1-DOC (dissolved organic carbon) and DBP speciation profile different from that of the conventional precursor, natural organic matter (NOM). SMPs contained polysaccharides, proteins, and humic-like substances, and the latter two groups can act as reactive DBP precursors. SMP fraction with molecular weight of <1kDa accounted for 85% of the organic carbon and 65% of the DBP formation. As small SMP molecules are more difficult to remove by conventional water treatment processes, more efforts are needed to control wastewater-derived DBP problem in water resource management.
UR - http://www.scopus.com/inward/record.url?scp=84890328345&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84890328345&partnerID=8YFLogxK
U2 - 10.1016/j.scitotenv.2013.11.139
DO - 10.1016/j.scitotenv.2013.11.139
M3 - Article
C2 - 24342087
AN - SCOPUS:84890328345
SN - 0048-9697
VL - 472
SP - 818
EP - 824
JO - Science of the Total Environment
JF - Science of the Total Environment
ER -
