TY - JOUR
T1 - Disinfection of synthetic and real municipal wastewater effluent by flow-through pulsed UV-light treatment system
AU - Uslu, Gulsad
AU - Demirci, Ali
AU - Regan, John M.
N1 - Funding Information:
This research was supported by The Scientific and Technological Research Council of Turkey (TUBITAK) and the Pennsylvania Agricultural Experiment Station. We are thank to the Xenon Corp., Wilmington, Mass., U.S.A. for providing technical assistance for the pulsed UV system, and to Alex Roll in the Department of Civil and Environmental Engineering of the Pennsylvania State University for providing assistance with COD and TOC analyses.
Publisher Copyright:
© 2016 Elsevier Ltd.
PY - 2016/4/1
Y1 - 2016/4/1
N2 - This study was undertaken to characterize the efficacy of flow-through pulsed UV light for inactivation of Escherichia coli and Bacillus subtilis spores in synthetic (SMWE) and real municipal wastewater effluent (RMWE). The results show that complete inactivation was observed with a 10 L/min flow rate for E. coli and 6 L/min flow rate for B. subtilis using one-pass pulsed UV treatment and SMWE. For two-pass treatment, complete inactivation was observed in SMWE with a 16 L/min flow rate for E. coli and 10 L/min flow rate for B. subtilis. On the other hand, complete inactivation was observed with 10 L/min flow rate treatments for E. coli in RMWE, whereas 4.15 Log reduction was observed at 6 L/min for B. subtilis in RMWE for one pass. The raw wastewater was also treated under flow-through pulsed UV light at 10 L/min flow rate and complete inactivation was observed. The treatment resulted in significant chemical oxygen demand (COD) and total organic carbon (TOC) reductions. These results clearly indicate that pulsed UV not only successfully disinfects the wastewater effluent, but also reduces the organic load of municipal wastewater effluent. Therefore, pulsed UV technology can be an alternative for chlorine and conventional UV light for municipal wastewater effluent.
AB - This study was undertaken to characterize the efficacy of flow-through pulsed UV light for inactivation of Escherichia coli and Bacillus subtilis spores in synthetic (SMWE) and real municipal wastewater effluent (RMWE). The results show that complete inactivation was observed with a 10 L/min flow rate for E. coli and 6 L/min flow rate for B. subtilis using one-pass pulsed UV treatment and SMWE. For two-pass treatment, complete inactivation was observed in SMWE with a 16 L/min flow rate for E. coli and 10 L/min flow rate for B. subtilis. On the other hand, complete inactivation was observed with 10 L/min flow rate treatments for E. coli in RMWE, whereas 4.15 Log reduction was observed at 6 L/min for B. subtilis in RMWE for one pass. The raw wastewater was also treated under flow-through pulsed UV light at 10 L/min flow rate and complete inactivation was observed. The treatment resulted in significant chemical oxygen demand (COD) and total organic carbon (TOC) reductions. These results clearly indicate that pulsed UV not only successfully disinfects the wastewater effluent, but also reduces the organic load of municipal wastewater effluent. Therefore, pulsed UV technology can be an alternative for chlorine and conventional UV light for municipal wastewater effluent.
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U2 - 10.1016/j.jwpe.2016.02.004
DO - 10.1016/j.jwpe.2016.02.004
M3 - Article
AN - SCOPUS:84959036519
SN - 2214-7144
VL - 10
SP - 89
EP - 97
JO - Journal of Water Process Engineering
JF - Journal of Water Process Engineering
ER -