TY - GEN
T1 - Life cycle environmental and economic assessment of removing pharmaceuticals from source separated urine in a university community
AU - Landry, Kelly A.
AU - Boyer, Treavor H.
N1 - Publisher Copyright:
Copyright ©2016 Water Environment Federation.
PY - 2016
Y1 - 2016
N2 - Urine source separation has been proposed as a novel method to isolate pharmaceuticals at a higher concentration than wastewater for more effective removal, and thereby reduce the load of pharmaceuticals to the environment. A life cycle assessment (LCA) and was performed to evaluate the overall environmental impacts and economic costs of removing pharmaceuticals by ion-exchange from source separated urine generated annually at the University of Florida. Eight treatment scenarios were evaluated: including centralized wastewater treatment with and without an advanced ozonation process, centralized treatment of source separated urine collected by vacuum truck or vacuum sewer, decentralized treatment of source separation urine. Within source separation scenarios, landfill disposal or regeneration of spent resin was also considered. Urine source separation had 90% lower environmental impact compared with centralized wastewater treatment due to reduced potable water production for flush water, reduced electricity use at the wastewater treatment plant, and reduced nutrient discharge due to nutrient recovery by struvite precipitation. Centralized wastewater treatment upgraded with ozone had the greatest reduction in pharmaceutical toxicity, however it had the greatest total ecotoxicity due to ozone operation and infrastructure. Among source separation scenarios, decentralized treatment of urine and centralized treatment of urine collected by vacuum truck had negligible cost differences compared with centralized wastewater treatment. Whereas, urine collected by vacuum sewer and centralized treatment with ozone cost 30% more than centralized treatment without ozone. Implementation of urine source separation may provide significant environmental benefits but negligible cost savings compared with centralized wastewater treatment.
AB - Urine source separation has been proposed as a novel method to isolate pharmaceuticals at a higher concentration than wastewater for more effective removal, and thereby reduce the load of pharmaceuticals to the environment. A life cycle assessment (LCA) and was performed to evaluate the overall environmental impacts and economic costs of removing pharmaceuticals by ion-exchange from source separated urine generated annually at the University of Florida. Eight treatment scenarios were evaluated: including centralized wastewater treatment with and without an advanced ozonation process, centralized treatment of source separated urine collected by vacuum truck or vacuum sewer, decentralized treatment of source separation urine. Within source separation scenarios, landfill disposal or regeneration of spent resin was also considered. Urine source separation had 90% lower environmental impact compared with centralized wastewater treatment due to reduced potable water production for flush water, reduced electricity use at the wastewater treatment plant, and reduced nutrient discharge due to nutrient recovery by struvite precipitation. Centralized wastewater treatment upgraded with ozone had the greatest reduction in pharmaceutical toxicity, however it had the greatest total ecotoxicity due to ozone operation and infrastructure. Among source separation scenarios, decentralized treatment of urine and centralized treatment of urine collected by vacuum truck had negligible cost differences compared with centralized wastewater treatment. Whereas, urine collected by vacuum sewer and centralized treatment with ozone cost 30% more than centralized treatment without ozone. Implementation of urine source separation may provide significant environmental benefits but negligible cost savings compared with centralized wastewater treatment.
KW - Ion-exchange
KW - Life cycle assessment
KW - Life cycle costing
KW - Pharmaceuticals
KW - Urine source separation
UR - http://www.scopus.com/inward/record.url?scp=85070664541&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85070664541&partnerID=8YFLogxK
U2 - 10.2175/193864716819715554
DO - 10.2175/193864716819715554
M3 - Conference contribution
AN - SCOPUS:85070664541
T3 - WEFTEC 2016 - 89th Water Environment Federation Annual Technical Exhibition and Conference
SP - 3022
EP - 3035
BT - WEFTEC 2016 - 89th Water Environment Federation Annual Technical Exhibition and Conference
PB - Water Environment Federation
T2 - 89th Annual Water Environment Federation Technical Exhibition and Conference, WEFTEC 2016
Y2 - 24 September 2016 through 28 September 2016
ER -