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Indianapolis, IN, United States

Bayart J.-B.,Veolia | Worbe S.,Veolia | Grimaud J.,Veolia Water North America | Aoustin E.,Veolia
International Journal of Life Cycle Assessment | Year: 2014

Purpose: Along with climate change-related issues, improved water management is recognized as one of the major challenges to sustainability. However, there are still no commonly accepted methods for measuring sustainability of water uses, resulting in a recent proliferation of water footprint methodologies. The Water Impact Index presented in this paper aims to integrate the issues of volume, scarcity and quality into a single indicator to assess the reduction of available water for the environment induced by freshwater uses for human activities. Methods: The Water Impact Index follows life cycle thinking principles. For each unit process, a volumetric water balance is performed; water flows crossing the boundaries between the techno-sphere and environment are multiplied by a water quality index and a water scarcity index. The methodology is illustrated on the current municipal wastewater management system of Milan (Italy). The Water Impact Index is combined with carbon footprint to introduce multi-impact thinking to decision makers. The Water Impact Index is further compared to results obtained using a set of three life cycle impact indicators related to water, from the ReCiPe life cycle impact assessment (LCIA) methodology. Results and discussion: Onsite water use is the main contribution to the Water Impact Index for both wastewater management schemes. The release of better quality water is the main driver in favour of the scenario including a wastewater treatment plant, while the energy and chemicals consumed for the treatment increase the indirect water footprint and carbon footprint. Results obtained with the three midpoint indicators depict similar tendencies to the Water Impact Index. Conclusions: This paper presents a simplified single-indicator approach for water footprinting, integrating volume, scarcity and quality issues, representing an initial step toward a better understanding and assessment of the environmental impacts of human activities on water resources. The wastewater treatment plant reduces the Water Impact Index of the wastewater management system. These results are consistent with the profile of the three midpoint indicators related to water from ReCiPe. © 2014 Springer-Verlag. Source

Yarlott M.W.,Veolia Water North America
28th Center for Chemical Process Safety International Conference 2013, CCPS - Topical Conference at the 2013 AIChE Spring Meeting and 9th Global Congress on Process Safety | Year: 2013

Veolia Water North America contracted for the technically difficult Biosolids handling process Design, Build, Operate project with the Metropolitan Water Reclamation District of Greater Chicago at the Stickney Water Reclamation Plant. The plant design uses a high temperature oil to operate the Biosolids drying equipment. Several other plants using a similar high temperature oil system have had fires related to leakage of the oil. Having successfully employed the RCM analysis at many of Veolia's projects world wide, Veolia applied the RCM process to gain improvements in the overall reliability of the plant, and particularly the high temperature oil system, by optimizing maintenance strategies and identifying spare parts, procedures, and plans to maximize the uptime of the system. The RCM process resulted in identification of 425 spare parts at a cost of $525,000 which mitigated over $33 million dollars worth of potential risk. For a very technical process with significant risk of failures, the value of a complete RCM study will have a very high return on investment.. Source

Blair B.D.,University of Wisconsin - Milwaukee | Crago J.P.,University of Wisconsin - Milwaukee | Hedman C.J.,University of Wisconsin - Madison | Treguer R.J.F.,Veolia Water North America | And 3 more authors.
Science of the Total Environment | Year: 2013

Current wastewater treatment processes are insufficient at removing many pharmaceutical and personal care products (PPCPs) from wastewater and it is necessary to identify the chemical characteristics that determine their fate. Models that predict the fate of various chemicals lack verification using in situ data, particularly for PPCPs. BIOWIN4 is a quantitative structure-activity relationship (QSAR) model that has been proposed to estimate the removal of PPCPs from wastewater, but data verifying the accuracy of its predictions is limited. In this study, the in situ soluble and suspended solid concentrations were assessed from raw influent, primary effluent, secondary effluent, and final effluent for 54 PPCPs and hormones over six dates. When assessing the removal efficiency across the different stages of the WWTP, the majority of the removal occurred across the secondary treatment process for the majority of the compounds. The primary treatment and disinfection process had limited impacts on the removal of most PPCPs. Sorption to solids was found to influence the removal for compounds with a log octanol-water partitioning coefficient greater than 4.5 across the secondary treatment process. For other compounds, the removal of PPCPs across the secondary treatment process was significantly correlated with the biodegradation predicted by BIOWIN4. Removal efficiencies across the aerobic secondary treatment process were predicted by integrating BIOWIN4 into pseudo-first order kinetics of PPCPs and these predicted values were compared to the in situ data. This study determines that under a certain set of operating conditions, two chemical characteristics - the expected hydrophobic interaction and the modeled biological degradation from BIOWIN4 - were found to predict the removal of highly degradable and recalcitrant PPCPs from a wastewater secondary treatment process. © 2012 Elsevier B.V. Source

Lundberg L.A.,Veolia Water North America
Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA | Year: 2010

With increased emphasis on productive use of renewable resources, it is important to understand the potential for energy recovery from the processing of biosolids generated at a wastewater treatment plant. A discussion on options for deriving energy from biosolids covers methane-rich biogas produced by anaerobic digestion; technologies available for generating power from anaerobic digester gas; gasification systems that process wood and other biomass fuels; combination or hybrid systems; comparative energy balances for alternatives; relative energy recovery efficiency; operational characteristics; emerging technologies; and practical limitations, advantages and disadvantages will be reviewed. This is an abstract of a paper presented at the 103rd Air and Waste Management Association Annual Conference and Exhibition (Calgary, Alberta, Canada 6/22-25/2010). Source

Yarlott M.W.,Veolia Water North America
AIChE Annual Meeting, Conference Proceedings | Year: 2011

Subjective Risk analysis has been a key component of Veolia Water North America's successful strategy to identify and manage physical system risk since 2003. The strategy is based on sound principals that tap into the capacity of humans to accurately assess risk on well defined and specific situations. Using this principal, along with a facilitated procedure to divide physical processes into functional systems, identifying system failure scenarios, and rating those scenarios, Veolia has been able to quickly prioritize where to invest capital funds, purchase critical spares, develop safety/emergency planning, and prioritize work to mitigate risk at plants across North America. Source

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