Understanding the influence of climate change on the embodied energy of water supply.

The current study aims to advance understandings on how and to what degree climate change will affect the life cycle chemical and energy uses of drinking water supply. A dynamic life cycle assessment was performed to quantify historical monthly operational embodied energy of a selected water supply system located in northeast US. Comprehensive multivariate and regression analyses were then performed to understand the statistical correlation among monthly life cycle energy consumptions, three water quality indicators (UV254, pH, and water temperature), and five climate indicators (monthly mean temperature, monthly mean maximum/minimum temperatures, total precipitation, and total snow fall). Thirdly, a calculation was performed to understand how volumetric and total life cycle energy consumptions will change under two selected IPCC emission scenarios (A2 and B1). It was found that volumetric life cycle energy consumptions are highest in winter months mainly due to the higher uses of natural gas in the case study system, but total monthly life cycle energy consumptions peak in both July and January because of the increasing water demand in summer months. Most of the variations in chemical and energy uses can be interpreted by water quality and climate variations except for the use of soda ash. It was also found that climate change might lead to an average decrease of 3-6% in the volumetric energy use of the case study system by the end of the century. This result combined with conclusions reached by previous climate versus water supply studies indicates that effects of climate change on drinking water supply might be highly dependent on the geographical location and treatment process of individual water supply systems.

[1]  R. Wilby,et al.  A review of the potential impacts of climate change on surface water quality , 2009 .

[2]  Berit Arheimer,et al.  Climate change impact on water quality: model results from southern Sweden. , 2005, Ambio.

[3]  R. Frischknecht,et al.  Implementation of Life Cycle Impact Assessment Methods. ecoinvent report No. 3, v2.2 , 2010 .

[4]  V. Schmalz,et al.  Adsorption of dissolved organic matter onto activated carbon--the influence of temperature, absorption wavelength, and molecular size. , 2005, Water research.

[5]  P. Sen,et al.  Introduction to bivariate and multivariate analysis , 1981 .

[6]  M. Elimelech,et al.  The Future of Seawater Desalination: Energy, Technology, and the Environment , 2011, Science.

[7]  Simon Judd,et al.  Influence of backwashing, flux and temperature on microfiltration for wastewater reuse , 2012 .

[8]  J. Mihelcic,et al.  Embodied energy comparison of surface water and groundwater supply options. , 2011, Water research.

[9]  Menachem Elimelech,et al.  Colloidal Fouling of Reverse Osmosis Membranes: Measurements and Fouling Mechanisms , 1997 .

[10]  David R. Anderson,et al.  Model selection and multimodel inference : a practical information-theoretic approach , 2003 .

[11]  J. Georgiadis,et al.  Science and technology for water purification in the coming decades , 2008, Nature.

[12]  Valentina Lazarova,et al.  Water-Energy Interactions in Water Reuse , 2012 .

[13]  E. Friedrich,et al.  Life-cycle assessment as an environmental management tool in the production of potable water. , 2002, Water science and technology : a journal of the International Association on Water Pollution Research.

[14]  P. Barlow,et al.  Saltwater intrusion in coastal regions of North America , 2010 .

[15]  A. V. Vecchia,et al.  Global pattern of trends in streamflow and water availability in a changing climate , 2005, Nature.

[16]  J. Neter,et al.  Applied Linear Regression Models , 1983 .

[17]  Chris Buckley,et al.  Carbon footprint analysis for increasing water supply and sanitation in South Africa: a case study , 2009 .

[18]  Roland Schmidt,et al.  Climate-driven pH control of remote alpine lakes and effects of acid deposition , 1992, Nature.

[19]  B. Bates,et al.  Climate change and water. , 2008 .

[20]  J. Zwolsman,et al.  Climate change and effects on water quality: a first impression. , 2005, Water science and technology : a journal of the International Association on Water Pollution Research.

[21]  I. Delpla,et al.  Impacts of climate change on surface water quality in relation to drinking water production. , 2009, Environment international.

[22]  John C. Crittenden,et al.  Life cycle assessment of three water supply systems: importation, reclamation and desalination. , 2009 .

[23]  R Core Team,et al.  R: A language and environment for statistical computing. , 2014 .

[24]  J. Talley,et al.  Effects of temperature and chemical addition on the formation of bromoorganic DBPs during ozonation. , 2005, Water research.

[25]  K. Georgakakos,et al.  Quantifying the Urban Water Supply Impacts of Climate Change , 2007 .

[26]  Ralph A. Wurbs,et al.  Modeling the Impacts of Climate Change on Water Supply Reliabilities , 2002 .

[27]  Kyoung-Woong Kim,et al.  The relationship of climatic and hydrological parameters to surface water quality in the lower Mekong River. , 2008, Environment international.

[28]  Alan C. Brent,et al.  Environmental life cycle assessment of water supply in South Africa: The Rosslyn industrial area as a case study , 2007 .

[29]  Yujun Ma,et al.  Water and Energy Conservation of Rainwater Harvesting System in the Loess Plateau of China , 2013 .

[30]  Weiwei Mo,et al.  Energy-water nexus analysis of enhanced water supply scenarios: a regional comparison of Tampa Bay, Florida, and San Diego, California. , 2014, Environmental science & technology.

[31]  Kerry J. Howe,et al.  Fouling of microfiltration and ultrafiltration membranes by natural waters. , 2002, Environmental science & technology.

[32]  M. Kaika.  The Water Framework Directive: A New Directive for a Changing Social, Political and Economic European Framework , 2003 .

[33]  D. Yates.  WatBal: an integrated water balance model for climate impact assessment of river basin runoff , 1996 .

[34]  M. V. Vliet,et al.  Impact of summer droughts on the water quality of the Meuse river , 2008 .

[35]  Gregory M Peters,et al.  Life cycle assessment for sustainable metropolitan water systems planning. , 2004, Environmental science & technology.

[36]  H. Zou.  The Adaptive Lasso and Its Oracle Properties , 2006 .

[37]  Weiwei Mo,et al.  Measuring the embodied energy in drinking water supply systems: a case study in the Great Lakes region. , 2010, Environmental science & technology.

[38]  Peter H. Gleick,et al.  The development and testing of a water balance model for climate impact assessment: Modeling the Sacramento Basin , 1987 .

[39]  D. Pierson,et al.  Investigating the impact of climate change on New York City’s primary water supply , 2013, Climatic Change.

[40]  J Clauson-Kaas,et al.  Life cycle assessment of three water systems in Copenhagen--a management tool of the future. , 2011, Water science and technology : a journal of the International Association on Water Pollution Research.

[41]  Radhika Vidanage De Silva,et al.  Water is an economic good: How to use prices to promote equity, efficiency, and sustainability , 2002 .

[42]  T. Barnett,et al.  Potential impacts of a warming climate on water availability in snow-dominated regions , 2005, Nature.

[43]  D. Hewitt,et al.  The impact of climate change on the physical characteristics of the larger lakes in the English Lake District , 2007 .

[44]  A. Horvath,et al.  Energy and air emission effects of water supply. , 2009, Environmental science & technology.

[45]  G. Schwarz.  Estimating the Dimension of a Model , 1978 .

[46]  E. G. Bekele,et al.  Watershed Modeling to Assessing Impacts of Potential Climate Change on Water Supply Availability , 2010 .

[47]  Mark V. E. Santana,et al.  Influence of water quality on the embodied energy of drinking water treatment. , 2014, Environmental science & technology.

[48]  W. Kruskal.  Relative Importance by Averaging Over Orderings , 1987 .

[49]  Bryan W. Karney,et al.  Life-Cycle Energy Use and Greenhouse Gas Emissions Inventory for Water Treatment Systems , 2007 .

[50]  Thorsten Blenckner,et al.  Lake phosphorus dynamics and climate warming: A mechanistic model approach , 2006 .

[51]  J. Houghton,et al.  Climate Change 2013 - The Physical Science Basis: Working Group I Contribution to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change , 2014 .

[52]  C. Vandecasteele,et al.  Separation of monovalent and divalent ions from aqueous solution by electrodialysis and nanofiltration. , 2004, Water research.

[53]  J. Berkoff.  China: The South-North Water Transfer Project— is it justified? , 2003 .

[54]  D. Conway,et al.  Greenhouse-gas emissions from energy use in the water sector , 2011 .

[55]  Kerry J. Howe,et al.  MWH's Water Treatment: Principles and Design , 2012 .

[56]  P. Hunter.  Climate change and waterborne and vector‐borne disease , 2003, Journal of applied microbiology.

[57]  Ulrike Groemping,et al.  Relative Importance for Linear Regression in R: The Package relaimpo , 2006 .

[58]  Albert Germain,et al.  Life Cycle Assessment of Water: From the pumping station to the wastewater treatment plant (9 pp) , 2007 .

[59]  J. Zwolsman,et al.  Impact of summer droughts on water quality of the Rhine River - a preview of climate change? , 2007, Water science and technology : a journal of the International Association on Water Pollution Research.

[60]  Heather N Bischel,et al.  Management experiences and trends for water reuse implementation in Northern California. , 2012, Environmental science & technology.

[61]  E. Baltas,et al.  Regional impacts of climate change on water resources quantity and quality indicators , 2000 .