Conceptual designs of integrated process for simultaneous production of potable water, electricity, and salt

Abstract The main aim of this study was to conduct preliminary analysis on the performance of two conceptual designs that integrate the production of potable water, electricity, and salt. We used reverse osmosis (RO), pressure-retarded osmosis (PRO), and electrodialysis (ED) to produce potable water, electricity, and salt, respectively. The objective of the analysis is to observe how the relative positions of RO and PRO in the integrated process affect the five key parameters, i.e. the total dissolved solids (TDS) of potable water, permeate rate, the total energy requirement of the RO and ED units, net delivered power, and salt potential. We simulated each integrated design using previously validated mathematical expressions of RO, PRO, and ED. We found that the net delivered power is higher when the RO unit is located before the PRO unit. The same sequence also results in lower energy requirement for producing potable water, although the permeate rate is smaller than that of the rival sequence. On the other hand, the salt potential is not affected by the relative positions of the RO and PRO units.

[1]  Gary L. Amy,et al.  What is next for forward osmosis (FO) and pressure retarded osmosis (PRO) , 2015 .

[2]  Gurudeo Anand Tularam,et al.  Environmental concerns of desalinating seawater using reverse osmosis. , 2007, Journal of environmental monitoring : JEM.

[3]  Toraj Mohammadi,et al.  Sea water desalination using electrodialysis , 2008 .

[4]  Mageed Jean Guirguis.  Energy Recovery Devices in Seawater Reverse Osmosis Desalination Plants with Emphasis on Efficiency and Economical Analysis of Isobaric versus Centrifugal Devices , 2011 .

[5]  H. Strathmann.  Electrodialysis, a mature technology with a multitude of new applications , 2010 .

[6]  Charles James Lemckert,et al.  Osmotic power with Pressure Retarded Osmosis: Theory, performance and trends – A review , 2014 .

[7]  R. Baker,et al.  Membranes for power generation by pressure-retarded osmosis , 1981 .

[8]  C. Stewart Slater,et al.  EXPLORING THE POTENTIAL OF ELECTRODIALYSIS , 2003 .

[9]  John P. MacHarg,et al.  Retro-fitting existing SWRO systems with a new energy recovery device☆☆☆ , 2003 .

[10]  S. M. Al-Marwani,et al.  Parametric analyses of energy consumption and losses in SWCC SWRO plants utilizing energy recovery devices , 2008 .

[11]  Takeo Honda,et al.  Comparative mechanical efficiency of several plant configurations using a pressure-retarded osmosis energy converter , 1990 .

[12]  K. Lee,et al.  MEMBRANES FOR POWER GENERATION BY PRESSURE-RETARDED OSMOSIS , 2014 .

[13]  Richard L. Stover,et al.  Seawater reverse osmosis with isobaric energy recovery devices , 2007 .

[14]  Benny D. Freeman,et al.  Reverse osmosis desalination: water sources, technology, and today's challenges. , 2009, Water research.

[15]  Jeffrey A. Ruskowitz,et al.  RO-PRO desalination: An integrated low-energy approach to seawater desalination , 2014 .

[16]  Chun Feng Wan,et al.  Energy recovery by pressure retarded osmosis (PRO) in SWRO–PRO integrated processes , 2016 .

[17]  S. Loeb,et al.  Production of energy from concentrated brines by pressure-retarded osmosis : II. Experimental results and projected energy costs , 1976 .

[18]  Sidney Loeb,et al.  Production of energy from concentrated brines by pressure-retarded osmosis , 1976 .

[19]  Andrea Achilli,et al.  Experimental results from RO-PRO: a next generation system for low-energy desalination. , 2014, Environmental science & technology.

[20]  Dong-mei Xu,et al.  Optimum design of reverse osmosis seawater desalination system considering membrane cleaning and replacing , 2006 .

[21]  Amy E. Childress,et al.  Power generation with pressure retarded osmosis: An experimental and theoretical investigation , 2009 .

[22]  Daniel Anastasio,et al.  Impact of temperature on power density in closed-loop pressure retarded osmosis for grid storage , 2015 .

[23]  S. Loeb.  Large-scale power production by pressure-retarded osmosis, using river water and sea water passing through spiral modules , 2002 .

[24]  Thomas Melin,et al.  State-of-the-art of reverse osmosis desalination , 2007 .

[25]  Joon Ha Kim,et al.  Reverse osmosis (RO) and pressure retarded osmosis (PRO) hybrid processes: Model-based scenario study , 2013 .

[26]  Andrea Achilli,et al.  Pressure retarded osmosis: From the vision of Sidney Loeb to the first prototype installation — Review , 2010 .

[27]  Oliver Paish,et al.  Small hydro power: technology and current status , 2002 .

[28]  Richard G. Fairbanks,et al.  Tropical Temperature Variations Since 20,000 Years Ago: Modulating Interhemispheric Climate Change , 1994, Science.

[29]  Ho Kyong Shon,et al.  Pressure retarded osmosis (PRO) for integrating seawater desalination and wastewater reclamation: Energy consumption and fouling , 2015 .

[30]  Iqbal M. Mujtaba,et al.  An evaluation of membrane properties and process characteristics of a scaled-up pressure retarded osmosis (PRO) process , 2016 .

[31]  G. G. Stokes.  "J." , 1890, The New Yale Book of Quotations.

[32]  S. Loeb.  Energy production at the Dead Sea by pressure-retarded osmosis: challenge or chimera? , 1998 .

[33]  Ronan K. McGovern,et al.  Hybrid electrodialysis reverse osmosis system design and its optimization for treatment of highly saline brines , 2014 .

[34]  Akshay Deshmukh,et al.  Pressure-retarded osmosis for power generation from salinity gradients: is it viable? , 2016 .