The Innovative Energy Effective Seawater Desalination RO System with Advanced Key Technologies: Mega-ton Water System

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1 The Innovative Energy Effective Seawater Desalination RO System with Advanced Key Technologies: Mega-ton Water System Yoshinari Fusaoka, Hiromu Takeuchi, Masaru Kurihara Toray Industries, Inc., Nihonbashi-muromachi, Chuo-ku, Tokyo , Japan, Tel. +81 (3) , Yoshinari 1

2 History of desalination plant as capacity of each technology Online Capacity (m 3 /d) Cumulative ,000,000 60,000,000 50,000,000 40,000,000 RO MSF MED Online Capacity(m 3 /d) -Cumulative- Feed Water RO MSF MED TOTAL All 63,196,391 19,106,887 6,935,091 89,238,369 30,000,000 20,000,000 Desalination is approved as a national project by JFK (1961) 10,000,000 0 Toray has created under DesalData 2016 Desalination Plant Inventory A total capacity of desalination plant has been increasing. Especially RO become the main technology A larger plant would be required for the future water demand. 2

3 The World Global Desalination Market Middle East, North Africa, USA & Caribbean Sea, China, India and Australia are the main desalination Market. 3

4 Worldwide Desalination Facility by Country Saudi Arabia U. S. A. U. A. E. China Spain Kuwait Algeria Australia Qatar India Israel Oman RO MSF MED 0 5,000,000 10,000,000 15,000,000 20,000,000 Desalination Capacity (m 3 /d) Kingdom of Saudi Arabia is the most important country in worldwide desalination market. 4

5 Mega-ton Water System The Mega-ton Water System project was implemented as national research in Japan (First Program) that aimed at developing sustainable water treatment core technologies necessary for the 21 st century. The missions of Mega-ton Water System 1) energy reduction (20%), 2) water production cost reduction, 3) low environmental impact (reducing chemical for operation). The targeted capacity of the Seawater Reverse Osmosis System ( Mega-ton Water System ) is 1,000,000 m3/d. 5

6 Advanced Key Technologies Development of innovative low pressure seawater RO membrane - with micromorphology analysis of the RO membrane functional layer - development of production technology of the innovative RO membrane Investigation of the brine conversion low pressure multistage high recovery system Monitoring of water Quality on biofouling potential. -Measurement of mbfrtm (Membrane Biofilm Formation Rate) 6

7 Advanced Key Technologies Development of innovative low pressure seawater RO membrane - with micromorphology analysis of the RO membrane functional layer - development of production technology of the innovative RO membrane Investigation of the brine conversion low pressure multistage high recovery system Monitoring of water Quality on biofouling potential. -Measurement of mbfrtm (Membrane Biofilm Formation Rate) 7

8 Structure of RO Membrane and Elements Feed Water Side Functional layer Crosslinked aromatic polyamide 200 nm Surface image of RO membrane RO membrane units 200 nm Polysulfone supporting layer 45 μm non-woven Polyester fabric 100 μm Permeate Side Structure of RO membrane Structure of RO membrane element 8

9 Development History of SWRO Membranes Salt rejection [%] Better ~ ~2000 Hollow Fiber *2 2010~ ~2005 ~1990s SU SUBCM Late 1990s Early 1990s 1980s 2 nd GEN 1 st GEN 2015~20 K-440 R-440 M-440 A-400 V-440 E-440 SUFA C rd GEN 2000s 4 th GEN L ~ 5 th GEN ,000 10,000 15,000 20,000 Productivity [gpd/8-inch EL] Spiral th GEN Better Performance of seawater RO Membrane has been improved by development of membrane materials and micromorphology/ 9

10 Recent development of SWRO Membranes for conventional plant NaCl Rejection (%) K A 820M 820R 820V Test Condition : 32,000ppmNaCl, 800psi, 8%RC, 25deg-C, ph Flow (GPD) ] Typical conventional SWRO membrane has wide range of Flow and NaCl Rejection at conventional pressure (800psi). 10

11 Schematic Diagram of salt Removal and Water permeation through the Protuberance Protuberance of polyamide NaCl NaCl Na + (hydrated ) Boron (Boric acid) H 2 O H 2 O H 2 O Polymer chains of polyamide H 2 O NaCl H 2 O H 2 O H 2 O NaCl Permeate Water permeate through thin layer of polyamide protuberance. Salt and Boron are rejected by narrow pores in protuberance. 11

12 Precise Pore Size Estimation of Cross-linked Aromatic Polyamide Boron rejection [%] Positron Annihilation Lifetime Spectroscopy(PALS) e + e - Atom Molecule Pore Positron Electron e - e + e - e - e + Pore size Small Large Positron Annihilation Lifetime Short Long Confirmation of pore structure with Molecular Dynamics simulation 2 nm e - Relationship of Boron Rejection and Pore Size by PALS ホウ素除去率 (%) 孔径 (Å) Pore RO 膜孔径 size [nm] (nm) Pore size of polyamide membrane was estimated by PALS. Correlation was observed between pore size and boron rejection. Estimated as 6-8 A diameter 12

13 Technologies for Precise Estimation of Protuberant Structure Structure of protuberance was estimated by SEM and TEM with new technology. 13

14 Comparison between Conventional High pressure and Innovative Low Pressure Seawater RO Membrane Innovative SWRO membrane will achieve lower operating pressure and energy reduction. 14

15 Advanced Key Technologies Development of innovative low pressure seawater RO membrane - with micromorphology analysis of the RO membrane functional layer - development of production technology of the innovative RO membrane Investigation of the brine conversion low pressure multistage high recovery system Monitoring of water Quality on biofouling potential. -Measurement of mbfrtm (Membrane Biofilm Formation Rate) 15

16 Comparison of Flow Diagram for Conventional System and LMS LMS could reach high recovery ratio and low pressure operation comparing to conventional system. 16

17 Relationship between Feed Pressure and Feed water Concentration for Conventional System and LMS Even though higher recovery ratio, LMS could reduce 1 st stage pressure than conventional low recovery ratio system. 17

18 Comparison of Pressure and Element Flux between Conventional System and Megaton System (LMS) LMS could reduce the flux difference of each elements. 18

19 Advanced Key Technologies Development of innovative low pressure seawater RO membrane - with micromorphology analysis of the RO membrane functional layer - development of production technology of the innovative RO membrane Investigation of the brine conversion low pressure multistage high recovery system Monitoring of water Quality on biofouling potential. -Measurement of mbfrtm (Membrane Biofilm Formation Rate) 19

20 Biofilm [ATP-pg/cm 2 ] Measuring Procedure of mbfrtm Outline of measurement Result example RO membrane Biofilm collection by Sterilized Swab :mbfrtm 600 mm Column RO membrane piece in Separable Column Feed ATP Measurement Time(days) Biofilm is quantified by measuring ATP amount on the carrier Definition: mbfrtm : ATP(pg/cm2)/ Time (day) (ATP:Adenosine Triphosphate) 20

21 RO Feed-Brine DP and Biofilm Formation Trend on mbfr Monitor With Chlorination Without Chlorination Month When the mbfr of feed water was small, Differential pressure of element is keeping small value. 21

22 Guideline of Biofouling Risk with mbfr Chemical cleaning interval [y] RO Product water Brine mbfrtm column Quantitative RO chemical cleaning interval is predictable based on RO feed water mbfrtm value. 22

23 Comparison of Conventional Process and New Process proposed by Mega-ton Water System Project Conventional Process Conventional Filtration Chlorination De-chlorination Seawater HP Pump RO New Process proposed by Mega-ton Water System Project Conventional Filtration with mbfr No or minimum chlorination Seawater HP Pump RO Monitoring Point by mbfr Operation with reducing chemical and mbfrtm monitoring will contribute to stable operation of SWRO plant. 23

24 Energy Reduction by Megaton water Technology for 1,000,000m3/d plant Seawater Biofouling Monitoring Technology Low-Pressure Multi-stage SWRO System Municipal Water Seawater System Membrane * * <Seawater Conc. = 3.5%> ERD Pump Efficiency SEC Rate (%) Conventional (R=45%) Conventional Turbo 70-85% 100 Megaton (R=60%) Low-Pressure SWRO Membrane New ERD 90% 80 * Benchmark is Conventional Technologies in

25 Conclusion Innovative low pressure seawater RO membrane was designed and developed with new micromorphology analysis technology, and production technology of the RO membrane. The brine conversion low pressure multistage high recovery system (LMS) was developed and this system reached high recovery ratio (60%) at Japan sea area. Feed water monitoring system (mbfrtm) was proposed and tested. The mbfr method will contribute to reliable operation. Using these Low pressure membrane, LMS and other technology, Mega-ton Water System will realize energy reduction (20%), water production cost reduction and low environmental impact. 25

26 Production of Water Treatment Membrane in Saudi Arabia Signing of Shareholders Agreement on February 19, 2014 in Tokyo in the presence of King Salman bin Abdulaziz Al Saud, Deputy Crown Prince Mohammed bin Salman bin Abdulaziz Al Saud, and Japanese Prime Minister Shinzo Abe Toray Membrane Middle East LLC (TMME) was established in 2014 as a strategic joint venture between Abunayyan Holding (AHC), a leading water and power company group based in the Kingdom TMME is aiming at manufacturing of RO membrane elements in Saudi Arabia, and provide with membrane technology solutions to the MENA region. Copyright 2017 Toray Industries, Inc. All Rights Reserved

27 About TMME Name: Toray Membrane Middle East LLC Shareholder: Toray Membrane Europe AG : 50% Abunayyan Holding Co. (AHC) : 50% Business: RO, NF, UF and MBR Membranes Location: Dammam 3 rd Industrial Zone Capital: 45 million SAR Territory: Middle East and North Africa Function: Production, Sales, Marketing, Technical Service Evaluation Machine The Global Largest Scale Production in Dammam started its manufacturing in year 2015 Copyright 2017 Toray Industries, Inc. All Rights Reserved Factory Automated Production 27

28 Toray s Activities toward Saudi Vision Local Production 2. Exporting of High Quality Products Toray Membrane Middle East LLC (TMME) in Dammam, started production of RO Membrane Elements in June Saudization Exporting High Quality RO Membrane Elements to MENA Region 4. Supplying Water in Saudi Arabia RO Membrane Elements made in Saudi Arabia, made by Saudi Arabian Copyright 2017 Toray Industries, Inc. All Rights Reserved Many of desalination plants in Saudi Arabia started water production by using TMME RO Membrane Elements. 28

29 Thank You for your Attention 29