the innovative energy effective seawater desalination ro...

Yoshinari Fusaoka, Hiromu Takeuchi, Masaru Kurihara

Toray Industries, Inc., 2-1-1 Nihonbashi-muromachi, Chuo-ku, Tokyo 103-8666, Japan,

Tel. +81 (3) 3245 4878,

E-mail:Yoshinari [email protected]

The Innovative Energy Effective

Seawater Desalination RO System

with Advanced Key Technologies:

“Mega-ton Water System”

1

0

10,000,000

20,000,000

30,000,000

40,000,000

50,000,000

60,000,000

70,000,000

1960

1962

1964

1966

1968

1970

1972

1974

1976

1978

1980

1982

1984

1986

1988

1990

1992

1994

1996

1998

2000

2002

2004

2006

2008

2010

2012

2014

2016

RO

MSF

MED

On

line

Ca

pa

city

(m

3/d

) –C

um

ula

tive

-

Desalination is approved as a national project by JFK (1961)

Online Capacity(m3/d) -Cumulative-

Feed Water RO MSF MED TOTAL

All 63,196,391 19,106,887 6,935,091 89,238,369

History of desalination plant as capacity

of each technology

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

Toray has created under DesalData 2016 Desalination Plant Inventory

The World Global Desalination Market

Middle East, North Africa, USA & Caribbean Sea, China,

India and Australia are the main desalination Market.

3

0 5,000,000 10,000,000 15,000,000 20,000,000

Oman

Israel

India

Qatar

Australia

Algeria

Kuwait

Spain

China

U. A. E.

U. S. A.

Saudi Arabia

Desalination Capacity (m3/d)

RO

MSF

MED

Worldwide Desalination Facility by Country

Kingdom of Saudi Arabia is the most important country

in worldwide desalination market.

4

• 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.

“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 21st century.

5

• 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)

Advanced Key Technologies

6


RO membrane









Formation Rate)


7

Feed WaterSide

Functional layer

Structure of RO membrane element

Structure of RO membranePermeate

Side

Crosslinked aromatic polyamide

200 nm

non-wovenPolyester fabric

100 μm

Polysulfone supporting layer

45 μm

Surface image of RO membrane

200 nm

RO membrane units

Structure of RO Membrane and Elements

8

100.0

99.9

99.8

99.7

99.6

99.5

99.4

99.3

99.2

99.1

99.00 5,000 10,000 15,000 20,000

Productivity [gpd/8-inch EL]

Sa

ltre

jecti

on

[%]

1980s

Early1990s

Late1990s

2000s

2010~

1st GEN2nd GEN

3rd GEN

4th GEN

5th GEN6th GEN

2015-20

HollowFiber*2

Spiral

~2000

2005~

2015~20Better

Better

R-440V-440

L-440

E-440

M-440

2010~

~2005A-400

K-440

SU~1990sSUFA C-400SUBCM

Development History of SWRO Membranes

Performance of seawater RO Membrane has been improved

by development of membrane materials and micromorphology/9

Flow (GPD)

99.70

99.75

99.80

99.90

6000 8000 10000 12000

Na

Cl R

eje

ctio

n (

%)

820A

820V 820M

99.85820K

820R

14000

Test Condition :

32,000ppmNaCl,

800psi, 8%RC,

25deg-C, pH8

[ @440ft2 ]

Recent development of SWRO Membranes for

conventional plant

Typical conventional SWRO membrane has wide range of

Flow and NaCl Rejection at conventional pressure (800psi).

10

H2O

Na+ (hydrated )Boron (Boric acid)

Polymer chains of polyamide

Permeate

H２OH２O

H２OH２O

H２OH２O

H２OH２O

H２OH２O

H２O

NaClNaClNaClNaCl

NaClNaCl

NaClNaCl

Permeate

Protuberanceof polyamide

Schematic Diagram of salt Removal and

Water permeation through the Protuberance

Water permeate through thin layer of polyamide protuberance.

Salt and Boron are rejected by narrow pores in protuberance.

11

Positron Annihilation Lifetime Spectroscopy(PALS)

Pore size Small LargePositron AnnihilationLifetime

Short Long

AtomMolecule

Pore

Positron

Electron

e+

e-

e+e+

e-

e-

e-

e-

Estimated as 6-8 A diameter

Confirmation of pore structure withMolecular Dynamics simulation

2 nm

RO膜孔径（nm）

88

90

92

94

96

98

5.0 6.0 7.0孔径 (Å)

ホウ

素除

去率

（％

）

Pore size [nm]

Boro

n r

eje

ctio

n [

%]

Relationship of Boron Rejection and Pore Size by PALS

Precise Pore Size Estimation of Cross-linked

Aromatic Polyamide

･Pore size of polyamide membrane

was estimated by PALS.

･Correlation was observed between

pore size and boron rejection.

12

Technologies for Precise Estimation of

“Protuberant Structure”

Structure of protuberance was estimated by SEM and TEM with new technology . 13

Comparison between Conventional High

pressure and Innovative Low Pressure

Seawater RO Membrane

Innovative SWRO membrane will achieve

lower operating pressure and energy reduction.14


RO membrane









Formation Rate)


15

Comparison of Flow Diagram for Conventional

System and LMS

LMS could reach high recovery ratio

and low pressure operation comparing to conventional system.16

Relationship between Feed Pressure and Feed water

Concentration for Conventional System and LMS

Even though higher recovery ratio, LMS could reduce 1st stage

pressure than conventional low recovery ratio system. 17

Comparison of Pressure and Element Flux between

Conventional System and Megaton System (LMS)

LMS could reduce the flux difference of each elements.18


RO membrane









Formation Rate)


19

60

0 m

m

Result example

Time(days)

Bio

film

[ATP-p

g/c

m2]

0 2 4 6 8 10

⊿：mBFRTM

Outline of measurement

Feed

RO membrane piece

in Separable Column

Biofilm collection

by Sterilized Swab

ATP

Measurement

Column

RO membrane

Measuring Procedure of mBFRTM

Biofilm is quantified by measuring ATP amount on the carrier

→ Definition: mBFRTM : ⊿ATP(pg/cm2)/ Time (day)

(ATP：Adenosine Triphosphate)

20

0 2 4 6

Month

With Chlorination

Without Chlorination

RO Feed-Brine DP and Biofilm Formation

Trend on mBFR Monitor

When the mBFR of feed water was small, Differential pressure

of element is keeping small value.

21

Ch

em

ica

l cle

an

ing

in

terv

al

[y]

RO

Product water

Brine

mBFRTM column

Guideline of Biofouling Risk with mBFR

Quantitative RO chemical cleaning interval is predictable

based on RO feed water mBFRTM value.

22

No or minimum chlorination

Conventional Filtration

HP Pump ROChlorination

Conventional Filtration with mBFR

Seawater

Conventional Process

De-chlorination

Monitoring Point by “mBFR”

Seawater HP Pump RO

New Process proposed by “Mega-ton Water System” Project

Comparison of Conventional Process and

New Process proposed by “Mega-ton Water

System” Project

Operation with reducing chemical and mBFRTM monitoring will

contribute to stable operation of SWRO plant.23

Seawater

Low-Pressure Multi-stage SWRO

System

Biofouling Monitoring Technology

MunicipalWater

System<Seawater Conc. = 3.5%>

Membrane ERDPump

Efficiency

SEC Rate

(%)

Conventional (R=45%) Conventional Turbo 70-85% 100

Megaton (R=60%)Low-Pressure

SWRO MembraneNew ERD 90% 80

* Benchmark is Conventional Technologies in 2010.

* *

Seawater

Energy Reduction by Megaton water

Technology for 1,000,000m3/d plant

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• 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.

Conclusion

25

Copyright 2017 Toray Industries, Inc. All Rights Reserved

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.

Production of Water Treatment Membrane in Saudi Arabia


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 3rd Industrial Zone

Capital: 45 million SAR

Territory: Middle East and North Africa

Function: Production, Sales, Marketing, Technical Service

About TMME

The Global Largest Scale Production in Dammam started its manufacturing in year 2015

Factory Automated ProductionEvaluation Machine

27


Toray’s Activities toward Saudi Vision 2030

28

Toray Membrane Middle East LLC (TMME) in Dammam, started production of RO Membrane Elements in June 2015

Exporting High Quality RO Membrane Elements to MENA Region

1. Local Production 2. Exporting of High Quality Products

3. Saudization

RO Membrane Elements made in Saudi Arabia, made by Saudi Arabian

4. Supplying Water in Saudi Arabia

Many of desalination plants in Saudi Arabia started water production by using TMME RO Membrane Elements.

Thank You for your Attention

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the innovative energy effective seawater desalination ro...

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