DuPont Ultrafiltration...Water Treatment Customers Market Trends Increasing Regulations •Declining Water Quality ... module while lowering UF system CapEx and OpEx, when compared

S a f e t y & C o n s t r u c t i o n

Nairobi, July 2019

Phathu Mashele

DuPont Ultrafiltration

D u P o n t S a f e t y & C o n s t r u c t i o n

DuPont Water Solutions Technologies

2

The most complete portfolio in the industry today and a global presence

Ultrafiltration Reverse

Osmosis &

Nanofiltration

Ion Exchange

Resins

Electrodeionization

Untreated Water Ultrapure Water

Internal Use Only


Filtration Spectrum

Internal Use Only 3


Market Trends and Business Drivers

4

Implications

for Filtration

Manufacturers

• Improve Productivity

& Efficiency

• Treat Wide Range of

Water Quality

• Address Regulatory

Limits

• Global Presence and

Application Expertise

Water Treatment

CustomersMarket Trends

Increasing Regulations• Declining Water Quality

• Environmental Focus

• Public Health

Water Scarcity• Population Growth

• Climate Change

• Resource Constraints

Business Drivers

Reduce Cost of Water• Increase Productivity

• Increase Efficiency

• Reliable Operations

Internal Use Only


Value for Water Treatment customers

Internal Use Only 5

DOW RESTRICTED 5

Product & Application

Expertise

Global R&D

Centers

Fiber Design

and ChemistryWorld Class

Manufacturing

Productive Modules

and Skids

Customer


Fiber design and Chemistry

Internal Use Only 6

PVDF Fiber

• >6 Log Bacteria Removal

• High Permeability XP Fiber

• Low Energy, High Flux

• High Fiber Toughness, Long Lifetime

• High Tensile Strength & Elongation vs PES

Fiber Surface

Fiber Design & Chemistry

• Outside/In Tolerates Wider Turbidity Range

• High Cleaning Efficiency using Air Scouring

• 40-60% Lower Backwash vs Inside/Out Fiber

• PVDF Chemistry

• High Chlorine Tolerance Increasing NTU

Co

st

of

Wate

r ($

/m3)

Outside/In

0.7mm ID

1.3mm OD

0.03mm Pores


Reliable Large Area Modules

Internal Use Only 7

Modules and Skids

• High Productivity 51m2 & 77m2

Membrane Area Modules

• IntegraPac™ Skids Simplify Installation

and Increase Footprint Productivity

• High Module Feed Pressure Rating to 6.3 bar

Enables Direct Feed to RO

Module Design & Potting

• Optimal Potting/Fiber Interface

Minimizes Fiber Breakage

• Module Configuration Enables

Efficient Solids Removal

• Vertical Design & Outside/In Allows

Efficient Cleaning by Air Scouring


Ultrafiltration vs Conventional filtration technology

Internal Use Only 8


Advantages of UF and Media filters

Internal Use Only 9

Lower Cost and cheaper

replacement

Can be placed

Outdoors

Do not require

prefilters

Do not require a

tank

Can handle O&G

Higher Pressure &

Temp Limits

Better and consistent

Filtrate Quality

AdvantagesUF & MMF

ULTRAFILTRATION MEDIA FILTERS

LowerChemical

Consumption

Lower Cost of Effluent Treatment

LowerFootprint

Optimized RO

Performance

Easier to Operate,

Replace & Troubleshoot


Counter arguments on Media filtration

Internal Use Only 10

Lower Cost and cheaper

replacement

Can be placed

Outdoors

Do not require

prefilters

Do not require a

tank

Can handle O&G

Higher Pressure &

Temp Limits

AdvantagesMMF

While Media Filters alone might be cheaper than UF skids, the total cost of project could potentially be more expensive than when using UF skids, which are fully automated, easy to operate and easier to handle and replace. .

A low-cost cover for the UF system could suffice to protect modules from UV exposure

Pre-strainer cost is not significant in the total cost of project. In addition, cartridge filters may be avoided.

UF can withstand up to 40C and 4-6 bar, which is enough in most of the cases

MMF also suffer from clogging due to O&G and would require more frequent backwashing

UF systems can also be designed without filtrate tank (i.e. Direct-Feed UF+RO)


Biggest Challenges Associated to Media Filters and UF comparison


Subjected to filtrate quality upsets due to fluctuations in

feed qualityMay need

coagulation aid to ensure

effective removal of SS

High footprint requirements

Environmental aspects: Use of coagulants,

handling of effluent

High transportation cost due to

weight of vessel and

media

After backwash

filtrate does not meet quality criteria

UF provides constant and consistent filtrate water quality regardless feed water fluctuations

UF does not require use of polymers or coagulants for an effective removal of fine solids and particles due to its small pore size

UF uses lower Footprint and Structural requirements, has lower weight and can be pre-assembled


DuPont commitment to delivering value



Value of Productivity


+ =

DuPont UF

Productivity

Advantage

Permeability

High Flux

and

Efficiency

Membrane Area

More Water

per Module

& Small

Footprint


Evolution of DuPont UF


2006Dow Acquires

OMEX

20082860 and 2880

Modules

2012IntegraPacTM Skids

& Modules

2015IntegraFluxTM and

IntegraPacTM Modules

& Skids with XP Fiber

Industry Leading

Membrane Area

Pro

du

ctiv

ity

Industry Leading

Footprint ProductivityNext Generation in

Module Permeability


What is IntegraFlux™ and Why?


DuPont’s latest UF innovation that offers up to 30% lower TMP and produces up to 20% more flow per

module while lowering UF system CapEx and OpEx, when compared to standard products.

How did we do it?

35% higher permeability fibers than standard DuPont UF

Higher pore density, smaller pores, new PVDF fiber formulation

Same module format using proven module and skid configuration

How does this benefit customers?

• Lower Costs by Providing Solutions that:

Improve Productivity

Increase Efficiency

Leverage Existing Module and Skid Designs


High Permeability XP Fiber: Lower Energy & Higher Flux


IntegraFlux SFP-2860XP

Competitor A

• XP Provides 25% Higher Permeability

• Dow UF PVDF vs. MF PVDF

Pe

rme

ab

ilti

y(l

mh

/bar)

Accumulated Days

• Surface Water

• Turbidity 2-5 NTU

• 80 lmh Flux

+25%

• XP Fiber Provides 30% Higher Flux & Lower TMP than

Previous Generation

• Industrial Waste Water

• Turbidity 5-20 NTU

• COD 20-50 mg/l

50 lmh

60 lmh 65 lmh

50 lmh

IntegraFlux SFP-2880XP

SFP-2880

Accumulated Days

+20% Flux +30% Flux


Focus on Increasing Fiber PermeabilityImproves Productivity and Efficiency

17

• Increasing Permeability has Many Benefits:

Lower Energy (Reduced operating pressure)

Wider Process Window (Wider TMP Range available)

Higher Water Recovery/Less Waste (e.g. cleaning cycles extended)

• In case of Operating at Higher Flux:

Fewer Modules needed

Reduced Chemical Consumption (lower chemical solution volume)

Smaller BW pump, CIP pump, Blower/Compressor, CEB dosing systems, less piping, steels, etc. lower CAPEX

Internal Use Only

S a f e t y & C o n s t r u c t i o n

Nairobi, July 2019

Phathu Mashele

DuPont Reverse Osmosis


Water Efficiency Impacts Industrial User’s Bottom line

19

Brackish water

Increasingly

challenging

feed water

Seawater

Recovered

wastewater

Receiving body

More stringent

discharge

requirements

Municipal WWTP

need more from every drop

Internal Use Only


Years of Research and Development


Salt

Reje

cti

on

W

ate

r F

lux

Applied Pressure

Applied Pressure

Pre

ssu

re (

bar)

Temperature (oC)

41

45

BW RO &

NF

SW RO

82

San

ita

ry R

O &

NF

50

54

120

80

UHPRO

HT

RO


ECO PRO Membranes Value Capture



FILMTECTM ECO PRO Membranes


• ECO Membranes will increase sustainability efforts for an ECOlogical solution

• ECO Membranes will provide opportunity to save energy and chemical costs for an ECOnomicalsolution

EC

Ono

mic

al

($ o

ver

life

tim

e o

f

ele

men

t)

ECOlogical

(sustainability over the

lifetime of element)

ECOBW30

Chemical Savings

Energy Savings

OPEX OPEX

D u P o n t S a f e t y & C o n s t r u c t i o nInternal Use Only 23



Innovative Concepts to Reuse and Minimize liquid waste

ZLD in the spotlight



Zero liquid discharge (ZLD)

• Zero liquid discharge is a process that is beneficial to industrial and municipal organizations as well as the environment. It saves money and no effluent to discharge

• ZLD systems employ the most advanced wastewater treatment technologies to purify and recycle virtually all of the wastewater produced


Next Big Thing for Reverse Osmosis… Fouling Frontier

27

DOW FILMTEC™ ECO RO Elements

Dow’s response:

40% less salt passage

30%less energy

Dow’s response:

For Improved Water Availability

Reliable Operations

Low Cost Water

DOW FILMTEC™ FORTILIFE™ RO Elements

30-50% less cleaning

IncreasedWater recovery

Next Big Thing for

Reverse Osmosis…

Internal Use Only


RO/NF Membranes to Tackle Challenges of Water RecoveryDOW FILMTEC™ FORTILIFE™ Elements

28

Clean less, Recover more, Waste lessUltrafiltraion

Ion Exchange softening

FORTILIFE™ CR100

FORTILIFE™ XC70

FORTILIFE™ XC80

DOW™ UHP RO

FORTILIFE™ XC-N

Evaporator

Waste Solids

Pretreatment

TDS 0.05-1%

TDS 2-3%

TDS 6-8%

TDS 10-20%

6-8%

Purified NaCl

• Fouling resistant element • pH resistant & durable

• Fouling resistant element • Low energy • pH resistant & durable

• High monovalent ion passage• High divalent ion rejection• COD & Color rejection

• Reduces CIP frequency • Increases up-time • Long element life• Reduces CIP frequency • Reduces energy costs • Increases recovery • Long element life

• Enables brine reuse • Reduces solid waste• Low energy operation• Reduces water to evaporate

• Biofouling resistant element• pH resistant & durable

• Reduces CIP due to biofouling up to 50%• Reduce energy by up to 10% • Long element life

Features Benefits

Internal Use Only

FORTILIFE™ CR100 ElementsFewer Cleanings are in Your Future


FORTILIFE™ CR100 ElementsLowest differential pressure

30

0

0.1

0.2

0.3

0.4

0.5

0 5 10 15 20Dif

fere

nti

al P

ress

ure

(b

ar)

Average Feed-Concentrate Flow (m3/h)

FORTILIFETM CR100 elements

Current Available34 mil, 400 ft2 elements

8” 400 ft2 element with the

lowest differential pressureFORTILIFE™ CR100

Std 8” 400 ft2 RO

Internal Use Only


South Africa Mining Wastewater– MLD system

FORTILIFE™ CR100 Elements

31Internal Use Only


Mining Wastewater – MLD

32

Application: Water recovery of mining wastewater containing high metals, salts, and

organics

Problem to Solve: The existing plant was using low energy competitor membranes and the

system was operating near the upper limits of the feed pump curve. Despite cleaning,

irreversible fouling resulted in lower system recovery and high down stream brine

management costs (ZLD). Low energy membranes with more robust, fouling resistance

performance were needed.

Location: South Africa

DuPont™ Ultrafiltration

FORTILIFE™ CR100 (stage 1)

ECO Pro 400 (stage 2)

COMPETITOR BWRO-LE

(stage 1 and 2)

Feed water:

• 6000 mS/cm

• 20-25 mg/L TOC

7:4 (6); 3 trains

Internal Use Only


Mining Wastewater - MLD

33

CR100/ECO Pro system operated

at lower pressure on average CR100/ECO Pro system operated

at higher recovery on averageInternal Use Only



34

Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Feb Mar

CR100/

ECO proo ooo oo o oo o

Competitor

BWRO-LEx xx x xx xxx x x x x x

System cleaning log:

CR100/ECO Pro: 10 CIP in one year

Competitor BWRO-LE: 14 CIP in one yr

Despite operating at a higher flux and recovery the CR100/ECO

Pro system required fewer cleanings

Internal Use Only



35

Metrics Units Competitor Dow

Feed flow m3/h 67.4 81.6

Flux LMH 14.5 20.4

P(feed) bar 13.25 12.74

Stage 1 DP bar 1.20 1.04

Recovery % 54.4 60.8

CIP Per year 14 10

Metrics Units Competitor Dow

Specific Energy* kWh/m3 0.85 0.65

Energy Cost per Element** USD/year $510 $390

Cleaning Cost per Element*** USD/Element/year $141 $101

Total Savings per Element USD/year $160

*Specific Energy is calculated by normalizing both systems to operating at the same productivity and recovery

**Energy Cost assumes a cost of $0.12/kWh

***Cost of $667 per system per cleaning provided by the plant

Internal Use Only


Fluoride Removal Technology



Activity in East AfricaDuPont Social Impact Project

Project: Flouride Removal Project, Kenya

Partners: Little Sisters of St Francis (LSOSF), DuPont, Davis & Shirtliff, USAID, KIWASH

Grant Amount ($): $133,000 (KSH 13.5mm)

Challenges: High fluoride levels from borehole water intended for use in a primary & secondary school, level 5

hospital & also supply water to the community. It is estimated the about 20 million Kenyans suffer from teeth and

bone fluorosis as a result of high Fluoride levels in most water sources.

Solution: Dow’s NF technology was used to treat the water that now supplies the School, hospital and

surrounding Community

6000 Students, patients and community members have access to clean drinking water

Commissioned in June 2018

Values Feed (ppm) Permeate(ppm)

Flouride 6.78 0.81 (1.5)

TDS 1124 116

Total alkalinity 630 68.8

Temp. 27oC, Pressure 5.5 bar

Thank You

©2018 DowDuPont, The Dow Chemical Company, DuPont. All rights reserved.

®™ Trademark of DowDuPont, The Dow Chemical Company, E.I. du Pont de Nemours and Company, or their affiliates.

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DuPont Ultrafiltration...Water Treatment Customers Market Trends Increasing Regulations •Declining Water Quality ... module while lowering UF system CapEx and OpEx, when compared

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