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
D u P o n t S a f e t y & C o n s t r u c t i o n
Filtration Spectrum
Internal Use Only 3
D u P o n t S a f e t y & C o n s t r u c t i o n
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
D u P o n t S a f e t y & C o n s t r u c t i o n
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
D u P o n t S a f e t y & C o n s t r u c t i o n
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
D u P o n t S a f e t y & C o n s t r u c t i o n
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
D u P o n t S a f e t y & C o n s t r u c t i o n
Ultrafiltration vs Conventional filtration technology
Internal Use Only 8
D u P o n t S a f e t y & C o n s t r u c t i o n
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
D u P o n t S a f e t y & C o n s t r u c t i o n
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)
D u P o n t S a f e t y & C o n s t r u c t i o n
Biggest Challenges Associated to Media Filters and UF comparison
Internal Use Only 11
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
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 commitment to delivering value
Internal Use Only 12
D u P o n t S a f e t y & C o n s t r u c t i o n
Value of Productivity
Internal Use Only 13
+ =
DuPont UF
Productivity
Advantage
Permeability
High Flux
and
Efficiency
Membrane Area
More Water
per Module
& Small
Footprint
D u P o n t S a f e t y & C o n s t r u c t i o n
Evolution of DuPont UF
Internal Use Only 14
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
D u P o n t S a f e t y & C o n s t r u c t i o n
What is IntegraFlux™ and Why?
Internal Use Only 15
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
D u P o n t S a f e t y & C o n s t r u c t i o n
High Permeability XP Fiber: Lower Energy & Higher Flux
Internal Use Only 16
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
D u P o n t S a f e t y & C o n s t r u c t i o n
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
D u P o n t S a f e t y & C o n s t r u c t i o n
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
D u P o n t S a f e t y & C o n s t r u c t i o n
Years of Research and Development
Internal Use Only 20
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
D u P o n t S a f e t y & C o n s t r u c t i o n
ECO PRO Membranes Value Capture
Internal Use Only 21
D u P o n t S a f e t y & C o n s t r u c t i o n
FILMTECTM ECO PRO Membranes
Internal Use Only 22
• 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
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 24
D u P o n t S a f e t y & C o n s t r u c t i o n
Innovative Concepts to Reuse and Minimize liquid waste
ZLD in the spotlight
Internal Use Only 25
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 26
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
D u P o n t S a f e t y & C o n s t r u c t i o n
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
D u P o n t S a f e t y & C o n s t r u c t i o n
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
D u P o n t S a f e t y & C o n s t r u c t i o n
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
D u P o n t S a f e t y & C o n s t r u c t i o n
South Africa Mining Wastewater– MLD system
FORTILIFE™ CR100 Elements
31Internal Use Only
D u P o n t S a f e t y & C o n s t r u c t i o n
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
D u P o n t S a f e t y & C o n s t r u c t i o n
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
D u P o n t S a f e t y & C o n s t r u c t i o n
Mining Wastewater - MLD
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
D u P o n t S a f e t y & C o n s t r u c t i o n
Mining Wastewater - MLD
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 $667 per system per cleaning provided by the plant
Internal Use Only
D u P o n t S a f e t y & C o n s t r u c t i o n
Fluoride Removal Technology
Internal Use Only 36
D u P o n t S a f e t y & C o n s t r u c t i o nInternal Use Only 37
Activity in East AfricaDuPont Social Impact Project
Project: Flouride Removal Project, Kenya
Partners: Little Sisters of St Francis (LSOSF), DuPont, Davis & Shirtliff, USAID, KIWASH
Grant Amount ($): $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
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