Operation Experience ARWADEX 2009

Operational Experience of “The Only”
Sea-based Desalination Plant in the World
Rami S. Abu Amirah - A.ABUNAYYAN Trading Corp.
Sanjeev Unni - Dow Water Solutions
Syed Sami Ahmed - WETICO Berkefeld Filter
April 7, 2009

Solutions for life . . . . . .

INTRODUCTION
 The Shoaiba Barge SWRO is one of Saudi Arabia’s largest Reverse
Osmosis Desalination Plant and the World’s only sea-based
desalination plant
 The Shoaiba Barge SWRO project is located 100km south of
Jeddah
 Plant consists of two Barges, each with a capacity of
26,000m3/day
 First barge has been in operation since May 2008, feeding
potable quality water to SWCC network
 Source of Raw water is from a shallow region of the Red
Sea

System Design
• Pre-treatment - Ultra Filtration
• RO Design - Two Pass
• Membranes - FILMTEC™ SW30HRLE-400i
FILMTEC™ BW30-440i
• Capacity - 52,000m3/day
• TDS - 100mg/l (second pass)
• OEM - WETICO Saudi Berkefeld

System Design
 Pass 1
 Number of Trains - 12
 Pressure Vessels - 22 per Train
 Element Type - FILMTEC™SWHRLE-400i
 Pass 2
 Number of Trains - 4
 Number of Stages - Two
 Pressure vessels - 29
 Element Type - FILMTEC™ BW30-440i

General Membranes Features
Automation
 Consistent and accurate active
surface area
 Precise and uniform glue lines
 Shorter leaves to ensure lower
fouling potential and Lower back
pressure
 Thick feed spacer to offer
performance stability against
fouling with efficient cleanability

Inter-Locking-End-Cap
 RO used patented iLEC ™ inter-locking-end-cap technology from Dow
Chemical Company.
 The iLEC “inter-locking
end cap” technology
provides one of the
highest mechanical
integrities together
with simple and faster
installation
General Membranes Features

Operation
 Since start-up, the first barge has provided
consistently high product water quality at flows
according to the specifications
 The permeate TDS of the first pass has been
consistently below 300 mg/l. This allowed the end
user to feed the full first pass product flow into the
distribution network

Operation
 Due to excellent first pass product quality, the end user
decided to operate the second pass only in an
emergency.
 Normalized data show the evolution of the plant
performance
 The second barge started on March 2009

Train 2 Normalized Permeate Flow

Train 2 Norm. Salt Passage & Rejection

Train 2 Differential Pressure

Evaluation
 RO System in Barge 1 is in operation for more almost 16
months since start-up with no Cleaning
 Very small permeate flow variation is noticed in
Normalized Permeate flow
 Salt rejection and Salt passage is consistent
 Differential Pressure slowly increased as a sign of slow
Bio-fouling
 Membrane cleaning is required to improve system
performance

When to Clean??
 Elements should be cleaned whenever the
normalized permeate flow drops by 10%
 Normalized salt passage increased by 10%
 Normalized differential pressure increased by 15%
from the reference condition established during the
first 48 hours of operation

Good Engineering, Operation &
Monitoring procedures ensure good
long-term performance of FILMTEC™
membranes.
More information available online:
http://www.abunayyantrading.com
http://www.dow.com/liquidseps/service/lm_operation.htm
http://www.dow.com/liquidseps/service/lm_clean.htm

Thank you

Operation Experience ARWADEX 2009

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