In 2004, Pure Aqua, Inc. manufactured and supplied an industrial seawater reverse osmosis (RO) system for the Aysir Tourism Resort in Turkey.

1. Pure Aqua Supplied an Industrial Seawater RO System Aysir Tourism Resort in
Turkey
INTRODUCTION
In 2004, Pure Aqua, Inc. manufactured and supplied an industrial seawater reverse osmosis
(RO) system for the Aysir Tourism Resort in Turkey. The system consists of two
independent units with a total capacity of400m3per day of product water. The system
consists of two independent units with a total capacity of 400m3per day of product water.
Prior to Pure Aqua’s involvement, RO pilot installations had been employed on thesite
with limited success. Membranes became fouled and/or scaled, and the owners were not
convinced that the RO equipment would provide adependable long-term water supply for
the property. Shipping potable water by truck became a likely means of supplying the
resort. Background Because of the Aysir Tourism Resort’s location, city or municipal
water was not available. In addition, because of the resort’s close proximity to the
sea,well water in the area was 40,000 ppm or more TDS. It was estimated that the resort
would need as much as 400 m3per day to meet its potable and irrigation water needs. After
careful analysis of the resort’s needs and location, the technical staff of Pure Aqua,
Inc., a manufacturer and wholesale distributor of RO systems and components for industrial
and commercial applications located in Irvine, California, decided that a seawater RO was
the most effective and efficient method of obtaining the quality and quantity of water
necessary for the resort’s daily operations.
SYSTEM AND PROCESS
The feed water to the system was supplied from a beach-well with raw water TDS of about
40,000 ppm.The system design was based on high rejection TFC spiral wound membranes
with an energy recovery turbine.The seawater RO systems were selected from Pure Aqua?s
SWI Series. Each produces 200 m3per day of drinking water with TDS less than 300 mg/L.
In addition, Pure Aqua proposed enhancing pretreatment to the RO system. It was
recommended that chlorine be injected into the feed for disinfection. Acid was then added to
lower pH and minimize calcium precipitation. After media filtration, sodium bisulfite was
injected to remove residual chlorine, which if present, is harmful to RO membrane
elements. Finally,1?2 ppm antiscalant was added to the feed just prior to the cartridge
filters on the RO skids.This pretreatment scheme addressed the concerns presented by the
feed water analysis and previous pilot tests. It was also proposed that pretreatment
equipment functions should be measured / monitored by a touch panel that controlled the
RO system.The overall process is briefly described below.
PERFORMANCE

2. The desalination plant produces 2 x 200 m3per day of drinking water with TDS less than
300 mg/L from feed water with a TDS of about 40,000 mg/L at temperature range of19 to
27°C.Trials concluded that acid injection could be suspended without affecting the
operations of the plant. From its initial start-up in 2004,the plant has been running
smoothly with minimal trouble-shooting. As a result, the resort has a reliable and steady
supply of potable water at a cost far less than shipping water to the site.
About Pure Aqua, Inc.
Pure Aqua is headquartered in Santa Ana, California and is a leading manufacturer and
wholesale distributor of Reverse Osmosis systems and components. For more than a
decade, Pure Aqua has been recognized as a world leading manufacturer of water
purification systems. Pure Aqua products have earned an industry-wide reputation for their
high quality and superior performance.