Posts Tagged ‘Industrial Sea Water Reverse Osmosis’

Pure Aqua Supplied an Industrial Seawater RO System Aysir Tourism Resort in Turkey

Pure Aqua Supplied an Industrial Seawater RO System Aysir Tourism Resort in Turkey

Pure Aqua Supplied an Industrial Seawater RO System Aysir Tourism Resort in Turkey

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 toPure 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 & 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. Itwas 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.

Pretreatment of raw water includes:

  • Chlorination to prevent bacterial growth in piping
  • Acid injection to prevent calcium precipitation
  • Filtration using conventional media filters to reduce suspended solids (SS) to 10-micron size
  • Dechlorination by addition of sodium bisulfite to remove Free Chlorine in the feed water
  • Antiscalant injection to prevent membrane fouling.

The pretreatment was adopted inconjunction with the RO equipment. The seawater RO units consist ofthe following:

  • Feed and backwash pumps
  • 5-micron cartridge filters to reduce feed water silt density index (SDI) and to limit the SS to 5-micron size
  • Seawater RO membranes feed high pressure pumps
  • TFC spiral wound membranes to reduce the TDS from 40,000 mg/L to less than 300 mg/L
  • Seawater RO flushing and clean-ing system to maintain the membrane performance
  • Touch-screen programmable logic control-based control panel
  • Energy recovery turbine (recovering up to 35% ofthe energy consumption) and variable frequency drive.

Performance

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.

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Industrial Sea Water Reverse Osmosis (SWRO)

Industrial Sea Water Reverse Osmosis (SWRO) Singapore Yacht Club

Industrial Sea Water Reverse Osmosis (SWRO)

Reverse Osmosis also known as hyper filtration, is used to purify water and remove salts and other impurities. It is also capable of rejecting bacteria, sugars, proteins, dyes, and other constituents.

Introduction

In December 2006, Pure Aqua successfully supplied 3 X 50TPD 440V/3Ph/60Hz & 6 X 30TPD 415V/3Ph/50Hz customized Industrial Sea Water Reverse Osmosis systems to the Singapore Yacht Club.

Systems & Process

Feed water to the system is from sea water, TDS of about 35,000 PPM. The SW-13K-1380 & SW-8.0K-1280 Sea Water Reverse Osmosis systems were modified from our SWI Series.

Pre-treatment of raw water includes media filtration to remove suspended solids down to 25 microns and antiscalant dosing to prevent fouling the membranes.

The Seawater Reverse Osmosis (SWRO) units consist of 5-micron cartridge filters to reduce feed water Silt Density Index (SDI) and to limit the SS to 5 microns. The unit also has an advanced microprocessor with permeate water divert option and fresh water flush.

Performance

The SW-13K-1380 SWRO system was designed to produce 50cmd and the SW-8.0K-1280 SWRO was designed to produce 30cmd, both at 35,000 ppm feed TDS. Since the time of its start-up in February 2007, the plants have been running smoothly with minimal trouble-shooting.

Industrial Sea Water Reverse Osmosis Unit

Industrial Sea Water Reverse Osmosis

INTRODUCTION

In January 2009, Pure Aqua supplied 2x200m3/day Industrial Sea Water Reverse Osmosis (SWRO) Unit to a major treatment company in Azerbaijan. The complete SWRO Units were completed with advanced PLC, colored touch panel screen, prechlorination, multi media filters, antiscalant dosing, dechlorination dosing, post chlorination, cleaning and flushing system,

SYSTEMS & PROCESS

Feed water to the system is from sea water, TDS of about 25,000 PPM. The SW-52K-4480 Sea Water Reverse Osmosis Units were selected from our SWI Series.

Pre-treatment of raw water includes filter feed and backwash pumps, variable frequency drive and all necessary equipment to run the system smoothly.

Each of the Seawater Reverse Osmosis Units consists of (2) FRP Protec pressure vessels, (8) 8″ TFC spiral wound membranes, 5 micron sediment prefilter. In addition to Danfoss HP Pump which is manufactured from duplex SS2205 stainless steel alloy, Duplex 2205 High pressure piping, powder coated frame skid.

PERFORMANCE

The SW-52K-4480 SWRO Unit was designed to produce 200m3/day, at max. TDS 25,000 ppm.

Desalination using Seawater Reverse Osmosis (SWRO) membrane technology has become a viable option for the development of new regional water supplies.

Pure Aqua is well known in supplying the highest quality RO systems within the water treatment industry, all stainless steel pipes are passivated and electro polished, the skid is sand blasted, primed and fused or powder coated. Pressure vessels and membranes are manufactured in USA.

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