The Integrated Solution
EBD Water ’s package Reverse Osmosis Systems are cost effectively designed for the purification of brackish waters. Although R.O. System is the best solution to a problem for many processes, it usually requires auxiliary equipment for proper system operation: EBD Water offers many options with the package R.O. systems providing design flexibility for optimum performance.
Principles of Operation
The Feedwater must normally be pretreated to ensure optimum membrane performance and reduce maintenance requirements.
The Feedwater enters the first stage where a portion of the water is purified (permeate). The remaining (concentrate) becomes the second stage feed and so on . [EBD Water design is optimized at 2 to 3 stages].
The concentrate from the last stage is directed to drain. The permeate streams from all stages are collected in one manifold for a total system recovery of 50 – 85% (depending on Feedwater quality and system capacity).
The total system salt rejection varies, depending on such items as the type and age of elements, the system recovery, and other factors. Typically, rejection of 80 – 99% of the TDS and 90 – 99% of the suspended material (organics and microcontaminants) can be realized by Brackish Water Systems.
Typical Features
Thin film composite membranes in 4″ or 8″ diameter (cellulose acetate membranes are also used).
Antiscalant Chemical Dosing (for control of Calcium Sulfate and Calcium Carbonate Scale), complete with Chemical Feed Pump, Polyethylene Day Tank and Level Control.
Cartridge Filtration protection up to 1 micron, with SDI sample port (to determine fouling potential due to Silt, colloidal and suspended material).
Pretreated Feedwater dump valve (to allow stabilization of the pretreatment system prior to the feedwater entering the R.O.).
High efficiency multistage centrifugal pumps 316SS with TEFC motors or multi- stage turbine pumps with submersible water tight motors depending on the application.
Pre-and Post-Flushes to minimize water hammer and remove supersaturated solutions.
Instrument board containing all process instruments, including safety and operational shut down switches, liquid filled SS pressure gauges, flow, PH, conductivity indicators and controllers, etc.
Centralized control panel, using state-of-the art control technologies, full voltage starters, phase protection, alarm silence buttons, integral disconnect switch, control switches, heavy duty indicating lights, control logic circuits, elapsed time meter, etc.
Cleaning connections of the grooved type for easy maintenance. Sample and test valves for ease of trouble shooting and data collecting. Future expansion capabilities.
Corrosion resistant material; using FRP for structural skid members and supports, pressure vessels, control and instrument panels; inert thermoplastics on low pressure pipes, hoses and fittings; 316L stainless steel and high quality alloys on high pressure pipes and fittings.
Model
Capacity (m3/day)
Dimensions (meters) (LxWxH)
HP
Element Size
(inches)
Recovery
(%)
| Model | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Larger systems are available as follows:
– up to 12,000 m³/day containerized.
– up to 4,000 m³/day skid mounted.
– 1,000 m³/day and larger site assembled.
The above specifications are based on the following:
– Third year operating performance.
– Feed water at 25 °C [Design limitations at 1 °C – 45 °C].
– Highest recommended permeate flow and recovery.
– Properly treated feed water.
– Turbidity less than 1 NTU.
– Inlet silt density index less than 4 [ Design Limitations at SDI = 5 ].
– Inlet pressure of 25 – 60 psig.
– Feed water TDS at 3,500 ppm [Design limitations at 1,000 – 15,000 ppm].
– Membrane feed pressure: 175-350 psig.
– Product pressure up to 15 psig.
Electric characteristics: 230/460 V, 3 PH, 60 HZ as standard (380 V, 3 PH, 50 HZ available).
Environment: Ventilated, indoors, ambient temperature less than 50 °C, and shielded from direct sunlight.
| Auxiliary Equipment | |||
| |||
|
Multimedia Filtration| Desalination Process Deionization Process Municipal Water Treatment Industrial Water Treatment Municipal Waste Treatment Industrial Waste Treatment Chemical Services Technical Services |