Reverse Osmosis Design: Industrial Reverse Osmosis Equipment

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Reverse Osmosis Design: Designing Effective Reverse Osmosis Equipment for Industrial and Power Generation Applications
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Reverse Osmosis Equipment for Power Generation
Primary power generation Reverse Osmosis application is boiler feed water pre-treatment
Downstream of clarification and filtration
Upstream of demineralization polishing
Reverse Osmosis equipment performance directly impacts demin performance and acid/caustic usage.
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Reverse Osmosis Equipment Definitions
Osmosis
Pure water diffuses from the dilute side to the concentrated side of a semipermeable membrane.
Reverse Osmosis
High pressure is applied to the concentrated side of the membrane and pure water flows to the dilute side.
Net Driving Pressure
The pressure applied to the membrane to create the reverse osmosis. Typically 200 – 450 psi.
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Designing Reverse Osmosis Equipment for Power Generation
Four main components to an RO system
Element
Array
Stage
Pass
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RO Element types
Spiral wound
Hollow fiber
Large tube
Flat plate
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RO Array
How the elements are grouped together
Series
Parallel
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Industrial Reverse Osmosis for Power Generation
RO Stage
A series of elements linked together such that the reject (concentrated) water from stage 1 becomes the feed water for stage 2.
This is done to reduce wastewater and to increase the total recovery from the RO array.
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A Two Stage RO System for Power Generation
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Reverse Osmosis for Power Generation
RO Pass
An arrangement of elements where the permeate from pass 1 becomes the feed water of pass 2.
This is done to produce a final product that is more pure than what can be achieved using only one pass.
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A Two-Pass Two-Stage RO System
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Using Multiple Passes to Improve Permeate Quality in a Power Generation Example
Note: Calculated results. Field efficiencies will likely be lower.
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Using Multiple Stages to Reduce Wastewater in a Power Generation Example
Note: Calculated results. Field efficiencies will likely be lower.
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Critical Next Step!
Download and read the complete whitepaper while it is still available:
Reverse Osmosis Design for the Power Generation Industry- What You Need to Know
http://www.laynewater.com/landing_ro_powerind.html
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Why Choose Layne for your Power Generation Reverse Osmosis Applications?
Total Water Expertise from Source to Discharge!
1. Complete filtration options – From large municipal to light industrial Layne has the technology
2. Hydrology – Layne can locate, quantify and compare all of your water source options
3. Well drilling – No water available? We can access water sources that are beyond the reach others
4. Pipeline Construction – 10 miles from a water source? Not a problem!
Get the whole story here!
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