Design a Reverse Osmosis System

Accurate system design is critical to getting the most from your water treatment system. Dozens of factors can impact the productivity of your system. That is why Dow's ROSA (Reverse Osmosis System Analysis) design software program is intended to offer the most precise design recommendations to optimize your system performance.

Ion Exchange or Reverse Osmosis?
The first question that must be addressed in the design of a new water treatment plant is whether to install an ion exchange system or reverse osmosis. The principal drivers for such a decision will be economic in terms of capital and operating costs, as well as requirements for chemical and wastewater disposal. An Economic Comparison Between IX and RO as options for water treatment applications has been made to help in a new plant design decision.

Economic Comparison Between IX and RO

Steps to Design an RO System

Engineering Information (100KB PDF)

FTNORM Normalization Software

ROSA System Design Software

System Design Options

System Design Introduction (54KB PDF)

Batch vs. Continuous Process (51KB PDF)

Single Module System (56KB PDF)

Single Stage System (34KB PDF)

Multi Stage System (36KB PDF)

Plug Flow vs. Concentrate Recirculation (171KB PDF)

Permeate Staged System (58KB PDF)

Special Design Possibilities (34KB PDF)

System Performance Projection

System Operating Characteristics (90KB PDF)

Design Equations and Parameters (144KB PDF)

Comparing Actual Performance of FILMTEC™ Elements to ROSA Projection (25KB PDF)

System Components

System Components: High Pressure Pump (34KB PDF)

System Components: Pressure Vessels (38KB PDF)

System Components: Shutdown Switches (27KB PDF)

System Components: Valves (32KB PDF)

System Components: Control Instruments (33KB PDF)

System Components: Tanks (41KB PDF)

System Design Materials and Suggestions

Corrosion Control (78KB PDF)

System Design Considerations to Control Microbiological Activity (36KB PDF)

System Design Suggestions for Troubleshooting Success (31KB PDF)



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