Description

Reverse Osmosis Operation & Maintenance

What you will learn:

Learn all the practical information necessary to thoroughly understand Reverse Osmosis (RO) and Nanofiltration (NF) water treatment technologies and apply this knowledge to operating an industrial reverse osmosis water treatment facility.

Length:

Eleven (11) hours of online training.

What you will earn:

David H. Paul, Inc. Certificate upon successfully passing an exam based on the proficiencies learned in this course.

OVERVIEW OF TOPICS

There are eleven (11) one hour training units for this course:

1. Water Contaminants Overview
2. Semipermeable RO/NF Membranes
3. Osmosis & Reverse Osmosis
4. Membranes
5. Membrane Elements
6. Pressure Vessels
7. RO/NF Units
8. RO Unit Operation
9. Seawater RO Unit Operation
10. Potential Problems
11. Brackish water pre-treatment to minimize problems
12. Seawater pre-treatment to minimize problems
13. Chemical Cleaning of RO/NF units

Water Contaminants

• • Ions
  • Gases
  • Organics
  • Silica

    Semipermeable Membranes RO/NF

    • • Structure
      • Water Flux
      • Salt Flux
      • Rejection of contaminants

        Osmosis & Reverse Osmosis

        • • Osmotic pressure
          • Applied pressure
          • Net Driving Pressure
          • Water flux
          • Salt flux

            Membranes & Membrane Elements

            • • Flat sheet, hollow fibre
              • Brackish, seawater
              • Low pressure, low fouling, high rejection
              • 2″ (5 cm), 2.5″ (6 cm), 4″ (10 cm), 8″ (20 cm), 8.5″ (22 cm) elements
              • 12.75″ (32 cm), New 16″ (41 cm) and new 18.25″ (46 cm) elements
              • Envelopes
              • Feed water spacer
              • Permeate spacer
              • Flow path
              • Low pressure, low fouling, high area & high rejection

                Pressure Vessels

                • • 2″, 2.5″, 4″, 8″, 16″, 18.25″
                  • End port, side port, multi-port
                  • Stainless steel, fibreglass
                  • Shimming elements

                    Reverse Osmosis Units

                    • • POU, POE, industrial, municipal
                      • Single stage, multi-stage
                      • Single pass, double pass
                      • Brackish water RO, seawater RO

                        Brackish Water RO Unit Operation

                        • • POU
                          • Single pass
                          • Double pass
                          • Recovery rate
                          • Concentration
                          • Water flux per element
                          • Net driving pressure (NDP) per element
                          • Salt passage per element
                          • NDP and SP versus temperature

                            Seawater RO Unit Operation

                            • • Single stage, double stage
                              • Single pass, double pass

                                Potential Problems

                                • • Scaling
                                  • Fouling
                                  • Chemical Attack

                                    Pre-treatment

                                    • • Minimize scaling

                                        o Softening

                                        o Acid injection

                                        o Scale inhibitor injection

                                      • Minimize fouling

                                        o Clarification

                                        o Media filtration

                                        o Cartridge filtration

                                        o Microfiltration/ultrafiltration

                                      • Minimize chemical attack

                                        o Activated carbon

                                        o Sulphite injection

                                        o Ultraviolet irradiation

                                      • Seawater pre-treatment

                                        o Conventional

                                        o Advanced

                                        Chemical Cleaning

                                        • • Removing scalants
                                          • Removing foulants
                                          • A good cleaning procedure
                                          • How to determine when to stop cleaning