Maricopa Community Colleges  WRT210   19986-20005 
Official Course Description: MCCCD Approval: 05/26/98
WRT210 19986-20005 LEC 3 Credit(s) 3 Period(s)
REVERSE OSMOSIS
Fundamentals of Reverse Osmosis. Includes basic theory and function of reverse osmosis systems, membrane design and use, element configuration, maintenance, and record keeping. Prerequisites: WRT160, and CHM135, or permission of department.
Go to Competencies    Go to Outline
 
MCCCD Official Course Competencies:
 
WRT210   19986-20005 REVERSE OSMOSIS
1. Explain the principles of osmotic pressure principles. (I)
2. Demonstrate the design, operation, and maintenance of reverse osmosis equipment. (II)
3. Describe the design and types of membranes. (II)
4. Diagram the design of a reverse osmosis (RO) unit. (III)
5. Calculate recovery and rejection flows. (IV)
6. Explain the methods to reduce foulants and scalants. (V)
7. Perform chemical dose calculations. (V, VI)
8. Describe the procedures required for post treatment of water. (VII)
9. Describe the data and records that must be kept in regard to reverse osmosis treatment of water. (VIII)
10. Collect and calculate data for analyses of water samples (VIII)
Go to Description    Go to top of Competencies
 
MCCCD Official Course Outline:
 
WRT210   19986-20005 REVERSE OSMOSIS
    I. Reverse Osmosis
        A. Osmotic pressure
        B. Process
      II. Reverse Osmosis Equipment
          A. Membranes
            1. design of spiral wound membranes
            2. types of membranes
            3. comparison of membranes
          B. Pressure vessel assembly
            1. end cap assembly
            2. loading sequence
          C. Cleaning and maintenance
            1. frequency
            2. procedures
        III. Design of an Reverse Osmosis Unit
            A. High pressure pumps
              1. variable frequency drive (VFD)
              2. feed pressure control valve
            B. Reject flow control valve
            C. Array schemes
            D. Pass schemes
          IV. Recovery and Rejection Flows
              A. Feed flow
              B. Permeate flow
              C. Reject, concentrate, brine flow
              D. Recovery calculation
              E. Rejection calculation
            V. Foulants and Scales
                A. Characteristics
                B. Consequences
                C. Factors affecting fouling
                  1. physical
                  2. chemical
                  3. processing
              VI. Calculations
                  A. Silt density index
                  B. Turbidity
                  C. Zeta potential
                  D. Streaming current
                VII. Post-treatment
                    A. Second pass caustic injection
                    B. High efficiency RO system
                    C. Brine recovery
                  VIII. Record Keeping
                      A. Important data
                      B. Records
                      C. Sample collection
                      D. Data collection
                  Go to Description    Go to top of Competencies    Go to top of Outline