MCCCD Official Course Competencies:

WRT210  2005 Spring – 2009 Spring

Membrane Technologies

1.

Explain the principles of osmotic pressure principles. (I)

2.

Demonstrate the design, operation, and maintenance of membrane 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)

MCCCD Official Course Outline:

WRT210  2005 Spring – 2009 Spring

Membrane Technologies

I. Reverse Osmosis

A. Osmotic pressure

B. Process

II. Membrane Technologies 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