SRJC Course Outlines

4/14/2024 3:41:22 AMWWTR 112 Course Outline as of Fall 2017

Changed Course

Discipline and Nbr:  WWTR 112Title:  MATH FOR WATER TECH  
Full Title:  Math for Water and Wastewater Technology
Last Reviewed:2/13/2023

UnitsCourse Hours per Week Nbr of WeeksCourse Hours Total
Maximum3.00Lecture Scheduled3.0017.5 max.Lecture Scheduled52.50
Minimum3.00Lab Scheduled06 min.Lab Scheduled0
 Contact DHR0 Contact DHR0
 Contact Total3.00 Contact Total52.50
 Non-contact DHR0 Non-contact DHR Total0

 Total Out of Class Hours:  105.00Total Student Learning Hours: 157.50 

Title 5 Category:  AA Degree Applicable
Grading:  Grade or P/NP
Repeatability:  00 - Two Repeats if Grade was D, F, NC, or NP
Also Listed As: 
Formerly:  ENVT 112

Catalog Description:
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Practical application of mathematical calculations for hydraulics, chemicals, and solids used in the design, operation, process control and maintenance of water and wastewater distribution systems and treatment facilities.


Recommended Preparation:

Limits on Enrollment:

Schedule of Classes Information
Description: Untitled document
Practical application of mathematical calculations for hydraulics, chemicals, and solids used in the design, operation, process control and maintenance of water and wastewater distribution systems and treatment facilities.
(Grade or P/NP)

Limits on Enrollment:
Transfer Credit:
Repeatability:00 - Two Repeats if Grade was D, F, NC, or NP


Associate Degree:Effective:Inactive:
CSU GE:Transfer Area Effective:Inactive:
IGETC:Transfer Area Effective:Inactive:
CSU Transfer:Effective:Inactive:
UC Transfer:Effective:Inactive:

Certificate/Major Applicable: Both Certificate and Major Applicable


Student Learning Outcomes:
At the conclusion of this course, the student should be able to:
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1.  Perform calculations common to the fields of water distribution technology, water treatment
    technology, and wastewater treatment technology
2.  Use a spreadsheet program such as Excel to perform calculations

Objectives: Untitled document
In order to achieve these learning outcomes, during the course the students will:
1. Convert between common units of time, mass, length, area, volume, and temperature
2. Apply general mathematical concepts to calculations common in the water and wastewater
    industry, such as calculation of: areas, volumes, mass, density, specific gravity, ratios,
    percentages, median and average values, concentrations, flows, pressures, velocities,
    percent composition, chemical quantities, dosage, pumping rates, detention times, loading
    rates, efficiencies, and power usage
3. Complete the mathematical portions of the state certification exams for: Water Distribution
    System Operator (Grades 1 or 2), Water Treatment Operator (Grades 1 or 2), and
    Wastewater Operator (Grade 1 and 2)

Topics and Scope
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I. Units and unit conversion with English and Metric systems
    A. Length, areas, and volumes
    B. Mass, density, and specific gravity
    C. Time and flow rates
    D. Temperature
    E. Velocity and pressure
    F. Price and unit price
    G. Power and power cost
    H. Dimensional analysis
II. Basic arithmetic
    A. Fractions, decimals, and percentages
    B. Areas and volumes
    C. Ratios and proportions
    D. Exponents
III. Intermediate arithmetic
    A. Mean, median, and mode
    B. Weighted average
    C. Efficiency
    D. Algebraic variable isolation
IV. Chemistry and related calculations
    A. pH
    B. Concentrations
    C. Dosages
    D. Preparation of chemical solutions
V. Pumping calculations
    A. Static head
    B. Friction and head loss
    C. Total dynamic head
    D. Brake and motor horsepower
VI. Collection calculations
    A. Average and per capita flow
    B. Flow composition and velocity
    C. Wet well capacity and pumping rate
    D. Grit chamber and sand trap flow velocity and detention times
    E. Industrial discharge equivalent population
VII. Primary treatment calculations
    A. Chlorination loading
    B. Biological Oxygen Demand (BOD)
    C. Suspended Solids (SS) and Total Dissolved Solids (TDS)
    D. Clarifier volume, surface loading, detention times, efficiency
    E. Weir overflow rate
VIII. Treatment pond calculations
    A. Volume and evaporation rates
    B. Hydraulic and organic loading
IX. Filter calculations
    A. Capacity, loading, and efficiencies
    B. Recirculation ratio
X. Activated sludge calculations
    A. Food/micro-organism loading ratio
    B. Mean cell residence time
    C. Waste and return pumping rates
    D. Aerator air flow
    E. Volume and volume index
    F. Sludge thickening rate
    G. Digester seeding, loading, and detention time
XI. Solids calculations
    A. Centrifuge efficiency
    B. Belt press efficiency
    C. Volatile solids reduction
    D. Volatile acidity/alkalinity ratio
    E. Dissolved air flotation
    F. Solids mass balance and location
XII. Effluent treatment calculations
    A. Concentration-Time (CT)
    B. Chlorine dosage, demand, and residual
    C. Hypochlorite
     D. Dechlorination
    E. Ultraviolet (UV) and ozone
    F. Log removal and disinfection efficiency

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1. In-class exercises (8-10)
2. Problem solving assignments (10-14)
3. Quizzes and/or Midterms (2-10)
4. Final exam

Methods of Evaluation/Basis of Grade.
Writing: Assessment tools that demonstrate writing skill and/or require students to select, organize and explain ideas in writing.Writing
0 - 0%
This is a degree applicable course but assessment tools based on writing are not included because problem solving assessments are more appropriate for this course.
Problem solving: Assessment tools, other than exams, that demonstrate competence in computational or non-computational problem solving skills.Problem Solving
40 - 60%
In-class exercises and homework assignments
Skill Demonstrations: All skill-based and physical demonstrations used for assessment purposes including skill performance exams.Skill Demonstrations
0 - 0%
Exams: All forms of formal testing, other than skill performance exams.Exams
40 - 60%
Quizzes, midterms, and final (multiple choice, short answer, true-false and problem solving)
Other: Includes any assessment tools that do not logically fit into the above categories.Other Category
0 - 10%
Attendance and participation in class activities

Representative Textbooks and Materials:
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Math Text for Water and Wastewater Technicians. 3rd ed. Wright, Grover. Wright's Training. 1997 (classic)
Applied Math for Wastewater. Price, Joanne Kilpatrick. First CRC Press. 1991 (classic)
Applied Math for Wastewater Workbook. Price, Joanne Kilpatrick. First CRC Press. 1991 (classic)
Instructor prepared materials

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