# SRJC Course Outlines

 2/17/2020 2:31:18 AM WWTR 112 Course Outline as of Fall 2012 Changed Course CATALOG INFORMATION Discipline and Nbr:  WWTR 112 Title:  WASTEWATER TREATMNT MATH Full Title:  Wastewater Treatment Math Last Reviewed:2/13/2017

 Units Course Hours per Week Nbr of Weeks Course Hours Total Maximum 3.00 Lecture Scheduled 3.00 17.5 max. Lecture Scheduled 52.50 Minimum 3.00 Lab Scheduled 0 6 min. Lab Scheduled 0 Contact DHR 0 Contact DHR 0 Contact Total 3.00 Contact Total 52.50 Non-contact DHR 0 Non-contact DHR Total 0

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

Title 5 Category:  AA Degree Applicable
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 wastewater treatment plants and facilities.

Prerequisites/Corequisites:

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 wastewater treatment plants and facilities.

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

ARTICULATION, MAJOR, and CERTIFICATION INFORMATION

 Associate Degree: Effective: Inactive: Area: CSU GE: Transfer Area Effective: Inactive: IGETC: Transfer Area Effective: Inactive: CSU Transfer: Effective: Inactive: UC Transfer: Effective: Inactive: C-ID:

Certificate/Major Applicable: Both Certificate and Major Applicable

COURSE CONTENT

Outcomes and Objectives:
Upon completion of the course, students will be able to:
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Upon completion of the course, students will be able to:
1. Apply general mathematical concepts to the wastewater industry.
2. Utilize special terminology and units as applied to wastewater science operations.
3. Utilize basic mathematical principles for hydraulic calculations.
4. Explain the basics of pump usage and operation.
5. Utilize unit conversions related to flow, volume, and weight.
6. Analyze and calculate the necessary parameters used in the operation, process control and maintenance of a wastewater treatment plant.

Topics and Scope
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I. Mathematical methods for hydraulic calculations
A. Fractions, decimals, percentages
B. Arithmetic mean, median, mode
C. Weighted averages
D. pH calculations
E. Ratio and proportions
F. Conversions
1. English to metric
2. Volume to weight
3. Flow conversions
G. Algebraic concepts for variable isolation
II. Calculations of chemical quantities
A. Pounds required
B. Dose calculations
C. Preparation of chemical solutions
III. Wastewater collection
A. Flow quantity
1. Average flow
2. Per capita flow
3. Equivalent population for industrial discharges
B. Flow composition
C. Flow velocity
IV. Preliminary treatment
A. Pumping stations
1. Wet well capacity
2. Wet well pumping rate
B. Screenings
C. Grit chambers and sand traps
1. Flow velocity
2. Detention time
3. Grit removal
V. Primary treatment: wastewater
B. Clarifier/sedimentation basin volume
D. Clarifier detention time
E. Weir overflow rate
F. Clarifier efficiency
G. Solids removal
H. Clarifier sludge pumping
VI. Treatment: ponds and filters
A. Stabilization ponds
1. Volume
3. Evaporation rate
B. Trickling filters
1. Filter capacity
3. Treatment efficiencies- BOD & suspended solids
4. Recirculation ratio
VII. Activated sludge treatment of wastewater
A. Aeration
2. Mean cell residence time
3. Waste sludge pumping rate
4. Return activated sludge pumping rate
5. Aerator air requirements
1. Rate calculations
2. Sludge volume index
A. Filtration rate
IX. Sludge treatment and disposal for wastewater treatment
A. Sludge pumping: wastewater
1. Sludge volume
2. Sludge thickening
3. Piston pumps
B. Digester seeding
D. Volatile acids/alkalinity ratio
E. Volatile solids reduction
F. Sludge withdrawal for dewatering
X. Mechanical solids thickening
A. Centrifuge efficiency
B. Belt press efficiency
C. Dissolved air flotation: solids capture and air to solids ratio
D. Other solids thickening
XI. Effluent treatment and disposal
A. Disinfection
1. Chlorine dosage, demand, and residual
2. Hypochlorite calculations
3. Calculation of CT(concentration x time)
4. Dechlorination
5. Other disinfection methods
B. Log removal calculations to assess disinfection efficiency
C. Sand filtration
XII. Solids balance through wastewater treatment plants
A. Calculation methods for solids in pounds and sludge units
B.  Process used to determine solids mass and location
C.  Values used to determine solids mass balance
XIII. Pumps
1. Static
2. Friction
3. Total dynamic
B. Power usage
1. Horsepower
2. Brake horsepower
3. Motor horsepower
4. Conversion of horsepower to kilowatt
5. Cost of power

Assignments:
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1. Weekly problem solving homework assignments related to wastewater treatment
2. Quizzes (10-15)
3. Final exam