2nd Edition

# Mathematics Manual for Water and Wastewater Treatment Plant Operators: Wastewater Treatment Operations Math Concepts and Calculations

By

## Frank R. Spellman

ISBN 9781482224283
Published May 7, 2014 by CRC Press
258 Pages 30 B/W Illustrations

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## Book Description

To properly operate a waterworks or wastewater treatment plant and to pass the examination for a waterworks/wastewater operator’s license, it is necessary to know how to perform certain calculations. All operators, at all levels of licensure, need a basic understanding of arithmetic and problem-solving techniques to solve the problems they typically encounter in the workplace.

Hailed on its first publication as a masterly account written in an engaging, highly readable, user-friendly style, the Mathematics Manual for Water and Wastewater Treatment Plant Operators, Second Edition has been expanded and divided into three specialized texts that contain hundreds of worked examples presented in a step-by-step format. They are ideal for all levels of water treatment operators in training and practitioners studying for advanced licensure. In addition, they provide a handy desk reference and handheld guide for daily use in making operational math computations.

This third volume, Wastewater Treatment Operations: Math Concepts and Calculations, covers computations commonly used in wastewater treatment with applied math problems specific to wastewater operations, allowing operators of specific unit processes to focus on their area of specialty. It explains calculations for flow, velocity, and pumping; preliminary and primary treatments; trickling filtration; rotating biological contactors; and chemical dosage. It also addresses various aspects of biosolids in wastewater, treatment ponds, and water/wastewater laboratory calculations. The text presents math operations that progressively advance to higher, more practical applications of mathematical calculations, including math operations that operators at the highest level of licensure would be expected to know and perform. To ensure correlation to modern practice and design, this volume provides illustrative problems for commonly used wastewater treatment operations found in today’s treatment facilities.

Flow, Velocity, and Pumping Calculations
Velocity and Flow Examples
Velocity and Flow Practice Problems
Pumping
Basic Water Hydraulics Calculations
Basic Pumping Calculations
Positive-Displacement Pumps

Preliminary Treatment Calculations
Wet Well Capacity and Pumping Rate
Screening
Grit Removal
Screening and Grit Removal Practice Problems

Primary Treatment Calculations
Process Control Calculations
Primary Treatment Practice Problems

Trickling Filter Calculations
Trickling Filter Process Calculations
Trickling Filter Practice Problems

Rotating Biological Contactors
RBC Process Control Calculations
RBC Practice Problems

Activated Biosolids
Activated Biosolids Process Control Calculations
Activated Biosolids Practice Problems

Treatment Ponds
Treatment Pond Parameters
Treatment Pond Process Control Calculations
Treatment Pond Practice Problems

Chemical Dosage Calculations
Chemical Dosing
Chemical Dosage Practice Problems

Biosolids Production and Pumping Calculations
Process Residuals
Primary and Secondary Solids Production Calculations
Percent Solids
Biosolids Pumping
Biosolids Production and Pumping Practice Calculations

Biosolids Thickening Calculations
Thickening
Gravity/Dissolved Air Flotation Thickener Calculations
Centrifuge Thickening Calculations
Biosolids Thickening Practice Problems

Biosolids Digestion
Biosolids Stabilization
Aerobic Digestion Process Control Calculations
Anaerobic Digestion Process Control Calculations
Biosolids Digestion Practice Problems

Biosolids Dewatering and Disposal
Biosolids Dewatering
Pressure Filtration Calculations
Rotary Vacuum Filter Dewatering Calculations
Sand Drying Bed Calculations
Biosolids Disposal
Biosolids to Compost
Biosolids Dewatering and Disposal Practice Problems

Water/Wastewater Laboratory Calculations
The Wastewater Lab
Composite Sampling Calculation (Proportioning Factor)
Biochemical Oxygen Demand (BOD) Calculations
Moles and Molarity
Normality
Settleability (Activated Biosolids Solids)
Settleable Solids
Biosolids Total Solids, Fixed Solids, and Volatile Solids
Wastewater Suspended Solids and Volatile Suspended Solids
Biosolids Volume Index and Biosolids Density Index

Wastewater Treatment Practice Calculations
Appendix A.
Solutions to Chapter 14 Problems
Appendix B. Formulas

...

## Author(s)

### Biography

Frank R. Spellman, PhD, is a retired assistant professor of environmental health at Old Dominion University, Norfolk, Virginia, and the author of more than 90 books covering topics ranging from concentrated animal feeding operations (CAFOs) to all areas of environmental science and occupational health. He consults on homeland security vulnerability assessments for critical infrastructures, including water/wastewater facilities, and conducts audits for Occupational Safety and Health Administration and Environmental Protection Agency inspections throughout the country. Dr. Spellman lectures on sewage treatment, water treatment, and homeland security, as well as on safety topics, throughout the country and teaches water/wastewater operator short courses at Virginia Tech in Blacksburg.