Instructor Information

Josh Weiss

Work Phone: 410-539-7681

Josh Weiss holds a BS in Civil & Environmental Engineering from the Georgia Institute of Technology and an MSE and Ph.D. in Environmental Engineering from Johns Hopkins University. He is an Associate in the Baltimore office of Hazen and Sawyer where he works on municipal water/wastewater and water resources management projects.

Course Information

Course Description

This course develops the fundamentals and applications of aerobic and anaerobic biological unit processes for the treatment of municipal and industrial wastewater. The principles of activated sludge, aeration and clarifier design, fixed film reactors, anaerobic treatment, solids handling and treatment, land treatment, and nutrient removal are presented. This course uses concepts from microbiology and the basic principles of stoichiometry, energetics, and microbial kinetics are used to support the design of biological unit processes.


EN.575.605 Principles of Water and Wastewater Treatment.

Course Goal

This course will provide students with critical knowledge of the biological and chemical underpinnings used in the design and application of biological processes for water and wastewater treatment.

Course Objectives

  • Apply the fundamental microbiological principles behind biological water and wastewater treatment processes.

  • Estimate critical design parameters for a biological treatment application.
  • Use stoichiometric and kinetic relationships to estimate net degradation of contaminants, consumption of electron acceptors and carbon sources, and production of cells over a biological treatment process.

When This Course is Typically Offered

This course is typically offered in the spring as an on-line course.


  • Review of water and wastewater treatment and basics of microbiology
  • Review of reactor models
  • Activated sludge
  • Nitrogen and Phosphorus removal
  • Aerated lagoons
  • Aerobic attached processes
  • Anaerobic suspended growth
  • Sludge treatment
  • Drinking water microbiology

Student Assessment Criteria

Class discussions 10%
Written assignements/problem sets 20%
Mid-term exam 25%
Final exam 25%
Class project 20%

It is expected that each class module will take approximately 10–12 hours per week to complete, including the following (note that not all modules will include all of these items):

·Reading the assigned sections of the texts (approximately 1–2 hours per week) as well as some outside reading;

·Listening to the audio annotated slide presentations (approximately 1–2 hours per week);

·Participation in discussion groups (1–2 hours per week);

·Completing written assignments/problem sets (approximately 3–4 hours per week); and

·Working on class project (approximately 1–2 hours per week).


Textbook information for this course is available online through the MBS Direct Virtual Bookstore.

Course Notes

There are no notes for this course.

Term Specific Course Website

(Last Modified: 12/22/2014 12:52:56 PM)