Water & Wastewater Treatment

Unit processes for drinking water and municipal wastewater: federal standards and permits, reactor hydraulics, coagulation, settling, filtration, membranes, disinfection, softening and PFAS, then activated sludge, nutrient removal and biosolids, applied to a new river water plant and a wastewater plant upgrade in Sioux Falls, South Dakota.

CIV-380 Year 3 3 credits 12 lessons · 3 h 58 min ▶ Video lessons coming soon

Offered by HSM University · Civil Engineering

This is the American version of this course. See the Canadian version.

What you'll learn

  • Explain the multi-barrier approach and interpret Safe Drinking Water Act regulations, NPDES permits and secondary treatment standards, and turn them into design targets.
  • Model treatment units as ideal and real reactors, analyze tracer tests for T10, baffling factor and dead space, and plan hydraulic profiles, flow splitting and redundancy.
  • Explain particle stability and coagulation mechanisms, select coagulant doses from jar tests including enhanced coagulation, and size rapid mix and tapered flocculation by velocity gradient.
  • Compute settling velocities, size sedimentation basins by overflow rate, and compare plate settlers, ballasted flocculation and dissolved air flotation.
  • Design rapid granular filters for rate, media, head loss and backwashing, and compare them with membrane filtration, including integrity testing.
  • Calculate log inactivation and CT for chlorine, check ultraviolet doses, explain breakpoint chlorination, and control disinfection by-products.
  • Compute lime and soda ash doses for softening, oxidant needs for iron and manganese, GAC contact time and bed life, and plan PFAS treatment and corrosion control for lead.
  • Characterize municipal wastewater flows and loads, estimate peaking factors, and design screening, grit removal and primary clarification.
  • Design an activated sludge process by solids retention time with Monod kinetics, compute oxygen demand and wasting, and check secondary clarifiers.
  • Design biological nitrogen and phosphorus removal, including nitrification SRT, MLE recycle, chemical and biological phosphorus removal, and alternative biological processes.
  • Perform solids mass balances through thickening, anaerobic digestion and dewatering, estimate biogas, and apply 40 CFR Part 503 biosolids requirements.
  • Assemble design basis reports and check a nutrient removal upgrade for volume, oxygen, alkalinity, clarifiers, solids and side streams, with risks and open items.

Course content

12 lessons · 3 h 58 min total · final exam

  1. 1 Water quality targets and regulations 20 min · quiz
  2. 2 Reactors, hydraulics and tracer tests 21 min · quiz
  3. 3 Coagulation and flocculation 19 min · quiz
  4. 4 Sedimentation and flotation 22 min · quiz
  5. 5 Filtration and membranes 19 min · quiz
  6. 6 Disinfection and disinfection by-products 19 min · quiz
  7. 7 Softening, metals, PFAS and corrosion control 20 min · quiz
  8. 8 Wastewater characteristics, preliminary and primary treatment 21 min · quiz
  9. 9 Activated sludge 20 min · quiz
  10. 10 Nutrient removal and other biological processes 19 min · quiz
  11. 11 Sludge treatment and biosolids 19 min · quiz
  12. 12 Capstone: checking a plant upgrade design 19 min · quiz
  13. E Final exam 20 questions

Requirements

Recommended background. You can start any course at any time.

Description

Unit processes for drinking water and municipal wastewater: federal standards and permits, reactor hydraulics, coagulation, settling, filtration, membranes, disinfection, softening and PFAS, then activated sludge, nutrient removal and biosolids, applied to a new river water plant and a wastewater plant upgrade in Sioux Falls, South Dakota.

Part of the Engineering stream, typically taken in year 3.