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Syllabus | B.Tech Civil Engineering | Principles & Design of Wastewater Treatment & Disposal Systems

  Principles & Design of  Wastewater Treatment & Disposal Systems Learning Schedule
Pre-requisites: — Principles & Design of  Water Treatment & Distribution Systems 3 0 0 3



Proper treatment of wastewater reduces health risks to humans and animals and prevents surface and groundwater contamination. Inadequate treatment of wastewater allows bacteria, viruses, and other disease-causing pathogens to enter groundwater and surface water. This course provides an overview of type of units operations and processes involved in wastewater treatment and disposal including design of primary and secondary treatment units. On completion of this course students will be able to identify the need for primary and secondary treatment of wastewater in a cost-effective and sustainable way. The students will also learn the importance of wastewater treatment to protect water resources.



  1. To teach students the basic principles and concepts of unit operations and processes involved in

wastewater treatment.

  1. To develop student’s skill in the basic design of unit operations and processes involved in

wastewater treatment.

  1. To develop a student’s skill in evaluating the performance of wastewater treatment plants.



On completion of this course, the students will be able to

  1. Demonstrate an ability to recognize the type of unit operations and processes involved in

wastewater treatment plants.

  1. Demonstrate an ability to choose the appropriate unit operations and processes required for

satisfactory treatment of wastewater.

  1. Demonstrate an ability to design individual unit operation or process appropriate to the situation

by applying physical chemical, biological and engineering principles.

  1. Demonstrate ability in design of wastewater treatments units in a cost effective and sustainable

way and evaluate its performance to meet the desired health and environment related goals.

  1. Recognize the importance of wastewater treatment to protect the water resources.



Section A

Unit I: Wastewater Treatment

Physical, chemical and biological principles involved in wastewater treatment and designing of unit-operations and processes. Permissible Standards for wastewater disposal.

Unit II: Pre and Primary Treatment

Objectives-Unit operations and processes-Principles, functions and design of screens, Grit chamber, sedimentation tank, Aeration tank.

Section B

Unit III: Secondary Treatment

Secondary Treatment-Activated Sludge Process and Trickling filters; other treatment methods-Stabilization Ponds and Septic Tanks-Advances in Sewage Treatment.

Section C

Unit IV: Sewage Disposal and Sludge Management

Methods-Dilution-Self-purify cation of surface water bodies-Oxygen Sag Curve-Land disposal-Sewage Farming-Deep well injection- Soil dispersion system-Thickening-Sludge digestion-Bio-gas recovery, drying beds-Conditioning and Dewatering-Sludge disposal. Introduction to solid waste management, landfills and EIA.

Section D

Unit V: Waste Disposal System

Wastewater Treatment-Typical layouts-Screens-Grit Chamber-Sedimentation tanks-Trickling filter-Activated Sludge, sludge Digester-Septic tanks-Soil Dispersion System-Waste Stabilization pond.

Text Books:

  1. Garg S. K, Environmental Engineering-Sewage Disposal and Air Pollution Engineering, Khanna Publishers.
  2. Metcalf & Eddy, Wastewater Engineering Treatment & Reuse, Tata McGraw-Hill Education.

Reference Books:

  1. Howard S. Peavy, Donald R. Rowe, George Tchobanoglous, Environmental Engineering, Tata McGraw-Hill Education.
  2. Hammer & Hammer Jr., Water and Wastewater Technology.
  3. Rakesh Kumar, R.N.Singh, Municipal Water and Wastewater Treatment, Teri Press.
  4. P.N.Modi, Sewage Treatment Disposal and Wastewater Engineering.
  5. R.Asolekar, Soli. J.Arceivala, Wastewater Treatment for Pollution Control and Reuse, Tata McGraw- Hill Education.