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Indian Institute of Technology Roorkee

Water and waste water treatment

Indian Institute of Technology Roorkee and NPTEL via Swayam


Waste water part of syllabus is covered from the headworks till the final Disinfection and Disinfectant removal,their design is also considered in detail. Water treatment portion covers the nitty gritty of treatment and the relevant aspects post treatment like residual removal. This course will allow the student to clear basics and concepts for further in depth learning.INTENDED AUDIENCE :Civil Engineering and Environmental Engineering/science studentsPREREQUISITES : NoneINDUSTRIES SUPPORT :None


Week 1IntroductionOverview of water and waste water systems
  • Urban water system
  • Treatment plans
  • Design process
Review of fundamentals
  • Concentrations
Week 2Review of fundamentalso Material flowso Material balances
  • General approach
  • Applications
Waste water treatmento General conditions
  • Quantities
  • Quality
  • Treatment objectives
  • Types of plants
o Head works
  • Goal
  • Pump station
  • Flow measurement
  • Bar racks and screens
  • Grit removal
Week 3Waste water treatmento Primary sedimentation
  • Goal
  • Flocculent sedimentation
  • Primary design variables
  • Secondary design values
  • BOD Removal
o Biological treatment
  • Introduction
  • Activated sludge process
  • Introduction
  • Biological processes
Week 4Waste water treatmento Biological treatment
  • Activated sludge
  • Analysis (material balance)
  • Design
  • Activated sludge variations
  • Nutrient removal in activates sludge
  • Attached growth
  • Trickling filter
  • Rotating biological contactors
Week 5Waste water treatmento Disinfection / Disinfectant removal
  • Goal
  • Chlorine disinfection
  • UV light disinfection
o Other treatment processWeek 6Water treatmento General considerations
  • Quantities
  • Quality
  • Water treatment plants
  • Preliminary treatment
o Coagulation and flocculation
  • Rapid mix
  • Flocculation basin
Week 7
Water treatmento Sedimentationo FiltrationWeek 8
Water treatmento Filtrationo Disinfection and disinfection by productsWeek 9Water treatmento Lime softeningo Ion exchange softeningWeek 10Water treatmento Nano filtration softeningo Desalination
  • Residual management
o Overview
  • Types of residuals
  • Sources
  • Conventional residual management systems
Week 11Residual managemento Concentrationo StabilizationWeek 12Residual managemento Conditioningo Dewatering

Taught by

Prof. Bhanu Prakash Vellanki



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