Ελληνικά
  1. Home
  2. Courses
  3. Sanitary Engineering

Sanitary Engineering

Course Description:

This module consists of two parts; Part A and Part B. In part A water treatment for the production of drinking water is examined. Part A analyses the basic processes which take place in a water treatment plant. These consist of pre- and post-disinfection (chlorination, UV irradiation and ozonation), coagulation and flocculation, sedimentation and clari-flocculation (i.e. combined coagulation and sedimentation), sand filtration and sludge treatment through thickening and dewatering and sludge disposal. Furthermore advanced methods for water treatment are examined. The students are required to carry out a basic design of a conventional water treatment plant following the principles which are described in class. Furthermore, the module consists of a laboratory exercise where the process of coagulation optimization is experimentally demonstrated. In part B, the basic processes which take place in wastewater treatment are analysed; these include pre-treatment, primary sedimentation, biological treatment and sewage sludge management. Part B of the module includes a series of exercises which the students should tackle

Prerequisite Knowledge

Students should have the basic knowledge on Environmental Technology

Course Units

# Title Description Hours
1 Introduction to water treatment Physicochemical and microbiological parameters of water characterization, legislative framework for drinking water, usual technologies for water treatment, typical flow charts 1Χ4=4
2 Disinfection Chlorination, UV irradiation, ozonation, pre- and post-disinfection, Design criteria, Examples 1Χ4=4
3 Coagulation, flocculation and sedimentation Stability of colloids, mechanisms and parameters which affect colloidal stability, coagulation process, design of coagulation tanks for, settling theory, design of sedimentation tanks, clari-flocculation units, management of produced sludge, design parameters, examples 2Χ4=8
4 Filtration Filtration mechanisms, characteristics of a filtration unit, design parameters, alternative operation modes, backwashing operation, examples 2Χ4=8
5 Advanced water treatment processes Adsorption to activated carbon, ion exchange, electro-dialysis, microfiltration, ultrafiltration, nanofiltration, reverse osmosis, removal of hardness 1Χ4=4
6 Introduction to wastewater treatment Wastewater characteristics, treatment requirements and relevant legislation, conventional wastewater treatment system, pre-treatment and primary treatment of wastewater 1Χ4=4
7 Biological wastewater treatment Introduction to the activated sludge process for organic carbon removal and nitrification, design criteria for the aeration reactor, kinetics of organic carbon removal and biomass growth, factors affecting nitrification, development of mathematical model of activated sludge, design and operation of sedimentation tanks, Examples 4Χ4=16
8 Treatment valorisation and disposal of sludge Sludge treatment processes, thickening of sludge, aerobic and anaerobic sludge treatment, dewatering, valorisation, final disposal, examples 1Χ4=4

Learning Objectives

After the successful completion of this course students will:

  1. Have a thorough understanding of the basic processes involved in water and wastewater treatment
  2. Solve a basic design of a water treatment plant
  3. Understand the usefulness and the importance of technologies and processes applied for water and wastewater treatment

Teaching Methods

Teaching methods Class lectures, demonstration of technologies, solving of problems, lab exercise
Teaching media Blackboard use, powerpoint presentations, YouTube videos, solving problems in class, lab work
Laboratories The students perform an experiment on the determination of the optimum dose of coagulant in water
Problems - Applications Students are assigned a design problem of a water treatment plant (Part A) and three exercises on wastewater treatment (Part B)

Student Assessment

  • Final written exam: 50%
  • Mid-term exam: 50%
  • Problems - Applications: 20% BONUS

Textbooks - Bibliography

  1. Class notes and power point presentations

  2. A. Andreadakis (2015) Treatment and management of wastewater and sludge, NTUA (in Greek)

  3. A. Andreadakis (2018) Water Treatment: Basic Principles and Processes, Symmetria (In Greek)

Lecture Time - Place:

  • Thursday, 13:45 – 15:30,
    Rooms:
    • Ζ. Κτ. 1 Πολ., Αιθ. 7
  • Friday, 09:45 – 11:30,
    Rooms:
    • Ζ. Κτ. 1 Πολ., Αιθ. 13