41493 - Sewage Treatment Techniques

Learning outcomes

Learning outcomes

Main teaching objectives:

To present and explain technical knowledgments about planning, management and design of wastewater treatment plants.
 
To present design criteria for natural systems applied to treatment reclamation and reuse of domestic wastewater.

Professional profiles involved:
 
Engeneers working on water quality control and sanitary remediation of water volumes.
Designers of  company operating in wastewater treatment and solid waste disposal.

Top of page

Course contents

Preface: Sanitary Environmental Engineering: water, air, solid waste

Water: Cicles and balance in natural and waste water. White and black waters. First rain water; storm water. Drainage pipes for separate scheme, and for mixed waters scheme. Industrial and domestic water supply. Hygien Municipal Regulation. Water outfall discipline. Flowrate and characteristics of domestic and industrial wastewater. Treatability in order to use. Septic tanks and Imhoff tanks design. The project of a full-scale domestic wastewater treatment plant. Choice and ubication. Raw and fine screens. Sand removal. Primary sedimentation. Biodegradability and biological phases for secundary treatment. Secundary sedimentation. Active sludge plants upgrading to obtain phosphorous and nitrogen removal..Wastewater disinfection. Treatment and disposal of sludge. Natural system design for wastewater treatment or finishing. Biological ponds. FWS and SFS phytotreatment. “On site” treatment for domestic wastewater comig from little insediaments. Building and managing costs. Functional collaudation. Ocean and river disposal of treated and untreated wastewater. Offshore pipes. Diffusers. Eutrophic assessment and water quality in rivers, lakes, transition volumes and coastal seawater.

Solid waste: Merceologic and quantitative characteristics for domestic and industrial solid waste.Treatment of organic fraction, inert fraction, combustible fraction.

Air: Meteorology and atmospheric pollution. Atmosphere stability, geostrophic motion. Diffusive and punctual emissions: schemes utilized in dispersion models.

Readings/Bibliography

Title: DEPURAZIONE BIOLOGICA
Author: Renato Vismara
Edition: Hoepli

Title: INGEGNERIA DELLE ACQUE REFLUE
Authors: Metcalf & Eddy (quarta edizione)
Edition: Mc Graw-Hill Italian edition

Title: WASTEWATER ENGINEERING
Authors: Metcalf & Eddy
Edition: Mc Graw-Hill - Fourth edition

Title: DEPURAZIONE DELLE ACQUE
Author: Luigi Masotti
Edition: Calderini (2002)

Title: INGEGNERIA SANITARIA AMBIENTALE
Author: Piero Sirini
Edition: Mc Graw-Hill

Title: MANUALE DEL TRATTAMENTO DELLE ACQUE DI SCARICO
Authors: Imhoff & Imhoff
Edition: Franco Angeli

Title: TRATTAMENTO DELLE ACQUE DI RIFIUTO
Various authors: By Roberto Canziani
Edition: Istituto per l'Ambiente (MI)

 

Teaching methods

°  The course provides surveys and teaching visits in treatment plants and reclamation sites.

°  Room lessons are coupled with single assistance in analyzing an existing treatment plant project

Assessment methods

Examination is oral.

Teaching tools

Teaching files used for frontal lessons