34769 - Wastewater Treatment M

Learning outcomes

Main teaching objectives:

To present and explain technical knowledgments about planning, management and design of wastewater treatment plants.

To illustrate principles and facilities involved in water quality control and remediation of water volumes according with existing italian laws.

To present design criteria for natural systems applied to treatment reclamation and reuse of domestic wastewater.

Course contents

Preface: Sanitary Environmental Engineering: Hygien and facility.

Water: Wastewater characteristics. Technical laws. Industrial, agricoltural and domestic discharge. Hygien Municipal Regulation. Water outfall discipline. Wastewater reuse regulations. Variations in flowrate and characteristics of domestic and industrial wastewater. Treatability in rainy weather conditions. Water volumes protection and sanitary reclamation plans. Kinetics and biochemistry of bacterial and algal biomass. Growth and death in suspended and attached biomasses. 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. Separate scheme. Wuhrmann scheme. Ludzack-Ettinger scheme. Bardenpho scheme. A2/O process. Phoredox process. Trickling filters. Granular settling Biofilters.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.

Readings/Bibliography

Recommended:
Title: DEPURAZIONE E SMALTIMENTO DEGLI SCARICHI URBANI
Authors: G.L.Bragadin , M.L. Mancini
Edition: Pitagora-Bologna (2007)

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

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

° During tha course students prepare a personal paper about a project or a functional study regarding a treatment plant or a natural treatment system.

Assessment methods

Examination is oral.

Teaching tools

Each student receives:

a) slides and projected files used during room lessons
b) a paper about the design of an existing wastewater treatment plant.
c) an harvest of existing technical laws, in Italy, about outfall regulation, treatment and reuse of wastewater

Office hours

See the website of Maurizio Mancini