Unit SANITARY ENGINEERING AND TECHNICAL FACILITIES FOR WASTE TREATMENT

Course
Environmental engineering
Study-unit Code
GP006029
Curriculum
In all curricula
Teacher
Piergiorgio Manciola
CFU
14
Course Regulation
Coorte 2021
Offered
2022/23
Type of study-unit
Obbligatorio (Required)
Type of learning activities
Attività formativa integrata

TECHNICAL SYSTEMS FOR THE TREATMENT OF WASTE

Code GP006032
CFU 6
Teacher Francesco Di Maria
Teachers
  • Francesco Di Maria
Hours
  • 48 ore - Francesco Di Maria
Learning activities Affine/integrativa
Area Attività formative affini o integrative
Academic discipline ING-IND/08
Type of study-unit Obbligatorio (Required)
Language of instruction Italian
Contents Principle and legislation of waste managment, main treatment and facilites for waste disposal and recycling
Reference texts Lesson minutes
Educational objectives Ability in understanding and sizing of waste managment systems and related treatment and disposal facilities
Prerequisites The required prerequisites are shown in the Integrated Course Sheet (Sanitary Engineering and Techical Facilities for Waste Treatment).
Teaching methods Theoretical lessons
Practical training
Field visits
Other information Office hours
-monday 8:30am 11:30am
-wednesday 3:00pm 6:00pm

Room n.38
Dipartimento di Ingegneria

Statistic data about marks are shown in the Integrated Course Sheet.
Learning verification modality Oral and written

More information on learning verification methods are shown in the Integrated course (Sanitary Engineering and Techical Facilities for Waste Treatment) tab.
Extended program Introduction to waste management:
- General principle
- Legislation
Waste managment
- collection
- recycling
-disposal
Waste treatment:
- Incineration
- Mechanical and Biological treatment
- Composting and anaerobic digestion

ENVIRONMENTAL SANITARY ENGINEERING

Code GP006033
CFU 8
Teacher Piergiorgio Manciola
Teachers
  • Piergiorgio Manciola
Hours
  • 64 ore - Piergiorgio Manciola
Learning activities Caratterizzante
Area Ingegneria per l'ambiente e territorio
Academic discipline ICAR/03
Type of study-unit Obbligatorio (Required)
Language of instruction Italian
Contents Aquatic ecosystems assessment. Urban wastewater Treatments: flow diagrams; wastewater flow estimation; wastewater characteristics; physical treatment processes; outline of chemical treatment processes; biological treatment processes; bacterial growth, biomass yield, microbiological kinetics, rate of utilization of soluble substrates, rate of biomass growth; biological organic removal, biological nitrification/de-nitrification, rate of O2 uptake; advanced wastewater treatments. Treatment and disposal of sludge: anaerobic digestion process; properties of the sludge, thickening devices; sludge stabilization. Case Study: design of an extended aeration wastewater treatment plant.
Reference texts SUGGESTED TEXTS:
Duplicated Lecture notes
SUPPLEMENTARY TEXTS:
A. Misiti, Fondamenti di Ingegneria Ambientale, NIS - La Nuova Italia Scientifica, Roma
L. Bonomo, Trattamenti delle acque reflue, McGraw-Hill
L. Masotti, P. Verlicchi, Depurazione delle acque di piccole comunità, Hoepli Editore.
Metcalf & Eddy, Ingegneria delle acque reflue. Trattamento e riuso, McGraw-Hill
Educational objectives Provide the theoretical, methodological, technological and regulatory frameworks (legislative knowledge) for the design and operation of civil wastewater treatment facilities
Prerequisites Mathematical analysis: analytic functions, differential and integral calculus of functions of single and several variables, partial differential equations.
Physics and Rational Mechanics: vector calculus, cardinal equations of statics and dynamics.
Hydraulics: elements of Hydrostatics, open channel flow and pressurized flow,
Chemistry: chemical reactions and redox reactions
Teaching methods Theoretical lessons and practical training. Classroom lectures on all subjects of the program with interactive involvement of students. Classroom exercises performed on the blackboard. Seminar frontal lessons with projector support.
Other information The Sanitary Engineering Environmental module is co-ordinated and preparatory with the Module for Technical Facilities for Waste Treatment. The assessment of acquired skills is carried out at two different times after class of each module.
Statistical data on student exam results:
Students sample: 80; Average grade: 27.07/30; Standard Deviation 1.50/30
Percentage of students who obtained an exam mark included in the range
18 - 21: 2.5 %
21 - 24: 6.3 %
24 - 27: 38.8 %
27 - 30: 52.4 %

The schedule of the exams is available at the following link:
http://www.ing1.unipg.it/didattica/studiare/calendario-esami
The teaching materials provided by the teachers is available in https://www.unistudium.unipg.it/unistudium/

Notes:
The course is divided into two coordinated modules: i) Sanitary Engineering Environmental ii) Technical Facilities for Waste Treatment. The assessment of acquired skills is provided at two different times after class of each module
Reception hours: Wednesday, 15:30 - 17:30. Venue: Office of Prof. Manciola Piergiorgio, Water Engineering Section, Department of Civil and Environmental Engineering, Via G. Duranti, 93 Perugia (tel +393356209101).
For information on support services for students with disabilities and / or DSA visit http://www.unipg.it/disabilita-e-dsa
Learning verification modality The exam is composed of two units: Sanitary Engineering Environmental and Technical Facilities for Waste Treatment. For each unit, students are required to take a written exam and two oral exams. Due to logistical reasons, the written exam will take place on a different time or date from the oral ones.
The written exam consists of 10 multiple-choice questions and must be completed in about 30 minutes. The questions will verify students’ knowledge on the principles and techniques used for wastewater purification and treatment, as well as the techniques used for solid waste stabilization. The exam aims at verifying the ability of understanding the case-studies explained in class, and the ability of correctly applying theory and skills learned during the course.

The first oral exam lasts about 15 minutes during which students will introduce and discuss the case studies analyzed during the course.
The second oral exam lasts about 30 minutes and aims at verifying students’ knowledge and understanding of the following topics:
- the theoretical and methodological contents of the course;
- the models employed for simulating different chemical and physical processes on which wastewater and solid waste treatment are based;
- the technical facilities and solutions employed in the removal of pollutants from wastewater, the stabilization of the resulting sludge, and the treatment of wastewater;
- the computational procedures and methods for sizing technical facilities for wastewater and solid waste treatment, with particular attention to the case studies introduced during the course;
- students’ skills of autonomy and independent reasoning in evaluating different project strategies.
The exams also aim at verifying the students’ skills of oral expression and presentation of the topics and questions asked by the Commission. The exams will also verify students’ ability of employing dialectic and communication skills to summarize the results of calculus procedures studied during the course.
The final grade is out of 30 and is obtained from the weighted average of the grades of each exam (written and oral). The following weight are assigned to each exam unit:
- Sanitary Engineering: weight = 4/21
- Technical Facilities for Waste Treatment: weight = 1/7
Extended program Aquatic ecosystems
1. sources and effects of pollution;
2. aquatic ecosystem self-purification;
3. oxygen balance in lakes and rivers
4. eutrophic assessment and water quality.

Urban wastewater Treatments
1. Flow diagrams wastewater treatment plants (primary, secondary and tertiary treatment systems).
2. Wastewater flow estimation: i) average dry weather flow, average wet weather flow; ii) peak factor, peak flow.
3. Wastewater: i) general characteristics and key design parameters (TS, VS, TSS, VSS, BOD, COD, TOC, ThOD, TKN; ii) correlation between BOD, COD and TOC; iii) wastewater loading rates.
4. Physical treatment processes: i) grid screening, grit chamber, equalization basin, mixing and flocculation, energy requirements; ii) gravity separation (Newton's law, Stokes' law), mass sedimentation, hydraulic loading surface, detention time; iii) primary and final sedimentation tank design, efficiency of sedimentation, flotation, aeration systems.
5. Chemical treatment processes: fundamentals of chemical coagulation, fundamentals of chemical processes for phosphorus removal, chemical precipitation for removal of heavy metals, chemical oxidation from COD/BOD and ammonia removal.
6. Biological treatment processes: i) role of microorganisms, types of biological processes used (attached and suspended biomass); ii) bacterial growth and biomass yield; iii) microbiological kinetics (Monod's law, Michealis & Menten's law); kinetics terminology, rate of utilization of soluble substrates, rate of biomass growth, effect of temperature; iv) biological organic removal, biological nitrification, biological de-nitrification, , rate of O2 requirement; v) fundamentals of biological phosphorous removal; fundamentals of anaerobic treatments; biosolids management.
7. fundamentals of advanced treatments: filtration, disinfection (chlorine, chlorine dioxide, peracetic acid, ozone, UV).

Treatment and disposal of sludge:
1. Anaerobic digestion process: hydrolysis, fermentation, acetogenesis, methanogenesis, reaction rate, design criteria separate reactors and combined, biogas production and energy balance;
2. properties of the sludge: dry portion of the sludge, humidity, specific weight;
3. thickening devices: gravity thickening, dissolved air flotation, gravity belt thickening and rotary drum thickening, centrifuge thickening;
4. sludge stabilization: aerobic stabilization; psychrophilic and mesophilic anaerobic stabilization.

Case Study - Design of an extended aeration wastewater treatment plant: 1. technical legislation, design data, warranties epurative; 2. plant layout and standard structures; 3. intake structure and sewage pumping station; fine screening and grit removal; 4. biological treatment: pre-denitrification, oxidation and nitrification; nitrate recirculation; 5. aeration system: O2 required, O2 dissolving standard capacity, air volume O2 equivalent, sizing compressor system; 6. sludge recirculation and final sedimentation; 7. advanced wastewater treatments: phosphorus chemical removal, final filtration, PPA disinfection 8. sludge management: stabilization, thickening, dewatering and transport to landfill;. 9. construction details, performance characteristics of electromechanical equipment, energy use
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