LEARNING OUTCOMES

Provide students a solid knowledge about Unit Operations employed in gas solid separation (with particular reference to particle removal from atmospheric emission).

TEACHING METHODS

In-class lessons. Tutorials and numerical case-studies are presented and critically discussed during the lessons. Specific design exercises and application of process engineering are solved in group focusing on acquring transversal knowledge.

SYLLABUS/CONTENT

1. Introduction

Environmental and accident risk.. General Risk Model. Unwanted events classification. Personnel and process safety. Primary water, wastewater: overall cycle and future developments. Main parameters for the primary- and waste-water characterization  Relevant national and international regulations.

2. Environmental Hazard Identification and Analysis

Gas, vapour and dust hazardous properties and their evaluation.  Hazard identification tools and application to case-studies. Fire, explosion, instability and reactivity. Check List; Ranking method; FMEA; Hazard and Operability Study (HazOp); Fault Tree Analysis (FTA).

3. Severity and environmental damage

Source term models.  Dispersion modelling of neutral and dense gas and cold jet. Post-release evolving  scenarios Damage analysis. Probit equations. Notable major accidents and relevant lessons.

4 . Gaseous emissions treatment

Local, individual and social risk. Damage models (threshold and probit approach). Risk acceptability criteria. Risk mitigation and design of emergency relief systems. Land use planning.  Risk in multimodal HazMat transportation. HSE risk management. Risk perception.

5. Water treatment plant

The mechanical pre-treatment of primary water and wastewater. The aerobic and anaerobic processes of biological treatment. The activated sludge process, biological reactions and kinetics. Type of activated sludge processes: suspended or fixed biomass, membranes. The sludge, from a problem to a resource; treatment and use. The water potabilization cycle and innovative approaches to reduce the consumption and the wastewater share.

RECOMMENDED READING/BIBLIOGRAPHY

learning material is provided during the lessons period. Refernce text available at the University library or on the web:

Metcalf & Eddy – Wastewater Engineering – Treatment and Reuse – Mc Graw Hill - 2017

Edzwald - Water Quality and Treatment: A Handbook on Drinking Water, Sixth Edition – AWWA (American Water Works Association), ASCE (American Society of Civil Engineers), McGraw Hill - 2011

J. Casal "Evaluation of the effects and consequences of major accidents in industrial plants". Elsevier, Oxford, UK .

G. Nota. “Advances in Risk Management” Sciyo ed.(Chapter 4 : Trends, problems and outlook in process industry risk assessment and aspects of personal and process safety" by B. Fabiano and H. J. Pasman.  Free download at: http://www.intechopen.com/books/advances-in-risk-management

Further textbooks:

R.H. Perry, D.W. Green, “Perry’s chemical engineers’ Handbook” 9th ed., Mc Graw Hill – 2019.

G.G. Brown. “Unit Operations” Hoepli ed.