Gaseous Effluents and Treatment Processes

Approval of Chemistry’s curricular units.

• Module 1: the topics will be presented using multimedia presentations and guided analysis of underlying legislation.
• Module 2: the topics will be successively presented, each followed by problem-solving and case studies analysis (PBL).
• Module 3: the themes will be presented using of multimedia presentations, followed by design problems resolution.
• The presentation of some themes will be complemented by field trips to industrial installations or virtual presentations.

The UC should provide students with the aptitudes necessary to develop evaluation and intervention abilities within the scope of anthropogenic emissions into the atmosphere and respective abatement systems.

The learning objectives comprise the acquisition of the following skills:

1. Atmospheric pollutants
• Describe the atmospheric pollutants, understand the secondary pollutants’ formation mechanisms,  and identify the atmospheric pollutants associated with the industrial, transport, and agriculture sectors;
• Learn the effects of atmospheric pollutants on human health, functioning of ecosystems, and cultural and natural heritage;
• Identify the main European and national legislation and understand its functioning as part of air pollution control policies;
• Know the atmospheric pollution monitoring methods.
2. Computations and modelling
• Carry out calculations involving atmospheric pollutants, mastering the use of methods for conversion, normalization and adjustment, as well as the determination of emission factors;
• Calculate the minimum height of chimneys;
• Apply the Gaussian model of pollutant dispersion in the atmosphere.
3. Treatment processes
1. Understand the atmospheric effluent treatment processes: constitution, operation and integration with other systems;
2. Size some parameters in example systems: scrubbers, adsorption towers, cyclones, electrostatic precipitators, and baghouses.

Module 1

1. Pollutants, producers and main effects
2. Legislation, for the management of the “Air” resource
• International, European and Portuguese;
• Analysis according to objectives: general, industrial, specific (CELE, etc)
• BAT and licensing.
3. Ambient, indoor and work air quality management
• Pollutant monitoring
• Techniques and equipment for the detection and monitoring of atmospheric pollutants, used during emission, in indoor air or in ambient air.

Module 2

1. Solving basic problems involving gases
• Calculation of concentration, conversion, standardization and normalization of gases.
• Origin and generation of emission factors and their use for the calculation of emissions.
2. Calculation of the legal minimum height of chimneys and related construction standards.
3. Simple computation of atmospheric dispersion: models employed, parameters involved, and their validation.

Module 3

1. Methods to prevent, reduce, disperse and remove air pollutants.
• Techniques and equipment used for the purification of atmospheric pollutants.
• Choice of the most suitable equipment system, depending on the characteristics of a given transmitter or installation.
2. Calculation of the efficiency rate of the main types of debugging equipment and its modification by manipulating the influential variables of the sizing of each equipment.

In this UC, the student must exhibit the knowledge referred to in "2. Learning Objectives" and the skills to solve problems and case studies similar to those solved during the classes. To solve problems, the student will need a calculator, only scientific calculators being allowed.

FREQUENCY TERM

Evaluation elements, respective weights, and minimum grades

1. st module: three mini-tests with equal weight
2. nd module: two mini-tests, weighting ⅔ and ⅓
3. rd module: two mini-tests with equal weight

The three modules contribute equally to the final classification (3 × ⅓).

Conditions for use in continuous assessment

Cumulatively reach or exceed:

• attendance minimum level (i.e. 75%);
• minimum rating per module (i.e. 7.5);
• passing weighted average grade (i.e. 10 values ​​on a scale from 0 to 20).

FINAL EXAM ASSESSMENT

The ESAC Student Achievement Assessment Regulation (RAAE-ESAC) describes the conditions for access to this type of assessment.

Conditions for achievement

In this UC, the final exam consists of a single test. The student will pass the final exam if the result of the test is at least 10 points on a scale from 0 to 20.

The exam result is a single value. Partial grades obtained in exam could not be used in a subsequent exam. If it is necessary to repeat the exam, students can reuse the grades they obtained in frequency.

Use of classifications obtained during the frequency

The provisions of §11 of Article 11 of the RAAE-ESAC of 2017·05·03, apply to students who have attended at least 75% of the total classes effectively taught. In this situation, the student will take the test(s) of the module(s) in which he is not exempt, plus those that he informs the teacher that he intends to take, and may even indicate that he pretends to do the complete exam. The undertaking of any test implies the replacement of the corresponding classifications previously obtained.

Reuse of ratings is possible only in the year the student got them.

RATING IMPROVEMENT

In tests to improve classification, no previous classification could be reused.

ALTERNATIVES FOR SPECIFIC SITUATIONS PROVIDED FOR BY LAW

The proposal of alternatives for the situations foreseen in the RAAE-ESAC will be carried out on a case-by-case basis, depending on the specific situation. The most common alternative is to take the test on another occasion.

NAO