ENVR07042 2019 Water and Wastewater Treatment Theory
This module describes the nature, sources and composition of contaminants in water, municipal and industrial wastewater as well as end products arising from treatment. The module explains how to monitor and quantify pollutants and monitor the efficiency of technologies employed to ensure compliance with legislation. The module also explains the function and basic design parameters of the most commonly used processes for the treatment of water, wastewater and residuals (sludge).
On completion of this module the learner will/should be able to;
Distinguish between preliminary, primary, secondary and tertiary wastewater treatment processes and assess the capacity of existing treatment processes based on established design criteria.
Illustrate the function of the main treatment processes in typical water treatment plants and assess the capacity of existing processes based on established design criteria.
Discuss the relative advantages and disadvantages of a range of water and wastewater sludge treatment processes and how these residues should be managed.
Assess the appropriateness of a range of intensive and extensive wastewater treatment processes appropriate for on-site treatment of wastewater from domestic and small commercial and industrial operations.
Discuss the use of the monitoring of critical control points and the application of a management system approach in the operation and management of water and wastewater treatment facilities.
Teaching and Learning Strategies
This module will be delivered full-time (or part-time for online modules). This will include lectures, augmented by independent learning and directed learning. This approach is expected to address student learning needs. Moodle will be used as a repository of educational resources and as a means of assessment (e.g. quizzes, uploading assignments and journals).
Module Assessment Strategies
This module is 50% Continuous Assessment and 50% Final Exam
There are two separate MCQs worth 15% each.
There is one continuous assessment assignment (20%) (either individual or group) requiring the practical application of the theory to either the design of a new water or wastewater system and/or assessment of an existing facility based on design or monitoring data and/or site visits to installations.
Repeat Continuous Assessment and/or Final Theory Exam.
1: Distinguish between preliminary, primary, secondary and tertiary wastewater treatment processes and assess the capacity of existing treatment processes based on established design criteria.
Wastewater treatment processes (preliminary, primary, secondary and tertiary; suspended and attached growth).
2. Illustrate the function of the main treatment processes in typical water treatment plants and assess the capacity of existing processes based on established design criteria.
Water treatment (coagulation, flocculation, settlement, filtration, disinfection, fluoridation, storage, and distribution).
3. Discuss the relative advantages and disadvantages of a range of water and wastewater sludge treatment processes and how these residues should be managed.
Sludge characteristics and various treatment processes - thickening, dewatering, digestion, composting, alkali stabilisation, thermal drying, nutrient management planning.
4. Assess the appropriateness of a range of intensive and extensive wastewater treatment processes appropriate for on-site treatment of wastewater from domestic and small commercial and industrial operations.
Assessing the suitability of a site for a proposed on-site wastewater treatment system. Septic tank systems and percolation areas. Secondary biological treatment systems - package treatment plants, rotating biological contactors, sequencing batch reactors, constructed wetlands.
5. Discuss the use of the monitoring of critical control points and the application of a management system approach in the operation and management of water and wastewater treatment facilities.
Practical issues associated with the operation of treatment facilities, including on-going monitoring to assess plant efficiency and effectiveness, technical trouble-shooting, legislative compliance, energy management, cost controls, health and safety issues and overview of management systems applicable to the operation of water and wastewater treatment plants.
Coursework & Assessment Breakdown
|Title||Type||Form||Percent||Week||Learning Outcomes Assessed|
|1||MCQs and Class Discussions||Formative||Multiple Choice||- %||OnGoing||1,2,3,4,5|
|2||MCQ1||Continuous Assessment||Multiple Choice||15 %||Week 3||1,2|
|3||Site Visits & Team or Individual Assignments||Continuous Assessment||Written Report||20 %||OnGoing||3,4,5|
|4||MCQ2||Continuous Assessment||Multiple Choice||15 %||Week 12||1,2|
End of Semester / Year Assessment
|Title||Type||Form||Percent||Week||Learning Outcomes Assessed|
|1||Final Theory Exam||Final Exam||Closed Book Exam||50 %||End of Semester||1,2,3,4,5|
Full Time Mode Workload
|Workshop||Not Specified||Review of Site Data/Reports/Site Visits||7.5||Twice Per Semester||1.00|
|Independent Learning||UNKNOWN||Self-study, research, reading and reflection||4||Weekly||4.00|
Gray, N.(2017) Water Science and Technology: An Introduction. 4th Edition. CRC Press
Tchobanoglous, G., Burton, F.L.;.,Stensel, D. (2014) Wastewater Engineering: Treatment and Resource Recovery, Volume 1 McGraw Hill.
von Sperling, M., (2019). Basic Principles of Wastewater Treatment. IWA Publishing.
Hammer, M.J.,Sr., Hammer, M.J, Jr. (2013) Water and Wastewater Technology 7th Edition Pearson Education Limited.
Relevant extracts from Irish Environmental Protection Agency (EPA) Water and Wastewater Treatment Manuals
Irish EPA (2018) Draft Code of Practice - Domestic Wastewater Treatment Systems (Population Equivalent < 10) (Nov. 2018)
Irish Water Technical Specifications
Technical specifications for a range of On-Site Wastewater Treatment systems
Licences and Permits issued for wastewater treatment facilities
Irish EPA reports on the performance and management of water and wastewater facilities
Relevant links are available on the subject Moodle Page
Compulsory to attend all site visits to water and wastewater treatment facilities