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The University of Southampton

CENV6158 Water and Wastewater Engineering 2

Module Overview

The module assumes a basic knowledge of conventional water and wastewater treatment systems. The course reinforces the importance of water and wastewater treatment for the protection of public health and draws attention both to the epidemiology of globally distributed water-borne and water-related disease and to growing concern over emerging micro-pollutants. A more rigorous treatment of reactor hydraulic design and reaction kinetics is provided, which is then built upon by reference to a number of treatment options and technologies. These cover the spectrum from low-technology decentralised systems to advanced and tertiary treatment. Consideration is also given to the linking of unit processes and technologies in ways that may provide more sustainable solutions in an energy and resource-limited world. Specific industrial wastewater treatment technologies are not covered in detail, but options for the effective management of trade effluents and any special requirements for on-site treatment of potentially toxic elements are dealt with. Process integration and optimization for industrial wastewater treatment are stressed for water use minimization, water reuse and water recycling. For water part the aim of the current course is to focus on some engineering aspects of water supply and distribution.

Aims and Objectives

Module Aims

- Provide you with a wide ranging experience of quantitative and qualitative processes and skills required for technology selection and process design in the field of water and wastewater - Offer you knowledge and encourage your consideration on water related diseases, public health and environment protection - Equip you to carry out process optimization and process integration using industry-standard software - Introduce you to the skills, techniques and processes required to effectively communicate your ideas to team members, professionals and lay persons.

Learning Outcomes

Knowledge and Understanding

Having successfully completed this module, you will be able to demonstrate knowledge and understanding of:

  • Basic reaction kinetics and hydraulics of reactor types
  • Engineering requirements for water collection and distribution systems
  • Factors influencing the choice of wastewater collection system
  • Importance of wastewater treatment in the global public health context
  • Treatment plant design and process selection
Subject Specific Intellectual and Research Skills

Having successfully completed this module you will be able to:

  • Perform advanced calculations for the design of different treatment operations
  • Simulate treatment processes and their integration using appropriate spreadsheet and modelling tools
  • Select treatment options on the basis of an in-depth knowledge of the engineering factors involved
  • Explain the engineering principles of enhanced mass transfer and biomess retention systems for wastewater treatment
  • Develop a process flow sheet for an advanced integrated wastewater treatment plant based on minimising resource inputs
  • Discuss why different wastewater treatment solutions are required depending on population, economic, climatic and geographical factors
  • Assess the options for wastewater collection and how these influence choice of treatment process
  • Calculate design parameters for a range of different treatment processes including lowintensity, alternative and advanced systems
  • Compare the merits of aerobic and anaerobic unit processes and process chains
  • Determine appropriate strategies for control and management of industrial pollutants
Transferable and Generic Skills

Having successfully completed this module you will be able to:

  • Learn and research independently
  • Analyse and evaluate data
  • Synthesise information and approaches
  • Apply design tools and parameters
Subject Specific Practical Skills

Having successfully completed this module you will be able to:

  • Prepare a preliminary design for the key components in a drinking water supply and distribution system
  • Carry out design calculations for individual wastewater treatment processes
  • Plan the overall design for an integrated wastewater treatment system


Water-borne and water-related disease. Global public health concerns - epidemiology and engineering; health and environmental implications of micro-pollutants and potentially toxic compounds. Basic kinetics and reactor types. Hydraulic characteristics and engineering applications of batch, plug flow, and mixed systems. Basic process and reaction kinetics. Wastewater. Collection systems and stormwater management. Cartage and vacuum, conventional and small-bore sewerage. Decentralised treatment. Pit latrines, septic tank, small-scale oxidation plants. Low-intensity and alternative systems. Waste stabilisation ponds, constructed wetlands, aerated lagoons oxidation ditches. Advanced biological oxidation. Enhanced mass transfer (pure oxygen, deep shaft). Biomass retention (fluidised and expanded bed, membrane bio-reactor, submerged aerated filters). Nutrient removal and tertiary treatment. Physico-chemical, biological including anammox. Anaerobic wastewater treatment limitations and applications, types of process. Advanced integrated systems. Trade effluent. Strategies for control including mass balance, fixed and flexible standards; on site treatment in relation to potentially toxic elements. Water. Surface water collection and storage reservoirs. Distribution systems. Demand, design and construction, leakage losses. Water conservation, recovery and reuse.

Learning and Teaching

Teaching and learning methods

16 double lectures, four 2-hour demonstration/practical sessions on software use and 2-hour problemsolving tutorial session. The lecture course is supported by a number of web-based resources in the form of presentations. Because of the specialist nature of the course additional reading material is recommended to back up individual lectures. Generally, the below books are recommended for reinforcement of the material covered: - Wastewater Engineering - Treatment and Reuse, Metcalf & Eddy, Inc., 2003 - Advanced biological treatment processes, Wang, Lawrence K. 2009 .

Follow-up work8
Completion of assessment task24
Preparation for scheduled sessions10
Wider reading or practice57
Practical classes and workshops4
Total study time150

Resources & Reading list

Wang, Lawrence K. (2009). Advanced biological treatment processes. 

Wastewater Engineering - Treatment and Reuse. 


Assessment Strategy

The coursework component consists of a chance to use two industry-standard pieces of software for process integration and optimisation. Pinch Analysis is a technique originally developed for optimising heat, but now extended to water usage. Aspen Plus is an advanced platform used in modelling all kinds of process technologies including water and wastewater treatment. The module includes lectures, tutorials and hands-on experience on these, while the assignment consists of a design task. Postgraduate tutorial sessions are provided to support this.


MethodPercentage contribution
Coursework 20%
Examination  (120 minutes) 80%


MethodPercentage contribution
Examination  (120 minutes) 100%


MethodPercentage contribution
Examination  (120 minutes) 100%

Repeat Information

Repeat type: Internal & External

Linked modules

Pre-requisite CENV3059

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