WATER QUALITY AND WASTE WATER TREATMENT

SHE Level 5
SCQF Credit Points 15.00
ECTS Credit Points 7.50
Module Code MMH124004
Module Leader Jiaqian Jiang
School School of Computing, Engineering and Built Environment
Subject Civil Engineering and Environmental Management
Trimester
  • B (January start)

Summary of Content

This module will examine water quality and provision of potable water in the UK. It will explore technologies for the treatment of waste waters and the control of pollution of inland and coastal waters. The approach will consider the measurement of water and characterisation of waste water through its physical, chemical and biological properties. Screening, grit removal, primary sedimentation, secondary treatment by activated sludge, trickling filters, bio-filters, and advanced tertiary treatment processes will be considered.

Syllabus

The taught syllabus will cover the following areas:- Physical, chemical and biological characteristics of waters and waste waters. Procedures for sampling and analysis. Outline of pollution of water from point and diffuse sources. Technologies for flow measurement: open surface flows by weirs, flumes, gauging stations; piped flows by venturi constrictions, magnetic flow meters, orifice plates, positive displacement meters, ultrasonic flow meters. Technologies for treatment of municipal, industrial, agricultural and landfill effluents. Preliminary treatment: screening; grit removal by channel and cyclones, comminution; Preliminary treatment by sedimentation, flotation, removal of grease/scum, desludging. Secondary treatment by activated sludge plants, aeration by compressed air impellers, ICI deep shaft process, pure oxygen process, oxidation ditches and ponds, fixed film systems, trickling filters and RBC's. Sludge treatment and disposal: aerobic and anaerobic digestion, dewatering, stabilisation, composting, incineration and landfill. Effects of Urban Wastewater Treatment Directive. Advanced/tertiary treatment by denitrification, phosphorus removal, ion exchange, carbon absorption, disinfection by chlorine, ozone, UV irradiation. Technologies for small-scale treatment of waste waters; septic tanks, biofilters, disposal to land/reed beds. Modelling techniques for waste water treatment processes. Design procedures for effluent water outfalls, plume dispersion models. Protection and remediation of polluted water courses. The regulatory control for provision of drinking water and wastewaters. Drinking Water and Surface Water Directives. Groundwater protection and nitrate Directives. Coastal emissions and international agreements on discharges, including Hazardous substances.

Learning Outcomes

On completion of this module the student should be able to:Describe the physical, chemical, and biological characteristics of waters and waste water. (A1, A3) Explain the main sources of water pollution and their likely effects on the ecosystem and on human health and well-being. (A3,A7,A8,B4)Appraise technologies for collection, treatment and disposal of waste water. (A8,A10,B1,B5)Distinguish between water treatment unit processes for treatment of domestic, industrial, and agricultural effluents. (A9, A10)Select appropriate technologies for the collection, treatment and disposal of landfill leachates. (A9,A10,B5,C2,C3)Use appropriate process models, water quality models and geographical and management information systems. (C5,C6,D3)Demonstrate the key legislation relating to water supply and efficent disposal in the UK (A1,A5, A7)

Teaching / Learning Strategy

The strategy for delivery of this module is through lectures, computer aided learning and laboratory practicals. The lectures will be aimed at presenting the fundamental theory and background to the subject. Laboratory practicals are an important part of the module and skills in treatment techniques will be developed during these sessions. IT skills will also be developed using specific water quality software. Learning and teaching strategies will be developed and implemented, appropriate to students' needs, to enable all students to participate fully in the module.

Indicative Reading

"Wastewater Engineering", (3rd eidtion), Metcalf and Eddy, Mcgraw-Hill, (1991). "Biological Wastewater Treatment Systems, Theory and Operation", Horan, N. J., J Wiley & Sons, (1990). "Handbook of Advanced Wastewater Treatment", Culp R. L., Werner, G. M. and Culp G. L. Van Nostrand, Reinhold, (1978). "The Environmental Protection Act 1990", HMSO, (1991). "Hazardous Waste Management", LaGrega, M. D., Buckingham, P. L., Evans, J. C., Environmental Resources Management Group, McGraw-Hill, (1994).

Transferrable Skills

- Verbal communication skills in presentations both formal and informal. (C5,D1) - Data handling and interpretation. (D2,D3) - Use of modelling packages. (D3) - Presentation skills. (D1) - Group working skills. (D4) - Essay/Report writing. (D1,D6) These PTS will be encouraged and developed throughout this module and it is expected that student confidence and ability will be enhanced by this experience.

Module Structure

Activity Total Hours
Seminars (FT) 6.00
Independent Learning (FT) 86.00
Tutorials (FT) 6.00
Practicals (FT) 12.00
Lectures (FT) 24.00
Assessment (FT) 16.00

Assessment Methods

Component Duration Weighting Threshold Description
Coursework 3 n/a 25.00 45% Coursework 3 - Essay - 2000 words
Coursework 2 n/a 10.00 45% Coursework 2 - Oral presentation
Coursework 1 n/a 15.00 45% Coursework 1 - Poster presentation
Exam (School) n/a 50.00 45% Class Test - Time Constrained Test