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Available Reports: 785

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Published 08/12/2019

Energy from Sewers (19/SW/03/1)

The opportunity for heat recovery from sewers and other forms of energy generation was investigated and a selection tool produced to identify heat recovery opportunities and support water utilities in developing clear business cases.

The literature review identified the scale of energy recovery technologies available to water services utilities.

Risks from blockages caused by heat exchanger or turbine heat recovery in the sewerage system were identified as were potential risks to wastewater nitrification (unless heat is taken from treated effluent).

The legal conclusion reached is that wastewater may be classified as waste, therefore permits may be required. 

Heat recovery from wastewater can make a significant contribution to the reduction of the carbon footprints in water utility service providers. The scale and opportunity for energy recovery from sewers is dependent on local conditions.

ISBN: 978-1-84057-884-3

Published 02/12/2019

Achieving 100% compliance with drinking water standards at point of use by 2050 - Intensifying Natural Processes (19/DW/13/4)

A review of innovative technologies for improving reservoir water quality was carried out. Six technology categories were shortlisted as having the greatest potential to be implemented in UK reservoirs and contribute to achieving 100% compliance with drinking water standards by 2050.

The six shortlisted technologies have been assessed against a range of criteria and a fact file was developed for each technology, assessing it against a range of criteria, highlighting case studies where relevant and suggesting next steps towards implementation. A roadmap was also produced for each technology, outlining the potential timeline to implementation.

One technological solution in particular, “Intelligent Reservoir Management”, was highlighted as having the most potential for development, and it is recommended that the water industry focusses its efforts in this direction, developing monitoring, data analytics and modelling tools to improve understanding of reservoir dynamics and enable efficient water quality management.

ISBN: 978-1-84057-882-9

Published 18/11/2019

Incidence and Causes of Repeat Bursts at Old Repairs (19/WM/08/71)

Analysis was undertaken at a national level to examine the proportion of mains bursts that are caused by failures of previous repairs, and how these vary between pipe materials and UK water companies.

Bursts identified as such were analysed to determine the likely cause of the failure; whether this was due to issues present at the time of the initial repair (e.g. poor workmanship), or to deterioration of the repair materials used.

Focusing on issues identified in the analysis, consolidated guidance has been prepared for maintenance operatives carrying out mains repairs in order to minimise the risk of future repeat failure.

ISBN: 978-1-84057-883-6

Published 13/11/2019

Best Practice for Sediment Management for Reservoirs and River Impoundments (19/RG/06/5)

Sediment management is important to water companies for operational reasons, but also to balance ecological concerns and allow regulatory compliance around these issues. Impounding structures, including those associated with water company activities, commonly alter sediment supply dynamics, which can lead to degradation of operational efficiency of assets. Sediment is a fundamental component of natural fluvial processes and impacts to sediment dynamics can have significant negative consequences for the geomorphology and ecology of a river and its anthropogenic uses.

The research has increased understanding of sediment management issues faced by the water industry and reviewed current UK guidance and regulations with respect to sediment management. Examples of good practice sediment management at impounding structures have been collated into  a comprehensive sediment management manual which consists of step-by-step guidance and 50 evidence sheets covering diverse topics from sourcing sediment for re-introduction to dealing with unforeseen problems.

ISBN: 978-1-84057-881-2

Published 25/10/2019

Smart Metering and Smart Networks for Leakage Management (19/WM/08/70)

The purpose of this UKWIR project was to gather information to identify and review the use of smart metering and smart networks for leakage management. To review the status of the water industry in the UK and Ireland and internationally both currently and looking towards the future with regards to how smart meters and smart networks can assist in improving and developing better leakage management. The project produced:

1) A report covering the detail of the current practices, looking forward to emerging solutions, identifying areas of opportunity for better leakage management, the benefits of smart networks and recommendations for UK and Irish water companies.

2) A technology scan reviewing smart metering and smart network products. The technology scan looked at both existing products that have had significant use by the industry and new emerging solutions some of which have the potential to transform the way water companies use smart networks for leakage management.

ISBN: 978-1-84057-880-5