Reports
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Economic Level of Service for Sewer Blockages
Price: £250
Ref: 10/WW/21/14
ISBN: 1 84057 568 9
Over 160,000 sewer blockages are reported each year in England & Wales; or about 0.5 blockages per kilometre of sewer per year. These lead to a wide range of service failures including property flooding and pollution. About 75% of the blockage management activity is in reaction to failures, although the amount of proactive work to prevent blockages has increased in recent years.
This report provides guidance in recommended reactive and proactive approaches to blockage management including newly emerging techniques. Improved reactive blockage management techniques include better blockage clearance tools and technologies for inspecting the sewer after clearance to identify residual problems. Innovative proactive techniques include programmes of regular cleansing, level monitors and automatic flushing devices. There is also a strong role for Network Protection Officers to discourage the discharge of material that can cause blockages.
The project outputs include a strategic optimisation tool (BELS) that can be used to identify how to achieve either the least cost to the company to achieve a target level of service or the best value level of service considering costs to the company, customers and other stakeholders.
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UKWIR/EA Definition of Key terms for Water Resources Practitioners
97/WR/14/1 - ISBN: 1 84057 001 6A joint UKWIR/Environment Agency report that allows easy access to over 200 definitions and abbreviations. Produced for the purpose of clear communication on a common basis in the UKWIR regulatory work on water resources. In... More...
Price: £10
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On- line Instrumentation Standards and Practices
00/PC/03/1 - ISBN: 1 84057 180 2This report deals with the management and exploitation of on- line measurement in the UK water industry. The results from a survey of the perceptions of managers and practitioners are presented along with other industry data.... More...
Price: £400
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The Environmental Impact of Phosphorus from the Agricultural Disposal of Sewage Sludge - Stage 3
97/SL/02/4 - ISBN: 1 84057 013 XLaboratory, lysimeter and field studies continue to show wide variability the potential bioavailability of phosphorus in sewage sludge. Under operational rates of application, losses of phosphorus in run-off from plots recei... More...
Price: £100
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UKWIR/EA A Unified Methodology for the Determination of Deployable Output from Water Sources - Volume 1
00/WR/18/1 - ISBN: 1 84057 198 5This joint UKWIR/ Environment Agency project examined current practices for determination of surface water and ground water deployable output (DO) and concluded that a unified approach was both desirable and feasible. However... More...
Price: £150
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Exploring the Cost Benefit of Separating Direct Surface Water Inputs from the Combined Sewerage System
09/WM/07/13 - ISBN: 1 84057 533 6Urbanisation and climate change are increasing the volume of rainfall discharging to the public combined sewerage system, resulting in increased risk of flooding and pollution with unnecessary pumping and treatment costs.
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