Wastewater Treatment and Sewerage
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Impact of Intermittent Discharges on the Microbiological Quality of Shellfish
Price: £50
Ref: 07/WW/18/1
ISBN: 1 84057 438 0
Laboratory and field investigations examined sewage effluent impact on microbiological shellfish hygiene parameters (faecal indicator organisms). Shellfish types examined were: wild mussels (Mytilus edulis) (all investigations) and Pacific oysters (Crassostrea gigas) (laboratory only).
The investigations demonstrated rapid uptake of organisms following contamination, producing flesh concentrations exceeding those recommended for human consumption (>46,000 Escherichia coli/100 g). Decay functions were fitted to subsequent depuration patterns.
In microcosms, mussels showed: (i) higher concentrations following contamination and (ii) more rapid depuration than oysters. Concentrations in flesh were correlated with those in overlying water (r>0.87). In the field, response was similar irrespective of overflow spill magnitude. Depuration was slower and statistical relationships between concentrations in shellfish and overlying water were weaker (r<0.66).
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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...
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Performance of Fast Butt Fusion Jointing
99/WM/02/7 - ISBN: 1 84057 150 0A high productivity butt fusion welding process has been developed by Fusion Group. The process was evaluated on PE80 and PE100 pipe materials in sizes up to 400mm and compared against butt fusion joints prepared under conven... More...
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Estimating Legitimate Non- Household Night Use Allowances
99/WM/08/26 - ISBN: 1 84057 165 9This study has produced a robust and generalised methodology that can be used by individual companies to more accurately determine legitimate non-household metered use. This should improve the accuracy of regulatory reporting... More...
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A Review of Leakage - Updating Managing Leakage Methodology and Theory
97/WM/08/10 - ISBN: 1 84057 036 9The first update of 'Managing Leakage', the 1995 water industry report. Economics of leakage methodology, both short and long term is developed in detail. There are case studies on whole- life costing. Seven key areas of UKWI... More...
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