Reports
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UV Inactivation of Cryptosporidium
Price: £150
Ref: 08/DW/06/20
ISBN: 1 84057 474 7
Published: 2008
Potential changes to the UK Drinking Water Quality Regulations could make Cryptosporidium inactivation using UV the most cost-effective treatment option in many situations. UV disinfection is well established in water tratment in the UK and elsewhere. There is now a substantial body of evidence to indicate that UV can provide high levels of inactivation of Cryptosporidium at doses typically used for water treatment disinfection. Turbidity below the regulatory limit of 1 NTU should not impair the disinfection performance of UV. Other water quality factors that could impair UV performance by affecting absorbance of UV or fouling of lamps can be dealt with effectively through operational control systems.
The report provides information and guidance on implementation of UV disinfaction to inactivate Cryptosporidium, based on a review of regulations and standards from other countries, particularly the USA.
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A Briefing on Microorganisms and Drinking Water Supplies - A Review of the Literature 2005-2006
06/DW/02/42 - ISBN: 1 84057 419 4This review of the literature for 2005-2006, reveals, as in previous years, that there are no immediate or foreseeable threats to the safety of drinking water supplies in the UK. The review recommends that the microbiol... More...
Price: £100
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Separation of Customers Night Use from Leakage in Night Flow Analysis
08/WM/08/37 - ISBN: 1 84057 472 0There is an increasing expectation that the district metered area (DMA) will provide a reliable measure of leakage for operational purposes. However, issues with DMAs are becoming increasingly apparent as DMA sizes decrease, ... More...
Price: £200
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Effects of Sewage Sludge Applications to Agricultural Soils on Soil Microbial Activity and the Implications for Agricultural Productivity and Long-Term Soil Fertility: Phase III
08/SL/01/6 - ISBN: 1 84057 473 9Sewage Sludge Applications to Agricultural Soils. This interim report summarises the results to date from a long-term study evaluating the effects of sewage sludge applications to agricultural soils on soil ... More...
Price: £100
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A Review of Ct in Water Disinfection
05/DW/02/37 - ISBN: 1-84057-377-5The inactivation rate of microorganisms by disinfection is commonly expressed as the product of the concentration (C) and the contact time (t). In this report, methods for determining the optimum Ct value have been revie... More...
Price: £100
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Tightening WwTW Emission Standards - A Review of the Treatment Technologies And Their Impact On Climate Change
02/WW/04/1 - ISBN: 1-84507 259 0This study examines the feasibility of meeting tighter effluent quality standards at wastewater treatment works. The impact of these tight standards on energy use, greenhouse gas (GHG) emissions and costs has been assessed. ... More...
Price: £150
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