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Reports \ Sludge and Waste Management

This section contains reports into the management of waste water and sludge and the resultant environmental effects.


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Recycling of Water Treatment Works Sludge

99/SL/09/1 - ISBN: 1 84057 167 5

The project assessed the suitability for recycling of water treatment works (WTW) sludges currently produced and recommends actions and changes needed to optimise and secure recycling opportunities. The study comprised the f... More...

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Beneficial Effects of Biosolids on Soil Quality and Fertility – Literature Review

99/SL/08/1 - ISBN: 1 84057 173 X

Application of biosolids, usually at a rate of 250 kg N ha -1 , will typically apply 5- 8 tds ha -1 , equivalent to 2- 4 t OM ha -1 . Regular application of biosolids at this rate will lead to slow but progressive increases i... More...

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E. coli in U. K. Mesophilic Anaerobically Digested Sludges

99/SL/06/4 - ISBN: 1 84057 170 5

The results of a repeat survey carried out at five operational sites confirm that Mesophilic Anaerobic Digestion can reduce numbers of E. coli by up to 4 orders of magnitude. The average log reduction recorded in the second s... More...

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A Survey of E. coli in UK Sludges

99/SL/06/3 - ISBN: 1 84057 168 3

A survey was undertaken to rapidly assess the effects of different processes on numbers of Escherichia coli in sludges from all parts the U. K All of the processes surveyed reduced the numbers of E. coli . Composting, lime ... More...

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Beneficial Effects of Biosolids on Soil Quality and Fertility

01/SL/08/2 - ISBN: 1 84057 216 7

The literature review and field study measurements have demonstrated that repeated biosolids applications have beneficial effects on a range of soil physical (plant available water supply, soil strength and porosity, and wate... More...

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