Paddle dryer
Conductive dryer based on heated horizontal paddles rotating in the sludge solids
Primary sludge
Sludge produced from the initial sedimentation step of conventional municipal wastewater treatment
Glossary (P)
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Pathogenic
Disease-causing
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Perforated
Type of screen formed from sheet metal with punched holes
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Picket fence thickener
Type of gravity thickener employing a stirrer comprising a series of relatively closely-spaced vertical arms
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Plate press dryer
Conductive dryer based on a filter press
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Polyelectrolyte
Polymeric material containing ionic components
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Polymer
Alternative term for organic polyelectrolyte
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Psychrophilic
Bacteria or processes favouring temperatures below ~20 °C
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Putrescence
Decay or rotting
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Pyrolysis
Thermochemical treatment in the absence of water and air
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This page was last updated on 23 April 2021
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