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Rotary press

A rotary press dewaters sludge using a cylindrical vessel housing two slowly-rotating (at < 2 RPM) circular permeable screens which are sandwiched together. The sludge enters the channel formed between the two screens and follows a circular path around the channel at a small applied pressure, the water (or filtrate) passing through the screen as the sludge passes along the channel.

Rotary press related videos

Sludge solids separation theory Source: Judd Water & Wastewater Consultants / YouTube

Sludge solids separation theory

Sludge solids separation theory − a brief introduction to the theories around sludge sedimentation, cake filtration and cake compression.

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Rotary press features and blogs

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Feature

Anaerobic digestion optimization through thermal hydrolysis pre-treatment

Pre-treatment of sludge by thermal hydrolysis upstream of anaerobic digestion is used to improve AD efficiency. A study looked at (pre-)commissioning data for a full-scale AD installation undergoing upgrading with TH to assess the basis for optimisation.

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