Sludge drying beds provide a simple, low-cost method for sludge dewatering using natural evaporation and drainage.

How Sludge Drying Beds Work

Thickened sludge is applied to permeable beds. Liquid drains through sand/gravel layers while water evaporates from the surface, leaving dewatered solids.

Types of Sludge Drying Beds

Conventional Sand Drying Beds

Traditional design with sand and gravel underdrainage. Low cost, simple operation.

Paved Drying Beds

Impermeable beds with drainage channels. Easier sludge removal.

Wedgewire Beds

Synthetic media replaces sand. No media replacement needed, easier maintenance.

Geotube Drying Beds

Geotextile tubes contain sludge while allowing water to drain. Good for large volumes.

Design Parameters

• Loading rate: 40-80 kg TS/m²/year
• Drying time: 2-4 weeks
• Cake solids: 20-40%
• Climate considerations

Feiran EP Sludge Handling

We offer drying bed systems as part of complete sludge management solutions.

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