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Optimized sludge dewatering for PET bottle recycling using VOLUTE DUO™
Plastic recycling plant, Austria
- VOLUTE DUO™ Dewatering Press
- Plastic production / Recycling
- DAF sludge
- Plastic recycling plant, Austria
A plant involved in the recycling of waste, particularly plastics such as PET bottles, needed to upgrade its sludge dewatering process. The existing equipment, which included a filter press, required high maintenance and was less efficient in handling sludge with variable density and high fibre content.
Installation details
The VOLUTE DUO™ RVP-241 was used, with components including a polymer preparation station and dynamic mixer. The system demonstrated its ability to effectively dewater sludge, achieving up to 36.5% dry solids in the sludge cake at throughput rates of up to 61.8 kg DS/hr. Capture rate exceeded 99% and polymer dosing was optimised to 4.2-11 g of active ingredient per kg of dry solids. The technology proved highly suitable for this type of sludge, maintaining excellent filtrate quality and showing no signs of clogging throughout the operation.
Wastewater treatment plant conditions and performance data
| Details: | |
|---|---|
| Model: | RVP-241 |
| Sludge type: | DAF Sludge |
| Total solids (TS): | 5.40 % |
| Fibre content: | 17.0 % |
| Flow rate: | 0.80 m³/h |
| DS throughput: | 43.2 kg-DS/h |
| Cake solids content: | 35.8 % |
| Active poly dosage: | 4.2 g/kg-DS (with COEX88) |
| Capture rate: | 99.2 % |