VOLUTE DUO™ treats sludge with 80 % inorganic content
Precious Metal Production, Germany
- VOLUTE DUO™ Dewatering Press
- Metalworking
- Chemically precipitated sludge
- Precious Metal Production, Germany
Rapid Dewatering of a Stored Sludge – Focus on High Throughput
Background
The factory has a long tradition in precious metal processing for the electrical engineering and automotive sector. This high-density chemical sludge contains a lot of metals with nearly any fibre content (0.5%). AMCON was invited to dewater about 10 – 15m3 of sludge from a storage tank which had been stored for several months. The task was to dewater it as quickly as possible, so the focus was on achieving a high throughput.
Installation Details
The VOLUTE DUO™ RVP-241 dehydrated 10 m3 of sludge in approximately 16 hours with a flow rate of 60 kg-DS/h and a dryness of more than 34%. In all tests, the flocculation was dosed only by means of an in-line mixer in the absence of the flocculation tank. The VOLUTE DUO™ with its small footprint and high flow rate met the needs of this type of plant, and therefore could soon replace other dehydration technologies typically used in the chemical industry.
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- Filter Drum of VOLUTE
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- Filtrate
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- Sludge Cake
Wastewater Treatment Plant Conditions and Performance Data
| Model: | RVP-241 |
| Sludge type: | Chemical |
| Total solids: | 18% |
| Inorganic contents: | 79.5% |
| Flow rate: | 0.33 m3/h |
| Feeding DS throughput: | 60.0 kg-DS/h |
| Cake DS content: | 34.7% |
| Neat polymer dosage: | 10.5 g/kg-DS |
| Capture rate: | 98.1% |