HUBER Disc Thickener S-DISC Unique sludge thickener for efficient sludge treatment at plants up to 200,000 PE
- Compact, enclosed unit
- Dependable performance with minimal supervision
- Low operation costs
- High throughput capacity up to 176 GPM /40 m³/h
Sewage Sludge Thickening
Sewage sludge, particularly secondary sludge, is characterized by low solids concentrations and high volumes. Effective sludge thickening is essential as a preliminary step for the efficient treatment of sewage sludge, such as in digesters, and is also crucial when liquid sludge needs to be transported for further processing or utilization.
The selection of the thickening process is determined by the following key criteria:
- Performance and efficiency
- Reliable operation
- Easy maintenance and operation
Design and Function
A slightly inclined, slowly rotating filter disc covered with a filter cloth separates flocculated sludge from filtrate. A baffle plate distributes the inflow evenly across the entire filter radius.
Sludge liquor collects on the bottom section of the filter disc so that a low hydrostatic pressure develops enhancing sludge liquor drain-off.
Flexible, supported plows break up and move the sludge layer on the disc, creating furrows that allow water to drain more easily through the filter cloth, thereby improving the filtration process. A scraper at the sludge discharge outlet then removes the thickened sludge from the disc.
The filter cloth is cleaned by a spray bar so that the solids are washed back into the sludge to ensure the filtrate water is clear.
Efficiency
Efficient use of water
The HUBER Disc Thickener S-DISC requires minimal wash water at a very low pressure. Additionally, the need for external wash water can be completely eliminated by using the filtrate for cleaning the filter.
- Saving water resources
- Minimizing the burden on local water treatment facilities
- Reduction of operating costs
- Hydraulic load reduction
- Virtually no additional demand for electrical energy for pressure increase
Customized installation conditions
With 80% of the filter surface of the HUBER Disc Thickener S-DISC being continuously utilized, a highly compact and space-efficient machine design is achievable.
- Minimal space requirements for installation
- Ideal as mobile installation
- Easy container installation
- Easy retrofitting
- No need for foundations or service platforms
- Variable inlet and outlet arrangement
The benefits of HUBER Disc Thickener S-DISC
Performance and efficiency
- Sludge volume reduction > 85 %, typical thickening results > 6 % DR
- Low polymer consumption, Specific power consumption < 0.03 kWh/m³
- Minimum operator attendance requirements of less than 10 minutes a day
- Wash water demand < 5 % of sludge throughput
- Wash water pressure < 3 bar
- Filtrate water can be used as wash water for the spray bar.
- Typical separation efficiency > 97 %
Reliable operation
- Robust design
- Stainless steel filter cloth for long life
- Slow filter rotation < 5 rpm
- Low maintenance
Easy and safe to operate
- No need for lubrication
- Easy access for inspection, maintenance and operation
- Proven in hundreds of installations
- Throughput, polymer dose and filter rotation speed can be adjusted to optimize the degree of thickening
- Oversized openings to facilitate maintenance and inspection
- The encased thickener is designed for treating strongly odorous sludge, providing protection for operators by preventing exposure to harmful spray water aerosols
- Automatic control technology
- Designed for continuous, unattended operation, functioning 24 hours a day
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