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Rotary Mesh Screen RoDisc® |
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Micro screening of wastewater
- Gravity system with a large separation surface
- Removal of activated sludge flocks after secondary clarification tanks
- Treatment of circulation water and service water
- Preliminary filtration in drinking water recovery from surface waters and in UV disinfection applications
- Advanced phosphate reduction through preceding precipitation and flocculation
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The RoDisc® Micro Screen has been designed for fine screening of up to 1500 m³/h with a mesh size down as small as 10 µm. The screen is especially suited for applications where a very high filtrate quality and large filter surface area is required. Due to its small space requirement and modular design the RoDisc® Micro Screen can be tailored to suit any specific site requirements.
The RoDisc® Micro Screen works on the basis of the well-proven drum filter principle. The screen consists of horizontally arranged rotating filter discs installed on a central shaft and are submerged by up to 60% with each filter disc consisting of individual stainless steel segments covered with a square mesh. The wastewater to be treated flows through the segments from inside to outside and the filtrate is discharged at the inlet end of the screen. The filter discs remain in rest position during the filtration process. The solids settle by gravity on the disc surfaces themselves, which leads to gradual blinding of the square mesh with the retained solids as the filtration process progresses, resulting in an increasing pressure differential. When the predefined maximum pressure differential has been reached, the solids are removed from the filter surfaces by the slow rotation of the filter discs combined with a spray nozzle bar. The spray nozzles are pump fed utilising some of the filtered wastewater. The removed solids are washed into a trough situated below the segment openings prior to being discharged and the filtration process runs on continuously whilst the filter discs are being cleaned.
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HUBER - WHERE QUALITY AND SERVICE SPRING TO MIND
Huber Technology UK, Units C and D Brunel Park
Bumpers Farm, Chippenham Wiltshire SN14 6NQ
Phone +44 1249 765000, Fax +44 1249 449076, E-mail: rotamat@huber.co.uk |
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