As soon as a certain pressure drop across the machine is reached (or optionally after a set time interval), the cleaning of the filter discs begins, whereby the solids that have deposited on and in the pile cloth media are removed again. Cleaning of the filter discs is effected by means of a suction pump.
HUBER Pile Cloth Media Filter RotaFilt® Pile fabric filtration for the tertiary and fourth treatment stage
Design and Function
The HUBER Pile Cloth Media Filter Rotafilt® consists of several rotatably arranged, disc-shaped filter elements. These are installed vertically and fitted with special filter bags made of innovative pile cloth. The pile cloth has a multi-dimensional structure and consists of a filter-active pile cloth layer and a supporting mesh.
The wastewater that enters the filter chamber flows continuously through the individual filter discs from the outside to the inside. Particulate matter is reliably retained in the pile cloth structure.
Due to the retention of solids, the filter resistance increases and the difference between the water levels on the wastewater and clear water side rises. At a certain pressure loss, the gradual cleaning of the filter discs begins. During this process, retained solids are reliably and effectively removed from the rotating filter elements via suction bars.
The round filter discs ensure that no dead zones are created during the cleaning process. In order to prevent the basin from silting up, the settled sludge at the bottom of the basin is sucked out at regular intervals by suction lances.
Technical data:
- Available sizes: 2 - 35 (number of discs).
- Throughput rates up to 3,200 m³/h per machine.
- Feeding either by gravity or by pump.
The benefits of the HUBER Pile Cloth Media Filter RotaFilt®
- Only one suction pump per machine required.
- Suction pump dry-mounted for easy accessibility.
- Increased effective filter area due to circular arc geometry on inner and outer diameter.
- Therefore no dead zones during filter cleaning.
- Maximised free filter area and minimal weight due to the innovative honeycomb structure of the filter elements.
- Cost advantages due to optimised disc diameter (2700 mm).
- Minimum system footprint and best possible utilization of common tank depths.
- Easy modular retrofitting of additional filter discs possible
- Quick and user-friendly installation and removal of filter bags and filter elements.
- Easy installation and removal of the suction modules.
Many advantages through microfiltration with pile fabric
- High separation efficiency combined with high hydraulic capacity.
- Insensitive to sudden peak loads.
- High operational reliability, even under overload.
- No separate flushing water required, thus no flushing water tank required.
- Continuous operation (no interruptions for cleaning).
- Low pressure loss during operation (5-30 mbar, hydrostatic filtration possible without lifting).
- Minimal system footprint.
- Minimised operating and energy costs.
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