Presentation
The BIOTRADE disc filter is a tertiary treatment unit designed to remove suspended solids (SS) from treated wastewater.
It consists of a series of horizontally mounted, rotating filter discs. Each disc is made up of fan-shaped filter panels fitted with removable polyester filter cloth.
The filtration mesh size can be as fine as 10 µm, enabling the high-precision filtration required for wastewater treatment plant upgrades, treated water reuse projects, or the reduction of suspended solids in the final effluent.
The system is distinguished by a compact structure, simple operation, a small footprint, and low energy consumption.
Functioning
Raw water enters the central drum through an opening at the end of the unit and then distributes into the filter discs via connecting ports.
The water then passes through the filter media from the inside out. Suspended solids are retained by the filter fabric, while the filtered water is discharged.
As filtration proceeds, impurities accumulate on the fabric. When the water level reaches a preset value, the drum begins to rotate and the backwash system activates automatically.
Pressurized water then cleans the surface of the filter discs. The dislodged impurities fall into the sludge collection trough and are subsequently discharged through the drain line.
Composition
- Raw water intake assembly: receives effluent from the self-flocculation tank.
- Central drum: handles water intake and distribution to the filter discs.
- Filter discs: composed of fan-shaped panels with polyester filter cloth.
- Backwash system: high-pressure pump, spray nozzles, safety filter, sludge collection trough, and drain line.
- Drive system: gear motor, drive sprocket, and drive chain.
- Control system: manual or automatic operation, featuring water level detection and remote monitoring capabilities.
- Supports and components: 304L or 316L stainless steel, depending on the configuration.
Technical Specifications
- Fine filtration with 10 µm mesh.
- Polyester filter cloth.
- 304L or 316L stainless steel construction, depending on requirements.
- Disc diameters of 2000 mm or 3000 mm, depending on the model.
- Flow rates from 30 to 1100 m³/h, depending on configuration.
- Number of discs: 1 to 20, depending on the model.
- Automatic backwashing via high-pressure pump.
- Withstands backwash pressures up to 7.5 bar.
- Noise level below 75 dB.
- IP65 gear motor; power supply: 380 V / 50 Hz / 3-phase.
- Sizing may vary by ±10% depending on the nature of the effluent.
Applications
- Modernization and renovation of existing wastewater treatment plants.
- Tertiary treatment of municipal wastewater.
- Reuse of treated water.
- Closed-loop cooling water for industrial sites.
- Pulp and paper, printing, and dyeing industries.
- Aquaculture and other water treatment applications.