The rotary drum screen is perfectly adapted to the pre-treatment of highly loaded wastewater (industrial waste cleaning grit, sand waters, etc…). It is recommended for station receiving rainwaters (presence of sands) and upstream of membrane process (the perforated sheet steel allows to retain fibrous materials).
ADVANTAGES
- Internal feed
- Designed with or without integrated compactor
- Equipment fully covered with inspection hatches
- Particularly effective against highly loaded effluents (e.g. industrial effluents)
- Particularly effective against highly loaded effluents (e.g. industrial effluents)
- Filtering length: 1 000 to 3 000 mm
- Material : stainless steel 304l or 316L
OPERATING PRINCIPLE
The rotary drum screen consists of a screening drum (filtration part) and of a spiral attached to the inside of the screen to allow the transfer and removal of the waste.
The process consists of one and/or two main steps: screening and compacting.
The raw wastewater is fed to the inside of the drumand passes through the mesh of the sieving drum to the outside of the drum. Screened waste are transported to the end of the drum by means of spiral fixed to the inside of the drum.
The filtration grid is made of round holes perforated plates.
RANGE and OPTIONS
A range of 7 rotary drum screens with or without compactor to handle flows up to 500 m³/h depending on the screening mesh.
- Type T/TC: 840 to 3150
- Flow rate *: 35 m³/h to 500 m³/h
- Input diameter: 80 mm to 400 mm
- Output diameter: 100 mm to 450 mm