Description
The EFD equipment is a sophisticated system designed for solid-liquid separation. It features a rotating drum screen, uniquely supported on one side by a supporting bearing and on the other by the drive mechanism. The system also includes a supporting tank, which doubles as a frame. This tank is specifically shaped to create an overflow chamber at the back of the drum and a discharge tank at the bottom.
In operation, wastewater flows toward the overflow chamber. Inside this chamber, the water level rises to a predetermined height, where a distribution system ensures the water is evenly spread over the external surface of the rotating drum. As water passes through the drum’s mesh, particles are left behind on the drum’s surface. On the opposite side, a scraper or blade in contact with the drum surface removes these particles, which are then gravity-fed to the discharge bin.
The drum houses an internal washing system, supplied with high-pressure water and directed toward the blade. This spray bar aids in detaching the screenings from the drum surface, allowing the blade to effectively remove them. The washing system is controlled by a solenoid valve and is operated via the main control panel.
To accommodate situations like drum clogging or peak flows exceeding the design flow, the tank includes an overflow system. Additionally, the tank side features an inspection cover, sealed with a rubber strip, facilitating easy cleaning.
The unit can be manufactured using either 304 or 316 stainless steel, depending on requirements.
Key advantages of the EFD system include:
- High efficiency in operation.
- Simplicity in design.
- Extremely straightforward installation.
- Very simple maintenance requirements.
In typical installation and operational scenarios, maintenance primarily involves replacing the blade after 2 years. Furthermore, the unit can be customized with a control panel, available in either electromechanical or PLC-controlled formats, to meet various operational needs and preferences.