Filtering sub-stations with continuous discharge

1. Substation with pneumatic transport of dusts to a rolloff container
2. Substation with two dusts suction lines and return-proof dumpers. Dusts are discharged into metallic boxes

1. Substation with only one discharging dusts line
2. Substation with roll-off container placed under the substation itself (suitable for space requirements)
3. Substation working in negative pressure
4. Substation working in negative pressure with n. 2 centrifugal fans