Soundscape recorded in the control room of the Płaszów Sewage Treatment Plant. It is fitted with operator stations and a synoptic table to monitor and...

Soundscape recorded on the platform above the biological reactor. The plant has five biological reactors each with a capacity of 27,000 m3 and the size...

Sounds recorded at the place where treated sewage goes into the measuring chamber, just before it is discharged into the Drwina River. The parameters of...

Soundscape recorded at the biological sludge thickening station. Sludge generated in the course of biological and mechanical treatment is used for biogas...

Sounds recorded at a secondary tank, where the sludge from mechanical and biological treatment is mixed. The waste will be used for biogas production. The...

Sounds recorded in the building with heat exchangers which heat the sludge to a temperature of about 38oC. Heated sludge goes to four tanks which are separate...

Sounds recorded at the sludge dewatering press. Fermented sludge following biogas production goes here. Dewatering is necessary so that the waste can be...

Sounds recorded at the sludge dewatering mixer. Fermented sludge following biogas production goes there. The dewatered sludge contains about 25% dry matter...

Sounds recorded over the sewage inlet channel from Krakow central sewage system. On sunny days, approximately 165,000 m3 sewage goes through it daily,...

Soundscape recorded in the coarse grid hall. This is the first stage of mechanical sewage treatment. 30 mm grids retain larger solid impurities such as...

Sounds recorded above the main pumping station where sewage is pre-treated on fine screens. The pumps elevate the sewage to a height of 10 m and channel...

Soundscape recorded in the fine screen hall. Sewage goes through 6 mm fine screens. Every day, about 3 tonnes of impurities are collected from the sewage...