It is used in sedimentation tanks of medium and large-scale wastewater treatment systems. The purpose of settling ponds is to settle the chemical or biological sludge in biological or chemically treated wastewater and obtain clarified water. During this clarification process, the sludge that settles on the pool bottom must be removed from the system. Since mud forms a large cover on the bottom of the pool, mud extraction needs to be done from certain points. That's why scrapers are used. Rotary Bridge Scrapers are suitable for use in circular sedimentation tanks. Thanks to the scraper pallets located at the bottom of the Rotary Bridge Scrapers, the mud accumulated at the bottom is directed towards the mud receiving compartments. At the same time, the foam and oil accumulated on the surface of the settling pool are directed to the oil-foam collection compartments, thanks to the scraper pallets.