The vertical sieve is responsible for separation and removal of solid contaminants from sewage. The separation takes place on a straining sieve. After the procedure, its perforated basket is automatically cleaned with a brush installed inside the device. Screenings are transported on the vertical spiral conveyor where the material is dewatered for the first time. Final dewatering process takes place when the contaminants are pressed and then discharged. The construction of vertical sieve designed by Ekowater allows to carry out hermetic process of straining, transferring, pressing and discharging screenings.