Bar screen

for wastewater treatmentcoarse screening

Bar screens can be installed at sewer pumping stations and at the headworks of wastewater treatment plants. Rake screens are intended for extraction of large and medium waste solids from industrial and municipal wastewater with subsequent unloading on a transporter or into a waste bin. The screens are intended for use in the wastewater with pH = 6.5÷8.5. Advantages of the Bar Screen - Resistance to mechanical and hydraulic overloads due to high tensile design in comparison with other types of mechanized screens; - High hydraulic efficiency achieved by using tear shaped bars that cause a pressure gradient to the mesh and across the bar spacing; - Tear shaped profile as well protects the screen from waste jamming inside the filtering mesh. By using this design, such blockages can be removed by rakes allowing the screen operate freely; - High reliability achieved by the absence of the rotating parts in the submersible part; - Submersible parts like casing, bars, chains and rakes are made of stainless steel to improve corrosion resistance in aggressive environments of wastewater; - Improved ergonomics: maintainability of the screen due to accessibility of the main units in operation and screen lifting without demounting. Automation of the Bar Screens Screen automation can be done according to different parameters: - Time period - Wastewater level difference upstream and downstream of the screen - Any customized program