Coarse Screen

In wastewater treatment, coarse screens are used to protect pumps, valves, pipelines and other appurtenances from damage or clogging by large sized objects. Typically, coarse screens precede fine screens to protect them from damage from large debris. Some waste treatment plants may not require coarse screens, depending on the character of the waste.

According to the method used to clean them, coarse screens are designated as either manually cleaned or mechanically cleaned. Manually cleaned coarse screens are used frequently ahead of pumps in small wastewater pumping stations and sometimes at the headworks of small to medium sized wastewater treatment plants. Often they are used for standby screening in bypass channels for service during high flow periods, when mechanically cleaned screens are being repaired or in the event of power failure. Normally, mechanically cleaned screens are provided in lieu of manually cleaned screens to minimize labor required to clean the screens and to reduce flooding resulting from clogging of infrequently cleaned screens.

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PROTEC is a privately owned company established in Doha, Qatar engaged in the fields of Engineering, Supply, Construction, Installation, Commissioning, Operation and Maintenance of various types of equipment for the Water, Waste Water, Energy, and Industrial markets.


Head Quarters: Middle East,
Africa & CIS

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