What is Dewatering Screens


What is Dewatering Screens


Dewatering screens are also known as sieve bend screen, side hill screen, gravity screen or curved screens. UBO wedge wire type dewatering screens are designed to maximize capacity by using gravity and cross flow against the curved screen surface for removal of solids from a liquid process stream. Dewatering screens can be fabricated with most any slot opening, screen width or angle and are routinely mounted to a boxed style housing. 


Wedge wire screens are also suitable for high capacity filtration because they are self-cleaning, durable and reusable. Sieve bend screens orient the wedge wires perpendicular to the flow direction which allows water to drop through screen and be collected as wastewater while the angle and flow forces the solids (or branches) to slide over the smooth screen. This product is effective in wastewater treatment, dewatering systems and other similar solid separation applications as well. 


With wedge wire as screening media, the side hill screen can be used as pre-filters offering a high capacity and cost effective method of solids/liquids separation. It is also known as DSM static screen or gravity fed screen. UBO offers wedge wire sieve bend screen for the starch industry. Heavy duty welded profile wire curved screen is mainly used in mining and coal industry. 


Usages of Sieve Bend Screen for Dewatering


Sieve bend screens are used for mechanical separation of solid particles from liquids which slide down the panels. Hence it is also known as rundown screen or side hill screen. It is used in a wide range of industries such as:


-- Sugar Processing;

-- Starch industry;

-- Pulp & Paper;

-- Coal Mining & Quarrying;

-- Mineral Processing;

-- Cement.

-- wastewater treatment

-- sewage treatment

-- agriculture

-- food wastewater processing


Advantages of Sieve Bend Screen for Dewatering 


•  Non-clogging: the continuous slot formed by v shaped wedge wires ensures a two-point contact between the particles and the slot, which minimizes clogging.

•  High-precision slot sizes: precise slot sizes are available to meet customer´s requirements.

•  Surface filtration: the V shaped surface wires allow easy cleaning by mechanical scraping or back flushing.

•  Low pressure-drop

•  Strong construction: due to welding at each intersection, wedge wire screen is self-supporting


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