Screw Press/Volute Press
Screw Press is an unit Operation for treatment of WTP/WWTP. Screw Press is used to separate moisture from wet sludge which is coming from primary and secondary clarifier.
Process Description :-
Screw press is structured with a filter element that consists of two types of Rings a Fixed Ring and a Moving Ring and a screw that thrusts the filter element and transfers and pressurizes the sludge. The gaps between the Rings and the screw pitch are designed to gradually get narrower towards the direction of sludge cake outlet and the inner pressure of the filter element increases due to the volume compression effect, which thickens and dewaters the sludge.
Target Impurities :-
- Primary Sludge (Chemical Sludge)
- Secondary sludge (Biological sludge)
Advantages :-
- Easy operation
- Lower power consumption
- Low maintenance cost
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