Performance: The degree of fractionation and/ or microstraining depends on many factors; inlet consistency, spray pressure, inlet filler content, micron opening size, and particularly fines content of the fiber fraction. The following results can be expected Coarse impurities are separated out. All the water is microstrained.The fiber fraction is retained by the cloth and can be recovered. Changes in fiber content by the KROFTA Spray Filter are minimized so that subsequent clarifiers operate under a uniform load. The KROFTA Spray Filter improves the operation of clarifiers especially floatation ones, as it aerates the effluent making it more adaptable to floatation.
 

DE-INKING PLANTS : Separation of good fibers from fines and ink for a higher yield, less clay content in the stock, and reduced disposal requirements.

BOARD MILLS : Fractionation of the longer fibers from the effluent for use in the liner stock, while the fine fraction is used in the filler stock.

FINE PAPER and TISSUE MILLS :
Recovery of fiber through the fractionation of the effluent thus reducing total sludge volume. 
MICROSTRAINING of the EFFLUENT
for SHOWERS : Used to prevent the plugging of shower nozzles when either clarified or unclarified water is used.

SPRAY FILTER (SPRF)
Advantages :
 

Simple operation: few moving parts and very low rpm
Self-cleaning: built-in cleaning shower saves down-time
No fresh water required: clean ing shower nozzles are an open, non clogging type. Filtered water can be used in the shower
Easy maintenance: wide access door allows easy changing of the cloth and access to the interior
Inexpensive filter screens
Window wiper operated manually is located on inner side of the door.

Purpose : 
The KROFTA SPRAY FILTER is specifically designed for the filtration of effluents containing from 20 PPM to 5000 PPM of solids. A fine mesh cloth with openings
from 75-500 microns is used as the filter media, either to separate long fibers from clay and filler or as a safety filter for showers using clarified water. The KROFTA SPRF meets the
need for high throughput units which can handle wide variations of solids content. It is equipped with a cleaning shower which greatly reduces the need to remove the cloth for cleaning.