COMBINE UNIT (GRAVITY BELT THICKENER + BELT PRESS)
The Combined System – is designed for one continuous dewatering of sludge from small water‐treatment plants urban and industrial.
This compact technique of a big simplicity of operation associates the functions of a gravity belt thickener and one belt filter press
Construction in stainless steel AISI 304L
Easy maintenance and supervision
Economic – Very low cost of operation
Complelety closed ‐ Detention of smells and noise pollutions
Advantages
Principle of Operation
Type of Installation
Model
Advantages
No need of gravity thickening tank, sludge storage tank or D. A. F. unit (space savings)
Dry solids concentration of the sludge, entering the belt press is stable (The gravity belt thickener regulates DS %) (optimisation of belt press performance)
Sludge flow to the belt press is reduced by 4 to 10 times (space and money savings)
use of a smaller belt press (space savings)
Peripheral equipment are common to the belt thickener and belt press (money savings)
No need for further polymer injection on the belt press (money savings)
Belt thickener can be mounted on top of the belt press (low space requirement and space savings)
Increase of the dry solids loading rate on the belt press by 30% (smaller belt press and space/money savings)
Dryness increase around 2% after the belt press
UNIQUE ON THE MARKET: LONG VERSION
No maintenance platform
Easy supervision of process (flocculation, thickening…)
Easy maintenance (greasing…)
Easy change of wear parts
The following items are common to the belt thickener and the belt press
Washwater booster pump,
Washwater piping
Air compressor
Control Panel
Polymer preparation plant
Polymer dosing pump
dewatered sludge conveying system
Concrete basement and filtrate discharge
Principle of Operation
Floculated sludge enters on the upper part of the equipment by means of a sludge inlet flange. The sludge divides up on the filtering belt in a uniform way.
The water contained in the sludge flows through the filtering belt and is then channelled in a tank. Plows arranged on the thickening zone create grooves in the sludge to ease the draining of the water.
The thickened sludge is then poured on a filtering belt of the pressing zone having a finer meshing to allow the pressing.
The second filtering belt of pressing comes to imprison gradually the sludge to evacuate residual water. After passage between rollers of various diameters to increase the pressing, the sludge is removed from the filtering belt and discharged in the disposal system (dewatering sludge pump, screw conveyor …).
Type of Installation
A) Compact Combine Unit – compact design (Gravity Belt Thickener and Belt Press in one single equipment)
B) Long version (gravity Belt Thickener -GBT in front of Belt Press -BFP)
C) High version (Gravity Belt Thickener-GBT on top of Belt Press-BFP)
Model
