As sludge treatment specialist, we have developed various concepts for different sludge dewatering applications. DEWA offers a full range of dewatering equipment that provides superior performance, mechanical reliability, long-life durability and user friendly features.
DEWA belt filter press design is one of the most efficient sludge dewatering units which can be applied through organic and inorganic sludge’s to achieve required results at minimum operating cost.
Sludge dewatering systems generally include a pre-dewatering section (BTN) for thin sludge suspensions. It not only reduces the sludge volume, but also increases enormously the capacity of subsequent dewatering units.
The DEWA belt filter press can handle very thick sludge’s and for this an independent gravity drainage deck is provided to pre-thicken the sludge before it enters the main wedge and pressing sections.
Basically in the BFP, the sludge dewatering is achieved by bringing the sludge between the two moving belts which in turn moves on the varying sizes of rollers keeping belts under tension through pneumatic (or hydraulic) cylinder system which results in squeezing out the liquid trapped between the solids and withdrawn separately through the filtrate trays. An adequate arrangement is provided for auto belt tracking / tensioning which makes the system operator friendly.
DEWA Belt Presses have been used in all five continents with great success in a wide variety of applications - from industrial and municipal water & waste water treatment to food processing, slaughter house applications and refineries.
- FPD “Multi-Stage” Series
DEWA FPD mulit-stage series sludge dewaterer is a combination of a BTN (heavy duty belt thickener) and a FP (belt filter press), and is designed for the most demanding, large capacity applications. The FPD multi-stage dewaterer is easy to modify according to the characteristics of the sludge and throughput and cake solid requirements.
- BTN-FP ”Combo” series
DEWA Combo unit: By combining the DEWA BTN extended gravity belt thicker and the DEWA FP dewatering unit into one configuration, DEWA has managed to make sludge feeds as thin as 0.5% d.s., and dewater right up to 25% dry solids in one process. This configuration is an ideal solution for high throughput applications. In addition, the feed sludge only has to be mixed with polymer once, so polymer consumption can be halved as well. This compact and odour free unit is also the most convenient solution where space is a premium.
- N-PD “Universal” Series
The DEWA N-PD belt filter press is the most flexible solution for any sludge dewatering application. It has an independent gravity belt thickener which allows users to adjust the belt speed of the gravity section independently. It is also possible to select four different belt routes for the pressing belts, a feature which further increases the flexibility of the product.
- P-C range “Mini” Series
The DEWA P-C “Mini” sludge dewatering unit is ideal for small scale sludge dewatering applications in both municipal and industrial treatment plants. This twin belts design has a small gravity drainage section followed by wedge and pressing sections.