Dri-Boost Plow™ gravity deck upgrade

Boost your belt filter press cake dryness by
1-5% and/or throughput up to 25%

Alfa Laval Dri-Boost Plows™ (or chicanes) are a new innovation in wet end belt filter press and gravity belt thickener performance. Their unique and patent pending design not only “splits” the sludge, but also rotates in a way that releases water, faster. This means that more work is done on the gravity deck, making it possible to get a higher final dryness or additional throughput at the same dryness. 

This gravity deck upgrade is available for most belt filter presses or gravity belt thickeners (including competitor designs) and comes standard on the AS-H Belt Press KPZ. 

Benefits of upgrading from traditional chicanes to Dri-Boost Plows:

• Increase final cake dryness by 1-5% depending on process conditions, reducing sludge volumes and associated expense
• Increase belt filter press / gravity belt thickener throughput by as much as 25% if no increase in dryness is needed
• Fewer plows to maintain

The Dri-Boost difference:

Traditional plows are set up in offset rows along the length of the gravity deck. They often have a wedge shape to them and perform the simple task of pushing the incoming sludge into rows and then continuing to split and combine these rows down the length of the deck. This motion helps release water, and by the end of the deck a decent amount of gravity dewatering has occurred.

While this method works ok, the sludge does not see a lot of motion from top to bottom leaving dewatering potential untapped.

The Dri-Boost Plow (chicane) system's unique shape not only splits the flow of the incoming sludge, but also turns it over onto itself. This motion releases more water, faster resulting in a higher dryness by the end of the gravity deck.

This means that for a belt press, when the flow enters the pressure section it can achieve a higher final solids content as it has less water to remove during the time it spends under pressure.  Alternatively, the value can be captured by a higher machine capacity at the original final dryness.

This upgrade package includes:

• Dri-Boost Plow™ (note: number of Dri-Boost Plow™ will be fewer than traditional plows)
• New rods and seals
• Gravity deck grid strip replacement
• Installation
• Optimization of the belt filter press to maximize the performance improvement