Gravity Drain Table
The Krofta’s Gravity Drain Table (GDT) is designed for efficient gravity-based sludge dewatering through a continuously moving belt system. The conditioned sludge is gently fed through specially designed feed trays that ensure uniform distribution across the belt surface for optimized drainage performance.
The system consists of precision-engineered rollers, including tensioning, drive, and tracking rollers, supported by heavy-duty bearing housings for stable and reliable operation. The belt movement is powered through an electric motor, speed variator, and reduction gearbox arrangement, ensuring smooth and controlled operation.
An advanced pneumatic belt tracking system continuously monitors and maintains belt alignment during operation. The automatic tracking mechanism, equipped with pneumatic bellows and tracking valves, ensures stable belt positioning and uninterrupted dewatering performance.
Partially dewatered sludge is efficiently removed through an adjustable scraper system and discharged through a solids chute. The belt cleaning system utilizes high-pressure spray nozzles to thoroughly wash residual solids from the belt surface. Collected wash water can be filtered and reused for shower applications, supporting efficient water utilization.
To enhance filtrate drainage efficiency, the GDT is equipped with hydrofoils and specially designed plough arrangements that disturb the formed sludge cake, reducing surface tension and improving water release from the sludge. This design significantly improves gravity dewatering performance and sludge conditioning efficiency.
Sludge Feed System
Uniform sludge feed distribution system designed to optimize surface coverage and processing consistency.
Gravity Dewatering
Continuous gravity dewatering operation that maximizes liquid separation before mechanical pressure stages.
Belt Tracking
Automatic pneumatic belt tracking mechanism ensures absolute precision, alignment, and prolonged component lifecycle.
Drive & Tensioning
Heavy-duty drive and tensioning system built to withstand high structural loads and continuous industrial operation.
Scraper Arrangement
Adjustable sludge scraper arrangement for flexible and efficient cake removal across varied output densities.
Belt Washing System
High-pressure belt washing system engineered to maintain fabric permeability and prevent blinding during operation.
Drainage Enhancement
Hydrofoil-assisted drainage enhancement that utilizes localized pressure drops to step up hydraulic processing capacity.
Advanced Plough System
Advanced plough system designed for turning the sludge matrix to allow improved filtrate flow and enhanced drainage.
Water Recycling
Recyclable shower water arrangement that drastically lowers freshwater footprints and boosts resource sustainability.