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The Hycor® ThickTech™ Rotary Drum Thickener (RDT) is the industry leading sludge thickener. Its performance is unmatched, with sludge volume reduction of 90% and a 98% capture rate. In addition, this superior performance is achieved with very low amounts of polymer. The RDT system is quite compact and requires less floor space than other thickeners. It has low requirements for horsepower, water consumption and polymer usage, resulting in valuable operational efficiencies.

The RDT increases digester capacity, reduces hauling costs and can be used as a pre-thickener to increase capacity of other dewatering equipment.

With hundreds of installations and over 25 years of operation, the ThickTech™ system is performance proven for applications in municipal water and wastewater treatment plants, industrial facilities, and pulp and paper mills. It is fabricated of stainless steel, and engineered to provide years of reliable service. The system utilizes a low shear floc tank, followed by dewatering with a high-performance rotary drum screen.

Drum screen internals of the ThickTech Rotary Drum Thickener View inside a ThickTech Rotary Drum Thickener in use while thicken solids ThickTech Rotary Drum Thickener floc

How ThickTech Works

The sludge thickening system is designed to achieve flocculation with a minimal amount of expensive chemicals. The floc tank has tangential inlet and outlet openings to maximize flocculation by reducing shear from turbulence. This design creates a gentle swirl that combines the sludge with the polymer. This swirling motion also increases the overall sludge detention time for floc development. A specially designed impeller maintains the swirl without breaking down the flocs.

Dewatering takes place along a multi-zone drum cylinder. The zones can have different size mesh media to augment capture efficiency as the sludge moves along the length of the cylinder. Finer mesh is generally used in the feed end where material is thinner, while downstream zones have larger openings to enhance water removal. Rings with adjustable ports control detention time in each zone. The result is capture efficiencies as high as 98% without sacrificing high inlet flow rates. High capture efficiency alone can substantially reduce polymer usage.

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Features & Benefits

Water drop with leaves

Stainless steel construction
increases life span 

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Largest USA installation list
with over 300 since early 1990's; Proven design

Improved function

98% capture rate
creates the lowest polymer consumption, making ThickTech the best performing RDT 

Low Power

Lowest utilities use in water and power
reduces energy consumption and saves cost

Improved function

Multi-stage cylinder with roll bars, split augers and detention ports 
manages movement of sludge to effectively drain water and discharge

Reduced Maintenance

Quick change screen mesh sized for each stage
in multi-stage cylinder provides flexible performance in light of changing sludge

Improved function

Upstream polymer injection and mixing
with integral floc tank makes ThickTech designed to build popcorn floc

Provide various options

VFD control of cylinder and floc tank RPM
gives operators flexibility in operation

Improved function

Booster pump keeps 100psi at the spray header
to ensure screen cylinder remains clean of sticky polymer and sludge and creates consistent, long-term performance 

Reduced Maintenance

Spray header with internal brush
cleans nozzles from the inside for long term, consistent performance

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High capacity units
with models designed for individual flows of 50-400 gpm provides flexibility 


Two side-by-side ThickTech Rotary Drum Thickener Units
Overview of two ThickTech Rotary Drum Thickeners
Multiple ThickTech Rotary Drum Thickener units used for sludge thickening
Preview image for the video "Rotary Drum Thickener Virtual Tour (ThickTech)".
Drum screen internals of the ThickTech Rotary Drum Thickener
View inside a ThickTech Rotary Drum Thickener in use while thicken solids
Hycor ThickTech Rotary Drum Thickener
ThickTech™ rotary drum sludge thickener multiple drum installation
Preview image for the video "Parkson ThickTech™ Rotary Drum Thickener Product Video".
Hycor ThickTech Rotary Drum Thickener
Preview image for the video "ThickTech™ In Action".
Side view of a Hycor ThickTech Rotary Drum Thickener
Preview image for the video "Parkson's ThickTech Rotary Drum Thickener in Virtual Reality".

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