The "all-hydraulic" design of the SlurryCup™ has no internal moving parts, which increases reliability. Two levels of "washing" produces clean grit ready for dewatering.

The SlurryCup™ is extremely effective at washing grit captured at the preliminary treatment stage by the grit channel, aerated grit chamber, vortex grit collector, or grit separator. The SlurryCup™ minimizes organic content which reduces objectionable odours and reduces the volume hauled to landfill. The SlurryCup™ meets the challenges of separating and classifying grit as small as 75 micron (200 mesh).

Sludge Degritting Solution

Primary sludge degritting minimizes deposits in anaerobic digesters and reduces abrasive wear on pumps, centrifuges, and other downstream equipment. This can be the most economical location in a wastewater treatment plant to remove grit. The SlurryCup™ uses two levels of separation and classification to capture and wash very fine grit, as small as 75 micron sand, from primary sludge up to 1.5% total solids.

Applications

• Sludge degritting
• Grit washing 

Advantages

• Increasing performance as flows increase
• All hydraulic, non-mechanical design with no internal moving parts
• Compact design
• Simple to operate
• Cost effective and easy to install 

The SlurryCup™ uses a combination of an open free vortex and the accelerated gravity boundary layer effect to capture, classify, and remove fine grit, sugar sand, and high density fixed solids from grit slurries, and both primary and secondary sludge.

The grit underflow from the SlurryCup™ passes through a hydraulic valve which provides secondary grit washing. The cleaned grit slurry, when dewatered by a Grit Snail^®, contains 60% total solids with less than 15% organic (VS) solids in headworks applications. Reduced organic solids content minimizes the volume and weight hauled to solid waste disposal sites. It also reduces odours and associated complaints.

SlurryCup™ Process

Q. What is the SlurryCup™?

The SlurryCup™ is a high performance grit washing device. The SlurryCup™ unit’s highly efficient process captures, classifies, and removes fine grit, sugar sand, and high density fixed solids from grit slurries and both primary and secondary sludge. 

Q. What are the advantages of the SlurryCup™ system?

The SlurryCup™ uses only hydraulic forces in order to separate grit from organic materials. This provides the advantage of no moving parts and no power requirements for operation. Tangential entry a boundary layer effect, which effectively holds fine grit particles in place while higher velocity flows wash away the organic materials. This boundary layer cleaning is able to retain the very fine grit particles which other types of systems are unable to capture. Missing fine grit particles causes significant deposition problems in downstream processes in plants around the world.  

Q. Over the years, our plant has accumulated significant amounts of grit in digesters and basins due to an ineffective grit removal system? Can the SlurryCup™ remove this?

Yes, the SlurryCup™ can be used to remove grit from sludges (up to 1.5% TSS) in a number of processes throughout the plant.

Q. Our plant experiences significant surges in flow during wet weather events, will this effect SlurryCup™ performance?

Yes, performance increases in theSlurryCup™ as the flow increases. Increased flows increase the amount of grit entering a plant, making performance at peak flows critical in eliminating grit problems.