Grit ManagementTank Connection

  • Grit Removal
  • Grit Washing
  • Grit Dewatering
  • Grit Management

Grit Removal: Headcell - 95% Grit Capture Guarantee*

Grit Removal: Eutek HeadcellA unique stacked tray design provides the surface area required for outstanding performance with a small footprint. The HeadCell® is the ultimate grit removal solution for new plants as well as a cost effective retrofit option for grit removal upgrades.

The HeadCell® is an evolution in grit removal, representing the next generation in grit separation. The HeadCell® is the result of decades of research to identify and eliminate the inefficiencies of conventional forced vortex grit removal systems. The HeadCell® is a modular, multiple-tray settleable solids concentrator that removes grit as small as 75 microns with minimal headloss.

The HeadCell® provides high performance fine grit removal in a small footprint. This allows capacity increases using existing space. Conventional grit removal systems cannot match the performance of the HeadCell®. For new headworks grit control systems, the HeadCell® can be installed in a poured-in-place concrete basin above or at grade, with a footprint much smaller than conventional grit removal systems.

Grit Removal: Eutek HeadcellApplications:

  • New wastewater treatment plants
  • Treatment plant retrofits
  • Grit removal for potable water


  • Protects equipment and processes from abrasive wear and sedimentation
  • Effective use of valuable space
  • Long component life with minimal wear
  • Eliminates short circuiting, increases capture
  • Minimal grease build-up
  • Meets stringent environmental requirements with less odors
  • Large surface area with short settling distances
  • Compact, yet expandable design
  • All-hydraulic design with no moving parts
  • Structured flow configuration
  • Continuous boundary layer flow over hydrophobic surfaces
  • Clean, dry grit when washed by a Eutek SlurryCup™ or Eutek TeaCup® and dewatered by a Eutek Grit Snail®

Grit Removal: Eutek HeadcellOperation:

The HeadCell® captures fine particles due to the large surface area and short settling distances. Evenly split flow eliminates thermal short circuiting which reduces the performance of conventional grit basins. The HeadCell® is essentially the ideal grit basin. The HeadCell® is a hydraulically driven forced vortex system which requires no moving parts to operate.

The high efficiency flow distribution header evenly distributes influent over multiple conical trays. Tangential feed establishes a vortex flow pattern where solids settle into a boundary layer on each tray, and are swept down to the center underflow collection chamber. These settled solids are continuously pumped to a SlurryCup™ (or TeaCup®) and Grit Snail® resulting in the market leading performance grit separation, classification, and dewatering system


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Hydro International: HeadCell™ Hydro International: HeadCell™ (1154 KB)

Grit Washing: SlurryCup - 80% Organics Removal Guarantee

Grit Washing: Eutek SlurrycupThe "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 odors 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.

Grit Washing: Eutek SlurrycupApplications

  • Sludge degritting
  • Grit washing 


  • 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 

Grit Washing: Eutek SlurrycupOperation:

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 odors and associated complaints

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Hydro International: SlurryCup™ Hydro International: SlurryCup™ (1742 KB)



Grit Washing: TeaCup

Grit Washing: Eutek TeacupThe TeaCup® is a high performance accelerated gravity grit removal system for smaller plants. An assortment of TeaCup® sizes or multiple TeaCup® units can be used to accommodate many flow ranges.


  • Municipal wastewater headworks grit removal
  • Surface water pretreatment
  • Industrial water reuse
  • Snail shell removal 


  • Increases downstream solids handling capacity
  • Removes over 95% of wastewater abrasives to eliminate downstream deposition and excessive mechanical wear
  • Reduces equipment wear & maintenance
  • Reduces solids handling costs as much as 50%
  • System easily pays for itself within 2 1/2 years
  • Increasing performance as flows increase
  • All hydraulic, non-mechanical design with no internal moving parts
  • Prefabricated modular components
  • Simple, low maintenance operation
  • Compact design requires up to 80% less area than other grit systems
  • Economical and simple to install

Grit Washing: Eutek TeacupOperation:

The unique TeaCup® design uses a combination of a free vortex and the accelerated gravity boundary layer effect to capture, classify, and remove grit, sugar sand, and high density fixed solids. The TeaCup® discharges a clean (low organic) grit slurry, which emits fewer odors and requires only dewatering to meet stringent disposal regulations.

The "all-hydraulic" design of the TeaCup® provides increased grit removal performance as increasing flows transport large grit loads into the plant. In contrast, traditional gravity and forced vortex grit control systems have decreasing removal performance with increased flows.

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Hydro International: TeaCup™ Hydro International: TeaCup™ (1411 KB)

Grit Dewatering: Grit Snail - 60% Dewatering Guarantee

Grit Dewatering: Eutek Grit SnailSlow moving belt retains fine grit for dewatering. A durable design offers a long product life with low maintenance.

Municipal wastewater plants with combined sewers or industrial loads will require greater dewatering capacity. Different sizes of Grit Snail® units, or multiple Grit Snail® units can be configured to match any grit load.

The Grit Snail® design includes an abrasion-resistant belt housing and components with no metal-to-metal contact. The variable frequency drive adjusts belt speed to match changing grit loads. The torque-limiting clutch protects the drive system and belt from mechanical overload.


  • Non-turbulent dewatering for clean grit output from a SlurryCup™ or TeaCup® System 


Grit Dewatering: Eutek Grit Snail
  • Slow-moving belt minimzes turbulence to help retain fine grit 
  • Durable design provides a long product life
  • Output grit from a Hydro washing system contains low organic material, reducing odor concerns
  • Dewatered grit contains low water content, reducing landfill costs


Grit and fine abrasives are discharged by a grit washing unit into the Grit Snail® clarifier, where they settle onto the slow-moving stepped cleats. The captured solids are gently lifted out of the clarifier at 1-5 feet per minute. Degritted water flows out of the clarifier via an overflow weir. Dewatering begins as the grit and fine abrasives are quiescently raised from the clarifier pool to retain fine grit. The dewatered abrasives are carried to the top of the Grit Snail®, where they are discharged into a disposal container for landfilling.

A slow moving cleated belt gently escalates the grit from the clarifier, retaining fine grit, unlike turbulent dewatering systems which reintroduce captured grit back into the plant. The Grit Snail® is designed for durability and ease of maintenance, resulting in a very long product life and trouble-free operation.


  • 304 stainless steel construction
  • NEMA 4X valves & stainless steel control panel
  • Variable frequency drive
  • Belt rinse system 

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Hydro International: Grit Snail™ Hydro International: Grit Snail™ (1382 KB)



Grit Dewatering: Decanter

Grit Dewatering: Eutek Decanter

When a Decanter is used in conjunction with a TeaCup® solids classifier, the grit underflow and washed abrasives require no further washing before dewatering. This underflow can be pumped or flow by gravity to the Decanter for clarification and dewatering. Degritted overflow from the Decanter can be returned to the plant headworks.

The Decanter comes in three basic configurations to match local disposal trucks or equipment configurations: front-loading, rear-loading, and self-dumping. Standard features include a galvanized steel construction with female pipe thread connections. Optional features include quick disconnect fittings and hinged plastic covers.


  • Grit dewatering
  • Dewaters grit output from a SlurryCup™, TeaCup™, or Grit King® unit
  • Suited for smaller plants
  • Industrial dewatering

Advantages:Grit Dewatering: Eutek Decanter

  • Retains 75 micron grit and larger when used with a TeaCup® or SlurryCup™ grit washing unit
  • 1 and 1.5 cubic yard capacities
  • Standard hot-dipped, galvanized finish (or stainless steel)
  • Meets ANSI Standards for safety and compatibility
  • Reduces abrasive wear & fouling of solids-handling equipment
  • Easy disposal of dewatered solids
  • Cost effective alternative to conventional dewatering systems
  • Long product life
  • Matches standard solids refuse trucks
  • Available in front-loading, rear-loading, or self-dumping options


The Decanter quiescently settles high-density solids to retain grit and abrasives. A wedgewire dewatering screen allows free water to drain out without releasing captured grit. The Decanter is portable, mounted on four polyurethane casters suitable for movement on a smooth, hard floor.

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Hydro International: Grit Decanter Hydro International: Grit Decanter (1401 KB)

Grit Management: Grit King

Grit Management: Grit KingThe Grit King is an advanced hydrodynamic separator that augments gravitational forces to separate grit from water. The Grit King is an economical choice for new or existing municipal or industrial wastewater applications.

Valving, grit classifiers, grit pumps, dewatering decanters, and control systems are available to provide a comprehensive grit removal package.


  • New wastewater treatment plants
  • Treatment plant retrofits
  • Grit removal for potable water
  • Grit removal for industrial effluents


  • No moving parts
  • No external power source
  • Recovers clean grit
  • Easily linked with new or existing plants
  • Economical to own and operate
  • Compact design
  • Minimal headloss

Grit Management: Grit KingOperation:

Flow is introduced into the Grit King® via a tangentially positioned inlet causing a rotational flow path around the dip plate. The flow spirals down the wall of the chamber as solids settle out by gravitational and rotational forces. (red arrow)

The grit collects in the grit pot as the center cone directs flow away from the base, up and around the center shaft into the inside of the dip plate. (blue arrow) The upward flow rotates at a slower velocity than the outer downward flow. The resulting "shear" zone scrubs out the finer particles.

The concentrated grit underflow is pumped or gravity fed to a grit classifier for dewatering from the bottom of the Grit King®

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Hydro International: Grit King Hydro International: Grit King (1058 KB)