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CT2 submerged sludge collector

Overview Specifications Solutions Documentation & Tools
Overview

Overview

Product Features
  • High solids concentration
  • Targets the areas of highest sludge accumulation
  • Trouble-free maintenance
  • Reduced operational cost
  • Operates via differential head, with no pumps to maintain
  • Energy efficient
  • Adaptable to a wide range of tank configurations

Fit and forget

By simplifying the water treatment process, Xylem’s Leopold CT2 sludge collection system increases plant efficiency, and reduces both maintenance time and total system operational costs. 

Xylem's Leopold CT2 submerged sludge collector systems have quietly done their job, delivering reliable operation, low maintenance costs, and good sludge production in hundreds of facilities worldwide. 

The CT2 sludge collection system operates on gravity, both a simple principle and powerful force. Xylem designed a superbly simple but highly efficient process to remove sludge by taking advantage of a differential head. Water pressure in the main tank forces the sludge through the collection header into the outlet piping, and away to the sludge removal trough. Careful selection of smooth-bore piping for the suction header keeps headloss to a minimum for the most efficient sludge removal and low driving head requirements. A simple cable drive moves the suction header across the tank floor at a steady, controlled rate, removing sludge without disturbance. Pumping costs are eliminated and cable drives require far less power.

The Leopold CT2 submerged sludge collection system has a “fit and forget” quality that not only simplifies the water treatment process, but also reduces system operation costs. The header, locked onto the guide rail and controlled by a programmable operating system, targets the areas of highest sludge accumulation. The cable drive pulls the header through the sludge with a positive motion and minimal sludge disturbance, removing the sludge without dilution. This reduces sludge volumes and thickening costs, too. And compared to other submerged sludge collectors, the Leopold CT2 submerged sludge collection system is far simpler to maintain because it has a minimal number of moving parts.

Adaptable to plant requirements

The Leopold CT2 sludge collection system can be easily installed or retrofitted into a plate settler or tube settler sedimentation tank. Good quality sludge can then be removed as raw water conditions demand.

The CT2 sludge collection system is the optimum choice for flat-bottom tanks or tanks with sloped floors. As the suction header glides through the sludge, it removes the settled sludge with minimal dilution and without gross disturbance.

Leopold controls for the CT2 sludge collection system can give each plant the flexibility to meet its individual needs. For example, in sedimentation basins sludge settles unevenly, with more accumulating in the inlet area than in other areas of the basin. Advanced Leopold controls can be programmed to increase sludge removal at the inlet of the tank to even out the sludge load, providing consistent sludge for thickening and disposal.

The CT2 sludge collection system can also be designed to compensate for high-solids-production water with a double header driven by a single cable system. The travel length of the header is designed to draw the desired amount of sludge from the basin where sludge production is greatest. Double headers also accommodate extra-long basin design.

The Leopold CT2 sludge collection system can be designed to accommodate extra-wide sedimentation tanks as well. And each track can be separately controlled to vary the number of passes and the speed of each pass.

Specifications

Specifications

General Information
CT2 submerged sludge collector
Contaminates removed
Suspended Solids, Algae, BOD/Organics, Ortho-phosphorus
Single source responsibility
Yes, to supply all system components
Standards met
AWWA, ASTM, ASME
Construction type
New or existing
Sludge removal applications
Potable Water Clarification (Traditional Sedimentation / Plate / Tubes), Filter Backwash Water
Removal principal
Differential Head
Smart control
Multi-Pass Control Option to target sludge profile
Basin size
Can accommodate extra-wide sedimentation tanks by being placed in parallel, up to 120' long
Removal speed
Up to 12 fpm (4 M/min)
Misapplications
Heavy Silts and Sands
System Components
CT2 submerged sludge collector
Suction header
304 or 316 stainless steel locked to guide track via rollers to prevent derailment
Drive system
Low horsepower, high efficiency variable speed drive assembly with fiberglass cover
Guide rail
304 or 316 stainless steel construction
Suction hose
Neutrally Buoyant, Long-Life Polymer Construction
Header swivel
PVC Swivel Assembly to Extend Hose Life
Control system
Manual, Semi-Automatic, Automatic
System control
Manual, PLC, SCADA Integrated
Valves
Butterfly
Valve actuator
Electric, Pneumatic
Solutions

Solutions

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Documentation & Tools