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Cochrane Activated Carbon Filtration

Cochrane provides industrial quality filtration systems, primarily using carbon in various forms but may also include other media as required.

Low Pressure Drop Efficient Carbon Vessels

Feed water enters the vessel through an inlet valve and is sprayed out over the activated carbon bed. The water then flows down through the carbon. The highly porous granulated carbon fines absorb and adsorb chlorine, organics and impurities. The water enters the distributor system at the bottom of the vessel and travels upward via the center riser tube where it is then piped out of the vessel.

Over time, the carbon will trap solids resulting in an increased pressure drop across the vessel which may will trigger the need for a backwash. During backwash the flow is reversed and the feed water enters down through the riser tube, exits out the distributor system and flows upward through the bed of carbon. This increased velocity up through the bed disturbs the carbon and releases the trapped particles which are sent to a drain.


• To remove chlorine, trace organics, color and odor
• Chlorine can affect taste & odor of water
• Chlorine can degrade certain materials such as plastics and composites
• Chlorine causes unrepairable damage to most RO membranes
• Trace organics can affect taste & odor of water, be toxic and cause organic fouling of resins and membranes

Key benefits

• Provides effective, continuous chlorine removal
• Can be used for organics removal in certain applications
• Contains highly porous granulated activated carbon
• Inlet/outlet pressure gauges
• Efficient internal designs
• Self adjusting backwash flow control
• Safety air release valve for pressure fluctuations
• Minimum energy and maintenance requirements
• Stand alone tanks or modular skid mounted (pre-piped & pre-wired) options
• Clear backwash drain line for visual inspection (PVC plumbing only)
• Steam sanitizable tank options (stainless steel vessel only)


Vessels: Carbon steel, stainless steel or FRP (fiber reinforced plastic), ASME coded/stamped options
Design Pressure: As required
Internals: Stainless steel or schedule 80 PVC
Media: Granulated activated carbon (GAC)
Face Plumbing: Carbon steel, stainless steel or schedule 80 PVC
Valve Operation: Pneumatic, water, electric or manual actuated
Skid Mounted Option: Carbon steel or stainless steel
Controls: PLC, stager/timer, metered or manual

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