Fiberglass Density Current Baffles (Stamford Baffles)
ENDURO® DENSITY CURRENT BAFFLES – STAMFORD BAFFLES
Density current baffles—sometimes called Stamford, upflow or submerged flow deflection baffles—are an integral part of activated sludge clarifiers. Enduro's custom-designed fiberglass Density Current Baffles (DCBs) meet or exceed industry standards for these units and provide important value to water and wastewater operations by improving solids capture, reducing turbidity and increasing hydraulic capacity.
Benefits of FRP Density Current Baffles:
- Long, Reliable Service Life – FRP delivers superior corrosion resistance and strength, and precision molding results in consistent, reliable quality
- Customization – components are custom-molded to fit the contour of each clarifier
- Easy, Low-Cost Installation – Enduro Stamford baffles have a simple, modular construction, and the FRP components are lightweight with a high strength-to-weight ratio. In most applications, only one stainless steel or FRP support bracket is needed per panel, which can be easily attached in the field by a contractor. These qualities make the system easy to handle without special lifting equipment and enable a fast installation
- Increased Hydraulic Capacity – whereas dense currents can "short-circuit" the clarification process with standard baffles, Enduro density current baffles redirect density current flows back to the center of the tank, allowing flows to decelerate away from the effluent stream and redeposit suspended solids back onto the sludge blanket where they belong, reducing total suspended solids (TSS) by nearly 40%
Tips for Increasing Hydraulic Capacity with FRP DCBs:
- Mount the baffle below effluent launder, weir and scum baffle
- For outboard launders, locate the bottom of baffle halfway between the top of sludge blanket and bottom of weir
- For inboard launders, if the vertical clearance between baffle bottom and top of sludge blanket is two feet or more, mount baffle on tank wall below launder without obstructing vents. If vertical clearance is less than two feet, mount baffle to lower inboard corner of launder trough. For this condition, calculating horizontal projection and baffle size should also include the launder width. The minimum size should be 24” diagonally
- Slope baffle inward and downward beyond the scum baffle to redirect random density currents (flows) toward the center of the tank
- Mount baffle continuously around the tank to maximize solids capture
