AccuPac® Cross Flow Media is specifically designed for biological fixed film systems. Cross flow media provides a cost-effective method for reduction of organics (roughing and polishing), nitrification, denitrification, and anaerobic treatment of municipal and industrial wastewaters. The modules are fabricated from rigid PVC sheets, which are UV-protected and resistant to rot, fungi, bacteria, acids, and alkalis commonly present in municipal wastewater.
Combining
high surface area with maximum mixing/redistribution points per unit volume
of media, cross flow media facilitates superior process performance in a
wide range of hydraulic wetting rates.
Each sheet in a module is completely corrugated at a 60° angle from the horizontal and assembled in a cross-corrugated pattern with adjacent sheets, creating a minimum 95% void-to-volume ratio.
This configuration provides continuous and uniform horizontal distribution of both air and water throughout the full media depth, enhancing contact between the wastewater and the media biofilm.
AccuPac Cross Flow Media modules are excellent for both circular and rectangular systems with either rotary distributors or fixed nozzles:
• Trickling filters, bio-towers, nitrification towers; For new installations or replacement of existing media.
• Ideal replacement for rock, wood, or random media; Increases retention time and wastewater biomass contact; Improves wastewater distribution and ventilation.
• Excellent for submerged fixed-film systems in either aerobic or anaerobic modes; High mixing/redistribution and open void area promotes air and liquid mixing without impeding flow.
Brentwood’s
patented manufacturing process produces dedicated recesses on the corrugated
sheets which become bonding pads when solvent-welding the sheets to form
a module. This feature ensures:
• Precise and complete bonds between sheets at each of the multiple joints, from the edges throughout the entire self-supporting module.
• Pre-engineered number of mixing/redistribution points as the bonded joints become the mixing points for each pair of sheets.
• Uniform size openings and uniform module dimensions creating superior creep resistance and structural integrity.
Module
Placement & SupportTo maximize mixing/distribution and to increase strength and stability in the system, each module in the bottom layer is placed cantilevered across, and at right angles to, two supports with 8 inch minimum support width on 24 inch centers (Brentwood’s pre-engineered AccuPier Support System is an effective solution). All modules in additional layers are placed at 90° to the layer immediately below.
Cross
Flow Media Selection GuideAccuPac Cross Flow Media modules are available in a wide variety of sizes: 12 or 24 in. heights; 12 or 24 in. widths; and 4, 6, 8, and 10 ft. lengths. For more information or to place an order, contact Brentwood.
| ACCUPAC PRODUCT |
SURFACE AREA ft2/ft3 (m2/m3) |
MIXING POINTS #/ft3 (#/m3) |
TYPICAL APPLICATIONS |
| CFS-3000 | 31 (102) | 180 (6,356) | Wastewater treatment, including BOD roughing and polishing |
| CF-1900 | 48 (157) | 720 (25,424) | Wastewater treatment, especially shallow-depth BOD roughing and polishing, nitrification and denitrification |
| CF-1200 | 69 (226) | 2,457 (86,758) | Odor control, oil/water separation, and specialized nitrification |
| CF-650 | 119 (390) | 6,864 (242,300) | Odor control, aquaculture, and other unique applications |
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