🫧 BAC Backwash Hydraulics (Non-Chlorinated Wash Water, Air Scour 3 SCFM/Sq Ft, Headloss <6.0 ft)

Biological Active Carbon Filter Backwash Calculator

Size non-chlorinated air-water combined backwash sequences for biological filters: use dechlorinated finished water preserving beneficial fixed-film nitrifying biomass, calculate air scour rate ($3.0 ext{ to }5.0 ext{ SCFM/Sq Ft}$) and water fluidization rate ($15 ext{ to }20 ext{ GPM/Sq Ft}$), prevent carbon attrition, and utility profits.

1. Project & Operating Inputs

Filter Surface Area (Sq Feet e.g. 450 Sq Ft BAC Filter Cell)

Backwash Run Interval (Hours e.g. 72.0 Hours Between Backwashes)

Customer Bid Price for Supplied Dechlorinated Backwash Skid ($)

Variable-Speed Backwash Pump, Rotary Lobe Air Scour Blower, Controls ($)

2. Financial Breakdown & Yield

NON-CHLORINATED BACKWASH

Turnkey Biofilter Backwash Pumping Skid Profit

Water Utility Backwash Mechanical Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Direct Cost