🫧 Backwash Fluidics (Backwash 10-15 GPM/Sq Ft, 30%-40% Bed Expansion, Carbon Scour)

GAC Backwash Hydraulics & Fluidization Calculator

Model hydraulic backwash upflow fluidization dynamics for virgin and spent granular activated carbon beds ($12 imes40 ext{ or }8 imes30 ext{ mesh}$): calculate minimum fluidization velocity, achieve 30% to 40% bed expansion to release filtered solids, re-stratify the carbon bed by density without washing carbon out to waste, and vessel maintenance yields.

1. Project & Operating Inputs

GAC Vessel Cross-Sectional Area (Sq Ft e.g. 113 Sq Ft 12-ft Diameter Tank)

Target Bed Expansion (% e.g. 35.0% Fluidized Bed Expansion)

Customer Bid Price for Supplied GAC Backwash Pumping Skid ($)

High-Flow Backwash Pumps, 316SS Internal Backwash Troughs, VFD ($)

2. Financial Breakdown & Yield

GAC BED FLUIDIZATION

Turnkey GAC Backwash Skid & Valving Profit

Water Utility Backwash Mechanical Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Direct Cost