FEDI (Flow Equalization & Distribution Inlet)

Used in municipal wastewater treatment plants, industrial effluent treatment systems, and combined sewer systems where flow rates and pollutant concentrations vary significantly over time.

Unique Features

Equalizes flow variations to ensure consistent hydraulic loading

Dampens peak flows, protecting downstream treatment units

Reduces the risk of washout during storm events

Improves overall treatment efficiency by maintaining steady-state conditions

Minimizes chemical dosing fluctuations

Can be integrated into new or retrofit treatment plants

Frequently asked questions

Flow equalization buffers peak flows and load surges, preventing hydraulic and organic overloading of treatment units. It leads to better effluent quality, reduced chemical consumption, and extended equipment life.

The equalization tank volume is determined from cumulative flow analysis — plotting incoming flow vs. average flow over a 24-hour period. The maximum deviation from the average flow determines the required storage volume.

Yes, mixing (mechanical or diffused aeration) is recommended to prevent solids from settling, maintain aerobic conditions, and ensure a homogeneous blend before sending flow to downstream processes.

Yes. FEDI equalizes both hydraulic flow and organic load (BOD, TSS, pH). This dual equalization ensures downstream biological treatment units receive consistent, treatable influent regardless of upstream variability.

FEDI (Flow Equalization & Distribution Inlet)