Is dairy whey a waste or a by-product?

Increasingly a by-product. Under EU Regulation 767/2009, liquid whey and permeate qualify as feed materials, and membrane processing recovers whey protein (WPC/WPI) and lactose for food use — avoiding waste classification entirely.

How is dairy effluent valorized?

Dairy wastewater is high in COD/BOD and fat. DAF sludge and whey are premium anaerobic digestion co-substrates with biogas yields of 300–600 m³/t volatile solids, and producers often receive a tipping credit.

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Turn Dairy Side-Streams Into Feed, Ingredients & Biogas

Name: SymbioFlows Platform
Availability: InStock
Author: SymbioFlows

Whey, permeate, and high-COD effluent are valuable feedstocks for protein recovery, animal feed, and anaerobic digestion. SymbioFlows connects dairy processors with verified off-takers.

Get Your Valorization Report

~9 L

Whey per kg cheese produced

src: EDA

300–600 m³/t VS

Dairy effluent biogas yield

src: industry avg

~70% of solids

Whey lactose content

src: process data

Premium food-grade

WPC/WPI ingredient value

src: market avg

Key Waste Streams — EWC Codes & Buyers

EWC Code	Material	Description	Who Buys It
02 05 01	Materials Unsuitable for Consumption	Liquid whey, permeate, and off-spec dairy product.	Ingredient processors, animal feed, AD plants
02 05 02	On-site Effluent Treatment Sludge	DAF and biological sludge from dairy wastewater.	Anaerobic digesters, agricultural spreading
02 05 99	Wastes Not Otherwise Specified	CIP wash water, brine, and process residues.	Effluent treatment, AD co-substrate