Treating wastewater with high levels of FOG in the dairy industry

Efficient Wastewater Treatment with Krofta DAF in the Dairy Industry

Krofta Dissolved Air Flotation (DAF) units are at the forefront of wastewater treatment solutions for the dairy industry, offering unmatched performance in reducing environmental impact and meeting compliance standards.

From milk processing plants to ice cream factories, Krofta DAF systems play a vital role in treating complex wastewater streams containing high levels of fats, oils, grease (FOG), Total Suspended Solids (TSS), Biological Oxygen Demand (BOD), and Chemical Oxygen Demand (COD).

The diverse applications of Krofta DAF technology in the dairy industry range from pretreatment to nutrient reduction, ensuring cost-effective, efficient, and sustainable operations for facilities worldwide.

Pretreatment Solutions for Dairy Wastewate

Reducing FOG, TSS, BOD, and COD
Krofta DAF units are highly effective as a pre-treatment step in dairy wastewater treatment. They significantly reduce:

FOG (fats, oils, and grease)
TSS (Total Suspended Solids)
BOD/COD (Biological and Chemical Oxygen Demand)

This makes Krofta DAFs ideal for:

Milk processing plants
Butter production facilities
Ice cream manufacturing units
Plants producing new products like flavored creamers and cultured dairy items

By addressing these contaminants early, Krofta DAF systems help facilities meet discharge standards or optimize further treatment processes.

Pretreatment for High-Rate Aerobic Systems

High-rate aerobic systems benefit greatly from the inclusion of Krofta DAF units:

Pre-Biological Treatment: Krofta DAF systems remove high levels of FOG, TSS, and BOD before entering biological reactors, reducing startup challenges and operational issues.
Post-Biological Treatment: DAF units act as effective clarifiers and thickeners, handling bio-solids more efficiently than traditional gravity clarifiers.

With Krofta DAF, aerobic systems achieve:

Twice the solids concentration compared to gravity clarifiers
Reliable performance during startup and process fluctuations
Reduced maintenance requirements due to minimized bio-mass coating

Pretreatment for High-Rate Anaerobic Processes

Krofta DAF units are equally effective as pretreatment solutions for high-rate anaerobic processes like UASB and UAC reactors:

Oil and Solids Reduction: Prevents oils from coating anaerobic granules, which can alter density and cause biomass to float, leading to potential reactor inefficiencies.
Granule Protection: Minimizes the risk of granule loss in the effluent, ensuring stable reactor performance and reducing the need for costly replenishments.

For low-rate anaerobic systems like CSTRs, Krofta DAF technology:

Achieves solids separation in 3–5 minutes
Maintains higher temperatures in return activated sludge (RAS), reducing heating needs and preserving biogas for power generation or other high-value uses

Phosphorus and Nutrient Reduction

With increasing regulatory focus on nutrient management, Krofta DAF systems offer reliable solutions for phosphorus reduction:

Metal Salts and Flocculants: Used in combination with Krofta DAF technology, these agents effectively reduce total phosphorus (P) in dairy wastewater.
Customizable Solutions: The optimal choice of treatment chemicals can be determined through jar testing to match the specific wastewater characteristics of each facility.

This adaptability ensures compliance with environmental standards while supporting sustainable practices.

Compact Design and Energy Efficiency

Krofta DAF systems are designed with a compact footprint, making them suitable for facilities with space constraints. Additionally, their rapid processing times and minimal temperature loss in colder climates contribute to:

Lower energy consumption
Reduced operational costs
Enhanced biogas recovery for value-added applications

Why Choose Krofta DAF for Dairy Wastewater Treatment?

For over four decades, Krofta has been a trusted leader in wastewater treatment, providing innovative Dissolved Air Flotation solutions tailored to the unique challenges of the dairy industry. Whether it’s pretreatment, nutrient reduction, or sustainable water reuse, Krofta DAF units deliver:

Industry-leading performance
Cost-effective solutions
Reliable compliance with stringent discharge regulations

Invest in Krofta DAF technology today to enhance your dairy operations' efficiency and sustainability.

Contact Us for a Tailored Solution

Ready to optimize your dairy wastewater treatment with Krofta DAF? Fill out the form below, and our experts will guide you in selecting the best solution for your facility's needs.

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Dairy Industry