Anti-Foam Concentrate: Effective Foam Control for WWTPs

Foaming in wastewater treatment plants can be caused by surfactants, organic overload, nutrient imbalances, bulking sludge, and poor aeration.

Excessive foaming can disrupt the activated sludge process, leading to inefficiencies in the treatment system and potential overflows.

Anti-Foam Concentrate is a water-based chemical additive specifically formulated to prevent foam formation in aeration tanks, secondary clarifiers, and anaerobic digesters by reducing the surface tension of wastewater.

This concentrated, non-polluting formula is effective across a wide range of pH levels and works to minimize foam caused by detergents, surfactants, and organic materials, ensuring smooth and efficient wastewater treatment system operation.

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Anti-Foam Concentrate Features


  • Industrial-strength performance

  • Concentrated, non-polluting, water-based formula

  • Effective in any situation where detergents cause foaming

  • Formulated with special silicone anti-foaming agents

  • Free from petroleum solvents and alcohols

  • Ready to use — no dilution required

  • Available in convenient sizes:

    Case of four 1-gallon jugs (Product #73241)

    5-gallon pail (Product #73245)

    30-gallon drum (Product #732430)

    55-gallon drum (Product #732455)

Anti-Foam Concentrate Benefits


  • Enhances WWTP efficiency by rapidly reducing foam caused by detergents, surfactants, and organic materials

  • Lowers surface tension of wastewater, preventing foam formation

  • Long-lasting effects with residual antifoam ingredients that prevent re-foaming or scum blanket formation, regardless of pH levels

  • Supports stable biological treatment conditions

  • Minimizes foam-related equipment issues

  • Helps reduce foam-associated odors

  • Saves on maintenance costs and decreases downtime from foam-related problems

  • Easy application via nozzle spray systems when needed

  • Versatile use: Can be dripped into digesters or poured directly into waste streams before foam buildup

Using Anti-Foam Concentrate

    • For optimal results, drip-feed into the influent stream before foam formation begins.

    • Normal application rates range from one quart to one gallon per 10,000 gallons of wastewater.

    • To eliminate heavy scum blankets in digesters, apply a light mist over the foam using a portable sprayer.

    • Once the scum blanket is reduced, continue drip-feeding into the influent stream.

    • Drip-feed directly into the waste stream just before it reaches the digester.

    • For larger amounts of foam, it can be poured directly into the waste stream.

    • Application rates typically range from 25 to 100 ppm (1 quart to 1 gallon per 10,000 gallons of spray or water).

    • Refer to the product label and Safety Data Sheet (SDS) for complete safety information.
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