Formula 25DW: Optimize Dairy Waste Processing with Beneficial Bacteria

Dairy and milk processing wastewater typically contains a high organic load, elevated nutrient levels, suspended solids, and fluctuating flow rates. Managing this wastewater can be challenging due to the variety of organic waste present and the frequent use of cleaning agents in the process.

Formula 25DW is a specialized blend of carefully selected microorganisms and micronutrients designed to enhance the breakdown and metabolism of organic materials. It is highly effective in treating both liquid and solid manure, as well as wastewater from milk rooms, holding areas, and barns.

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Formula 25DW Features


  • Industrial-strength dry bacteria formulation

  • Biodegradable and eco-friendly

  • Formulated with surface tension depressants, micronutrients, growth stimulants, broad-spectrum enzyme systems, and penetrants, along with microorganisms

  • Conveniently packaged in ready-to-use 1/2-lb water-soluble bags

  • Thrives in environments with no “free” or dissolved oxygen

  • Available in a 25-lb pail (Product# 142879)

Formula 25DW Benefits


  • Provides a complete formulation for maximum biological activity and reacts with dairy waste to produce biological enhancers

  • Reduces the volume of waste and sludge build-up

  • Minimizes odors

  • Enhances BOD, COD, and TSS removal

  • Improves microbial balance

  • Reduces hydrogen sulfide

  • Boosts system efficiency

Using Formula 25DW


Dosing Schedule:
Flow Rate Initial Dosage Maintenance
Up to 1,000 GPD ½ lb. per day for 3 days ½ lb. per week
Up to 5,000 GPD ½ lb. per day for 3 days 1 lb. per week
Up to 20,000 GPD 5 lbs.* 1 ½ lb. per week
Up to 50,000 GPD 8 lbs.* 2 lb. per week
Up to 250,000 GPD 15 lbs.* ¼lb. per day
Up to 500,00 GPD 25 lbs.* ½lb. per day
Up to 1 MGD 50 lbs.* 1 lb. per day
Up to 5 MGD 50 lbs. per MGD* 1 lb. per MGD per day
Up to 12 MGD 50 lbs. per MGD* ¾ lb. per MGD per day
Up to 100 MGDD 30 lbs. per MGD* ½ lb. per MGD per day
* Spread this initial dosage out over the course of 10 days.

* * Add as regularly as possible. If it is required to miss one day, add that day’s product with the next dosage.

Dosage rate will vary with flow rates, retention times and system variations.

Do not add to the treatment system at a location where toxic or otherwise adverse pH, dissolved oxygen or temperature conditions may exist at peak levels.

For optimal results the wastewater and treatment system should meet the following conditions:
Optimum Minimum
Influent pH 7.0 5.0
Dissolved oxygen, ppm 2.0+ 1.0+
C/N/P ratio 100/10/1 100/5/1
Temperature 30°C (86°F) 10°C (50°F)
Toxic metals, ppm
(E.g., hex., chromium)		 0 0

Storage and Handling:

Storage: Store in a cool, dry place.

Handling: Wash hands thoroughly with warm, soapy water after handling.

See label and SDS for safety information.


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