Formula D-220: Grease & Sulfide Reduction for Sewers and Lift Stations

Grease from homes, restaurants, and various commercial or industrial facilities accumulates in wastewater collection systems. This buildup can reduce flow capacity, produce foul odors, and lead to costly, hazardous sanitary sewer overflows.

Formula D-220 contains grease-eating bacteria that break down and consume grease, fats, and oils in collection systems. This concentrated blend of safe microbes reduces grease accumulation by forming a biofilm on pipe walls, minimizing buildup and enhancing flow, even in low-oxygen conditions. It also helps control unpleasant odors by reducing hydrogen sulfide levels.

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Formula D-220 Features


  • Industrial-strength dry bacteria formulation

  • Biodegradable

  • Includes special micronutrients and stimulants for rapid integration into existing biomass

  • Packaged in convenient, ready-to-use 1/2-lb water-soluble bags

  • Thrives in environments without “free” or dissolved oxygen

  • Environmentally friendly

  • Available in 25-lb pail (Product# 144825)

Formula D-220 Benefits


  • Easy Application: Ready-to-use—just drop the D-220 bag directly into the wastewater flow

  • Grease Reduction: Effectively minimizes grease buildup in sewer lines and lift stations

  • Prevents Blockages: Helps reduce line blockages and enhances flow capacity

  • Less Maintenance: Lowers the need for frequent maintenance and clean-out activities

  • Enhanced Pollutant Removal: Improves the removal of BOD, COD, and TSS

  • Odor Control: Reduces the buildup of organic materials responsible for unpleasant odors

  • Hydrogen Sulfide Reduction: Decreases the presence of hydrogen sulfide

  • Optimizes System Performance: Enhances overall system efficiency and effectiveness

Using Formula D-220


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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