Formula D‑220
Grease & Sulfide Reduction for Sewers

Breaks down stubborn grease and reduces sulfide production for cleaner systems

Why use Formula D-220?

Wastewater collection systems often suffer from grease buildup, foul odors, and reduced flow capacity. Formula D-220 utilizes specially selected grease-eating bacteria to break down fats, oils, and grease, forming a protective biofilm that reduces buildup and controls hydrogen sulfide levels.

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Explore further details about this microbial supplement

Features

  • Industrial-strength dry bacteria formulation
  • Biodegradable with special micronutrients and stimulants
  • Packaged in ready-to-use ½-lb water-soluble bags
  • Effective in low-oxygen environments
  • Environmentally friendly
  • Available in 25-lb pails

Benefits

  • Easy application – simply add the D-220 bag directly to the flow
  • Reduces grease buildup and prevents blockages
  • Enhances system flow and reduces maintenance needs
  • Improves removal of organic pollutants (BOD, COD, TSS)
  • Minimizes unpleasant odors
  • Reduces hydrogen sulfide levels

Usage Instructions

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.* ¼ lb. per day
Up to 500,000 GPD 25 lbs.* ½ lb. 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 MGD 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 a day is missed, add that day’s product with the next dosage.

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

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 (°C) 30° (86°F) 10° (50°F)
Toxic Metals (ppm) 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.