Formula D-500A & Formula D-500C
Supplements for Wastewater Treatment

Accelerate organic waste breakdown for optimal system performance

Why use Formula D-500A & Formula D-500C?

Challenges such as high or variable influent loads and nutrient imbalances can negatively impact treatment efficiency in wastewater systems.

Formula D-500A and D-500C are expertly formulated with microorganisms, growth stimulants, broad-spectrum enzymes, surface tension depressants, and penetrants to boost biodegradation. They effectively degrade a wide range of wastes including surfactants, solvents, polymer residues, starches, cellulose, fats, oils, greases (FOG), and petroleum hydrocarbons.

Get Price Quote

Explore further details about this microbial supplement

Features

  • Industrial-strength dry bacteria formulation
  • Formula D-500A – for WWTPs with GPD over 1 million
  • Formula D-500C – for WWTPs with GPD under 1 million
  • Biodegradable and environmentally friendly
  • Contains microorganisms, growth stimulants, enzymes, surface tension depressants, and penetrants
  • Packaged in convenient, ready-to-use ½-lb water-soluble bags
  • Effective in environments without dissolved oxygen
  • Available in 25-lb pails (D-500A Product# 143725 and D-500C Product# 143830)

Benefits

  • Degrades surfactants, solvents, polymer residues, starch, cellulose, fats, oils, greases, and hydrocarbons
  • Improves sludge settling and dewatering
  • Reduces hydrogen sulfide production
  • Enhances BOD, COD, and TSS removal
  • Controls surface foam and filamentous growth
  • Minimizes odors and reduces overall sludge volume

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.* 1½ 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 rates 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 30°C (86°F) 10°C (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.