Formula D-500A and Formula D-500C - Bacteria supplements for wastewater treatment plants

Problems such as high or variable influent loads and nutrient imbalances can lead to poor treatment efficiency and quality.

Formula D-500A and Formula D-500C contain microorganisms, surface tension depressants, micronutrients, growth stimulants, broad spectrum enzyme systems, and penetrants designed to improve wastewater treatment performance by degrading a variety of wastes including surfactants, solvents, polymer residues, starches, cellulose, FOG, and petroleum hydrocarbons in WWTPs.

Get Price Quote

Formula D-500A/C Features


  • Industrial strength dry bacteria formulation

  • Formula D-500A - for wastewater treatment plants with a GPD over 1 million

  • Formula D-500C - for wastewater treatment plants with a GPD under 1 million

  • Biodegradable

  • It contains surface tension depressants, micronutrients, growth stimulants, broad spectrum enzyme systems, and penetrants in addition to microorganisms

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

  • Lives and reproduces in an environment containing no “free” or dissolved oxygen

  • Environmentally friendly

  • Available in 25-lb pail -- D-500A (Product# 143725) and D-500C (Product# 143830)

Formula D-500A/C Benefits


  • Degrades many types of wastes including surfactant, solvent and polymer residues, starch, cellulose, FOG, and petroleum hydrocarbons

  • Better sludge settling and dewatering

  • Reduces hydrogen sulfide

  • Enhances BOD/COD/TSS removal

  • Controls surface foam and filamentous growth

  • Reduces odors

  • Reduces total sludge volume

Using Formula D-500A/C


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.

(800) 314-3862

sales@EHCdirect.com

©2024 - Enviro-Health Corp.