Formula 21HG - Grease control bacteria for wastewater treatment plants

FOG (fats, oils, and grease) can cause several problems in wastewater treatment plants and food processing facilities including clogging and blockages, odors, equipment damage, reduced treatment efficiency and the possible collapse of filter-bed media.

Formula 21HG reduces accumulation of sewer grease and other organic deposits in wastewater treatment plants and food processing facilities. It establishes a biomass capable of breaking down and digesting the difficult wastes of substances such as meat, cooking oil, margarine, butter, shortening, dairy products, etc.

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Formula 21HG Features

  • Industrial strength dry bacteria formulation

  • Contains a specially formulated range of high-performance microorganisms developed for use in the bioaugmentation of treatment plants and collection systems

  • Biodegradable

  • 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 (Product# 146425)

Formula 21HG Benefits

  • Increases system efficiency

  • Helps establish a biomass capable of breaking down and consuming FOG and other organic substances

  • Prevents the blocking, ponding and possible collapse of filter-bed media

  • Enhances BOD/COD/TSS removal

  • Improves sludge settlement

  • Reduces hydrogen sulfide

  • Reduces foul odors

  • Can reduce equipment repairs associated with FOG accumulation

Using Formula 21HG

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