334 County Road 81 Osseo, MN 55369
(888) 366-0999

Dairy Farming

Dairy Farming

500+ milking cows; 400 heifers; 3,000+ acre dairy farm. Manure from the barns is taken to a screw press which reduces the percent solids from 14% to 6%. (solids are then composted in a greenhouse). Liquid manure is then pumped to a geo-covered anaerobic lagoon (#1) where methane is automatically flared. The liquid manure is gravity-fed into a series of 3 additional lagoons with aerators. Field application.

Lagoon #1 (2 million gallons, geo-covered) anaerobic
Lagoon #2 (135,000 gallons) aerobic
Lagoon #3 (121,000 gallons) aerobic
Lagoon #4 (435 gallons) aerobic (Bioreactor) – discharge to farmland.

Application Task
Eliminate odor and reduce BOD.

Methodology
Installation of the Bioreactor System In Lagoon #4 (clarification lagoon).

Impact: (following an operation period of five months)

  • DO levels increased from “0.0 mg/L” to 4.2 mg/L through the clarification lagoon
  • Increased microbial diversity. Flourishing protozoan and metazoan communities. [installation + 5 months]; high MLSS
  • Significant odor reduction; essentially “zero.”
  • Significant biological nutrient removal (BNR)
Steel Plant
Steel Plant
Dairy Farming
Dairy Farming
Food Processing
Food Processing
Winery Installation
Winery Installation
Cheese Plant
Cheese Plant
Fruit Juice Processing
Fruit Juice Processing