- Model CAFO - Lagoon


WTR's Fine Bubble Diffusion Technology Aerator converts the average existing CAFO lagoon or waste storage tank into an aerobic waste treatment system. Dissolved Oxygen breaks down existing sludge while treating incoming waste. WTR uses a patented aeration system, whereby tiny air bubbles are pulled into the tank or lagoon waste water. The oxygen from the air supports natural aerobic bacteria, which break down the sludge and odor causing elements in waste water, converting it to odorless liquid and gases.


Biochemical Oxygen Demand (BOD) is the amount of oxygen taken by bacteria from water when organic matter is oxidized, or broken down. The WTR uses this natural process to break down sludge and other waste solids that build up in a waste storage system.

The Grimesland Swine Farm in Greenville, North Carolina, runs at a capacity of 400 finish hogs weekly. The fifteen year old, ten foot deep lagoon had settled sludge to a depth of five feet. The lagoon odor was the source of frequent complaints. The installation of three Fine Bubble Diffusion Units showed immediate results.

Primary Lagoon

  • Capacity 90,000 GAL
  • Depth 10 FT

Pretreatment Conditions

  • Extreme Odor
  • BOD 3238 PPM (2430 LBS BOD)
  • COD 9757 PPM
  • TSS 2700 PPM
  • Sludge Depth 5 FT

Post Treatment Conditions (After 21 Days)

  • No Odor (After 48 HRS)
  • BOD 571 PPM (428 LBS BOD)
  • COD 2527 PPM
  • TSS 2700 PPM
  • Sludge Depth 3.5 FT

Total Reduction Summary (After 21 Days)

  • Existing Waste 2002 LBS BOD
  • Waste Produced 3948 LBS BOD
  • Total BOD Controlled 5950 LBS BOD

Unit Performance Summary

  • Units Installed three 1/2HP Models
  • Waste Controlled 283 LBS BOD per Day
  • Oxygen Required 566 LBS per Day
  • Unit Performance 188 LBS Oxygen per Unit per Day

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