Contact Info

OxyTurbine development department
Kozlovičeva Ul. 21
SI6000 Koper
Slovenia – EU

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Marija Dravinec / Stritarjeva Ulica 6 / SI6000 Koper / VAT: 76971325 / Slovenia – EU
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Dissolved Oxygen – DO

General Information About Dissolved Oxygen and oxygen necessary for good water quality. A good level of dissolved oxygen is essential for aquatic life.

  Dissolved Oxygen – DO


   A reasonable level of dissolved oxygen is essential for aquatic life.  Dissolved oxygen analysis measures the amount of gaseous oxygen (O²) dissolved in an aqueous solution. Oxygen gets into the water by diffusion from the surrounding air, by artificial mechanical aeration (rapid movement), and as a waste product of photosynthesis.
The self-aspirating aerator is one of the most advanced and efficient aerators available today. With the unique design of our floating/surface turbine aerator, we can meet the high-capacity water movement with aeration. We specialize in pond aeration and pond aerator for sewer, oxidation ponds, and aquatic life.
Adequate dissolved oxygen is necessary for proper water quality.  Oxygen is also a vital element in all forms of life.  Natural stream purification processes must adequate oxygen levels to offer for aerobic life forms.  As dissolved oxygen levels in the water drop below 5.0 mg/l, aquatic life is put under stress. The lower the concentration, the greater the stress. Oxygen levels that stay below 1-2 mg/l for a few hours can result in massive fish kills.

Airflow Measurements

Airflow Measurements

   The size of the dissolved oxygen clusters determines the buoyancy of these clusters. Due to the shearing action of the rotating turbine, the size of the dissolved oxygen clusters has been measured as small as 0.25 millimeters or less. Such a small cluster size means that the dissolved oxygen has a very long retention time in the liquid. These super tiny bubbles partly explain why the OxyTurbine can outperform larger and less efficient aerator. It is creating bubbles so small that the microbes have an easy time “aspiring,” i.e., “breathing” the oxygen. More importantly, these little bubbles have almost no buoyancy, meaning that they do not rise and escape to the surface. This figure equates to a very long retention time in the water, which is critical to microbial remediation in wastewater.
The appearance of dissolved oxygen in water is a natural occurrence due to the physical nature of water. This phenomenon is harmless and has no bearing on water quality. Cold water has a higher capacity for holding dissolved oxygen. As the water begins to rise in temperature, the dissolved oxygen is released.
There are many other biological processes for treatment of wastewater, for example, activated sludge, trickling filters, rotating biological contactor and bio-filters. They all have in common the use of oxygen (or air) and microbial action to remediate the pollutants in wastewater.

Turbine Aeration Efficiency calculation

Dissolved Oxygen Drop in static Fresh Water in 26 days period

  Dissolved Oxygen and self-aspirating aerator


The self-aspirating aerator has proven effective in

Wastewater Oxygen Demand

Wastewater Oxygen Demand

1.) Reducing biochemical oxygen demand,

2.) Pre-treating water used in treatment systems for drinking water,
3.) Reducing Algae blooms,
4.) Reducing chemical oxygen demand,
5.) Reducing sludge,
6.) Reducing stress in fish,
7.) Supporting aquatic organisms,
8.) mediating livestock waste,
9.) Improving fish health,
10.) Reducing noxious odors in waste lagoons,
11.) Improving water clarity,
12.) Reducing mosquito populations,
13.) Improving the quality of fisheries,
14.) Preventing freezing in wastewater ponds, and
15.) Improving small liquid aeration applications.

   With the toothed, synchronous drive system, we can change the speed, performance, and energy consumption of an aerator for a given horsepower. Each aerator produces two distinct mixing zones for complete mixing of the biomass.
Our self-aspirating aerator can be installed in lagoons, ponds, aeration basins, and oxidation ditches. We have aerator sizes which are available in 0,5 to 3 HP or 0,37 – 2,2 kW single phase and 3 to  10 HP or 2,2 – 7,5 kW three-phase.

Aeration basins are used in a process called activated sludge. Activated sludge is a biological process whereby oxygen is bubbled through the water, providing aeration. Microorganisms or “bugs” are suspended in the wastewater by the aeration. The mixture is known as “mixed liquor.” The bugs break down the wastes into carbon dioxide (CO²) and water.  An aerated lagoon or aerated basin is a holding and treatment pond provided with artificial aeration to promote the biological oxidation of wastewater.

Performance Bubble size and comparison of other aerator

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