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Trio3 Ox Fresh system
The introduction of oxygen and ozone into shrimp rearing ponds is a development of a process that we have utilized in the past on Hog Farm Lagoons. In the USA the effluent from hog farms are stored in large ponds in which aerobic and anaerobic processes take place.
The resulting waste is then sprayed on the land as a fertilizer. This has resulted in massive odors and contamination of well water in the aquifer.
Trio3 Industries invented a process for introducing oxygen and ozone into the pond bottom through a diffusion system that resulted in cleaner water with no pathogens and no odor.
We then took this technology to Ecuador and installed it on a shrimp farm for a company named Rivex. It was a great success, but economic conditions in Ecuador precluded the sale of the systems to that country.
Recently an American company that is a leader in the manufacturing of gases, which include oxygen generators, approached us. They asked if we would develop a method of adding oxygen and ozone into the ponds on shrimp farms. Our first project was on Ocean boy Farms in Florida and the results are spectacular. The shrimp are growing at a phenomenal rate in comparison to the control ponds and the health is vastly improved with a higher survival rate. Nitrites are lowered by 50% and all in all a great success story.
The following has been documented.
- DO level has been maintained at over 6 PPM at night.
- Nitrite is reduced by 50%
- Shrimp grow out is averaging ½ a gram per shrimp per week compared to the control ponds.
- paddlewheels reduced to 5 horsepower per hectare.
- 93% survival versus 78% in control pond.
Very simply if it takes 120 to grow a 35 gram shrimp, it will now reach that size in less than 90 days
How it works
During the daylight hours the algae and other biological growth take the sunlight and in a process convert it into oxygen, which is a very good thing.
At night when there is no sunlight, they consume oxygen and the DO level drops.
If you introduce oxygen and ozone, the plant life is controlled and more oxygen is dissolved into the water and is available for the shrimp.
Instead of having huge and numerous paddlewheels to move the water and try and beat oxygen into it, you have oxygen available to the shrimp for feed conversion, instead of energy conversion to swim against the current generated by the paddlewheels.
It is possible with good feed management to harvest up to five (5) to\ns per hectare using this system.
Paddlewheels deliver most of their oxygen to the surface layers of water, while the shrimp live on the bottom in the most oxygen-starved layers of water. If you compensate by increasing the number of paddlewheels, you create a high velocity whirlpool that interferes with the shrimp’s ability to feed. Assuming your flow distribution is uniform (almost never true) and you put in 15-40 horsepower per hectare of paddlewheel aeration, you have probably exceeded the maximum linear flow velocity for optimum feeding success.
Oxygen and ozone injection at the bottom of the pond, on the other hand, profoundly improves oxygen transfer efficiency and reduces horsepower requirements, per unit volume of water, by roughly 75% In addition, the vertical mixing pattern produces flow velocities that enhance feeding success.
Dissolved oxygen (DO) levels never fell below 5.0 ppm.
The system is expandable off a header pipe delivery system. A serious problem with harvest at high stocking densities is the inability to maintain high DO as the water becomes shallower and you lose a portion of the crop to suffocation. With the Ox fresh system, this will not happen.
The PSA (pressure swing accumulators) oxygen enrichment system is a series of molecular sieve adsorption units that are pressurized to selectively absorb nitrogen out of the atmosphere. As the sieve beds are depressurized back to ambient pressure, they release a stream of enriched oxygen, which is mixed with ozone and delivered to the bottom of the pond. Ozone controls the algae and phytoplankton growth and when done converts back into oxygen, thus increasing the DO level
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