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Pond Aeration Facts: Double Bubble Technology

  
  

When aerating ponds, two bubbles are better than one

The Setup

We keep saying “Our MARS Aerator utilizes Patented Double-Bubble Technology to both mix and aerate your pond.” That’s all well and good, but what do we really mean? Let’s see if we can clear that up…

A very brief introduction to diffused aeration: There are two types of diffused aeration. These are 1) Coarse Bubble Aeration and 2) Fine Bubble Aeration. The coarse bubble aeration technique utilizes fewer, larger bubbles. Outside of the MARS Aeration technology, coarse bubble aeration is rarely seen in the pond aeration field. Conversely, fine bubble aeration employs the use of more, smaller bubbles in order to aerate.

Due to the science behind these techniques (stay tuned!), coarse bubble aeration will never oxygenate as well as fine bubble aeration. Likewise, fine bubble aeration will never mix as well as coarse bubble aeration. There has to be some give and take either on the side of oxygen output or mixing action. That’s the way it’s always been.

I say thee nay!

This aeration-world status quo wasn’t good enough for us, and this dissatisfaction is what eventually lead us to Double-Bubble Technology. I’ll now see if I can try and explain how we (and you) are able to have our cake and eat it too.

Find out if the MARS Aerator is right for your pond.

The Players

Bubble #1: The Coarse Bubble.

Size: Larger than 2mm in diameter.

Skills Include: Mixing Water, Destratifying Pond Layers, Breaking down Nutrients

Catch Phrase: “Bigger is better.”

The Coarse Bubble is expelled from a tube in the middle of the MARS Aerator. Being a larger bubble, it causes a more violent displacement of water to occur. This water displacement results in a mixing of the pond water.

Think about heating water on the stove. As little bubbles start to rise, the water in the pot remains relatively still. But once the water begins to boil, larger bubbles are formed and rise to the surface. Then what happens? The water begins to churn about and you can see there is a definite mixing action occurring in the pot. The same basic principle applies to the effect of the coarse bubble on your pond. This not only reduces pond stratification, but also causes bacteria to come into close contact with nutrients, which helps to break them down more quickly.

Additionally, the larger displacement of water creates a suctioning effect that will gently pull excess sludge and stagnant water from the bottom of the pond. It will then be mixed in with the rest of the water and broken down by bacteria, leading to a much happier, healthier pond ecosystem.

Intrigued? Learn more about the MARS Aerator.

Bubble #2: The Fine Bubble.

Size: Smaller than 2mm in diameter.

Skills Include: Possessing a High Oxygen Transfer Efficiency, Maximizing Surface Area, Long and Leisurely Trips to the Surface

Catch Phrase: “Less is more.”

The Fine Bubble is released through diffuser membranes, which expel up to 30-50 thousand bubbles per second. That means that in under a day and a half, fine bubble diffusers can release as many bubbles as there are people in the world today. In three weeks it can release as many bubbles as there are stars in the Milky Way Galaxy. Through an increased number of small bubbles, versus a decreased number of large bubbles, fine bubble aeration is able to release more oxygen into the pond due to its greater surface area.

Think about one large bubble, floating to the surface of a pond. How much overall bubble is touching the water? Now break that one bubble into a thousand little bubbles. The overall bubble-to-water contact clearly increases. More bubble-to-water contact means more opportunity for oxygen to be transferred. Additionally, fine bubbles rise to the surface of the pond much slower than coarse bubbles. By spending more time in the water, fine bubbles have more opportunity to transfer their oxygen to the pond. These are the main concepts behind fine bubble aeration and why it has a higher oxygen transfer rate than the coarse bubble. The higher the oxygen transfer rate, the more oxygen is released into the pond, and the healthier the pond becomes.

The Result

Double Bubble Technology

With the combination of the coarse bubble and the fine bubble, eliminating pond algae and managing your pond has never been more effective and efficient. The mixing of the coarse bubble combined with the oxygenating of the fine bubble creates a pond aerating force the likes of which have never been seen, in the form of the MARS Aerator.

Learn about the benefits of eco-friendly pond aeration.

Get more info about the MARS Aerator and how it can help you solve your pond problems.

Comments

Even though we know that fine bubbles offer more surface area and better utilization of the air water interface, the energy needed to force air to the bottom of the pond is high. As a result the cost of operation is no different than other types of pond aerators, especially those that have high efficiency ratings, (ex paddle wheels). 
Chuck
Posted @ Wednesday, September 21, 2011 8:52 AM by Chuck
Hi Chuck - Generally speaking there are two ways to aerate water: put the air into the water (diffused aeration) or put the water into the air (surface aerator, paddle wheel, fountain, etc). Due to the fact that water is denser than air, it requires more energy to move water than it does air. Granted, as you say, energy is certainly necessary to pump air to the bottom of a lagoon. However, it would take a lagoon of significant depth to make diffused aeration less efficient. GSEE is the only independent aeration testing lab in the United States. According to their analyses based one thousands of tests, fine bubble aeration will fall into the range of 4-7 pounds of oxygen transferred per horsepower hour. Surface aeration such as paddle wheels will fall within the range of 2.5-3.5 pounds. Additionally, we know from our experience in wastewater management that facilities can save thousands of dollars per year in switching from surface aeration to fine bubble aeration. For this very reason, much of the wastewater treatment industry is moving to diffused as opposed to surface aeration. It is possible that there are systems out there that fail to utilize the benefits of fine bubble aeration efficiency, but as a general rule it is more efficient.
Posted @ Thursday, September 22, 2011 5:19 PM by Tim LaBarge
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