Have you ever noticed some devices while taking a stroll by the lake or the river? Some of them look like fountains, others like little boats, and still others resemble swimmers endlessly practicing their strokes...

Today, I’ll give all of you friends who live near lakes, rivers, and ponds a comprehensive explanation of exactly what those various devices you see floating in the middle of the water are used for.

Although they come in various shapes, they all serve a single purpose: to oxygenate water bodies.

The surface aeration devices commonly used by us can be broadly categorized into three types:

 

Push-flow aeration boat/machine: By means of aeration and flow promotion, we can enhance the circulation and mixing of water bodies, increase the oxygen concentration in the water, and thereby improve water quality.

 

Landscape fountain aeration: The submersible pump draws and pressurizes water, which is then sprayed through nozzles to create water jets. As these jets disperse in the air, they carry oxygen back into the water body, thereby increasing its oxygen levels and also adding aesthetic appeal.

 

Standard aeration disc: Air or oxygen is delivered into the micropores of the aeration disc, forming a large number of tiny bubbles. These tiny bubbles rise through the liquid and release oxygen, thereby enhancing gas-liquid mass transfer efficiency, increasing oxygen solubility, and promoting the decomposition of organic matter in wastewater.

But you’ll also find that some rivers and lakes, despite years of remediation efforts, continue to be plagued again and again by persistent black-and-odorous water and algal blooms. Why is it that despite the implementation of remediation measures, they still fail to work effectively?

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The Real “Silent Killer”: Overflow Pollution After Heavy Rainfall!

If you’ve ever experienced rivers and lakes near your home that “smell awful as soon as it rains,” then you’ve personally witnessed exactly what—

[Runoff Pollution Impact]

 

Heavy rainfall instantly washes away pollutants, surface debris, and organic matter that have accumulated in urban drainage systems, causing these substances to surge into rivers and lakes in a short period of time.

Their oxygen consumption rate far exceeds the self-purification capacity of the water body, causing dissolved oxygen levels in the water to plummet sharply. As a result, aquatic organisms suffer from oxygen deprivation and die, and anaerobic water bodies quickly turn black and foul-smelling.

This is a sudden shock that most conventional technologies are simply powerless to handle.

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Why traditional governance techniques struggle to combat overflow pollution?

Surface Aeration (Aeration Boats, Fountain-Type, etc.) The surface aeration device mentioned earlier refers to surface aeration, which increases oxygen levels in the water body. However, the effectiveness of this technology is limited to only about 1–2 meters below the water surface, and it cannot address the issue of hypoxia at the bottom layer. Moreover, its intense stirring action can severely disturb the sediment, releasing ammonia nitrogen, phosphorus, heavy metals, and persistent organic pollutants that have been adsorbed onto the sediment into the overlying water, thereby causing serious “secondary pollution.”

Chemical addition (flocculant, algaecide) Commonly referred to as "underwater dosing," this is a masking treatment that transfers pollutants from the liquid phase into the solid phase (sediment) rather than actually removing them. As a result, it not only fails to eliminate the pollutants but also exacerbates the accumulation of contamination in the sediment, laying the groundwork for future water quality deterioration. Moreover, the dosage and placement of the substance must be carefully planned and considered; if applied in excess, it could even cause irreversible damage to the ecosystem.

Ecological floating islands and aquatic plant remediation This is an ecological technology that relies on enhancing the natural recovery capacity of water bodies. While long-term deployment has proven effective, it faces challenges from overflow pollution. In environments characterized by severe pollution and oxygen depletion, these floating islands and aquatic plants—along with native vegetation—may die due to pollution and oxygen deficiency. The system is too fragile to withstand sudden shock loads.

Therefore, traditional methods all have their own shortcomings when it comes to routine maintenance or overflow pollution, making it impossible for them to consistently, stably, quickly, and efficiently supply oxygen to the heart of the pollution—the interface between the water body’s bottom layer and the sediment.

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Is there a technology that can directly target underwater pollution and remove it silently?

What we really need is a system that can precisely meet the following conditions:

Oxygen is delivered precisely to the bottom layer, and the aeration process causes virtually no disturbance—no stirring of sediment, no overturning of foul odors. It’s highly efficient and energy-saving, intelligently senses changes in water quality, and automatically ramps up its performance when heavy rainfall strikes.

Doesn't this sound a bit “idealistic”?

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Invisible nanobubbles are sparking a revolution at the bottom of the water.

 

The core of this technology is called the Ultra-Nano Aerosol Re-Oxygenation System.

It doesn’t engage in superficial efforts or vigorous agitation; instead, it chooses—to dive beneath the surface and fight silently.

Its working principle, simply put, consists of two steps:

① “Create superoxygenated water” onshore to directly address the underlying issue of oxygen deficiency.

 

The system delivers the prepared supersaturated oxygenated water through pressurized pipelines to specialized diffusers deployed at the bottom of the water body. Because nano-bubbles rise extremely slowly (in accordance with Stokes' Law), they can remain suspended for extended periods at the interface between the bottom layer and the sediment, directly targeting the accumulation zones of pollutants. This approach fundamentally prevents the “two-layer phenomenon”—where the surface is reoxygenated while the bottom layer remains anaerobic.

② Directly deliver to the heart of the pollution via nano-bubbles.

The release of nano-bubbles is a process characterized by low shear force and minimal disturbance. Their enormous surface tension enables them to be released slowly and penetrate into the micropores of the sediment. By increasing the oxidation-reduction potential (ORP), they oxidize black, odorous FeS into stable Fe(OH)₃, thereby solidifying the sediment in situ rather than stirring it up for subsequent treatment—a fundamental difference from conventional techniques.

Why are nanobubbles “disruptors”?

 

Ultra-nano bubbles exhibit extremely high gas-liquid mass transfer efficiency (>90%) and long residence time in water (up to over 30 days). This means that for every unit of oxygen injected, the utilization rate far exceeds that of conventional aeration (typically <10%).

Zero disturbance, no mud disturbance: slow release, gentle penetration, preventing secondary pollution at its source.

Self-cleaning water technology: The bubble surface carries a negative charge, enabling it to adsorb and decompose pollutants while simultaneously oxidizing the black-and-odorous substances in the sediment.

It also has a “smart brain.”

The intelligent control system dynamically adjusts the equipment’s operating power by continuously monitoring parameters such as DO and ORP, running at high intensity only when necessary to achieve “on-demand oxygen supply” and thereby avoiding unnecessary energy consumption.

As soon as the system “senses” an impending downpour or pollution surge, it automatically boosts its power in advance, quietly safeguarding the health of the water body.

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This is an ecological governance technology innovation driven by a shift in mindset.

The next time you pass by a body of water,

You might not be able to see the various structures floating on the water’s surface, but the crystal-clear water itself may well suggest that beneath this lake lies an intelligent system operating continuously—24 hours a day, seven days a week—maintaining the health of the water body silently, energy-efficiently, and with remarkable efficiency.

It’s not simply a matter of having more advanced technology—it marks a fundamental technological shift in water environment management, moving from a “massive-scale, disruptive, end-of-pipe” approach to a “precise, ecological, and process-oriented” one. This technology not only addresses the current issues of black and odorous water bodies but also lays a solid foundation for the long-term health and resilience of aquatic ecosystems. It can be applied not only to landscape and ecological environment management but also to production sectors such as aquaculture, thereby enhancing both environmental and economic benefits and driving water-body management toward a new era. Pollution reduction To “ Ecological restoration the transformation of “”.

Therefore, it doesn’t really need to be seen—because its very purpose is to let you see the crystal-clear lake water, the fish populations gradually making their way back, and the waterside spaces that no longer emit unpleasant odors...

Addressing water pollution is all about truly serving the people’s livelihoods. And technologies that are closer to the people often blend more seamlessly with nature, quietly and unobtrusively contributing their own value.