BioHaven Oxygenation Platforms combine the benefits of biofilm-reactive surface area and deep aeration to mitigate harmful algae blooms without chemicals

HABs lead to methane emissions

Harmful Algae Blooms (HABs) are increasing at an alarming rate world-wide. They kill fish, harm humans and pets, smell terrible and cause dead zones along our coastlines. Worse, when they die, decomposition processes can quickly use up oxygen and start producing methane. But how can a water steward treat HABs without dumping vast amounts of expensive chemicals in the water and turning them into methane-producing sludge, making a bad situation worse? Naturally, we have a solution: BioHaven Floating Islands and Floating StreamBed, that harness nature's own processes to provide perennial, sustainable solutions.

All BioHaven Floating Islands provide a degree of protection against HABs by dealing with the excess nutrient loading that is the primary cause. As long as there is circulation and aeration in the water, the BioHaven matrix can attract the microbes and form biofilm to perform natural and effective nutrient removal. The BioHaven Floating StreamBed is particularly effective in treating and preventing HABs.

BioHaven Oxygenation: Floating StreamBed

The StreamBed is a self-supported oxygenation system that uses airlift technology to initiate a stream-flow on top of a floating island. In the original design, a stream is guided horizontally through a channel "cutout" in the top of the island, which has matrix on the bottom and sides, with the top being open to air.

An innovative design modification allows the "stream" to be run through a vented pipe instead of an open channel. This allows us to manipulate the oxygen concentration in the pipe by adding nanobubbles and micro bubbles, then deliver the stream back to the waterbody at the same temperature and depth it was drawn from.

Why is the StreamBed so effective and desirable?

By keeping the temperature constant between the intake depth and re-insertion depth, the StreamBed prevents de-stratification and mixing. This makes several desirable outcomes possible for the lake or pond manager:

You can target just the area that's causing the problem, which is the deep spot at the bottom of the pond or lake where sludge accumulates. This makes for a cheaper solution than treating the whole lake.
You can contain the methane that has already built up and not send it bubbling to the surface.
It takes a layer of only 2 mg/l of oxygen on the benthic surface to provide the conditions needed for methane prevention. By using bubbles that sink, along with regular small air bubbles, you can keep that small area well oxygenated, so that the methanotrophic bacteria that "eat" methane thrive while the methanogens that produce methane starve.
The surface area of the BioHaven matrix provides habitat for methanotrophs, which congregate and form biofilm, become far more effective than free-swimming bacteria.
You can begin the process of applying for carbon credits for all the methane you prevent, based on before-and-after measurements. Depending on the size of your system, you might qualify for Renewable Energy Credits (RECs) for floating solar power generation.

The original BioHaven StreamBed in action.

Before and after treatment with BioHavens

An early prototype showing the streambed, with water flowing across gravel (more surface area) placed on top of the matrix

An engineer's drawing showing the profile of the streambed channel. The airlift is situated on the left and water is drawn up towards the deflector plate, which causes the stream to flow horizontally, left to right in the diagram.

The StreamBed can be powered by floating solar to provide very cost-effective and efficient oxygenation that is extremely reliable and trouble-free

An affordable off-grid aeration system that rapidly improves DO.
A floating island “filter” optimized for enhanced biological nutrient removal.
Effective treatment for HABs and methane emissions from lakes.
Promotes fish growth and health.
Can treat targeted areas at depth without loss of pressure.
Easily moved to expand range.
Battery storage for 24/7 operation.
Scalable; can be included in large-scale floating solar projects to mitigate oxygen depletion.

A solar-powered StreamBed:

takes the oxygen down to the area to where it is most needed
specifically targets only the area to be treated
supports solar panels to power the airlift system
provides an exceptionally cost-effective treatment option

BioHaven StreamBed is a game-changer in preventing and treating Harmful Algae Blooms and fighting methane-fueled climate impacts.

How Plastic Will Save Our Water

Ideal applications for BioHaven StreamBed:

Harmful Algae Blooms (HABs)
BioHaven and Partner Technologies are a game-changer in HAB and Golden Algae treatment & prevention

Wastewater
How we bring BioHaven treatment to wastewater lagoons while providing economic and social opportunities

Click for pond and lake stewardship, stormwater management, fisheries enhancement, shoreline protection and wastewater treatment using BioHaven Floating islands.

BioHaven Floating Islands prevent thousands of superior-quality plastic drinking-water bottles from ending up in the landfill every month