Clean-Water FAQ
Comprehensive question bank for clients, stakeholders, and cynics.
Comprehensive question bank for clients, stakeholders, and cynics.
A Floating Treatment Wetland (FTW) is a bioengineered, buoyant matrix that supports plant growth on open water. Instead of rooting in soil at the water’s edge, specialised wetland plants grow directly on the floating framework and extend their roots straight into the water column to absorb nutrients and
pollutants.
Our Floating Treatment Wetlands go beyond simply placing plants on a floating platform. They incorporate specialised bio-media beneath the wetland, providing a large surface area for beneficial microbial biofilm to colonise. This creates an additional biological treatment zone beneath the plants. The
combination of plants, roots, bio-media, and microbial communities helps remove pollutants from the water.
A common misconception is that simply placing plants on a floating platform creates an effective Floating Treatment Wetland.
Our wetlands are bioengineered systems that incorporate bio-media beneath the floating structure. This provides additional surface area for microbial colonisation and increases the biological treatment capacity of the wetland — supporting significantly higher bacterial growth in the same area.
The plants contribute through nutrient uptake and phytoremediation, while the microbial biofilms growing on the bio-media help break down organic pollutants such as BOD and COD.
This engineered approach is designed for greater durability, predictable performance, and long-term use compared with makeshift floating plant platforms.
Floating Treatment Wetlands use several natural treatment mechanisms working together:
The system therefore relies on plants, microbial communities, roots, and bio-media rather than chemical treatment.
Natural wetlands are generally restricted to shallow shoreline areas, where plants can establish their roots in the underlying soil. If the water level rises significantly, the plants may become submerged; if it falls, they may become exposed and dry out.
A bioengineered Floating Treatment Wetland is designed to float independently on the water surface, allowing it to rise and fall with changing water levels. Because the roots are suspended in the water rather than buried in mud, they can absorb nutrients efficiently, and the system can be deployed in deep
lakes, urban ponds, or drainage channels where natural wetlands cannot survive.
Our systems also incorporate bio-media beneath the floating structure, providing additional surface area for microbial biofilm formation and biological treatment.
Our floating wetlands are made using around 10 different types of materials, with FRP (Fibre Reinforced Plastic) being the primary material used for the main structure.
FRP is chemically inert in water and does not degrade easily, even under high-toxicity conditions. The wetlands also incorporate bio-media beneath the floating structure to provide additional surface area for microbial biofilm formation.
The structure can also be customised using materials such as HDPE, metal, MS, aluminium, or other materials based on the client’s specific requirements.
Yes. We use food-grade and UV-resistant materials in our floating wetlands.
The FRP materials we use are both food-grade and UV-resistant, making them suitable for long-term use in aquatic environments.
We can plant a variety of wetland and aquatic plants on our floating wetlands. Plants are chosen based on their root architecture, nutrient absorption capacity, local climate compatibility, and structural resilience. Commonly used species include:
The exact plant selection depends on the local geography and site conditions. We generally source the plants locally so that we can use species that are naturally suited to the local environment.
Depending on the plant species and nutrient density, roots can grow anywhere from 1 to 4 feet deep into the water column. In highly polluted waters, the root systems tend to grow denser and more extensive to maximise nutrient absorption.
Excess nutrients such as nitrogen and phosphorus, combined with still water and sunlight, are what drive excessive algae growth.
Floating Treatment Wetlands act as nutrient sinks. By locking up dissolved nutrients into plant biomass and supporting microbial processes within the wetland system, they reduce the nutrient availability that algae rely on, making conditions less favourable for algal growth.
However, controlling persistent algal blooms also requires addressing the source of nutrient pollution entering the water body. Floating wetlands should therefore be considered part of an overall water body management strategy rather than a standalone solution for every algal-bloom problem.
Floating Treatment Wetlands contribute to overall water quality improvement by helping remove nutrients, BOD, COD, and other pollutants, which indirectly supports a healthier aerobic state.
However, they are not our primary tool for odour removal. For foul odours, particularly those associated with anaerobic conditions, our beneficial microbial cultures and aeration systems are more directly effective. Aeration increases dissolved oxygen, while microbial cultures help break down the organic
matter responsible for the odour.
The three technologies therefore complement one another, with each addressing a different part of the water quality problem.
That is a fair point. Among our three main products — aerators, microbial cultures, and floating wetlands — the contribution of floating wetlands specifically towards water quality improvement is actually the lowest. Microbial cultures are by far the most potent tool for direct water quality improvement.
Heavy machinery can certainly remove a significant amount of pollutants or physical waste, but floating wetlands serve a broader purpose. They not only contribute to water quality improvement but also provide habitat for fish, birds, and other aquatic life, support biodiversity, and improve the aesthetics of
the water body.
Also, our floating wetlands are not simply makeshift platforms designed to make plants float. They are bioengineered systems that incorporate specialised equipment and bio-media, allowing us to support significantly higher bacterial growth — around 5 to 10 times more bacteria in the same area — which
increases their contribution to nutrient removal and water quality improvement.
So we do not position floating wetlands as a replacement for every form of mechanical treatment. Rather, they are one part of a broader ecological water treatment system, with microbial cultures doing the heavy lifting on water quality while floating wetlands add treatment, habitat, biodiversity, and beautification.
Certain plants such as Vetiver and Typha are effective at absorbing heavy metals through a process called hyperaccumulation, locking the metals into their structural tissue.
Where there is a significant heavy-metal load, we generally recommend increasing the amount of vegetation or the number of floating wetlands. The harvested biomass then needs to be managed appropriately.
Please note that this applies to heavy metals in freshwater bodies. We do not undertake the treatment of industrial effluent, extremely toxic industrial dyes, or highly saline water as part of our standard water body rejuvenation solutions.
Yes. The islands are modular. Individual floating blocks can be linked together like puzzle pieces to create long linear strips for narrow drains, scattered circular clusters for public parks, or large rectangular configurations for major lake remediation projects.
They create immediate, protected mini-ecosystems:
No. In fact, they help control mosquito populations.
Stagnant, polluted water is what breeds mosquitoes. Floating islands attract natural predators such as ragonflies, damselflies, and small surface-feeding fish that consume mosquito larvae beneath the matrix. We also introduce larvae-eating fish such as Gambusia wherever suitable.
Physical filtration and microbial colonisation begin within a few days of installation. Visible plant growth and flowering typically take 4 to 8 weeks, depending on the season and the nutrient level of the water body.
The structural buoyant matrix is designed to be highly durable, typically lasting 10 to 15 or more years in aquatic environments due to its UV-resistant and rot-proof composition. The plants themselves are perennial and continuously regenerate.
Most of the plants used in our floating wetlands tolerate a wide range of temperatures and are suitable for tropical climates. However, if temperatures drop below freezing or rise above approximately 50°C, some plants may begin to wither or die.
In colder conditions, plants typically enter a natural semi-dormant phase. Top leaves may brown slightly, while the underwater root structures and associated bacterial biofilms remain active. Once temperatures rise again, the plants often regrow on their own, and a quick trim ahead of spring prompts revival. Affected plants can also simply be replanted.
Extreme freezing conditions can, however, cause damage to the vegetation.
Selected hardy wetland species can tolerate a wide pH range, roughly 5.5 to 8.5.
For highly industrial wastewater with extreme pH fluctuations, water buffering is recommended before the water reaches the floating ecosystem.
Our Floating Treatment Wetlands are designed to occupy only a small fraction of the water body’s surface area.
As a typical design approach, wetland coverage is around 0.5% of the total surface area and generally remains below 1%, depending on the project’s treatment requirements.
This leaves the vast majority of the water surface open for normal aquatic activity. Placement and configuration can also be planned to avoid interfering with important operational areas.
Once you place the order, it generally takes 30 to 45 days for manufacturing. Transportation usually takes another 2 to 4 days, depending on the distance from our manufacturing facility in Dewas, near Indore.
Once the products reach the site, installation generally takes one to two days.