LAKE & RIVER CLEAN UP

Stopping trash across
the full width of a river

AlphaMERS deploys floating trash barriers, tandem sweeping boats and floating wetlands that capture solid waste while letting water, aquatic life and boats pass freely.

Aerial view of an AlphaMERS floating trash barrier across a river
FLOATING TRASH BARRIERS

Engineered to arrest, not block

AlphaMERS floating trash barriers (FTBs) are standing mesh structures with hydrostatic and hydrodynamic stability. They capture floating solid waste while allowing water to flow through freely.

Positioned diagonally across a waterway, the barrier directs trash towards a collection point on the bank, where it can be removed efficiently — turning a constant flood of plastic into a problem that can actually be captured.

DEPLOYMENT RECORD

Proven across India's waterways

From the first pilots in Bengaluru and Chennai to commercial deployments nationwide.

9 cities
Gorakhpur, Hyderabad, Bengaluru, Mysore, Coimbatore, Puducherry, Chennai, Thanjavur, Tuticorin
~3,500 m
Total barrier deployed
2015–16
First pilots in Bengaluru & Chennai
22,000 T
Trash captured in 2017, including 2,200 T of plastics
AlphaMERS tandem sweeping boats clearing a weed-covered waterway
TANDEM SWEEPING SYSTEM

Waterjet boats that work in pairs

For open water and lake edges, AlphaMERS developed a waterjet-propelled boat system that operates in pairs to sweep the surface clean.

  • Covers a 10-metre swath per sweep
  • Operates in shallow water along lake and river edges
  • Waterjet propulsion instead of propellers — no fouling from aquatic vegetation
A COMPLETE SYSTEM

More than a barrier

A family of complementary tools that keep surfaces clean, prevent pollution and restore waterways.

01

Floating Trash Barriers

Full-width interception of floating debris with stable, flow-through mesh structures.

02

Tandem Sweeping Boats

Waterjet boats that clear surface trash and weeds across a 10 m swath.

03

Floating Wetlands

Engineered floating vegetation that helps remove biota and improve water quality.

04

Storm-water & drains

Solutions to isolate discharge sites and stop waste entering rivers in the first place.

FROM THE FIELD · ADYAR RIVER, CHENNAI

A 132 m 'conveyor-on-water'

The 132 m barrier across the Adyar river collects floating waste passively — no boats, no fuel. The white specks among the floating biota are plastics and thermocol.

Everything is funnelled to a floating gate at the downstream end, where two people on the riverbank use light hand tools to pick out only the plastics. The remaining biota is released downstream, free of plastics — batch processing that cleans the river without stripping it of life.

See the post on LinkedIn

WATCH · THE STORY BEHIND THE BARRIER

Letting the river clean itself

Watch how Capt. D C Sekhar turned a simple idea into a working river cleanup system. The floating trash barrier uses the current to steer plastics and thermocol to the bank, where they are collected without power, fuel or machinery.

Watch on YouTube

Have a river or lake to clean?

We deploy turnkey systems for municipalities, government bodies and CSR partners.

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