Photocatalytic water technology

Light that gives water back.

Vāsuqi breaks apart the tough molecules in industrial wastewater that today's treatment steps do not capture or finish — with visible light on a catalyst, right inside the flow.

  • Climate
  • Food
  • Health
  • Energy
  • Biodiversity
  • Industry

The big picture

Every planetary crisis runs through water.

Climate, food, health and energy all meet in water. So does pollution.

The problem

The hardest pollution is the kind nothing destroys.

Pharmaceuticals, pesticides, dyes, hormones, solvents. They slip past the steps we have and end up in our rivers.

Persistent. Stable.
Volatile. Very small.

The molecules we go after are hard to capture, hard to separate and hard to break.

Who it hits

All of them run on water.

And all of it flows back. The tough fraction is hardest in the wastewater of four industries.

  • Pharma
  • Chemicals
  • Food and beverage
  • Textiles

Where today's steps stop

Some only go part-way. Some just move it.

Biology

Clears the bulk cheaply. Persistent molecules slip through.

Membranes

Hold some back — as a concentrate that still has to go somewhere.

Resins and ion exchange

Load up, then regenerate — the molecules come back in the regenerant.

Activated carbon

Captures, saturates, and the spent media is shipped away.

Ozone · UV · peroxide

Oxidise part of the way — with a dosed oxidant.

Vāsuqi

Built to break the molecule apart.

Vāsuqi ends it.

01

Visible light — no UV lamps.

02

No dosed oxidant, no iron sludge, no concentrate stream to haul.

03

Modular — designed to retrofit existing lines.

We destroy pollution with light · Patent pending · Platform-level

How it works

Light from inside.

  1. In

    Contaminated effluent enters.

  2. Light

    Visible LEDs send light through light-guiding fibres that run through the whole volume.

  3. Catalyst

    Where light meets the catalyst coating, reactive oxygen species form and break the harmful molecules apart.

  4. Out

    Polished water leaves. The catalyst stays in place.

Concept render · not to scale

Light activates the catalyst.

Reactive oxygen species break the bonds.

Broken apart.

Proof

Published.

Complete destruction of some of the toughest pharmaceutical compounds — in hours, not days.

Published, DTU · F. Wu et al., Separation and Purification Technology 364 (2025) 132394

Built.

IMUGI, Vāsuqi's test unit, with the founders in the lab

IMUGI: our fully automated, flow-through, visible-light test unit. Third generation.

Awarded.

Angela Zhang, PhD, Adarsh Raj and Jörg Vogel on stage under falling gold confetti, with flowers and the award

Best Pitch, BII Demo Day 2026 (audience vote, 24 ventures)

Next.

Real industrial effluent tests are under way, and the module design is scaling up for larger flows.

Predictably cheap. Boringly reliable.

What we are building for

The team

Operators who've built water tech before.

Meet the team
Adarsh Raj, black-and-white portrait

Adarsh Raj

CEO

Jörg Vogel, black-and-white portrait

Jörg Vogel

CTO

Angela Zhang, PhD, black-and-white portrait

Angela Zhang, PhD

Chief Scientific Advisor

Peter Holme Jensen, black-and-white portrait

Peter Holme Jensen

Advisor

A clean drop of water floating in a calm sea of light at sunrise

Now partnering for real-effluent pilots.

Investors

Request the investor deck

The deck is not public. Tell us who you are, and Adarsh will send it personally within two working days.

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