Voigtländer water hygiene system (left) and Rotreat landfill leachate plant (right)
Rotreat treatment plant at a landfill site, seen from above

About Hydreatio

Water comes first. Engineering follows the problem.

Hydreatio brings water diagnostics, treatment technology, water hygiene and manufacturer-independent engineering together around one objective: a water system that works for the process, the operator and the long term.

Diagnostics, treatment technology and vendor-neutral engineering with one goal: a water system that works.

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Group
Hydreatio · Voigtländer · Rotreat · Liquid Engineering
Based in
Grünwald near Munich, Germany
Image
Voigtländer water hygiene system, Rotreat leachate plant

Our approach

Better water decisions begin before the equipment is selected.

Hydreatio looks at water quality, operating conditions, process requirements and commercial objectives before selecting the treatment route.

That means the technology follows the problem, not the other way around.

  1. 01Understand
  2. 02Design
  3. 03Implement
  4. 04Monitor
  5. 05Improve

One group · complementary experience

One engineering partner. Three specialist capabilities.

Hydreatio brings proprietary technologies and manufacturer-independent engineering together under one project framework.

Integrated project leadership

Diagnosis, engineering, project coordination and long-term system thinking.

  • Real equipment in flow order: Rotreat bag filters, Rotreat RCDT module array, Voigtländer anolyte tank with dosing pumps, Voigtländer measuring device System planning and integration
    1 Pre-filtration · 2 RCDT membranes · 3 Anolyte dosing · 4 Measurement

    Liquid Engineering

    Manufacturer-independent system planning

    Technologies selected according to the water, the process and the project requirement, not manufacturer lock-in.

    Explore Liquid Engineering
  • Four anolyte dosing pumps with pipework and turbidity measurement in a plant room Product brand in the Hydreatio group
    Anolyte dosing pumps in the plant room

    Voigtländer

    Water hygiene and disinfection

    On-site generation, controlled dosing and monitored water hygiene for drinking, process and cooling-water applications.

    Explore Voigtländer
  • Inside the Rotreat RCDT plant in Galicia with high-pressure pumps, filters and membrane modules Product brand in the Hydreatio group
    RCDT plant, Galicia · 600 m³/day

    Rotreat

    Advanced membrane treatment

    RCDT reverse osmosis and engineered membrane systems for difficult and highly variable water.

    Explore Rotreat

How a project runs

From the water analysis to a working system.

Two glass jars side by side: dark landfill leachate and clear permeateMeasurement panel with controller and flow cell for chlorine, pH and redoxRow of green RCDT membrane modules on a skid with stainless steel pipeworkOpen containers with blue pressure vessels being fitted out in a workshop hallTechnician in hard hat and high-visibility vest working at an open generator cabinet
01 / 05Sample pair of landfill leachate and permeate, Rotreat plant in Slovenia

  1. Understand

    Water quality, system conditions, the operating problem and the objective.

    OutcomeWater analysis and water balance with a clear system boundary.

    Two glass jars side by side: dark landfill leachate and clear permeate
    Sample pair of landfill leachate and permeate, Rotreat plant in Slovenia

  2. Diagnose

    Identify causes, constraints, risks and improvement potential.

    OutcomeAn assessment of technical and commercial feasibility and a proposal for the sensible next step.

    Measurement panel with controller and flow cell for chlorine, pH and redox
    Chlorine, pH and redox measurement, Voigtländer system at Frankfurt Airport

  3. Engineer

    Select and design the treatment architecture.

    OutcomeTreatment objective and technology selection without vendor lock-in, validated against the real feed water by pilot testing where needed.

    Row of green RCDT membrane modules on a skid with stainless steel pipework
    RCDT module row and pipework, pharmaceutical wastewater plant in India

  4. Implement

    Integrate equipment, controls, automation and project delivery.

    OutcomeDelivery as a complete system, with defined interfaces.

    Open containers with blue pressure vessels being fitted out in a workshop hall
    Containerised systems during assembly in the Rotreat workshop

  5. Operate and improve

    Monitoring, service, optimisation and continued technical support.

    OutcomeMeasurement, maintenance and documentation in day-to-day operation.

    Technician in hard hat and high-visibility vest working at an open generator cabinet
    Service technician inspecting the Voigtländer generator at Frankfurt Airport

Evolution of experience

Three decades of treatment practice, now in one group.

The technologies inside Hydreatio were developed in operation, one step at a time.

1993

Disc tube technology

Exclusive representation of Disk Tube products in Austria.

Membrane disc stack, Rotreat 3D product render

2001

Membrane bioreactor

First MBR plant for municipal wastewater in Austria.

MBR membrane module in the tank, Rotreat

2008

Easy Click

Easy Click membrane replacement system developed and implemented.

Easy Click exchange system, Rotreat 3D product render

2022

RCDT 3.0

RCDT 3.0 introduced with up to 13 m² membrane area per module.

RCDT module cutaway, Rotreat 3D product render

2023

Cleaning chemistry

Development work on cleaning chemistry together with Ravago.

Membrane cleaning at an MBR plant, Rotreat

2024

Disinfection

New disinfection system developments introduced.

Three-chamber generator with control unit and cell block, Voigtländer

2025

Liquid Engineering

Manufacturer-independent planning for the entire water cycle.

Equipment from the group: RCDT modules and high-pressure pumps by Rotreat, disinfection tank with chlorine measurement by Voigtländer

2026

FoggingComing soon

Automated room disinfection by fogging anolyte.

Diagram: anolyte generation, dosing and fogging with Voigtländer technology

Today

Three competences, one partner.

Membrane treatment, water hygiene and manufacturer-independent planning under one project framework.

Hydreatio: Voigtländer, Rotreat, Liquid Engineering.

See references Discuss a project

International references

Plants in operation, not projections.
Documented site by site.

Every plant counted here comes from the reference list of the Hydreatio group. The globe visits the sites we can show with our own photographs, from landfill leachate in Galicia to drinking water at Frankfurt Airport.

242
plants in operation
31
countries
1993
first reference
See all references Discuss a comparable project

The people behind the engineering

Experience is built by people.

Hydreatio brings together engineering, product, commercial, technical and strategic experience around complex water challenges.

01 / 12
Christoph Schwager

Christoph Schwager

Chairman & Co-Founder

02 / 12
Frank Voigtländer

Frank Voigtländer

Chief Product Officer

03 / 12
Nick Stübbe

Nick Stübbe

Co-Founder

04 / 12
Corinna Schwager

Corinna Schwager

Head of Int. Fairs and Exhibition

05 / 12
Jochen Tack

Jochen Tack

Head of Sales

06 / 12
Maurice Schmidt

Maurice Schmidt

Chief Innovation Officer & Co-Founder

07 / 12
Pablo Pijoan Garrón

Pablo Pijoan Garrón

Service Technician Engineer

08 / 12
Erik Luhrs

Erik Luhrs

Chief Communications Officer

09 / 12
David Schwager

David Schwager

Managing Director, Rotreat

10 / 12
Thomas Bella

Thomas Bella

Chief Commercial Officer

11 / 12
Robert Gammpmayer

Robert Gammpmayer

Chief Engineer

12 / 12
Franz Heumader

Franz Heumader

Senior Project Manager

Different disciplines. One responsibility.

The objective is not to sell a predefined machine. It is to identify what the water system requires and build the right technical path around it.

See the engineering in practice →

Start with the water problem

Tell us what the system needs to solve.

Whether the challenge is water hygiene, difficult wastewater, process optimisation or a new treatment system, Hydreatio can help define the appropriate next technical step.

Describe your water problemSpeak with our team
Portrait photograph of Jochen Tack, Head of Sales at Hydreatio

Your contact person

Jochen Tack

Head of Sales

+49 89 90 17 39 75 · contact@hydreatio.org

Smart MatchA few questions place your situation and show the most useful next review step.› Speak with our teamPrefer a conversation to a form? We assess the situation and name the next step.› Send a water analysisAlready have analysis values? Send them and receive a first technical assessment.›