The home of Theo

Simulation software, expert consulting and plant optimization for municipal wastewater treatment facilities

What do we do?

Dynamic Simulation

We develop Theo, the state-of-the-art simulator for wastewater treatment facilities

Process Consulting

Expert guidance on activated sludge processes, nutrient removal, and biological treatment optimization

Plant Optimization

Data-driven strategies to improve efficiency, reduce operational costs, and ensure regulatory compliance

Theo

Advanced dynamic modeling for process optimization and decision support

Modern simulator for your modern hardware

Theo models your whole plant — biology, chemistry and hydraulics together — and solves it fast enough to explore, not just to wait. Lay out a flowsheet, press play, and watch the entire works come to life.

Theo simulating a three-train activated sludge plant, with live effluent tables and charts
Watch it run

See a run unfold

Lay out a plant, press play, and Theo works through time — flow rates, effluent tables and charts updating step by step as the simulation progresses.

Rich output

Every variable, charted

Concentrations, reaction rates, saturation ratios, mass balances — plotted and tabulated across the whole flowsheet, and one click from export.

A grid of Theo output charts: concentrations, rates and saturation ratios over time
Flowsheet editor

Build any plant layout

Drag in reactors, clarifiers, thickeners, digesters and splitters, wire them together, and Theo keeps the underlying model consistent as you go — from a single line to a sprawling multi-train plant.

Your hardware, your rules

On your desk, or in your pocket

Runs natively on Windows, macOS and Linux — entirely on your own machine or in your cloud, you decide. iOS and Android clients connect to a Theo instance on your desktop or server.

I want to know more
A membrane bioreactor plant modelled in Theo, shown on a MacBook
Theo mobile client showing live result charts

Fast by design

Respect the rules of model building, add modern numerical methods and hardware acceleration, and a whole new range of questions becomes answerable in seconds.

True to reality

No shortcuts you would regret. Full pH chemistry and multi-step nitrification stay switched on — because your plant never turns them off.

Standing on giants

A blend of in-house experience and published, peer-reviewed models, integrated across the entire plant rather than stitched together unit by unit.

A modern interface

Tired of user interfaces from the 90s? So are we. Theo is clean, quick and intuitive from the first click.

Theo is currently in beta.

Become an early adopter

Consulting

Process Engineering & Optimization

Comprehensive process engineering services focused on biological treatment systems

  • Activated sludge process design and optimization
  • ASM model calibration and validation
  • Nutrient removal system evaluation (N & P)
  • Secondary clarifier analysis and design
  • SRT and HRT optimization studies

Plant Performance Assessment

Detailed assessments of treatment plant operations to identify improvement opportunities

  • Comprehensive plant audits and data analysis
  • Operational troubleshooting and diagnostics
  • Regulatory compliance evaluation
  • Energy consumption analysis
  • Process bottleneck identification

Dynamic Modeling & Simulation

Advanced simulation capabilities for informed decision-making

  • Custom plant-specific model development
  • Scenario analysis for capacity upgrades
  • Peak flow and upset condition studies
  • Treatment strategy comparison
  • Long-term performance predictions

Training & Knowledge Transfer

Specialized training programs to build your team's expertise

  • Biokinetic modeling fundamentals
  • Simulator operation and interpretation
  • ASM model theory and application
  • Process control strategies
  • Data analysis and interpretation

Who's in Charge?

Let's Talk!

We'd love to discuss how we can help optimize your treatment plant

Contact Information

Address

Nonlineum Labs, 5 Rakoczi St., Fertoszeplak, Hungary, 9436

Teams

robert@nonlineum.com

Email

info@nonlineum.com

Phone

+36 30 945-8739