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Dynamita is a software and process modeling company made up of international experts. We are dedicated to providing our clients with the most comprehensive water/ wastewater simulation software package and services.

Our flagship products are SUMO©, a comprehensive wastewater simulation software package, and DYNAMIZU©, a world first dynamic water processing simulation package, both with a user-friendly graphic interface. SUMO© and DYNAMIZU© are unique on the market with their open model and process unit libraries coded in SumoSlang©, a simple-yet-powerful concept, designed with engineers in mind.

What do we cover?

How 40 years and 4 generations of modeling packages changed the world of process design (and what that implies for the users)
The single trick that allows you to check if a process worth tens of millions of dollars is worth spending
How you can optimize a treatment process today, and explore future challenges
What hides beyond the "digital twin" buzzword

Registered in France, the Dynamita employees and contributing partners consist of internationally renowned wastewater process specialist and IT professionals located in Europe and around the world. We speak many languages and are available around the clock with all the benefits of an extended virtual office and unbeatable worldwide experience.

Imre Takács, Ph.D.
President 
[Sigale, France]
Katie Lancelot
Administrative assistant 
[Toulouse, France]
Hélène Hauduc, Ph.D.
Director
[Toulouse, France]
Ferenc Házi
CTO
[Luxembourg]

Andrianavalona Harinaivo
Developer, GUI, AI application
[Paris, France]
Jin Wang
Industrial PhD student
[Toulouse, France]
Hugo Sembinelli
Programmer
[Lille, France]
Karuna Chalumuri
Administration Assistant
[Toulouse, France]

Bernhard Wett, Ph.D.
Vice President 
[Innsbruck, Austria]
Melinda Kujbus
Graphic Designer
[Budapest, Hungary]
Zsolt Haszpra
IT Manager
[Budapest, Hungary]
Csaba Kujbus
Senior Developer, Digital Twin, SumoSlang
[Budapest, Hungary]

Péter Budai, Ph.D.
Senior project manager
[Budapest, Hungary]
Dániel Bencsik
Principal process engineer
[Budapest, Hungary]
Tanush Wadhawan, Ph.D.
North America Director
[Toronto, Ontario,
											Canada]
Maryam Tohidi
Senior process engineer
[Quebec, Canada]

Júlia Pataki

Process engineer
[Budapest, Hungary]

Takayuki Ohtsuki, Ph.D.

Senior Advisor
[Japan]

SUMO from design to operation

September 22, 2026

earthTek, Clean Water Solutions:

SUMO has become an invaluable and integral part of our design process at earthTek. As a packaged wastewater treatment plant supplier, we use it not only to model SBR and MBBR processes, but also to translate those results into equipment selection, operating strategies, and complete treatment systems.

What makes SUMO especially valuable is the flexibility it gives us to evaluate different loading conditions, treatment objectives, and operating scenarios before a system is built. We can then carry that work through startup and operation, compare actual performance against the model, and apply what we learn to future designs.

The software is powerful, intuitive, and transparent, and the support we have received from the Dynamita team has been exceptional. SUMO has given us greater confidence in our designs and has become a tool we rely on throughout the entire life of a project.

Reaching milestones with SUMO

January 20, 2026

Salvatore Plano, WSP UK:

WSP is investing in new digital tools for 2026 to enhance and expedite design assessments for clients. By implementing SUMO, we have reached several milestones, such as producing quicker and more comprehensive mass balance calculations for both current and future solutions. Additionally, we have established a global network platform for knowledge sharing. We are enthusiastic about the software and look forward to exploring its future development of the process platform, including the integration of quaternary treatments (RO, GAC, MBR).

Happy customer in Denmark

October 24, 2025

Peter Tychsen, Lobster, Denmark.

SUMO is the best tool on the market and really, really important also, the best support team ever. Having to design and evaluate stricter effluent demands on e.g. Total-N down to 2.5-3,0 mg/L, dynamic simulation is now a mandatory part of my WWTP process analysis approach. So thank you, Dynamita, for making that part much more enjoyable.

A happy Professor from Estonia

November 16, 2023

Erki Lember, TTK University of Applied Sciences:

Thanks for your and your Team's effort in building the best intuitive WWTP modelling software in the World!

Regards
Erki

Good news from Finland

September 28, 2022

"Hi Imre,

Many thanks for the licenses! We had a good course and all participants got their plant models done even though they’ve never used Sumo before. Some were so advanced that they even started optimizing their processes 😊 I have used another process modeling programme on the same course before, but must say Sumo’s UI is so much more intuitive that I very much prefer that.

Majia Sihvonen, Ramboll, Finland."

Learning Sumo is wonderful

April 24, 2019

Joel Rife, Jacobs:

Hello Imre! I’m finally learning Sumo and it is WONDERFUL! It took me very little time to learn how to set up a run a model. I’ve already seen how the basic functionality is a huge improvement on other models and I’ve just scratched the surface. The transparency of the model is also a big improvement. The Influent Tool is a particularly cool, resulting in a highly “tailorable” influent fractionization in the model. I’ve noticed yield predictions to be a bit higher than other models; a good thing because I’ve found other models in many cases low compared to the data. I’m particularly excited that we finally have a secondary clarifier model that provides improved predictability of effluent TSS (no surprise there). In summary THANK YOU for this software and I look forward to many years of exploring all of its features and having fun with it! Joel

Another happy user

August 16, 2018 robert

Wim Audenaert, AM-Team:

"We have worked with different simulators before, but never got a new model working so fast as SUMO does. We talk about orders of magnitude difference in time spent."

Sumo fires up users

August 16, 2018

Dr. Joshua Boltz, after a successful model development project:

Thank you very much, Imre, for your exceptional support during the encoding and debugging process. Perhaps we now call you by your ancient name, Prometheus. For we have been given fire! Is it not fun to think, at least for this moment, we have a tool that no one else has created?" :-)

Sumo is enjoyable

September 2, 2013 michael

Michael Friedrich via bounce.secureserver.net
to Imre

Hey Imre I enjoy Sumo! I feel this is the future - congratulation! Please send the invoice!

Cheers
Michael

Sumo user’s first experience

September 2, 2013 robert

Robert and Imre:

I was able to run SUMO and in fact I did my first simulations. And, yes, within about an hour I am now able to do implement and run models on my own. This is excellent! So far, I very much like what I see! Best, Eberhard.

Imre Takacs <imre@dynamita.com>
to Eberhard, Róbert

Yaaay! Thanks Eberhard.

Sent from my HTC

Skype call, CH2MHill - Dynamita

September 2, 2013

[1/13/2013 7:56:45 PM] Bruce Johnson : boy imre... pretty slow... 9 seconds a day for a fully dynamic feed and 72 bioreactors split into 4 parallel trains. Can't you do any better than that? :O

[1/13/2013 8:00:21 PM] Imre Takacs : give me heart attacks!

[1/13/2013 8:00:35 PM] Bruce Johnson : LOL!!!!

[1/13/2013 8:00:49 PM] Bruce Johnson : very sweet imre

[1/13/2013 8:02:05 PM] Imre Takacs : great. I am going to relay this to the guys because they heard so much about speed from me, they are totally fed up

[1/13/2013 8:04:01 PM] Bruce Johnson : please do! this is absolutely incredible how quick it is.

The model has 105 state variables including DO modelling.

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