Process overview

The beauty of process design lies in the simplicity. Our core tehnology is AxoPur® whereby dirty waters are separated into clean water and a small amount of solid floc. The driving force is electricity. The process leaves no loads of hard-to-handle sludge, no concentrate flow to take care of, but water that is often cleaner than after using other technologies. Even emulsified oils, fats and grease are removed with extreme efficiency – just like any kind of living matter. And it all takes place in just a short moment.


Electricity is used to liberate metal ion coagulants from a sacrificing electrode. Both the electric field and the metal ions assist in the cleaning process. A small amount of hydrogen gas is also released and benefitted from when the contaminants are lifted to the surface in a  flotation process and then separated from the water.


The consumables in the process thus are (by decreasing order of importance):

  • Sacrificing electrodes
  • (Green) electricity
  • Flocculating aids
  • Acid/Base for pH adjustment


The contaminants are separated from the water not in the form of a concentrate flow or a bulky sludge – but in the form of a minimal amount of a floc. This floc has a particular feature in its ability to largely self-drain and is suitable for mechanical pressing in order to reach a high solids content.


We advocate the use of green electricity to power our technologies for the sake of a sustainable future.


The beauty of our process lies in its simplicity!

“Our process is as simple as it is brilliant”

Dr. Martin Ragnar


AxoPur® and AxoPlus™

AxoPur is our core product based on the principles for electrocoagulation. Using AxoPur most contaminants could be removed. However, for some special cases additional technologies are also required. We gather those under the tradename AxoPlus.



An AxoPur unit consists of four elements: A power source, a reactor module, flotation (or in a few cases sedimentation) and a control system. The set-up is modular meaning that the reactors are of one, standardised type fitting into any kind of AxoPur unit – the difference only being the numbers. The modular design of the model program has been designed in order to ensure both cost-effectiveness and flexibility for our customers. The options for you as a customer in selecting the appropriate system includes:


  • Control system: We offer three different solutions – full automation using PLC ready for integration in a supervisory control system, semi automation using wire-less control from a PC unit and manual control. Full automation is suitable for units used in continuous operation in a process industry. Semi automation is suitable for units used regularly, e.g. in a plant with daytime work mainly. Manual control is suitable for irregular use when smaller amounts of wastewater are treated batch-wise.

  • Reactor module: The reactor module decides the maximum flow through the unit. This is governed both by the amount of wastewater as such, but also by the choice of operation (as discussed in relation to the control system)

AxoPur units are referred to by model names, using the initial letter U followed by a number denoting the flow rate, an x and a number denoting the flotation unit and finishing with a letter defining the control system (F=full automat, S=semi automation, M=manual), e.g. AxoPur® U2x2M.

Currently the practical upper limit of our offerings ends at flow rates of around 250 m³/h. Downwards there is no clear limit as small flows could be handled with a manually controlled unit adapted to needs.


AxoPur 2.0

After a comprehensive development work, Axolot launched in the beginning of 2022 the next generation’s technology, AxoPur 2.0. The upgrade means that Axolot can offer systems handling flows up to 250 m3/h, where the equipment used to be limited to a maximum of 50 m3/h. By adding additional modules, systems handling even bigger flows can also be delivered. At the same time, the new AxoPur generation leads to drastically reduced consumption of energy and other supplies, which means that Axolot can offer even more cost efficient and flexible solutions for environmental-friendly water purification. With the launch of AxoPur 2.0, the possibility opens up to penetrate new market segments like municipal activities and process industries, with bigger flows of sewer and process water. At the same time, Axolot thereby becomes even more competitive within the market segments where the company is already active.

Business model

We are a system provider solving your problems by means of:

  • AxoPur®  – our core proprietary purification technology
  • AxoPlus™ – auxilliary purification technologies for certain specific needs
  • KnowHow – not only about our technology, but in-depth understanding of the real life of a process industry

Doing business with us usually precedes through the following steps:

  • Meeting to understand your needs and to present our capabilities
  • Your expression of interest and signing of a confidentiality agreement
  • Testing of your water to design a technical solution
  • Design trial in pilot scale at your site
  • Signing of commercial contract
  • Installation
  • Service relation

Model Program

Axolot Solutions Model program

Following many years of research and development, construction and trials, Axolot has now launched a model program for its core water purification equipment AxoPur®. The model program is modular, and this design ensures a cost effective manufacture of the product portfolio. The equipment in the entire flowrate interval makes use of one reactor construction, which is multiplied according to the needs. To describe it in a simplified way, an AxoPur system is composed of a reactor cabinet with reactors, a flotation unit, a power source and a control system. The control system is core in the AxoPur system, and Axolot can now offer three different levels of automation: Fully automated systems to be integrated in a supervisory control system in a bigger process industry; semi-automated systems suitable for industries with regular water purification needs; and manual systems more suited for irregular purification needs with manual supervision.



Every water is uniques in its composition and thereby in its exact behaviour in a process. Accordingly, testing of your water is an integral part of our business with you. We have test equipment both in bench-scale (flow rate capacity 50 l/h) and in pilot scale (flow rate capacity 5002000 l/h), both of which are portable/mobile. For testing of waters believed to be stable over time testing in our facilities in Landvetter/Helsinki is adviced, whereas waters e.g. with high biological activity usually should be tested on-site. Bench-scale testing provides a fair answer to the applicabilaty of our technology to your water. Pilot-scale testing also provides data necessary for system design in your case. We charge cost-coverage for testing – costs that could be credited upon a purchase.

Minipilot 2 nov 2019


Our core technology, AxoPur®, is based on the principles for electrocoagulation – an invention of the early 20th century that required a century to mature and become relevant. It is easy to demonstrate the basic features of electrocoagulation in the laboratory. The challenge for its commercial utilisation instead lies in factors like making the process continuous, providing a robust design and scaling up the process.


Metals and oil
Quite often (transition/heavy) metal ions end up in a flow where also oil/fat/grease prevails. This could happen in many industries, e.g. in a coating industry (coating of paper/board or coating/plating of metals), metal working industry, in a car/bus/train wash, as storm-water at harbours or industrieal sites or in a tannery. The combination of metals and oil is an easy task for us to remove, whereas few competing technologies prevail.




Contaminants in salt water
Sometimes there is a desire to remove everything but salt from a salt water flow. This could typically be the case in the farming of salt-water fish, but also in the case of the purification of dissolved ash from a furnace or in the cleaning of an electrolyte. We could selectively remove most impurities from a salt water, leaving the salt in the flow – something few other technologies easily can do.




Hazardous wastewaters
Hazardous wastewaters are often made up of a large number of more or less well-known contaminants. In order to clean this safely, technologies with a particularly broad spectrum cleaning are particularly suitable. There are companies specializing in the safe handling of hazardous wastewaters, but such waters also occur e.g. as leachate from dumps. Our technology is one of few suited for this advanced total cleaning.




Generally speaking our technology easily and efficiently removes suspended solids, transition metal ions, emulsified/disperesed oil/fat/grease, phosphorus and most dissolved substances of some size. This opens the door to many more applications than the above, e.g. within food processing (e.g. slaughterhouses – usually phosphorus, fat, protein and blood), chemical industry, oil processing, (bio-)fuel manufacturing/handling, algae harvesting and processing, fertilizer upgrading (selective removal of cadmium), phosphorus recycling and many more.




Emerging pollutants
Emerging pollutants is a notion to cover contaminants commonly not measured in wastewater flows but at the same time being of an increasing concern. Here we find substances like PFAS, microplastics, medical residues and others. Our technology proves capable of removing many of the contaminants found in this group as well, although thorough testing is always necessary required here and analytical methods to evaluate the removal is sometimes a challenge.