Who are we?

A more profound look on how PMT became the leading supplier of biological packaged wastewater treatment plants

PMT is an expert and a leading producer of packaged biological treatment solutions, including biodiscs, rotating and containerized MBBR solutions.

The compact biological wastewater treatment plants by PMT have been exported worldwide since 1998. Thanks to their good landscape integration, to their odorless biomass and their simplicity of exploitation, PMT's technologies have been recognized as the reference for the small and medium sized waste water plants.

History of the biodiscs and birth of PMT

Biodiscs were introduced in Europe at the end of 1960’s and have quickly seduced the small & medium market by their simplicity, rusticity, robustness, the reliability of their fixed biomass culture, and the cost efficiency of their operation. 

However, after a few years, it appeared that this first generation of equipment installed was mechanically not strong enough because of conception shortcomings (disks in expanded polystyrene which were too frail, porous discs which were subject to unbalanced biomass growth, tear and wear on the chains and drive rings, uprooting of gear motors seals, wear of overloaded and greaseless bearings, rupture of the welded flanges on the axis and tubes, hollow shafts buckling leading to problems in the biodiscs positioning, corrosion). Because of these structural defects, the technology almost disappeared in the 1980’s.

After nearly 20 years, the technology has reprooved its potential on a new aspect,  with mechnical improvements. PMT is one of the key players and has the leading expertise on this transformation,.

PMT continues to provide robust, reliable and long-lasting equipments for more than 25 years, with a presence of > 1500 references.

PMT was founded in 1998 in Savoie, France as a family entreprise. The success of its treatment units is related to its proper design.

PMT biodisc, or as known as Ecodisk, is designed in tough rigid plastic polypropylene discs which are coupled to a stainless steel structure and equipped with a full stainless steel shaft.

Accumulating the successful references, PMT continues to grow. In 2008, the company was acquired by the Veolia group. By keeping its original structure and adding its international network, the Veolia group has allowed PMT to address even more distant markets.

Research & Development

PMT developed in 2012 another standard product to comply with more stringent discharge standards : the Ecodisk Filter™. It is the unique combination of an Ecodisk™ with a Hydrotech Drum Filter.

This innovation was followed in 2015 by the launch of the Ecodisk Denit, an anoxic standard packeged unit designed for the removal of total nitrogen.

In 2017 the Ecodisk Solar was succesfully tested and added to PMT catalog. With this option, the end-user has the opportunity to operate his waswter treatment plant semi or fully autonomuosly.


Portfolio Enlargement

Since november 2019, with the strong contribution of Anoxkaldnes, PMT commercializes the MBBR Pack, a containerized moving bed bioreactor solution to complement its range of applications in the medium-large municipal and industrial sectors.

After the valuable feedback coming from PMT partners, there will  be some minor design modifications on MBBR Pack and PMT will start to fabricate & commercialize the MBBR-Pack New Generation from the very beginning of 2023.

2020 was the year the Ecosim is released.

Ecosim is a rotating MBBR technology, with high compactness and capacity adaptability. PMT is currently conducting the large-scale pilot studies, on a local wastewtaer treatment plant.

Aimed target is to finalize the industrial pilot studies, and introduce the product to the external market at the very early of 2023.


These new products will ensure PMT keeps its leadership in the distribution of high performance packaged biological units on the market.