(C−) × (E+) = NxSTEP*

An equation beyond

* (Negative Carbon) x (Positive Energy)

Wastewater treatment:

a positive approach

strengthened by our convictions, and after 5 years of research and development, NXO engineering designed and produced NxSTEP, a new generation 100EH Carbon Negative and Positive Energy treatment plant prototype, putting algae at the heart of wastewater treatment .

NxSTEP

The weight of wastewater treatment

! Current technologies are structurally very energy intensive …

! … increasing the price of water for communities.

! CO2, N2O and CH4 emissions during the purification process are equivalent to 1% of overall GHG emissions in France.

NXO engineering a committed company

! The scarcity of resources leads to two necessities, namely sobriety and recycling.

! Tackling climate change is everyone’s business.

! We are not inventing anything that nature has not already designed.

A POSITIVE ENERGY
WASTEWATER PLANT BY NxSTEP

 

Unité de traitement des eaux usées

YOUR WASTEWATER IS A RESOURCE

Traitement des eaux usées NxSTEP

A TOTEM:
ENERGY SOBRIETY

he average energy consumption of French stations in 2018 (for the activated sludge sector
or 35% of the French fleet) is established at 0.8 kWh / m3 of treated water. The NxSTEP process is satisfied with 0.12kwh / m3.

Traitement des eaux usées consommation

AN AMBITION: ENERGY AUTONOMY

The operation of a NxSTEP station is autonomous thanks to the production of renewable energies (methane) from wastewater. The sludge generates an energy surplus that can be marketed or used in cogeneration.

WASTEWATER VALORIZATION WITH
NxSTEP

NxSTEP calls for a profound paradigm shift.
It is no longer a question of simply treating wastewater but to benefit from its resources.
These productions generate income and reduce the processing costs of secondary products compared to conventional treatment (refusal of screening, sludge, digestates, etc.).

Produit de valorisation des eaux usées

NxSTEP, NEGATIVE CARBON FOOTPRINT PURIFICATION STATION

CO2 consumption (photosynthesis ) = 26 tonnes of CO2 remedied / year / 100EH
+
Energy efficiency =
255 tons of CO2 avoided / year / 100EH
+
No release of N20 (nitrous oxide)=
NEGATIVE GHG IMPACT

 

A ZERO CHEMICAL AND ZERO WASTE PURIFICATION STATION

NXO engineering has developed a biocoagulant based on cacti slime that eliminates metal salts.

Finally, like vegetable waste, algal digestates are valued as biofertilizers.

NxSTEP: TREATMENT WASTE VALORIZATION

NxSTEP calls for a profound paradigm shift.
It is no longer a question of simply treating wastewater but of developing its resources.
These productions generate income and reduce the processing costs of secondary products from conventional treatment (refusal of screening, sludge, digestates, etc.).

PROGRAMME
VOLTA

NxSTEP,
A STRONG PARTNERSHIP POLICY

 

NxSTEP has enjoyed wide support from the scientific community nationally and locally. The originality of the approach arouses a wave of interest in the scientific community inherent both in the choice of the depollution matrix (microalgae) and in the destination of the technology (Sanitation).

ONE STEP BEYOND

n 2021, NXO engineering technology was named the winner of the « I-NOV » innovation competition sponsored by ADEME and BPI as part of the Future Investments Projects.

Program Objectives: CHANGE SCALE

The VOLTA project (Valorization of wastewater via light energy and micro-algual technologies) aims to develop the first pre-industrial demonstrator 500 pe of wastewater treatment plant with positive energy, with negative carbon footprint and zero products. -chemicals.

Start of work: First trimeter of 2022

End date: 2023

In the upcoming world, signage will not be enough to meet environmental challenges. NxSTEP aims to tackle all the themes of energy and environmental transition to offer a structuring and integrated approach to sanitation.

In the light of this new century and the related challenges, sanitation should no longer constitute a financial burden for the community but an opportunity for resources. Microalgae contribute to this change in status and image. By offering a virtuous and economically innovative sanitation model, this new model augurs new hopes.