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Our local presence

We operate in more than 15 countries, close to the needs of our customers.

+120

locations worldwide

50

industrial sites in France

Industrial water treatment

Design and construction of industrial water treatment facilities

Inside a STEI industrial water treatment unit at a metallurgical plant in northern France. Séché Environnement. Photo : Laurine Paumard
The essential

Process expertise, end-to-end project management and implementation by our teams Tailored solutions, turnkey solutions, variety of technological solutions Regulatory compliance and Quality, Safety, Health and Environment (QSHE) standards Circular economy and ReUse: recovery of treated wastewater and sludge

benefit from a professional's expertise

Overseeing the construction of treatment facilities from A to Z

Séché Traitement des Eaux Industrielles (STEI) is the only point of contact you need to design, build, renovate and commission your facilities.
3D view of an industrial effluent treatment plant.
3D view of an industrial effluent treatment plant. © Séché Environnement.

Our teams support you in managing your water cycle. They will work with you to design a solution tailored to suit your needs, whether that is building process water production facilities for your manufacturing processes and utilities or effluent and sludge treatment facilities.

A comprehensive range of complementary technical solutions

Our highly competent engineers and technicians are proficient in the processes and technologies that span the entire water cycle:

  • Water purification (filtration, softening, ultra filtration, reverse osmosis, demineralization…)
  • Physicochemical processes (coagulation, flocculation, redox, neutralization, oil separation…)
  • Biological treatment (aerobic, anaerobic)
  • Liquid-solid separation (sedimentation, lamellar sedimentation, floatation, filtration…)
  • Membrane treatments
  • Polishing (adsorption using activated carbon, filtration, disinfection…)
  • Evapo-concentration
  • Dehydration of sludge (centrifugation, filtration using mechanical supports…)

Recycling and reusing treated wastewater

Process water is an essential component in manufacturing and transformation processes. By reusing wastewater, you reduce:

  • your environmental footprint and help preserve a precious resource at a time when the climate is warming and conflicting demands are on the rise
  • industrial risks related to your water supply
  • operating expenses by minimizing consumption

We support you all throughout your project by auditing your existing facilities, drawing up a reuse plan, conducting feasibility studies, building or commissioning facilities or providing maintenance of technical assistance.

Clients from across the entire economy, including the agrifood, chemical, petrochemical, metallurgy, transportation, electronics and defense industries, place their trust in us.

Our Group has been providing environmental services for many decades. We have developed a clear understanding of the main constraints as all our own facilities are listed under French environment protection regulations (ICPE) and sometimes Seveso. Managing safety and hazards form an integral part of our work, as does preserving natural environments and creating circular economy loops.

Stages of a design/build project

We provide end-to-end engineering for facilities of all sizes to treat or produce all types of water.

1. Understanding your priorities

Our specialized business development team, who are highly experienced in water treatment, assess your needs.

Our specialized business development team, who are highly experienced in water treatment, assess your needs.

2. Defining and choosing the treatment channel

Our specialist engineers support you to choose the most effective treatment processes. We conduct analysis and trials in our laboratories, with support from our R&D team.

Our specialist engineers support you to choose the most effective treatment processes. We conduct analysis and trials in our laboratories, with support from our R&D team.

3. Conducting project, detail and engineering studies

Our engineers and projectors carry out project studies (dimensions, plans, budget…), then detail and engineering studies (building plans, PFD, PID, 3D design…), while working closely with our procurement team to plan and source supplies.

Our engineers and projectors carry out project studies (dimensions, plans, budget…), then detail and engineering studies (building plans, PFD, PID, 3D design…), while working closely with our procurement team to plan and source supplies.

4. Building and commissioning

Our teams of project managers, site supervisors and commissioning engineers coordinate and oversee the work to build the treatment facility. They adapt to take account of the specific nature of your facility, constantly maintaining regulatory compliance, commission the facility and train your teams.

Our teams of project managers, site supervisors and commissioning engineers coordinate and oversee the work to build the treatment facility. They adapt to take account of the specific nature of your facility, constantly maintaining regulatory compliance, commission the facility and train your teams.

Our industrial water treatment experts at your service

Contact the expert nearest to you
Delphine de Gea © Séché Environnement

Northern France, Greater Paris region

Delphine De Gea - Business Development Director

Eastern France

Matthieu GIRARD - Business Development Director

Southern France

Franck Degrutère - Business Development Director

Western France

Jérôme Martin - Business Development Director

Key figures

PEOPLE
350
highly qualified employees focused on treating industrial water
TRUST
>180
TEI contracts in France

In pictures

This effluent treatment facility is fully integrated within the building. It was designed and built by STEI for a metallurgy plant in northern France.
Compact, space-saving design of an industrial effluent treatment unit. Séché Environnement. Photo : Laurine Paumard.

Compact design able to adapt to space constraints
Finishing treatment of industrial effluent using a sand filter. Séché Environnement. Photo : Laurine Paumard.

Finishing touches to an industrial effluent treatment facility using sand filtration

Reasons to place your trust in us

Renowned technical expertise

Séché Environnement provides tailored solutions that integrate a vast range of techniques. We operate and maintain process water production facilities, cooling loops and boiler water. We also treat all types of simple and complex liquid effluent (including hard COD, oils and hydrocarbons, organic pollutants, metals and micro-pollutants). We are renowned for our expertise in safely treating hazardous substances (H2risk management, ATEXCMR…).

Séché Environnement provides tailored solutions that integrate a vast range of techniques. We operate and maintain process water production facilities, cooling loops and boiler water. We also treat all types of simple and complex liquid effluent (including hard COD, oils and hydrocarbons, organic pollutants, metals and micro-pollutants). We are renowned for our expertise in safely treating hazardous substances (H2risk management, ATEXCMR…).

Optimization of costs and environmental performance

Our specialist teams are here to help you optimize your facilities and cut your operating costs. The studies team and its laboratory focus on developing the most effective solutions. We provide our clients with the most cutting-edge technology when working on construction or concession projects.

Our specialist teams are here to help you optimize your facilities and cut your operating costs. The studies team and its laboratory focus on developing the most effective solutions. We provide our clients with the most cutting-edge technology when working on construction or concession projects.

Solutions that facilitate the environmental and energy transition

It falls within your Corporate Social Responsibility (CSR) to reduce your environmental and water footprint. By controlling discharge, recycling and reusing water, we help you comply with regulatory requirements and respond to growing concerns about the availability of water. As specialists in the circular economy, we develop solutions to reduce the environmental impact and carbon footprint of your projects, and thereby help combat climate change.

It falls within your Corporate Social Responsibility (CSR) to reduce your environmental and water footprint. By controlling discharge, recycling and reusing water, we help you comply with regulatory requirements and respond to growing concerns about the availability of water. As specialists in the circular economy, we develop solutions to reduce the environmental impact and carbon footprint of your projects, and thereby help combat climate change.

Committed to protecting biodiversity

Since the Group was first established, it has placed great importance on protecting and preserving the biodiversity on and around our sites. We monitor natural habitats, optimize public health and safety, and protect the environment to support biodiversity. The Group takes action on the ground at all its sites and those of its clients wishing to take advantage of this expertise.

Since the Group was first established, it has placed great importance on protecting and preserving the biodiversity on and around our sites. We monitor natural habitats, optimize public health and safety, and protect the environment to support biodiversity. The Group takes action on the ground at all its sites and those of its clients wishing to take advantage of this expertise.

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