Clearing sludge from a retention basin - CTP environnement group

Our client needs to drain the sludge from the retention basin on its production site every year, to ensure its plant runs smoothly, while complying with the standards for discharges into the natural environment.

The basin contained 850 m³ (1 112 yd³) of mineral sludge, which was too harsh to use a conventional method, such as a centrifuge or a mobile press filter.

CTP environnement suggested pumping and dewatering this sludge using a more suitable technique of dewatering with a geotextile membrane. The very hard sludge at the bottom of the tank required the use of an appropriate power shovel.

With several geotextile membranes, measuring 120 m³(157 yd³) arranged over a specific and specially created area, the work was carried out successfully in the summer.

In the end, all the sludge was removed from the tank and the hard sludge was stored alongside the dedicated area for the dewatering membranes.

News

16th April 2025

Victory at the V.I.E Grand Prix Americas 2025

To accelerate its international growth, CTP environnement group has embraced the V.I.E program, led by Business France and backed by the French government. For several years, qualified young talents have been strengthening our teams in subsidiaries located in Singapore, Canada, the USA, and more recently, the United Kingdom.

In our American subsidiary based in Houston, Neyl stood out brilliantly by winning first place at the V.I.E Grand Prix Americas 2025, an award that recognized 4 winners out of 97 candidates. His original and impactful video—highlighting France as THE go-to destination for innovation and investment—made all the difference.

News

31st March 2025

INTERSOL 2025

We took part for the first time in the 24th edition of INTERSOL, the International Congress and Exhibition on Soils, Sediments and Water.

Our teams came to meet the leading players in the field of polluted sites and soils (PSS), to compare their challenges and solutions, and to respond in the best possible way.

News

26th March 2025

CTP environnement joins the 2nd French "Accélérateur Nucléaire" programme

BPI France has been supporting our development for many years, even before the creation of our nuclear division in 2015.

10 years later, on the strength of our recent experience, which has been recognised by major players in the sector, we decided to join their Nuclear Acceleration Programme, launched in 2024.