Industrial effluent

A major UK player in the O&G asked CTP environment to perform specific work during a maintenance shutdown.

CTP environnement was asked to define and implement a solution for treating effluent generated by the partial demolition of a reactor building’s structure for subsequent renovation. The effluent in question was liquid sludge containing mineral matter (demolished concrete) and metal (descaled steel) at a concentration of 5 to 20 g/L.

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.

Our client, a major player in the refining industry, asked CTP environnement to clear out the final tank located close to their plant. The discharged effluent had created a build-up of sludge at the bottom of the tank of around 120 m³ (157 yd³) with 35 % dryness (estimate for an area of 200 m² /2153 ft²). After draining and treating the supernatant water, the sludge accumulated at the bottom of the tank needed to be cleared and dewatered.