Mobile or fixed installations and equipment enabling the chemical, biological, physical or physico-chemical degradation (or lysis) of bacteria used in the biological treatment of urban or industrial waste waters made up of the liquid and semi-liquid sludge from purification stations; mobile or fixed installations and apparatus for preparing, mixing, dosing and distributing oxidizing chemicals, surface-active products or enzymes intended for the degradation of cell walls; apparatus and installations for purifying and settling water comprising equipment enabling a reduction in biological sludge production via methods that use chemical oxidizing reagents, surface-active agents, enzymes, radiation, electric fields, electron beams, mechanical comminution methods or biological methods of enzymatic hydrolysis or digestion, as well as a combination of two or several of these methods.

Treatment services for sludge from purification stations; adjusting the physical and physico-chemical parameters of sludge from purification stations via aerobic or anaerobic biological degradation, dehydration or mono and multiphase digestion; transformation of sludge from purification stations with the production of substitute fuels, compost, fertilizers and growing mediums.

Studies and services (technical) concerning the treatment of urban or industrial waste water, particularly in the field of techniques to reduce the production of sludge from installations to purify municipal and industrial waste water; technical auditing, consulting and engineering relating to procedures for treating urban waste water and treating sludge prior to land disposal, recycling, drying or incineration.