SLG

Fixed and movable, apparatus, devices and installations used in a purification plant, namely, a main reactor, in the nature of industrial chemical reactors for treatment, purification, secondary treatment, disinfection, decontamination, decolloidation and pollution control of sludge; fixed and movable apparatus, devices and installations used in a purification plant, namely, a main reactor, in the nature of industrial chemical reactors and in a process for dewatering and reducing in volume the treated sludge

Building, commissioning, repair and maintenance of fixed and movable apparatus, devices and installations for treatment, purification, secondary treatment, pollution control of sludge; services of building, commissioning, repair and maintenance of fixed or movable apparatus, devices and installations for dewatering and pollution control of sludge

Treatment, purification, secondary treatment, disinfection, decontamination, decolloidation and pollution control of sludge; services of dewatering and pollution control of sludge

Engineering services, namely, designing, calculating and dimensioning of facilities used for treatment, purification, secondary treatment, disinfection, decontamination, decolloidation, and pollution control of sludge, dewatering sludge