[ Installations in the nature of solar energy receivers for drying sewage sludge, of urban and industrial origin, in particular through solar heating, for agricultural purposes, energy purposes, incineration and disposal of said sludge ]

Construction, installation and repair of installations for drying sludge, processing and producing replacement fuels, compost, fertilizers, and growing media, through extended heat-drying, in particular solar

Waste water treatment services in the nature of adjustment of physical and physico-chemical parameters of treatment plant sludges through biological aerobic or anaerobic fermentation, dehydration, single and multi-stage digestion, polymer and organic and mineral chemical product aggregates; waste water treatment services in the nature of transformation of treatment plant sludges with production of replacement fuels, compost, fertilizers, growing media; waste water treatment services for processing treatment plant sludges and production of replacement fuels, compost, fertilizers and growing media

Engineers services, namely, surveying, professional engineering consulting and drawing up of plans for installations for processing sludge for treatment plants, composting of plant organic matter and animal organic matter, of household, agricultural, municipal or industrial origin; engineers services, namely, surveying, professional engineering consulting and drawing up of plans for optimization or renovation of installations for drying sludge and producing replacement fuels, compost, fertilizers and growing media, resulting from treatment plant processing of solid or liquid waste, urban and industrial waste water, agricultural and horticultural green waste; drawing up of expert technical opinions in the nature of technical audits, studies and remarks for chemical, physico-chemical and biological test results; soil tests