NOVELTY - Ecotechnical installation comprises: at least a fermenter (3, 4), in which unpolluted solid and liquid organic biomass, organic waste, sewage and waste-water and mineral substances are suspended for an anaerobic fermentation process, preferably an anaerobic lactic acid fermentation; optionally at least a biological replacement filter (1) upstream to the fermenter; and/or at least one intensive composting (2) for disinfecting water and the destruction of germinable seeds at high temperatures; and/or at least one dry pit (5) for drying and neutralization of the fermented biomass.    USE - The ecotechnical installation or the method is useful: for producing cultivation substrates, soil adjuvants and/or organic fertilizers having properties of anthropogenic terra preta; and for utilizing unpolluted organic biomass, bio-waste, dirty water and sewage, mineral substances for generating current and/or heat.    ADVANTAGE - The device or the procedure provides an ecological and economical way of efficient utilization of unpolluted organic biomass, biowaste, dirty water and sewage, mineral substances for producing current and/or heat e.g. the liquid phase produced during the filtration is conducted over a soil filter, which on one hand serves as efficient crop production and on the other hand acts as a biofilter. The produced cultivation substrates improves plant growth and reduces failure rate during replanting.    DETAILED DESCRIPTION - Ecotechnical installation comprises: at least a fermenter (3, 4), in which unpolluted solid and liquid organic biomass, organic waste, sewage and waste-water and mineral substances are suspended for an anaerobic fermentation process, preferably an anaerobic lactic acid fermentation, so that in the fermenter, at least an inert carbon having large pore volume or a substitute of carbon e.g. lava, zeolite, bentonite, expanded clay and/or other porous material are included; optionally at least a biological replacement filter (1) upstream to the fermenter, where the basic structure of filter consists of organic biomass, mineral materials and/or inert carbon having large pore volume and the liquid organic biomass e.g. digested residues, muck, laitance, dirt and waste-water is passed over the filter; and/or at least one intensive composting (2) for disinfecting water and the destruction of germinable seeds at high temperatures; and/or at least one dry pit (5) for drying and neutralization of the fermented biomass. INDEPENDENT CLAIMS are included for:    (1) producing cultivation substrates, soil adjuvants or organic fertilizers having properties of anthropogenic terra preta, comprising fermentation step, filtering step, composting step and drying and neutralization step, as carried out above; and    (2) a circulation installation allowing a sustainable material flow management for utilizing e.g. unpolluted organic biomass, bio-waste and mineral substances for generating current and heat and producing industrial water and cultivation substrates, soil adjuvants or organic fertilizers, comprising a biogas installation, composting installation, processing installation for organic biomass and/or an energy crop plantation, where the circulation installation further comprises the ecotechnical installation.    DESCRIPTION OF DRAWING(S) - The figure shows a lateral view of the ecotechnical installation.    Replacement filter (1)    Intensive composting (2)    Fermenter (3, 4)    Dry pit (5)    Distribution system (24)