NOVELTY - The system comprises an anaerobic digester (12), a membrane bioreactor (14), and a salt concentrator (16). An inlet of the anaerobic digester is connected to a source of vinasse, an effluent outlet from the anaerobic digester is connected to an inlet of the membrane bioreactor, and a permeate outlet from the membrane bioreactor is connected to an inlet of the salt concentrator. The salt concentrator comprises an electrodialysis unit, a reverse osmosis unit, and an electrodialysis unit followed by the reverse osmosis unit. The system further comprises a solid-liquid separation device (26).    USE - The system is useful for treating vinasse (claimed) that is useful for producing reusable water, fertilizer and biogas.    ADVANTAGE - The system treats the vinasse with less energy consumption, and provides highly qualified reusable water.    DETAILED DESCRIPTION - The system comprises an anaerobic digester (12), a membrane bioreactor (14), and a salt concentrator (16). An inlet of the anaerobic digester is connected to a source of vinasse, an effluent outlet from the anaerobic digester is connected to an inlet of the membrane bioreactor, and a permeate outlet from the membrane bioreactor is connected to an inlet of the salt concentrator. The salt concentrator comprises an electrodialysis unit, a reverse osmosis unit, and an electrodialysis unit followed by the reverse osmosis unit. The system further comprises a solid-liquid separation device (26) located between the effluent outlet of the anaerobic digester and the inlet of the membrane bioreactor, and a recycle loop located between from a waste activated sludge outlet of the membrane bioreactor to the anaerobic digester. The membrane bioreactor comprises an aeration tank and a continuously stirred tank reactor. An INDEPENDENT CLAIM is included for a process for treating vinasse.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of a vinasse treatment system.    Anaerobic digester (12)    Membrane bioreactor (14)    Salt concentrator (16)    Methane (20)    Solid-liquid separation device. (26)