Process for treatment of manure, comprising following steps: solid-liquid physical separation of a liquid effluent containing manure, to generate a solid and a liquid fraction; physical-chemical separation of the liquid fraction obtained in step, to obtain a solid and a liquid fraction, wherein said physical-chemical separation comprises a flocculation and coagulation process whereby the particles present in the liquid fraction of step agglomerate and then precipitate, to obtain a solid and a liquid fraction; electrocoagulation-flotation of the liquid fraction obtained in step, to obtain a solid and a liquid fraction; and pelletizing the solids fractions obtained in steps and and, characterized in that: step comprises a flocculation process with the inclusion of cationic flocculant additives of cationicity between 1% and 30%, and molecular weight of 10 10 6 Da to 1000 10 6 Da, obtaining a solid and liquid fraction; and a coagulation step which is operated with a dissolved air flotation system including a turbine diffuser submerged in the liquid to be treated that suck the air micro bubbles that were distributed through the liquid mass; step is performed in a treatment tank of flocculation-coagulation; the liquid obtained in step is re-routed to step; and step of pelletizing the solid fractions obtained in steps, and is carried out in the presence of lignocellulosic materials, wherein said solid fraction of step comprises sludge accumulated on the surface that is removed by a collector and brought to a bandpass filter or similar system to proceed to pressing, to be discharged with the same use as the solid fractions obtained in the previous step. solid-liquid physical separation of a liquid effluent containing manure, to generate a solid and a liquid fraction; physical-chemical separation of the liquid fraction obtained in step, to obtain a solid and a liquid fraction, wherein said physical-chemical separation comprises a flocculation and coagulation process whereby the particles present in the liquid fraction of step agglomerate and then precipitate, to obtain a solid and a liquid fraction; electrocoagulation-flotation of the liquid fraction obtained in step, to obtain a solid and a liquid fraction; and pelletizing the solids fractions obtained in steps and and, characterized in that: step comprises a flocculation process with the inclusion of cationic flocculant additives of cationicity between 1% and 30%, and molecular weight of 10 10 6 Da to 1000 10 6 Da, obtaining a solid and liquid fraction; and a coagulation step which is operated with a dissolved air flotation system including a turbine diffuser submerged in the liquid to be treated that suck the air micro bubbles that were distributed through the liquid mass; step is performed in a treatment tank of flocculation-coagulation; the liquid obtained in step is re-routed to step; and step of pelletizing the solid fractions obtained in steps, and is carried out in the presence of lignocellulosic materials, wherein said solid fraction of step comprises sludge accumulated on the surface that is removed by a collector and brought to a bandpass filter or similar system to proceed to pressing, to be discharged with the same use as the solid fractions obtained in the previous step. step comprises a flocculation process with the inclusion of cationic flocculant additives of cationicity between 1% and 30%, and molecular weight of 10 10 6 Da to 1000 10 6 Da, obtaining a solid and liquid fraction; and a coagulation step which is operated with a dissolved air flotation system including a turbine diffuser submerged in the liquid to be treated that suck the air micro bubbles that were distributed through the liquid mass; a flocculation process with the inclusion of cationic flocculant additives of cationicity between 1% and 30%, and molecular weight of 10 10 6 Da to 1000 10 6 Da, obtaining a solid and liquid fraction; and a coagulation step which is operated with a dissolved air flotation system including a turbine diffuser submerged in the liquid to be treated that suck the air micro bubbles that were distributed through the liquid mass; step is performed in a treatment tank of flocculation-coagulation; the liquid obtained in step is re-routed to step; and step of pelletizing the solid fractions obtained in steps, and is carried out in the presence of lignocellulosic materials, wherein said solid fraction of step comprises sludge accumulated on the surface that is removed by a collector and brought to a bandpass filter or similar system to proceed to pressing, to be discharged with the same use as the solid fractions obtained in the previous step.