TECHNOLOGY FOCUS - CHEMICAL ENGINEERING - Preferred Mixture: The mixture for the treatment of liquid waste such as domestic waste water or slops optionally comprises 2.5% of a cationic starch, 2.5% of a native starch and 95% water so as to starches and placed in a tank with water jacket and then heated to 70 degrees C to form the gel or rubber pre and then let cool to room temperature. The hydrated bentonite optionally comprises 19% bentonite and 81% of water which is allowed to stand for 10 minutes. Preferred Method: Alternatively, preparing the mixture for treating liquid waste optional, comprises: (1) applying starch 2.334 L of rubber mixing until total dispersion, if necessary previously dispersed in part of the water to be treated, during the churning; (2) adding in 23.2 L of the hydrated bentonite dispersion; (3) resting for 1 hour; (4) precipitating the sludge decant and the remaining liquid and stirring; (5) adding the mixture of native starch, cationic starch twice the amount indicated in the preparation of starch; (6) letting it stand for 1 hour; (7) decanting sediments, and remaining water; (8) adding 4 g of enzymes and microorganisms and reacted for 24-48 hours; (9) decanted sludge and water are available, where they meet all the sludge, which spray, were mixed 100 ml of diluted microorganisms in 5 L of water; (10) settling and draining for 72 hours, neutralized sludge and bacterial inactivity is verified, they will have to continue with the procedure; and (11) filtering the liquid by zeolites. Obtaining the mixture of optional vinasse treatment or wastewater comprises: (1) replacing the starch-gum preparation for this, a mixture is prepared from native starch and pre-gelatinized starch cationic, 200 g of each to 400 L of vinasse; (2) preparing deproteinization mixture in the same manner as outlined in the preparation of hydrated bentonite; (3) mixing the components of the two steps above before adding to the reaction tank stillage; (4) using 1 g of the solution per liter of vinasse; (5) mixing and stirring for 30 minutes; and (6) settling and filtering, is passed to settler or centrifuge, the vinasse clarified water is deposited in the tank bacteriological and enzymatic treatment, the resulting liquid microbiological treatment sedimenting sludge is mixed with those obtained from the first sedimentation and the liquid is filtered through zeolite.