Tannery and Leather Wastewater Foam Control BWF160 Silicone Defoamer for Tannery and Leather Wastewater Treatment BWF160 is a flowable, nonionic silicone antifoam emulsion developed for rapid foam control in tannery and leather wastewater treatment systems. Product ModelBWF160 Ionic CharacterNonionic pH6-8 Reference Dosage50-300 ppm Application Overview Surfactants, fats, proteins and sulfide-related treatment steps may generate foam during equalization, oxidation and