In the distilleries wastewater, the major portion is spent wash, is nearly 15 times the total alcohol production. distillery spent wash is the unwanted residual liquid waste generated during alcohol production and pollution caused by it is one of the most critical environmental issues. despite standards imposed on effluent quality, untreated or partially treated effluent very often finds access to watercourses. the distillery wastewater with its characteristic unpleasant odor poses a serious threat to the water quality in several regions. the spent wash is highly acidic in nature and has a variety of recalcitrant coloring compounds as melanoidin, phenolics and metal sulfides that are mainly responsible for the dark color of distillery effluent. the spent wash has low ph range as 4.5 to 8.5, high chemical oxygen demand and biological oxygen demand. in addition, to these contaminants, several heavy metals (cd, mn, fe, zn, ni, and pb) are also present. so, we developed a advance oxidation process of tio2-ag/ uv treatment for spent wash tratement. advanced oxidation processes (aops) with uv irradiation and photocatalyst titanium dioxide (tio2) are gaining growing acceptance as an effective wastewater treatment method. photocatalytic degradation technique with titanium dioxide is generally applied for treating wastewater containing organic contaminants due to its ability to achieve complete mineralization of the organic contaminants under mild conditions such as ambient temperature and ambient pressure. in this process, the absorption leads to a charge separation due to the promotion of an electron (e⁻) from the valence band of the semiconductor catalyst to the conduction band and generating a hole (h+) in the valence band. the recombination of the electron and the hole need to be prevented so as to enhance photocatalytic reaction must be favored. this was been achieved by doping silver metal in tio2 and producr tio2-ag nanoparticles. the photogenerated electrons could reduce the pollutant in wastewater. recently, there are examples of pollutants degraded by tio2 such as the dye are degrade by photochemically which are reactive violet 5, blue 9, red 51& yellow 23, methyl orange, methylene blue, rhodamine b etc. some pesticide also degrades by nanoparticles organophosphate & phosphonoglycine, azimsulfuron, swep residues other pollutants include pharmaceuticals and drugs which include benzylparaben oxolinic acid ciprofloxacin, ofloxacin, lamivudine etc. the process developed here has multidimensional application such as high degradation in short time, recycling of tio2-ag nanoparticles for repetitive use, and no sludge generation. so, this research utilizes less space, resources, and less manpower. nowadays, water sources are depleting and there are always needed of water in industry such as distillery. we found that in some distilleries are close during summer due to water scarcity. so, using this process, we not only treat the waste water but also utilize the treated water again for various purposes in industry.