Process for purification of sanitary waters

摘要: A purification process for removal of suspended solids, carbonaceous material, nitrogenous phosphorus, refractory organics, bacteria and viruses comprises combining carrying out the various biochemical chemical reactions separation solids in a single sludge system simplified sequence suitable use reaction tank. The biooxidation, nitrification, denitrification precipitation processes are carried presence mixed microbial population entrapped into fluidized nonbiodegradable with portion circulating through three zones having varying concentration disolved oxygen to maintain environmental conditions support growth simultaneously operating required carry involved reactions. entrap active microorganisms, colloidal matter present incoming waste water and/or generated during water, improve settling properties resulting enhance from purified water. this is significantly higher than that achieved by prior art better performance, more efficient pollutants reduced treatment costs. followed oxidation provides remaining impurities killing viruses.