A Study On Short-cut Nitrification-Anammox Process Treating The Effluent Of An UASB Reactor Fed By Landfill Leachate

A short-cut nitrification process (SN) and the anaerobic ammonium oxidation (ANAMMOX) process were started up with the synthetic ammonium-rich wastewater. After they both the two reactors reached stable running, the feasibility of the two processes treating the effluent of an UASB reactor fed by landfill leachate (raw wastewater) was studied. The results show that, when treating raw wastewater, the loading rate of SN-ANAMMOX process reached 1.0 kg/(m3.d), with the ammonium removal efficiency of 93%; "one-step" autotrophic nitrogen removal process was developed under the condition of limited oxygen, the ammonium loading rate reached 0.35kg/(m3.d), with the ammonium removal efficiency of 90%, and an dynamic kinetics equation was established describing the growth of ANAMMOX bacteria, according to the relationship between substrate degrading rate and growth rate, the concentration of SN bacteria, ANAMMOX bacteria and nitrification bacteria was obtained, and the mechanism of the bacteria. Furthermore, the process and mechanism of SN sludge granulation was studied.