Study On The Technology Of Ammonia Removal With Reconstructing Anaerobic Microbes And Its Influential Factors In Aeration Basin

China's water pollution comes mainly from two aspects, one excessive discharge of industrial wastewater, and second, because serious of urban sewage treatment facilities and a serious lack of focus treatment, a large number of untreated sewage directly into water bodies caused environmental pollution. Industrial wastewater in recent years has been declined, but the municipal sewage increase. It accounts for 51% of water pollution. The increasing nitrogen cause pollution problems such as eutrophication in particular. The technology of wastewater treatment need to improve, although the traditional theory of biological nitrogen removal is perfect, process is maturity. Due to the actual engineering application disadvantage, the new technology of nitrogen removal is imperative. The theory and technology of nitrogen removal with aerobic denitrification has become one of the focus today.This article concerned in nitrogen removal with the single stage of SBR system-aerobic microbe reactor. The may have been affected by different carbon source, C/N ratio, temperature, pH, and so on the system nitrogen removal. Glucose and ethanol as carbon sources NH4+-N, TN removal rates reached 91.2% and 93.5%.The removal rate of ammonia nitrogen increased with the organic load is not stable. But on the whole, the nitrification rate decreased with the increase of COD load .When the pH lower than 6.0 or higher than 8.0, the microbial system of reactor may change. The removal efficiency changed with the different C/N ratio, sodium acetate, ethanol and methanol of the C/N ratio of 10.0, the TN removal rate gone up to 74%,88%, 61%. The glucose of the C/N ratio is 11, total nitrogen removal rate was 91%, but with the C/N ratio increases, the total nitrogen removal rate was declined.Experiment further studied the principle of aerobic nitrogen removal process under the aerobic conditions of micro-organisms. It took into account the metabolic conversion of nitrogen, ammonia nitrogen transformation of different systems. The intermediate of NO3--N, NO2--N significantly different, but the NO2--N were lower than 5mg/L, the concentration of NO3--N slightly higher than the NO3--N, but total nitrate and nitrite levels were low. It indicated that the product of nitrification was used by denitrification bacteria. The metabolic rate of organic matter and nitrogen were inconsistent at different stages. COD and had a clear downward trend in the aerobic phase, while ammonia nitrogen and COD in the anoxic stage had no obvious changes in the micro-organisms under aerobic conditions. The effluent generated NO2--N and NO3--N that were lower than 3mg/L, while the absence of nitrogen the reactor was 30mg/L or more. It suggested that nitrification and denitrification phenomenon occurred at the same time in the aerobic stage.The effect of removal nitrogen was the best that glucose and ethanol as the carbon source in the culture of activated sludge of SBR reactor, at the same time micro-organisms in activated sludge was the highest that TN content were 36.94mg/g and 44.29mg/g. Microbial metabolites was EPS in wastewater, starch cultured sludge produced EPS more than glucose, acetic sodium produced. Different quantity of protein and sugar were in the EPS with different media. Microbial metabolites of the sludge with a variety of different bacteria closely related to the complex physiological activities.