The Study On Nitrogen Removal By Biomembrane In The Short-cut Nitrification And Anammox Process

The SHARON-ANAMMOX process is a new technology according with continuable development. It shows a new way for nitrogen removal to resolve problems in traditional nitrogen removal techniques. The studies on this process were as follows:1. The effects on growths of both bacteria by temperature and pH was studied and the results showed that best conditions for nitrisomonas were T (30℃) and pH (7.0～8.0). And also the growth of nitromonas and inhibition of nitrobacter could be carried out When DO was 0.5mg·L^-1.2. The growth of anammox bacteria was best when temperature was 35℃and pH was 7.0～8.0 in the screen and cultivation. The growth of anammox bacteria was three times of that before Heterotrophic bacteria were removed. So it can be concluded that Heterotrophic bacteria interfered in the proliferation of anammox bacteria.3. The SHARON oxygen limited reactor and ANAMMOX baffle reactor were started up successfully. The synthetical effects on nitrification by temperature, DO and pH were studied. And also the effects on anammox by temperature, pH and removal of Heterotrophic bacteria were carried on. The optimal process conditions were gained and total aim of degradation was fulfilled. More energy consume was reduced compared with other traditional process.4. The dynamical effects on SHARON-ANAMMOX by each factor were analyzed respectively and dynamical parameters were generated by non-linear fit. The main analysis was used to analyze the impacting degree on velocity by each factor and the sequence of SHARON process was temperature, DO, concentration of NH₄⁺ and concentration of NO₂^-; the sequence of ANAMMOX process was temperature, pH, concentration of NH₄⁺ and concentration of NO₂^-. The proximate mathematical models were founded.