Environmental Behavior Of Ammonia And Aniline In Riverbank Filtration System

In this paper, we simulated riverbank filtration system, and made room dynamic experiments, reviewed the environmental behavior of NH4+-N and aniline in the column. In NH4+-N experiment, the concentration of NH4+-N of flow water was 18.3mg/L, the surface of sediments was in aerobic condition. In aniline experiment, the concentration of aniline of flow water was 34mg/L, system was maintained in anaerobic condition. According to national standard, we measured the concentration of NH4+-N, aniline and so on. The result indicated that NH4+-N was involved in ion exchange, which led to the increase of concentration of Ca2+ and rigidity, moreover, nitration of NH4+-N was happened which led to the decrease of pH, in addition, denitrification and mineralization of organic N was also happed in the column .The aniline experiment was conducted in anaerobic condition, in order to simulate biodegradation process of organic contaminate in the heavy contaminated river. System was in sulfate-reducing condition, in the process of aniline biodegradation, the microorganism in the column took sulfate as electron-acceptor, take aniline as electron-donor. The result indicated that aniline was removed to a considerate degree, NH4+-N was one of the byproducts in the biodegradation process, according to result of TOC measurement, some other inter-byproduct was also produced in the aniline biodegradation process. In general, the microorganism was not very active, in order to improve aniline removal efficiency, we need take enhanced biological treatment.