Start-up Experiment on Nitrification in Autotrophic Nitrogen Removal SBR Biofilm Reactor

摘要

The start-up experiment on nitrification of mid-low NH+/4-N concentration wastewaterwas carried out in four SBR(sequencing batch reactor)biofilm reactors for the establishment of corn-pletely autotrophic nitrogen removal process by the control of DO(dissolved oxygen)and HRT(hy-draulic retention time)and different media.The results show that the inoculating general active aer-obic sludge and anaerobic sludge was nitrified stably after 130 days under the conditions of tempera-ture 30°C(±2°C),ammonia contentration 60～120mg/l,DO 0.8～1.0mg/l and HRT 24h,and theYJZH media was more suitable for microorganism coherence.