Study on Rural Sanitary Sewage Treatment in Compound Purifying Tank

摘要

In the present work, a novel compound purifying tank was adopted in the rural sanitary sewage treatment. The cultivation and acclimation of biological film could be completed in a short start-up by aerobic precoating. According to the running results, the average COD removal rate reached 59.62%, and the removal efficiency of TP was 33.4%. For the denitrogenation, the removal rates were not remarkable(21.7 to (NH_4)~+-N,21.9 to TN), but the large removal quantity of (NH_4)~+-N and TN were abtained as 8.58mg/L and 9.12mg/L, respectively. The study suggests that the compound purifying tank is a potential alternative for rural sanitary sewage treatment.