BIOLOGICAL WASTE WATER TREATMENT

摘要

IMPROVED WASTE WATER TREATMENT Removal of nitrogenous and carbonaceous contaminants is carried out in a single sludge two-tank system by a symbiotic two-step process whereby the second tank mainly oxidizes ammonia to nitrate and the first tank mainly reduces nitrate to nitrogen gas. Carbonaceous material is removed mainly in the first tank by a combination of biological uptake with cell growth and used as a final electron acceptor in respiratory denitrification.