| 摘要 |
The invention relates to a method for treating waste water containing sulphides and ammonium, in particular waste water from an urban or industrial origin or digestion feedbacks, condensates and lixiviates. The waste water is first subjected to an anoxic processing (1) in a free-culture biological manner, wherein, in a first step (1a), the organic carbon is essentially removed by heterotrophic bacteria and, during a second step (1b) separate from the first, the sulphides are oxidised in a biological manner by autotrophic bacteria with nitrites or nitrates reduction. The effluent from the second step (1b) is submitted to a free-culture aerobic biological treatment (2) for converting the ammonium into nitrates. The conjunction with a sequential aerobic biological reactor (9) compensates a potential nitrate deficit. |
