查看文章

In order to study the impact on the river Seine of the waste water effluents from the city of Paris and its suburbs, a detailed characterisation was made of both raw and treated effluents from the three main treatment plants in this area which differ both in size and type of treatment. The waste water samples were subjected to analyses of the following pools of carbon: dissolved organic carbon (DOC), particulate organic carbon (POC), biodegradable fractions of DOC (BDOC) and of POC (BPOC), the biochemical oxygen demand (BOD). Inorganic and organic forms of nitrogen and phosphorous, total bacterial biomass and nitrifying bacterial biomass were also investigated in parallel. On the basis of the results of the analysis performed, a specific load per inhabitant and per day (expressed in g inh⁻¹ d⁻¹) for raw and the different types of treated waste water was calculated for each variable considered in this study. For raw …