| 摘要 |
In the process, a precipitant is added via a feed line 10 to the waste water in a mixing tank 1. In order to achieve efficient elimination of sulphate in a straightforward and economic manner, at least to concentrations below the permissible or tolerable levels, the precipitant is a lead-containing metered solution, the precipitated lead sulphate is removed in a separating device 3 downstream of the mixing tank 1 and is drawn off via a line 4, and the waste water which has undergone precipitation is further treated anaerobically in a sludge bed reactor 6. |
