| 摘要 |
<p>A process for treatment and purification of industrial waste water, especially with a high nitrate and sulphate concentration, in which the denitrification is retarded or checked by inhibitors, the process comprising: (a) in an aerobic prepurification step (5), bringing about microbial decomposition and destruction of the inhibitors that adversely affect the denitrification by (in any order) raising the pH of the waste water to 5.5-7 by addition of basic reagents and adjusting the temperature to a suitable temperature for the aerobic treatment, especially 20-30 degrees C; (b) carrying out the aerobic prepurification step (5) with aeration in a reactor that is a whirling bed reactor and a living sludge reactor; and (c) subjecting the outlet stream from the prepurification stage to denitrification, preferably in a filled column, optionally with the addition of a carbon source, especially methanol.</p> |
