| 摘要 |
The invention concerns a process for the purification of waste waters. According to the process the compounds dissolved or suspended in the waste water are separated by means of enzymatic oxidation and precipitation. According to the invention, there is added to the waste water at least one oxidoreductase, one oxidising agent, if necessary, at least one precipitation chemical and, if necessary, one substrate which is oxidised in the presence of the oxidoreductase such that at least a part of the precipitant, of the oxidising agent and of the enzyme substrate is added to the waste water no later than simultaneously with the oxidoreductase. With the help of the process it is possible to reduce the AOX, COD, phosphorus and nitrogen contents of pulp and paper industry waste waters. |
