| 摘要 |
The process for the electrochemical treatment of sea water-containing wastewaters (effluents) includes the recovery of a coagulant in the interelectrode space between insoluble and soluble electrodes of a diaphragm electrolysis cell and the subsequent discharge of the purified water. According to the invention, the coagulant is recovered in the interelectrode space by passing a current through only the insoluble electrodes, the current strength of which is sufficient to displace the potentials of the soluble electrodes to the range of their active dissolution, while the total concentration of coagulants in the interelectrode space between the insoluble and soluble electrodes is constant, which the self-regulation ensures. The arrangement for carrying out the process contains a diaphragm electrolysis cell having two or more electrode pairs, each of which is composed of a bottom insoluble electrode (2) and a top soluble electrode (3), which are arranged axially to each other. According to the invention, in each electrode pair, the insoluble electrode (2) is separated from the soluble electrode (3) by a dielectric intermediate layer (4), the outline of which coincides with an end surface of the insoluble electrode (2) which faces the soluble electrode (3), the length ratio between the soluble electrode (3) and the insoluble electrode (2) being at least 1 : 2. <IMAGE> |
