Apparatus and process for treating effluents

Apparatus for treating effluents comprising:

• a reactor having an inlet for the effluent to be treated and an outlet for the treated effluent, and comprising at least one block of electrodes, the block having at least one anode and at least one cathode, the electrodes being disposed substantially parallel and spaced from one another, so as to define therebetween a space allowing the effluent to be treated to pass therethrough, thus producing, when the effluent to be treated is submitted to an electrical current, a sludge comprising at least one pollutant that is present in the effluent to be treated, and a treated effluent, the reactor also comprising means allowing the effluent to circulate between the electrodes in an upward direction;
• and
• means allowing separation of the sludge produced from the treated effluent, said means being disposed immediately above said electrodes or in the vicinity thereof and comprises a movable belt to which the sludge produced adheres in order to be transported and separated from the treated effluent and a suction means connected to a recovery tank adapted to receive the sludge, wherein the reactor comprises a first block of electrodes, and a second block of electrodes disposed downstream of said first block of electrodes, wherein said means allowing the effluent to circulate between the electrodes in an upward direction comprises a first substantially vertical wall disposed upstream of said first block of electrodes and defining a lower pathway adapted to receive the effluent to be treated, wherein the reactor additionally comprises a feeding compartment upstream of said first wall, said feeding compartment being used to collect the effluent to be treated coming from a feeding tank, and wherein it comprises means allowing the effluent to flow so as to minimize turbulence.

Apparatus for treating effluents comprising:

• a reactor having an inlet for the effluent to be treated and an outlet for the treated effluent, and comprising two blocks of electrodes, a first block adapted to treat said effluent by electrocoagulation and a second block, disposed downstream of said first block, adapted to treat said effluent by electroflotation, the blocks having at least one anode and at least one cathode, the electrodes being disposed in a plane and the global displacement of the effluent in the reactor from the inlet up to the outlet is carried out perpendicularly to that plane, the electrodes being disposed substantially parallel and spaced from one another, so as to define therebetween a space allowing the effluent to be treated to pass therethrough, thus producing, when the effluent to be treated is submitted to an electrical current, a sludge comprising at least one pollutant that is present in the effluent to be treated, and a treated effluent, the reactor also comprising means allowing the effluent to circulate between the electrodes in an upward direction and means allowing the effluent to flow so as to minimize turbulence, said means allowing the effluent to flow so as to minimize turbulence comprises a first transition tank disposed downstream of the first block of electrodes, and in communication with the latter, said first transition tank allowing to collect the effluent that has been treated with the first block of electrodes, and wherein it comprises a second transition tank disposed downstream of said second block of electrodes, and in communication with the latter, said second transition tank allowing to collect the effluent that has been treated with the second block of electrodes;
• and
• means allowing separation of the sludge produced from the treated effluent, wherein said means is located immediately above the electrodes or in the vicinity thereof, this means comprising a conveyor having a part disposed in said first transition tank, said conveyor comprising a filtering belt in movement, to which the sludge adheres so as to be carried and separated from the treated effluent, and wherein it comprises another conveyor having a part disposed in said second transition tank, said conveyor comprising a filtering belt in movement to which the sludge adheres so as to be carried and separated from the treated effluent.