Patent ID: 8741112

Claim:
Anode device for an electro-flocculation cell, comprising a bed of metal granules through which raw water is flown from the bottom to the top, the bed of metal granules being loosely provided in a cell box of insulating material on an electrically conducting electrode plate, provided with insulating material nozzles inserted therein and arranged in several rows, serving as current feeding means to the bed of metal granules; non-conducting, hydraulic tube connections from the insulating material nozzles to connection sockets of a tubular manifold for raw water; at least two gas injector sockets which are arranged in different axial portions along the tubular manifold for the supply of a driving gas, and which are provided to protrude into the tubular manifold and which are connected to a gas supply device, the gas supply device for providing a pulsed supply of driving gas to the at least two gas injector sockets by means of which pulsed driving gas is injected into the at least two gas injector sockets; wherein the tubular manifold comprises the connection sockets in rows in lines next to each other including a central row and side rows on an upper side of the tubular manifold and along the length thereof for connection to the insulating material nozzles wherein a number of connection sockets and the rows thereof correspond to a number and rows of the insulating material nozzles, and wherein the connection sockets of the central row of connection sockets are alternatively connected along the row to the corresponding insulating material nozzles located on one side end area of the electrically conducting electrode plate and to the corresponding insulating material nozzles which are located on an opposite side end area of the electrically conducting electrode plate; whereby fluid connections for the driving gas and the raw water are provided to the cell box such that the metal granules are moved by the gas pulses alternatively on the one end side and the other end side of the cell box.