Patent ID: 8337699

Claim:
A reactor for anaerobically purifying a waste water from a paper industry, said reactor comprising: a reactor vessel including a bottom region having a bottom; a plurality of inlets arranged in said bottom region of said reactor vessel to feed the waste water to be purified into the reactor; at least one outlet for discharging a purified water; at least one sediment drain; a plurality of supply pipes, at least one of said plurality of inlets being fed by one of said plurality of supply pipes, said plurality of inlets being arranged at a height above said bottom such that said plurality of inlets, when a sediment deposit is deposited on said bottom, extends beyond said sediment deposit which forms a slope, one of at least a majority of and all of said plurality of supply pipes protruding upwardly beyond said bottom of said reactor vessel; a collecting supply pipe, said plurality of supply pipes being fed by one said collecting supply pipe, at least a majority of said plurality of supply pipes of said collecting supply pipe supplying a maximum of ten of said plurality of inlets with the waste water to be purified; and a plurality of control valves, at least said majority of said plurality of supply pipes each respectively being equipped with one of said plurality of control valves.