A urea finishing method including an off-gas treatment, the method comprising: a) supplying a urea melt and air to a finishing section, and solidifying the urea melt to give a solid urea product and off-gas, wherein the off-gas comprises urea dust and ammonia, b) supplying the off-gas to a quenching zone and quenching the off-gas by spraying a quench liquid, to give a mixed stream comprising quench liquid and quenched off-gas, wherein the quench liquid comprises dissolved urea, c) supplying the mixed stream comprising quench liquid and quenched off-gas to a scrub column through an inlet, d) passing the quenched off-gas through a first mist eliminator in said scrub column and subsequently through a venturi tube comprised in a venturi stage to give a scrubbed gas stream, wherein the first mist eliminator is washed with a first wash liquid and wherein a spray liquid is sprayed in the gas stream in said venturi stage, wherein said scrub column comprises a sump below said first mist eliminator, wherein said sump comprises a first sump compartment and a second sump compartment which are separated from each other by a wall, wherein said inlet is arranged above said first sump compartment and wherein at least 80 wt.% of the quench liquid comprised in said mixed stream is collected in said first sump compartment, wherein the first sump compartment receives said first wash liquid from said first mist eliminator; the method further comprising: e) recirculating liquid, which is rich sump liquid, from said first sump compartment as quench liquid to said quenching zone, and f) recirculating liquid, which is lean sump liquid, from said second sump compartment to said first mist eliminator as said first wash liquid and/or to said venturi stage as said spray liquid. a) supplying a urea melt and air to a finishing section, and solidifying the urea melt to give a solid urea product and off-gas, wherein the off-gas comprises urea dust and ammonia, b) supplying the off-gas to a quenching zone and quenching the off-gas by spraying a quench liquid, to give a mixed stream comprising quench liquid and quenched off-gas, wherein the quench liquid comprises dissolved urea, c) supplying the mixed stream comprising quench liquid and quenched off-gas to a scrub column through an inlet, d) passing the quenched off-gas through a first mist eliminator in said scrub column and subsequently through a venturi tube comprised in a venturi stage to give a scrubbed gas stream, wherein the first mist eliminator is washed with a first wash liquid and wherein a spray liquid is sprayed in the gas stream in said venturi stage, wherein said scrub column comprises a sump below said first mist eliminator, wherein said sump comprises a first sump compartment and a second sump compartment which are separated from each other by a wall, wherein said inlet is arranged above said first sump compartment and wherein at least 80 wt.% of the quench liquid comprised in said mixed stream is collected in said first sump compartment, wherein the first sump compartment receives said first wash liquid from said first mist eliminator; the method further comprising: e) recirculating liquid, which is rich sump liquid, from said first sump compartment as quench liquid to said quenching zone, and f) recirculating liquid, which is lean sump liquid, from said second sump compartment to said first mist eliminator as said first wash liquid and/or to said venturi stage as said spray liquid. wherein said scrub column comprises a sump below said first mist eliminator, wherein said sump comprises a first sump compartment and a second sump compartment which are separated from each other by a wall, wherein said inlet is arranged above said first sump compartment and wherein at least 80 wt.% of the quench liquid comprised in said mixed stream is collected in said first sump compartment, wherein the first sump compartment receives said first wash liquid from said first mist eliminator; the method further comprising: e) recirculating liquid, which is rich sump liquid, from said first sump compartment as quench liquid to said quenching zone, and f) recirculating liquid, which is lean sump liquid, from said second sump compartment to said first mist eliminator as said first wash liquid and/or to said venturi stage as said spray liquid. e) recirculating liquid, which is rich sump liquid, from said first sump compartment as quench liquid to said quenching zone, and f) recirculating liquid, which is lean sump liquid, from said second sump compartment to said first mist eliminator as said first wash liquid and/or to said venturi stage as said spray liquid.