Process for removal of carbon dioxide (CO 2) and hydrogen sulfide (H 2 S) from a crude synthesis gas containing CO 2, H 2 S, water and metal carbonyls, with methanol as scrubbing medium, comprising the following steps: a) feeding the crude synthesis gas to an absorption device, b) bringing the crude synthesis gas into contact with a cold methanol part-stream and with at least one further methanol part-stream returned from downstream process steps in the absorption device, wherein a product gas stream depleted of acidic gas components, water and metal carbonyls is obtained and is discharged from the process, and wherein a methanol part-stream laden with acidic gas components, water and metal carbonyls is obtained, c) regenerating the laden methanol part-stream in multiple stages by pressure reduction (flashing) and/or temperature increase (hot regeneration), wherein at least one regenerated methanol part-stream is obtained which is returned to process step b), wherein furthermore one or more gas streams containing carbon dioxide and/or hydrogen sulfide are obtained and are discharged from the process, and wherein a methanol part-stream depleted of acidic gas components and containing water and metal sulfides is obtained, d) introducing the methanol part-stream depleted of acidic gas components and containing water and metal sulfides into a methanol/water separating column, separating the said part-stream by distillation in the methanol/water separating column into a methanol-containing top product, which is at least partially returned to process step b) and/or step c), and into a water-containing bottom product, which is discharged from the process, characterised in that e) water is added directly into the feed line of the methanol part-stream depleted of acidic gas components and containing water and metal sulfides before the introduction of the part-stream into the methanol/water separating column, or in that f) water is added directly into the feed line of the methanol part-stream depleted of acidic gas components and containing water and metal sulfides before the introduction of the part-stream into the methanol/water separating column, and water is injected directly into the methanol/water separating column at at least one point, wherein an addition of water directly into the feed line to the methanol/water separating column is understood as the absence of containers for mixing, buffering, precipitation or other purposes which serve to bring the added water into contact with the water-containing methanol before entry into the separating column. a) feeding the crude synthesis gas to an absorption device, b) bringing the crude synthesis gas into contact with a cold methanol part-stream and with at least one further methanol part-stream returned from downstream process steps in the absorption device, wherein a product gas stream depleted of acidic gas components, water and metal carbonyls is obtained and is discharged from the process, and wherein a methanol part-stream laden with acidic gas components, water and metal carbonyls is obtained, c) regenerating the laden methanol part-stream in multiple stages by pressure reduction (flashing) and/or temperature increase (hot regeneration), wherein at least one regenerated methanol part-stream is obtained which is returned to process step b), wherein furthermore one or more gas streams containing carbon dioxide and/or hydrogen sulfide are obtained and are discharged from the process, and wherein a methanol part-stream depleted of acidic gas components and containing water and metal sulfides is obtained, d) introducing the methanol part-stream depleted of acidic gas components and containing water and metal sulfides into a methanol/water separating column, separating the said part-stream by distillation in the methanol/water separating column into a methanol-containing top product, which is at least partially returned to process step b) and/or step c), and into a water-containing bottom product, which is discharged from the process, characterised in that e) water is added directly into the feed line of the methanol part-stream depleted of acidic gas components and containing water and metal sulfides before the introduction of the part-stream into the methanol/water separating column, or in that f) water is added directly into the feed line of the methanol part-stream depleted of acidic gas components and containing water and metal sulfides before the introduction of the part-stream into the methanol/water separating column, and water is injected directly into the methanol/water separating column at at least one point, wherein an addition of water directly into the feed line to the methanol/water separating column is understood as the absence of containers for mixing, buffering, precipitation or other purposes which serve to bring the added water into contact with the water-containing methanol before entry into the separating column.