Device for separating paint overspray from the overspray-laden booth exhaust air of paint shops having: a) at least one separation surface (42a, 42b; 142a, 142b; 242a, 242b), along which the booth exhaust air is guidable and which is electrically conductive and is connected with one pole of a high voltage source (74; 174; 274); b) an electrode apparatus (56; 156; 256) arranged in the air stream which is associated with the separation surface (42a, 42b; 142a, 142b; 242a, 242b) and is connected with the other pole of the high voltage source (74; 174; 274); c) means with which the separated paint overspray is conveyed away from the separation surface (42a, 42b; 142a, 142b; 242a, 242b), wherein d) to the separation surface (42a, 42b; 142a, 142b; 242a, 242b) an electrically conductive separation liquid is deliverable, which overflows the separation surface (42a, 42b; 142a, 142b; 242a, 242b) such that a majority of at least the solids passes from the by-passed booth exhaust air into the separation liquid and is conveyed away thereby, wherein e) multiple separation units (26, 126, 226) are provided, which comprise two plain separation surfaces (42a, 42b; 142a, 142b; 242a, 242b) oriented in different directions; f) the separation units (26, 126, 226) are arranged such that two separation units (26, 126, 226) are opposite one another by one separation surface (42a, 42b; 142a, 142b; 242a, 242b) each, and an electrode apparatus (56; 156; 256) is each arranged between the opposite separation surfaces (42a, 42b; 142a, 142b; 242a, 242b) of two separation units (26, 126, 226), characterized in that g) separation liquid flows from an overflow channel (40; 140; 240) over the separation surface (42a, 42b; 142a, 142b; 242a, 242b) of one separation unit (26, 126, 226), wherein the overflow channel (40; 140; 240) is provided in a curved portion (38; 138; 238) of the separation unit (26, 126, 226), such that the separation liquid passes in each case as a continuous film to the separation surfaces (42a, 42b; 142a, 142b; 242a, 242b) through curved flanks (70a, 70b; 170a, 170b; 270a, 270b) of the curved portion (38; 138; 238) of the separation unit (26, 126, 226) adjacent to the overflow channel (40; 140; 240) and flows down over the separation surfaces (42a, 42b; 142a, 142b; 242a, 242b) still as a continuous film of separation liquid. a) at least one separation surface (42a, 42b; 142a, 142b; 242a, 242b), along which the booth exhaust air is guidable and which is electrically conductive and is connected with one pole of a high voltage source (74; 174; 274); b) an electrode apparatus (56; 156; 256) arranged in the air stream which is associated with the separation surface (42a, 42b; 142a, 142b; 242a, 242b) and is connected with the other pole of the high voltage source (74; 174; 274); c) means with which the separated paint overspray is conveyed away from the separation surface (42a, 42b; 142a, 142b; 242a, 242b), wherein d) to the separation surface (42a, 42b; 142a, 142b; 242a, 242b) an electrically conductive separation liquid is deliverable, which overflows the separation surface (42a, 42b; 142a, 142b; 242a, 242b) such that a majority of at least the solids passes from the by-passed booth exhaust air into the separation liquid and is conveyed away thereby, wherein e) multiple separation units (26, 126, 226) are provided, which comprise two plain separation surfaces (42a, 42b; 142a, 142b; 242a, 242b) oriented in different directions; f) the separation units (26, 126, 226) are arranged such that two separation units (26, 126, 226) are opposite one another by one separation surface (42a, 42b; 142a, 142b; 242a, 242b) each, and an electrode apparatus (56; 156; 256) is each arranged between the opposite separation surfaces (42a, 42b; 142a, 142b; 242a, 242b) of two separation units (26, 126, 226), characterized in that g) separation liquid flows from an overflow channel (40; 140; 240) over the separation surface (42a, 42b; 142a, 142b; 242a, 242b) of one separation unit (26, 126, 226), wherein the overflow channel (40; 140; 240) is provided in a curved portion (38; 138; 238) of the separation unit (26, 126, 226), such that the separation liquid passes in each case as a continuous film to the separation surfaces (42a, 42b; 142a, 142b; 242a, 242b) through curved flanks (70a, 70b; 170a, 170b; 270a, 270b) of the curved portion (38; 138; 238) of the separation unit (26, 126, 226) adjacent to the overflow channel (40; 140; 240) and flows down over the separation surfaces (42a, 42b; 142a, 142b; 242a, 242b) still as a continuous film of separation liquid.