WASTEWATER TREATMENT ARRANGEMENT, FLOW-SEPARATING WALL, IN PARTICULAR FOR USE IN SUCH A WASTEWATER TREATMENT ARRANGEMENT, AND AT LEAST ONE RETROFIT KIT COMPRISING SUCH A FLOW-SEPARATING WALL

摘要

The invention relates to a wastewater treatment arrangement (10) for removing foreign substances from wastewater according to density, comprising at least one wastewater treatment pipe (12) that has at least one flow area (30) through which the wastewater flows and comprising at least one reduced-flow collecting area (32, 34) in which the foreign substances that sink to the bottom and/or rise to the top according to density accumulate. The collecting area (32, 34) is separated from the flow area (30) by a flow-separating wall (36, 38) which is provided at the bottom and/or at the top of the flow area and in which a plurality of through-channels (40) is formed. According to the invention, if the ratio of the length (L) of the wastewater treatment pipe (12) to the inner diameter of the wastewater treatment pipe exceeds a value of 20, then in the case of at least some of the through-channels (40), the ratio of the length of said through-channels (40) to the inner diameter of the wastewater treatment pipe (12) has a value of at least 0.075.