Device and shaft for the decentralised treatment of water and corresponding process

摘要

The assembly to treat rainwater from roofs and roads has a drain shaft (1) with two spaced plates (7,8) of a number of segments, mounted at intervals, forming a hollow zone with the plates held apart by a spacer (9). The zone accommodates an ion exchanger (10) to reduce heavy metals in the water, as a unit (6) which is sealed at one side and the ion exchanger is regenerated by a regenerating fluid passed through the unit. The assembly to treat rainwater from roofs and roads has a drain shaft (1) with two spaced plates (7,8) of a number of segments, mounted at intervals, forming a hollow zone with the plates held apart by a spacer (9). The zone accommodates an ion exchanger (10) to reduce heavy metals in the water, as a unit (6) which is sealed at one side and the ion exchanger is regenerated by a regenerating fluid passed through the unit. The unit is inserted into the shaft through a manhole (5). The ion exchanger contains granules of zeolite.