Sludge dewatering of Gembloux station is provided by a belt filter located on the first floor of the technical building of the station. The sludge is then whitewashed in spaces situated just below the local dehydration and finally conveyed to the storage silos.
Thixotropic characteristic of the sludge is highly stressed by transportation in the conveying screw. Despite a reduction of the rotational speed of the vertical screw, the latter cause much shear and degrade the consistency of the sludge. Thus, in certain periods, consistency is so degraded that holding heap can be reached which causes complaints of farmers who can no longer validly store limed sludge on agricultural land (spreading).
This contract is to carry out adjustments to the conveying elements of whitewashed mud and moving the injection of lime close to the belt filter.
The sludge storage in both existing silos is maintained, the operator can select the most suitable solution according to the quality of dehydration.
Short description of the work:
The works mainly comprise the following:
- Demolition of roads including his chest, sidewalks and faulty drainage system.
- Construction of a new road and sidewalks with the implementation of a retarder plate at the crossroads and a crossing sidewalk.
- Installation of a new pipe containing the mixed water from the road and dwellings.