Underground installation

When installing separator systems in the ground, the following must be observed: 

• that there are no supply lines or cables in the planned area.
• It must be ensured that access for maintenance, inspection and disposal is guaranteed at all times.
• To facilitate the user-friendly insertion of bubbles during a leak test, an inspection chamber may need to be installed upstream of the separator.
• The installation site should, where possible, be located outside the traffic area and must be chosen so as not to impair subsequent land use.
• Separator systems for light liquids should be installed near the points where the contaminated water is generated,
• the systems must be easily accessible to disposal vehicles. Special operating conditions or structural circumstances may necessitate a location further away from the points where the wastewater is generated.
• Separator systems should be arranged in such a way as to prevent frost damage, and all parts requiring regular maintenance must be easily accessible at all times.
• Where necessary, covers for separator systems must be supported in such a way that the load on the separator does not exceed its load-bearing capacity.
• For load class D up to 40 t, a load distribution plate on site is required. We can supply the relevant reinforcement plans.
• A water connection for filling and Cleaning the separator system must be provided.
• Backfilling the excavation and filling the tank: The tank must be backfilled in layers with 0/16 crushed stone, with each layer of max. 30 cm compacted to Dpr=97% using light compaction equipment. At the same time, the tank must be filled with water so that there is a maximum difference of 30 cm between the liquid level and the level of the backfill material.
• Installation on sloping ground: When installing the separator on sloping ground, it is essential to ensure that the horizontal earth pressure on non-cohesive soil is counteracted by a retaining wall of appropriate design.