Ennigerloh’s class II landfill, on a former limestone quarry, has operated since 1981. The 44 ha site holds about 6.5 million m³ and receives treated and mineral waste from Warendorf, Gütersloh, Soest, Borken, North Rhine-Westphalia and neighbouring states. Licensed until 2032.
Naue Carbofol® is a HDPE liner for landfill sealing, mining containment, and groundwater protection.
Naue Secutex® is a mechanically bonded nonwoven geotextile for separation, filtration and protection in roads, railways and hydraulic engineering projects.
The central landfill of the Ennigerloh waste management centre is located on a former limestone quarry site. It was put into operation in 1981 and had a planned area of 44ha with a backfill volume of approximately 6.5 million m³. Mechanically and biologically treated waste from the districts of Warendorf, Gütersloh, Soest and Borken (all located in Germany), as well as mineral waste from the communities of Warendorf and Gütersloh, is deposited at the landfill. In addition, waste fractions suitable for disposal are obtained from the entire state of North Rhine-Westphalia and neighbouring federal states. The Ennigerloh central landfill is assigned to landfill class II. The operation of the land fill is authorized under licensing law until 2032.
After the end of quarry operations, a rock layer of more than 30m thickness remains, which already has a natural gradient and serves as a geological barrier for base seals. The required engineering solutions for the expansion sections and the implementation of the construction measures must be planned in time to be able to guarantee disposal security.
Since the existing fill areas are already filled, new landfill volume must be generated. The starting point for landfill cell 15 is the existing rock layer as a geological barrier. This layer was built up as follows:
First, a geotechnical barrier with a permeability coefficient in the installed state of kf ≤ 1 x 10-9 m/s is installed in a minimum thickness of 1m. This layer must be thick enough to retain pollutants.
A mineral sealing layer is applied over this geotechnical barrier in two layers of 25cm each (D = 0.5m). This layer consists of clay (according to suitability certificate BQS 2.0) with a permeability coefficient of kf ≤ 1 x 10-10 m/s.
The 2.5mm thick HDPE geomembrane with BAM approval is installed in a press bond on the mineral seal, welded and then tested.
In landfill cell 15, a BAM-approved protection nonwoven with a mass per unit area of ≥ 2,000g/m² protects the geomembrane from damage resulting from the overlaying drainage layer. This consists of a track ballast with a grain size of 8/32mm and the additional load from the landfill.
The approved fill height at the highest point of the landfill is approximately 30m and thus 126m above sea level (height above sea level).
The coordinated Naue sealing system enables the development of new landfill volume while supporting long-term disposal security.
Approved materials, professional welding and subsequent testing support consistent installation quality and operational reliability.
No. 00214