Hazardous waste landfill

A Hazardous waste landfill is a landfill with waste that poses substantial or potential threats to public or the environment. Therefore the focus on leak free sealing layers is absolutely mandatory.

Sensor offers permanent online systems where the sealing layer is monitored 24/7.
systems are suitable for such application and allow the client to monitor the integrity of the sealing layer (geomembrane) for more than 30 years (guaranteed by BAM certification of SENSOR DDS® technology).


General project info:

  • Toxic waste landfill
  • Area of 11 400m²
  • SENSOR DDS® RMS 24/7 monitoring installed
  • Sensor grid 5x5m (leak resolution cca 25m²)
  • 450 sensors and 35km of cable used
  • Single geomembrane HDPE 2.5mm both sides smooth

Landfill design cross section (from bottom to top):

  • Compacted clay 50 cm
  • SENSOR DDS® FIXED components 5x5m
  • Geomembrane
  • Protective geotextile
  • Drainage layer – gravel
  • Hazardous waste

At this site we have applied our standard SZLP (Sensor Zero Leakage Philosophy) which means that apart from the permanent leak monitoring system installation we have been monitoring whole landfill construction process consisting of:

  • SENSOR DDS® FIXED – buried components installation in grid of 5x5m
  • SENSOR DDS® MIT – survey straight after geomembrane installation to locate any pinholes made during installation or transport of geomembrane
  • SENSOR DDS® Mobile – dipole survey after installation of drainage, protective layer to locate any damage which could occur during placing overliner onto the geomembrane
  • First geomembrane integrity control using installed permanent online SENSOR DDS® RMS system via Sensor Cloud

SENSOR DDS® RMS installed on site has following features:

  • Online remote connectivity
  • 24/7 geomembrane monitoring
  • Live alerts by SMS/Email
  • Full access via Sensor Cloud
  • Rapid resolution of leaks
  • Security camera
  • Weather station
  • 10″ full HD touch display
  • 12 months events list
  • Battery back-up for 3 days

The SENSOR DDS® RMS online monitoring system was installed in 2014. System installation was divided into two stages. First stage consisted of buried components installation. There was 450 sensors in total installed in layout 5x5m below geomembrane. Each sensor is connected to monitoring centre using its own cable for best signal quality possible.

The second phase consisted of monitoring panel installation and calibration process of the whole system. Control panel runs on 220V power but is equipped with enough batteries to run 3 days in case of power outage.

At the end of the landfill building phase, Sensor issued certificate of geomembrane integrity and Sensor is now actively monitoring this hazardous waste landfill 24/7 using its SENSOR DDS® RMS system.

Sensor zero leak philosophy applied to toxic landfill in Europe. The landfill is protected 24/7.

Installation planning.

Site preparation for SENSOR DDS® FIXED installation.

Installation of SENSOR DDS® FIXED buried components.

Installation of SENSOR DDS® FIXED buried components.

SENSOR DDS® MIT testing of exposed geomembrane.

SENSOR DDS® MIT testing of exposed geomembrane.

Sensor quality control of extrusion welding.

Damage localized with SENSOR DDS® MIT Arc tester.