Lubna landfill

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FIG. 21 Mineral filter layers used for peripheral and “finger” pipe drainages the Lubna landfillThe terrain surrounding the landfill has a low gradient. Therefore a number of control sinks (every25-50 m) along the peripheral drain along with two pumping stations have been designed toprotect the drainage system against silting up. The collected leachate flows to the water cleaningplant in the south-eastern corner of the landfill and finally to the surface streams.Additional drainage was designed on the slopes and along technological roads. The open waterreservoirs were designed for the rain water flow from the landfill slopes (Fig. 4).8.3 Mineral capping systemTaking into account the high slope inclination, the constructed degassing system and introductionof plants on the landfill surface, the former planned capping system with a geomembrane wasreplaced with clay mineral and compost layers. The capping system of the landfill surface wasconstructed successively with the increase, of the landfill height.The compacted clay sub-layers of the mineral capping have the thickness of 03 m. The minimaldegree of compaction was I s = 0.92. A few clay layers were created to protect embankment forwaste layer disposal (Fig. 22). The scheme of the mineral capping system on the landfill slopes ispresented in Fig. 23.18
FIG. 22 Construction of the clay capping systemFIG. 23 Construction of berms and the clay capping system of the Lubna landfill8.5 Ecological remediation with plantsThe upper layer of the capping system was made of compost produced from municipal wastes.The results received from laboratory tests of the compost showed that it is a good product forfertilising plants. Ecological remedial works with plants on the Lubna landfill have been started afew years ago. The design of the remedial works with plants proposed the growth of more thanthirty plant species, including: trees, shrubs, and perennial plants on the landfill surface. The plantspecies were selected depending on the water content of clay and compost forming the cappingsystem (Fig. 24). The merge of technical and biological solutions gives good results in theremediation of old landfills (Fig. 25).19
Page 1: GeoEnvNetStudy Panel 1 - LandfillsL
Page 4: FIG. 2 View of the landfill and nea
Page 8 and 9: 4.4 Permeability testsThe permeabil
Page 10 and 11: 205119.620455.212013020276.51 2 01
Page 12 and 13: Table 3. Annual water balance for t
Page 14 and 15: 7 Groundwater modellingRecently, a
Page 16 and 17: FIG. 17 Construction of cut-off wal
Page 20 and 21: FIG. 24 Zones with different moistu
Page 22 and 23: 9 Water monitoring systemThe local
Page 24 and 25: Table 4. Influence of a vertical ba
Page 26 and 27: Table 6. Results of quality tests o

Lubna landfill

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