Page 39 - DPR Rishikesh Legacy_Neat
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Dumpsite rehabilitation projects are initiated due to one of the following reasons:
Presence of marketable material in the dumpsite that can be excavated for sale or
use;
Reduction in the closure and post operation monitoring costs of the site;
Stipulated requirement by the owner/regulator of the landfill to close and
rehabilitate the site;
Presence of toxic wastes within the dump site that poses public health risks;
To eliminate potential contamination at source;
For redevelopment of landfill site;
The main purpose of this work is Dumpsite Land Reclamation through Bio-mining of old
Dumped Municipal Solid Waste/Legacy Waste, resource recovery and Scientific disposal of
residual solid waste.
Dumpsite reclamation will be done by dividing the site into suitable sectors/loops in
consultation of the Engineer-in-charge based on the priority of land reclamation. The Total
Station survey shall be done at the time of possession of the site as well as at the
completion of each milestone of physical progress of land reclamation at the site to verify the
quantities of biominied and remaining legacy waste.
Usually the top layer has fresh waste, dust and may have several materials in the active
biological state. This layer is to be stabilized through application of Bio-Culture,
herbal/biological sanitizers, inoculants or through any suitable scientific method. Odour shall
be controlled and minimized through application of deodorant or scientific method.
Excavating the existing mixed compacted MSW in the land portion allocated/earmarked by
the Authority and sieving them by Mechanical sieving machine or any other suitable
technology proposed and accepted by the Engineer-in-charge. The excavated materials
shall be quantified (in Cubic meter, based on number of vehicles trips and capacity) after
excavation and record of the same shall be maintained.
Segregate the excavated MSW in into as many kinds and categories as possible of Useful
Material such as compost, soil conditioner, recyclables, raw RDF, filler material (Soil, C&D)
and Un-useful material such as residual Solid Waste.
Packing, storing, stacking, selling, diverting for recycling, marketing and recycling of all
Useful Material within thirty days of segregation at the cost of the Contractor, without
accumulation in the storage facility at the project site beyond thirty days.
Baling, packing, stacking, storing and sale of non-recyclable fraction of high calorific as raw
material to RDF producer/ user or sale to waste to energy or co-processing in cement plants
or to thermal power plants. The recyclable can be store separately and sell to the recycling
material vendors.
The compost/decomposed organics recovery by passing the materials through 4 mm IS
sieve.
Stacking, transporting, spreading and compacting the segregated C&D, Soil and Stone as
filler material in low level and depression area within the site and prepare well compacted
and clear ground for proposed development at site or disposing such material in the low
level area or use in earthen embankment etc.
The typical activities of biomining are represented in flow chart in Figure 4-1.
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