Legacy waste & resource recovery
Scientific remediation of old dumpsites through waste excavation, mechanical screening, material recovery, and responsible management of recovered materials and rejects.
Legacy waste project photography
Understanding the challenge
Legacy waste is material that has accumulated at dumpsites over many years. Scientific remediation starts by understanding the site, then excavating and processing the accumulated waste, separating recoverable materials and managing remaining fractions responsibly.
Ecostan Infra's existing service information describes bio-mining and bio-remediation, trommel screening, land reclamation and environmental monitoring as part of its legacy waste capability.
A site-specific framework
Explore the key stages of scientific legacy waste remediation. Each stage is separately explained; actual operations may overlap, repeat or vary according to site conditions and the approved remediation plan.
Stage 01
Understand the dumpsite's boundaries and conditions and assess waste characteristics, site constraints and potential environmental risks.
Stage 02
Excavate accumulated waste using suitable machinery in a planned and controlled manner.
Stage 03
Feed excavated material into suitable screening equipment and separate fractions according to size and the selected process.
Stage 04
Separate recoverable materials where technically and economically feasible, and identify appropriate next steps for each fraction.
Stage 05
Evaluate soil-like material, recyclables, combustible fractions and other recovered materials based on their characteristics.
Stage 06
Characterize material that cannot be beneficially recovered and identify an appropriate authorized treatment or disposal route.
Stage 07
Assess the remediated area against project requirements and undertake site improvements where included in the scope.
Technology and operations
Equipment and working methods are selected to suit the site, waste characteristics and project requirements.
Screening equipment
Ecostan's service information lists trommel screening machines in varied capacities for processing mixed municipal solid waste, C&D waste and other suitable materials.
Site operations
Scientific segregation of legacy waste can support the recovery of suitable fractions such as RDF, compost and inerts, depending on material characteristics.
Environmental management
Site leveling, landscaping and greening after waste removal, together with dust, odor and environmental monitoring measures as relevant to project requirements.
The existing service information specifically identifies trommel screening machines. The other photographs show project or operational contexts and do not represent a claim that Ecostan manufactures or supplies particular equipment.
A responsible approach
Remediation outcomes depend on site conditions, waste composition, project scope, environmental requirements and approvals.
Scientific processing can reduce the legacy waste remaining at a dumpsite.
Reusable and recyclable fractions may be recovered where appropriate.
Planned operations can include environmental safeguards and monitoring.
Future land use depends on site conditions, project scope and required approvals.
Published project portfolio
Project locations and photographs shown here are identified in Ecostan Infra's existing project information.
Completed project
Legacy waste project; before-and-after photographs are available in the project portfolio.
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Completed project
Project photographs and before-and-after imagery are available in the project portfolio.
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Completed project
Project photographs and before-and-after imagery are available in the project portfolio.
View ProjectQuestions and answers
Each remediation plan depends on the conditions and requirements of its site.
It is a site-specific approach to addressing waste accumulated over time at a dumpsite. Activities may include assessment, excavation, screening, material recovery and suitable management of residual fractions.
Biomining processes accumulated waste to separate potentially recoverable material fractions, rather than treating the mixed waste only as material for disposal. The approach and recovery options depend on waste characteristics and site conditions.
Excavated material is processed using suitable screening equipment to separate fractions according to particle size and the selected process. The equipment and method depend on material characteristics and project requirements.
Some fractions may be suitable for recovery or reuse. Suitability depends on their characteristics, required testing, applicable standards, downstream users and necessary approvals.
Rejects should be characterized and directed to an appropriate authorized treatment or disposal route with required environmental and regulatory safeguards. Different rejects may require different routes.
Project timelines vary with the site, waste quantities and characteristics, access, equipment, approved scope and regulatory requirements. A site assessment is needed to inform a project-specific schedule.
Relevant factors include waste composition and characteristics, site boundaries and constraints, potential environmental risks, project objectives, applicable requirements and the approved remediation plan.
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Explore a site-specific approach to scientific remediation, material recovery and responsible waste management.