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Karl Dirkes Aparna Kapoor
db technologies BV Intergeo Solid Waste Management
High quality products from municipal waste
The waste problem
Municipal solid waste has always been considered a problem to be solved as quickly as possible disposing of it in landfills.
If we change the approach to the waste, it is possible to find a rich source of recyclable materials, fertilizer and energy.
What is in Indian waste?
Recyclables Dry fraction Biogenic fractionMunicipal Solid Waste is composed of 3 main product groups:
The potential of efficient waste separation
Strong potential to produce a range of competitive products:
• Recyclables of high quality• Non-organic fraction that is really dry and suitable for
production of high-quality fuel• Organic fraction that is clean and suitable for use in
anaerobic digestion and as fertilizer thus preventing the loss of the valuable material in landfilling
To date, the potential of recycling organic waste is in its infancy and remains largely untapped
The challenge: Efficient waste separation
• Real challenge is to separate organics from the rest• Current solutions:
1. Separation at source or so-called “kerbside collection”• Still a lot of contamination• Hard to implement for urban areas
1. Mechanical separation at centralized waste treatment facilities• Relatively low separation efficiency (60-65%)• A lot of organics in non-organic fraction and vice versa
Clean separation is key to high-value use of waste
How is the OREX press working?
• Organic extruder press for municipal waste
• High-pressure extrusion into two valuable waste streams that are each more valuable with the absence of the other
wet organic fraction dry non-organic
Waste separation with OREX press
Principle: Soluble organic matter behaves like a liquid and is separated from dry non-organic fraction
Feed phaseLow pressure
Expulsion phase
Low pressure
Waste separation with OREX press
Result of extrusion processDry fraction Biogenic fraction-plastics - liquid biogenic fraction -textiles = raw material for -paper and cardboard-various minerals-metals
High-quality fuel recyclables anaerobic digestion fertilizer
Waste separation with OREX press
Dry fraction
After further separation• Sellable recyclables (plastics, paper, metals)• High-quality fuel with caloric value 3000/3500Kcal/Kg
- without much water content- With less odour and insects
Waste separation with OREX press
Waste separation with OREX press
Waste cleaning with Cyclone
Experiences in India
THANK YOU!
FILM
Our partner in India:db technologies BV Intergeo Solid Waste ManagementKarl Dirkes Aparna Kapoork.dirkes@dbtechnologiesbv.nl aparna@ctechsbr.com
www.dbtechnologiesbv.nl
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