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Solid waste


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Solid waste Management presentation

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Solid waste

  1. 1. SEPARATION, PROCESSING AND TRANSFORMATION OF SOLID WASTE Prepared by: - Khalid Omer - Mohamed ELhadi - Eltohamy Elshamy
  2. 2. :Introduction Environmentally sound management of increasing amounts of solid wastes is among the topics of major concern today in most cities. The logical starting point for solid waste management is to reduce the amounts of waste that must be managed, that is, collected and disposed of as nuisances and hazards. Waste management could be a very intricate problem if there is a need for such a system to be implemented within a society. Training the people how to separate their wastes, choose the best technology for treatment the wastes, controlling the environmental impact of waste treatments method and many other economical and technical aspects make the MSWM as a complicated system.
  3. 3. Separation and processing of solid wastes: There are several techniques for separation of MSW such as : 1- Size Reduction: Collected waste materials are mechanically reduced in size using shredders, glass crushers, wood grinders, etc.
  4. 4. 2- Screening: It is used to separate mixtures of materials of different size into two or more size fractions by means of one or more screening surfaces e.g. vibrating screens, rotary screens, disc screens, etc.
  5. 5. 3- Magnetic Separation: Ferrous metals are separated from other waste materials by utilizing their magnetic properties.
  6. 6. Key concepts in municipal waste processing Waste reduction: all means of reducing the amounts of waste that must be collected and disposed of by solid wasteauthorities and prevent recyclables and compost able organics from entering final waste streams. Source reduction any procedure to reduce wastes at the point of generation, in contrast to sorting out recyclable components after they have been mixed together for collection. Recycling: the process of transforming materials into secondary resources for manufacturing new products. Redemption center: waste trading enterprise that buys recyclable materials and sells to brokers. Sometimes also called "buy-back center"
  7. 7. Resource recovery Resource recovery means the obtaining of some economic benefit from material that someone has regarded as waste. It includes * reuse: being used for the same purpose again. * recycling : processing material so that it can be used again as the same material *conversion : processing the material to make .something different * energy recovery: usually referring to the burning of waste so that the heat can be used.
  8. 8. Materials Recovered from Municipal solid Wastes