Waste class course work #22


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Waste class course work #22

  1. 1. Decomposition• Decomposition is the break down of organic matter, by bacteria by organisms. Decomposition in waste treatment takes place mainly in landfills. Landfills are sites for disposal of waste materials by burial.
  2. 2. Respiration• Is the chemical process by which energy is released from the breaking down of glucose or other food substances. Respiration has to be present in the breaking down of waste materials, because organisms such as bacteria get their energy from this type of respiration especially if they are classified as domestic waste which is mainly from the household. Example: paper, plastic and waste food materials.
  3. 3. Hazardous Waste Industrial Waste Solid waste Types of WastesAgricultural Waste Medical waste Solid Waste
  4. 4. Paper Cans Solid WastePlastics Bottles Containers
  5. 5. Solid Waste• Solid are any discarded materials, which mainly include house hold waste with the addition of commercial waste.
  6. 6. Example of how Solid Waste are treated # 1 Landfills
  7. 7. Example of Solid Waste: Waste Treatment for Paper • Recycling- Hand-made recycling Step 1 Step 2 Step 3Step 4 Step 5 Step 6 Step 7
  8. 8. Paper treatment recycling process After work Step 8 Paper is set to dry Can be use for post cards ,note books etc
  9. 9. TiresBuilding waste Pesticide Agricultural Waste scrap metalManure
  10. 10. Waste treatment for TiresTyres :Silage clamping
  11. 11. Silage Clamp• Silage is a form of conservation of grass produced by farmers. This grass is feed to cattle and sheep. The tires are placed on top of the grass so that the moisture is being kept in side the grass and to conserve them especially in winter when less grass are grown.
  12. 12. Example: Waste treatment of Sharps (needles and knives) A sharp container Safety box An incinerator
  13. 13. Reactive:Examples: Peroxide solutionsIgnitable Waste: Examples: Hypochlorite solutions or solidsWaste oilsUsed solventsOrganic cleaning materialsPaint wastes Hazardous Waste Corrosive Waste: Examples: Toxic Waste acids from metals cleaning processes Waste pesticides
  14. 14. Example of waste treatment: Toxic (liquid form)• This may be pumped deep underground, by deep-well injection. The well must be drilled below aquifers, into porus rocks separated by imperious clay.
  15. 15. Ash ( from combustion) Sludge Industrial Waste Waste gasesScarps
  16. 16. Example of waste treatment: Scraps from factories after manufacturing (paper, plastics, mental)These waste is treated by either:Reduce, reuse and recyclingReduction methodsTreatment methodsIncineration systemsLandfilling
  17. 17. Recycling• Recycling is processing used materials into new products to prevent waste of potentially useful materials, reduce the consumption of fresh raw materials, reduce energy usage, reduce air pollution and water pollution by reducing the need for "conventional" waste disposal, Recycling is a key component of modern waste reduction.
  18. 18. Incineration• Hospital waste incineration involves the application of combustion processes under controlled conditions to convert wastes infectious and pathological material to inert mineral residues and gases. The incineration systems are the same than other type of wastes.