Waste Abu Dhabi
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Waste Abu Dhabi

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    Waste Abu Dhabi Waste Abu Dhabi Presentation Transcript

    • Waste
      What is waste?
    • Waste - classifications
      Household waste is that which arises from houses, flats, labour camps, schools,
      universities and prisons.
      Commercial waste comes from premises used for trade, business, and entertainment
      such as malls, shops and recreation areas.
      Industrial waste is that which arise from a factory or industrial process.
      Agricultural wastes comes from premises used for agriculture such as fruit and vegetable
      growing, seed growing, dairy farming, camel farming and other livestock breeding.
      Medical waste comes from hospitals, clinics, nursing homes, dentists, surgeries etc. Wastes
      constituted wholly or partially of human or animal tissues, blood or other body fluids or
      excretions or drugs or other pharmaceutical products or bandages, needles, syringes, sharp
      medical objects or any other contagious, chemical or radioactive wastes produced by
      medical or nursing activities, treatment or health care, dentistry or veterinary and
      pharmaceutical practices or manufacturing, research, teaching, sample taking or storage.
      Marine waste comes from boats and ships visiting or working.
      Packaging waste comes from products made to be used for containment, protection,
      handling, delivery and presentation of goods from the producer to the consumer.
      Hazardous wastes comprise of residues or ash of different activities and operations
      containing properties of hazardous substances.
    • Local problems with waste
      Uncontrolled dumping
      Significant litter
      Limited recycling
      Limited education . Knowledge amongst population
    • Hazardous materials (HAZMATs)
      Hazardous substances can be:
      Ignitable, e.g. gasoline
      Corrosive, e.g. acids
      Reactive (substances that are chemically unstable and may explode in water), e.g. concentrated sulphuric acid
      Toxic (substances that can cause illness when ingested or inhaled), e.g. chlorine
    • Managing hazardous waste
      Convert to less hazardous substances
      Absorption (e.g. with charcoal or ground coffee)
      Immobilization (e.g. in ceramics or glass)
      Distillation to separate from water
      Incineration
      Chemical transformation (e.g. addition of chlorine to PCBs makes it less harmful)
      Bioremediation (microbes, plants can remove, absorb or metabolise toxins)
      Permanent retrievable storage
      Secure building
      Bedrock cavern
      Secure landfills
    • What goes into landfill?
    • What materials can be removed from landfill?
    • Used motor oil contains heavy metals and other toxic
      substances, and is considered hazardous waste.
      One quart (1/4 gallon) of oil can kill fish in thousands
      of gallons of water.
      Used motor oil can be recycled.
    • Problems with organic waste in landfill
      Leaching –groundwater contamination
      Greenhouse gases –CO2 & CH4
    • Solution to organic waste in Australia
      The organic waste produced by the hospitality classes a college in Sydney is disposed of using the Pulpmaster Pro. This converts organic waste into bio fuel.
      Each year, use of the Pulpmaster Pro at this small college produces
      power that:
      prevents 476 tonnes of CO2 from entering the atmosphere
      is equivalent to running 109 cars or 700 houses.
      prevents the disposal of over 25,000 plastic
      bags.
    • http://www.seco.cpa.state.tx.us/energy-sources/biomass/images/manure-biogas.gif
    • Hazardous wastes
      Hazardous wastes have the potential to harm humans or the environment, either now or in the future.
      Examples of hazardous waste are:
      Radioactive substances
      Medical waste (e.g. blood products)
      Heavy metals (e.g. cadmium, lead, mercury)
      Asbestos
    • The average household stores many hazardous substances. Examples of household hazardous waste include:
      Solvent-based paints
      Pesticides and other garden chemicals
      Batteries (for example car, mobile phone or regular household batteries)
      Motor oils (for example from cars or mowers)
      Petrol and kerosene
      Cleaning & polishing chemicals
      Swimming pool or spa bath chemicals
      Pharmaceuticals (all medicines)
      Obsolete computer equipment.
    • What is in a computer?
      On average a computer is:
      23% plastic
      32% ferrous metals,
      18% non-ferrous metals (lead, cadmium, antimony, beryllium, chromium and mercury)
      12% electronic boards (gold, palladium, silver and platinum) and 15% glass.
      Only about 50% of the computer can be recycled, the rest is dumped. The toxicity of the waste is mostly due to the lead, mercury and cadmium. Much of the plastic used contains flame retardants, which makes it difficult to recycle.
    • Incineration
      Incineration is usually done for 3 reasons:
      1. the destruction of waste
      2. the production of energy from waste
      3. the disposal of hazardous waste (scheduled waste)
      An incinerator is used to burn waste until it is reduced to ash.
    • Incinerator
    • Heat generated from incineration can be used to produce electricity (energy recovery).
      Advantages
      Produces no methane, unlike landfill
      A renewable source of energy
      Reduces the volume of waste for final disposal by about 90%
      Yields five times greater useful energy per tonne of waste than energy recovery from landfill
      Converts organic wastes to biologically less active forms
      Suitable for many hazardous materials which should not be sent to landfill
      Disadvantages
      Costs are generally higher than landfill
      Some emissions contain pollutants
      A volume of material, which may be toxic, may still require disposal.
      Highly toxic ash
      Fine particles are emitted into the atmosphere
    • Waste hierarchy
    • Code of Practice 16:
      Waste Management
    • Litter
      Minimisation
      Packaging
      Recycling
      Reusing
    • Generator of waste is to:
      Minimise waste
      Classify waste (hazardous / non-hazardous)
      Segregate waste into recycling bins
      Ensure appropriate storage on site
      Identify appropriate waste management location to dispose of the waste
      Keep receipts from final destination (waste management facility) for 3 years
    • A permit must be held by:
      A generator of hazardous waste
      A collector / transporter of waste
      Anyone who handles medical waste
      Permits to be issued by EAD or Sector Regulator
    • Before waste can be moved from homes and businesses to a landfill, be burned in an incinerator to make energy, or be recycled or treated, it needs to be properly and safely packaged for transportation.
      The waste collector / transporter must:
      Ensure all vehicles are constructed to prevent spillages
      Ensure all containers are well secured on the vehicle
      Have insurance to pay for clean-up in the event of an accident
      Incompatible wastes are not to be mixed
    • Mixed waste… non-hazardous
      Should be sorted into:
      Food / organic waste
      Recyclables
      Non-compostable waste
    • Landfills
      Must have controls over vermin, wind-borne litter, dust, leachates and gases
    • Government
      The government shall organise regular programs to collect household rubbish which is potentially hazardous, e.g. paints, oils, expired pharmaceuticals
    • A manufacturer of HAZMATs must keep a detailed manifest of all movements of substances for 3 years.