Solid and Hazardous Waste
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Industrial solid waste comes from | mines, agriculture and industry
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| Municipal solid waste is from | your trash from homes and work
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| hazardous waste found in homes | paint products , disinfectants,drain and toilet cleaners, glues and cements, batteries (mercury and cadmium), flee powders, ant and rodent killers, pesticides and weed killers
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| developed countries produce... | 80-90% of world's hazardous waste. The US produces more than any other country.
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| Reasons to reduce our output of solid waste | creating huge amounts of air pollution, green house gasses, degrading land as we make these disposable products. 90% of MSW is recyclable and could be used in some form again which means less resource use.
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| Integrated Waste Management | variety of strategies for both waste reduction and management.
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| What you can do to but back on solid waste... | reduse, reuse and recycle. refuse packaging or bagging when possible. use email and texting when possible instead of paper mail, read newspapers and magazines online, buy products in bulk, buy secondhand items, avoid disposables (paper towel, paper cups)
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| disadvantages of recycling | can cost more than burying it in a landfill, may lose $ for items like glass and plastic, reduce profits for landfill/incinerator owners, inconvenient for some to seperate their recyclables.
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| advantages of incineration | reduces trash volume, less need for landfills, low water pollution, sales of energy reduces cost
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| disadvantages of incineration | expensive to build plant, some air pollution and CO2 emissions, encourages waste production, difficult to find sites because of citizen opposition
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| sanitary landill advantages | little odor, built quickly, low operating costs, can handle large amounts of waste, filled land can be used for other purposes
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| sanitary landill disadvantages | air pollution from taxic gases and trucks, slow decomposition rates, releases greenhouse gasses like methane and CO2, encourages waste production, eventually leaks and contaminates ground water
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| Ways to detoxify hazardous waste | convert to less harmful wastes though chemical reactions, bioremediation, phytoremiation
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| Bioremediation | site is inoculated with army of microorganisms that break down specific hazardous chemicals like PCB's, pesticides and oil. Takes longer but costs less.
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| Phytoremediation | natural or genetically engineered plants absorb, filter and remove contaminants from soil and water. "pollution sponges". This is slow and roots only go so deep.
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| Deep well disposal | liquid hazardous wastes are pumped through a pipe into dry, porous rock far beneath aquifers.64% of U.S. hazardous waste goes here.
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| deep well disposal advantages and disdvantages | ++low cost, easy to do, wastes can often be retrieved if problem, safe in carefully chosen sites. --leaks or spills at surface or corrosion of well, earthquakes and geologic activity, encourages waste
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| Surface impoundments | ponds, pits or laggons where liquid hazourdous waste is stored.
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| Surface impoundments advantages and disdvantages | ++ low operating/constructin costs, built quickly, wastes can be retrieved. --groundwater contamination from leaky liners, overflow from flooding, air pollution from VOC's, encourages waste production, geologic activity
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| Hazardous wastes regulated by this law | Resource Conservation & Recovery Act (RCRA): controls hazardous waste with a cradle to grave system.
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| Comprehensive Environmental Response, Compensation & Liability Act (CERCLA): | Superfund, designed to identify and clean upabandoned hazardous waste dumpsites.
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| brownfields are | abandoned industrial and commercial sites like factories, junkyards, gas stations
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Created by:
sallywentzell
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