hazardous waste mgt

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Hazardous waste management:

Hazardous waste management Pavani Asst Prof GRCP, Hyd

Hazardous waste generators:

Hazardous waste generators All industries generate some hazardous waste The largest quantities come from four sectors: Chemical and pharmaceutical manufacture Petroleum and coal products Metal working, refining and fabrication Rubber and plastics manufacture

Hazardous Wastes: Types :

Hazardous Wastes: Types Contains at least one toxic compound Catches fire easily Reactive or explosive Corrodes metal containers

Characteristic Wastes:

5 Characteristic Wastes Ignitable Wastes (flashpoint is less than 140 0 F) includes oxidizers… Corrosive Wastes (pH less than or equal to 2 or greater than or equal to 12.5) Reactive Wastes (water reactives, normally unstable materials, cyanides & sulfides…) TCLP Wastes (Toxicity Characteristic Leaching Procedure)

Some common wastes and industrial sources:

Some common wastes and industrial sources Flammable eg solvents - from chemical manufacturers, laundries & dry cleaners, metal plating, tanneries, print shops etc Corrosive eg acids and alkalis - from cleaning & maintenance, equipment repair, vehicle body shops etc Reactive eg bleaches and oxidisers - from chemical manufacturers, laboratories etc Toxic and eco-toxic eg heavy metals, pesticides, cyanides from metals manufacturing, photographic processing, pesticide end users etc

Listed Wastes:

7 Listed Wastes F -listed wastes are from non-specific sources Example: halogenated solvents used to degrease equipment K -listed wastes are from specific sources Example: product washwaters from the production of dinitrotoluene via nitration of toluene U -listed wastes are toxic wastes P -listed wastes are acutely hazardous wastes

Some common hazardous chemicals:

Some common hazardous chemicals Lead paint, gasoline, pipes, accumulates in soil and water neurological damage, slows brain development, kidney disorders; children especially vulnerable Mercury paint, batteries, old thermometers, industrial processes, combustion of coal, dental fillings, contaminated historical mining sites damages brain, kidneys, developing fetus, learning disabilities, death with high doses

Some common hazardous chemicals:

Some common hazardous chemicals Arsenic treated wood, industrial processes, contaminated soil and water impairs organ, heart, and blood functions; damages nervous system PCBs (Ploycholorinated biphenyls) industrial chemical (used in fire retartands, lubricants, insulation for electrical transformers, some printing inks) carcinogenic, birth defects, lower IQ, learning disabilities, impairs neurological development

What Harmful Chemicals Are in Your Home?:

What Harmful Chemicals Are in Your Home? What Harmful Chemicals Are in Your Home? Cleaning • Disinfectants • Drain, toilet, and window cleaners • Spot removers • Septic tank, cleaners Paint • Latex and oil-based paints • Paint thinners, solvents, and strippers • Stains, varnishes, and lacquers • Wood preservatives • Artist paints and inks General • Dry cell batteries (mercury and cadmium) • Glues and cements Gardening • Pesticides • Weed killers • Ant and rodent killers • Flea powders Automotive • Gasoline • Used motor oil • Antifreeze • Battery acid • Solvents • Brake and transmission fluid • Rust inhibitor and rust remover

Dealing with Hazardous Wastes:

Dealing with Hazardous Wastes

Detoxifying and Removing Wastes:

Detoxifying and Removing Wastes Physical methods Chemical methods Bioremediation Phytoremediation Plasma incineration

Deep-well Disposal:

Deep-well Disposal

Hazardous Waste Landfill:

Hazardous Waste Landfill

Surface Impoundments: Trade-offs:

Surface Impoundments: Trade-offs

PowerPoint Presentation:

“Dilution is not the Solution” International ban on 12 persistent organic pollutants (POPs) (the dirty dozen ) tanneries textile dyeing plants dyestuff producers metal working and electroplating shops foundries automobile service shops and gas stations lead-acid battery manufacturing/recycling chemical industries/laboratories paint shops printers photographic processors dry cleaners

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