Презентация на тему Toxic Waste

material that is dangerous to any life form, including

humans, animals and plant life.
Toxic waste can pollute the air, land and water.
Toxic waste is defined as liquid, solid, contained gas or sludge waste that contains properties that are dangerous or potentially harmful to human health or the environment.

Toxic waste

under the Resource Conservation and Recovery Act, according to

the EPA handbook on toxic waste.
Despite containing toxic and dangerous elements, most waste does not end up being monitored and controlled under the RCRA.

REGULATION

what is considered a waste, hazardous waste generally has

one or more of these four characteristics:
flammability
corrosiveness
reactivity
toxicity.

TYPES OF WASTe

and public health.
For humans: contact with toxic chemical waste

from laboratories may result in skin burns and disfigurement.

Exposure to carbon monoxide may cause headache and trouble thinking.
Toxic wastes such as lead, mercury or cadmium may cause liver or kidney damage, central nervous system damage, cancer and birth defects.

effects

for food, resulting in damage to their central nervous

system.
Fish accumulate toxins in their bodies from contaminated water. As a result these contaminants enter the food chain.
Lead absorption in plants may lead to stunted growth, chlorosis and blackening of root system. This inhibits photosynthesis, affects membrane structure and permeability in plants.

in stream runoff, in groundwater that supplies drinking water,

or in floodwaters.
Some toxins, such as mercury, persist in the environment and accumulate.

solution

by incineration at high temperatures, which is expensive.
However,

if the waste contains heavy metals or radioactive isotopes, these must be separated and stored, as they cannot be destroyed.

dumps is being sent illegally to Africa in flagrant

breach of this country’s obligation to ensure its rapidly growing mountain of defunct televisions, computers and gadgets are disposed of safely.