Unit 09 Preserving the Environment Lesson 8 Looking back project

Thermal pollution Thermal pollution- causing sources is due to the cooling water disposing machinery equipment of thermal power plants, atomic, mechanical, … In some cases, thermal pollu[r]

UNIT 9 : PRESERVING THE ENVIRONMENT

What is soil pollution ?

Soil pollution is all the phenomena do environmental soil

contamination by polluting agents, when their

concetration is increased excessively load of soils,

especially the solid wastes of mining industry

In other words : environmental pollution is a result of human activities alter the ecological factors of the biome living in soil

The cause of land pollution

• Agriculture activities : the use of pesticides, plant protection drugs, growth stimulants

• Buried, throw away garbage not reasonable.

• Contaminated surface water seeping into the soil.

• Deforestation and not additional reforestation.

• Mining and extraction industries polluting heavy metals: Cadimi(Cd), Mercury(Hg), Niken(Ni), Asen(As)…

Radioactivity pollution

• Sources of soil contamination by radioactivity

is the scrap of the atomic center, the atomic power plant, nuclear weapon test.

Thermal pollution

Thermal pollution- causing sources is due to the cooling water disposing machinery equipment of thermal power plants, atomic, mechanical, … In some cases, thermal pollution is also caused by forest fires, that killed many creatures travel the land, doing environmental damage the land and make the soil lost.

The contamination by biological agents

The contamination by biological is due to the method

of pouring waste removal unsanitary or use fresh manure, fresh pond mud living waste fertilizer

directly into the ground

Affecting human health due to contact with the ground line, due

to the evaporation of soil contaminants or toxins through the

food chain.

Infuse the water circuit causing pollution of

water resources.

Land erosion the decrease of soil fertility the lack of agricultural land and reduced crop productivity

Loss of some animals that live in soil destruction

of vegetation.

How to overcome and reduce land

pollution ?

• Treatment of waste before burial.

• Recycling some types of garbage , plastic bottles.

• Planting the tree genotypes resistant diseases.

• The use of biotechnology in industry

Reduce the use of chemical drugs

• Keep the surface is not contaminated and sewage treatment plant before release.

• Ensure the safety of the radioactive factory