Removal of useful components from the soil and addition of other substance, i.e. fertilisers, pesticides, which adversely affect the fertility of soil and kill the various organisms in it, is called soil pollution. Causes of soil pollution: Soil pollution is caused by solid wastes and chemicals. The slag heaps from mines spoil the beauty of mining sites. The major sources of soil pollution are the industries such as earth and paper mills, sugar mills, oil refineries, power plants, chemicals and fertilizer manufacturing units, iron and steel plants, plastic and rubber Industries and many more.
Most Industrial furnaces and thermal power station produce fly ash, which is grey powdery residue of unburnt material, and causes pollution. Our domestic waste included large amount of solid waste. They include food scraps, vegetable remains, packing materials, cans, rags, papers, cinders, ash, broken gadgets, wood, metals, plastics, polythene bags, ceramics, glass, aluminium, rubber leather, construction rubbish bricks, sand and other junk materials.
