26-04-2014, 02:59 PM
POLLUTION CONTROL
POLLUTION CONTROL.pptx (Size: 156.16 KB / Downloads: 32)
What is pollution
Pollution is the introduction of contaminants into the natural environment that cause adverse change.
Pollution can take the form of chemical substances or energy, such as noise, heat or light.
This pollution can be controlled by some techniques.
Pollution control techniques
Recycling
'Recycling' is a process using materials (waste) into new products to prevent waste of potentially useful materials, reduce the consumption of fresh raw materials.
Reuse
To reuse is to use an item again after it has been used.
Sewage treatment
Sewage treatment is the process of removing contaminants from wastewater and household sewage both runoff (effluents), domestic, commercial and institutional. It includes physical, chemical, and biological processes to remove physical, chemical and biological contaminants.
Industrial wastewater system
Industrial wastewater treatment covers the mechanisms and processes used to treat waters that have been contaminated in some way by anthropogenic industrial or commercial activities prior to its release into the environment or its re-use.