Contamination in the natural environment by contaminants or pollutants is known as pollution. Types of pollutions are noise, energy, heat, light and chemical substances. Pollution is classified into 2 categories and they are point source or nonpoint source pollution. Pollution control explains or describes the activities that reduce the amount of pollution generated by a process. Pollution can be controlled in the environment by refuse disposal systems such as sanitary landfills, emission control systems for automobiles, sedimentation tank.
Last date updated on June, 2014