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the environmental disasters are classified into two major categories1. natural disasters like earthquakes tsunami landslides
primary effects1. nuclear contamination2. biological contamination3. chemical
1. the combination of rapid industrial growth lack of regulations inadequate supervision of safety measures by the authorities
1. hazard is an extreme event whereas disaster is its consequence.2. a hazard can occur without human
the word disaster is believed to be originating from the french word disastre which is a combination of two words des meaning bad and astre meaning
hazards is an event whether natural or man-made that has potential for causing injury loss of life and damage to the property or the environment. it
it requires the existence of a reliable market for the recovered materials. although the recovery of certain materials such as aluminium cans large
commonly adapted different disposal methods by the municipal corporations area open dumpingb land fillingc sanitary land
there are three methods of collections1. kerbside collectionin this collection system the refuse is brought in containers and
the improper handling and transfer of the solid wastes results in various health and environmental hazards such as1. spoilage of
the main causes for the rapid growth in the quantity of solid wastes are-i over population the ever increasing population is
wastes are classified into following categories1. biodegradable wastesthe waste materials that can be degraded by micro-organisms
all solid semi-solid wastes arising from human and animals activities except human excreta and sullage liquid wastes from bathrooms kitchens etc. are
1. noise producing industries railway stations and aerodromes should be located away from the residential
1. effect on general health noise pollution increases the rate of heart beat constriction of
1. road traffic of all the sources of noise pollution road traffic is the most prevalent and perhaps the most damaging source
the sound levels of power intensity and pressure are the physical effects which the human ear receives it is not however what the person perceives.
it is defined as the amount of heat liberated when one unit mass of fuel is burnt and the products of combustion are allowed to
it is defined as the total amount of heat produced when unit massvolume of the fuel has been burnt completely and the products have been cooled to
calorific value is one of the most important characteristics of a fuel. it judges the efficiency of fuel.calorific value is defined as the total
bomb calorimeter is used to determine the calorific value of solid and liquid fuels.construction it consists of
the term green house effect was first introduced by j. fourier in 1827. the green house effects are the rise in temperature of earth because certain
the gaseous pollutants can be controlled through the techniques of combustion absorption adsorption and cold trapping.a combustion though
particulate matter in gaseous effluents consists of particles of size ranging from 0.1 um to 100 um. the device selection is based upon physical and
the best way to maintain quality of air and pollutants emissions is by using less polluting fuels and processes. following can be taken to control