Landfilling without treatment can lead to pollution in the surrounding environment such as groundwater, soil and air. When organic wastes in a landfill are decayed, it will generate methane gas (CH4), which constitutes 20% of the total anthropogenic methane emissions. This gas is very flammable, explosive and able to replace oxygen (O2) in confined places. The poor running of landfills is hazard for people because vectors such as flies and rats will be able to transport infectious diseases. Management of leachate is always a major concern in landfilling which correlated to the rainfall amount. It can migrate to surface waters and groundwater especially in older landfills without liners causing contamination. Landfills could be a source of noisiness, bad odor and reduced local property value for population live nearby the locations. Lack of evidence limits our ability to find out the whole story behind landfill environmental health impacts (Giusti, 2009). We can control all these negative impacts in landfills by the proper design and engineering and this is barely existed especially in developing countries where most of them use dumps for land disposal due to the poverty, which get the population attention rather than environmental improvement. It is very familiar there to see heaps of dumps scattered around metropolitan areas (Ayomoh, Oke, Adedeji, & Charles-Owaba, 2008). Thermal treatment and in particular incineration has received citizen oppositions all over the world due to beliefs that incineration threatens environmental health and it is incompatible with reduction of waste. However, it is not wise to neglect this technique in favor of other waste forms including landfilling if the latter environmental health damaging impact larger than that of thermal treatment techniques (Assamoi & Lawryshyn, 2012;
Landfilling without treatment can lead to pollution in the surrounding environment such as groundwater, soil and air. When organic wastes in a landfill are decayed, it will generate methane gas (CH4), which constitutes 20% of the total anthropogenic methane emissions. This gas is very flammable, explosive and able to replace oxygen (O2) in confined places. The poor running of landfills is hazard for people because vectors such as flies and rats will be able to transport infectious diseases. Management of leachate is always a major concern in landfilling which correlated to the rainfall amount. It can migrate to surface waters and groundwater especially in older landfills without liners causing contamination. Landfills could be a source of noisiness, bad odor and reduced local property value for population live nearby the locations. Lack of evidence limits our ability to find out the whole story behind landfill environmental health impacts (Giusti, 2009). We can control all these negative impacts in landfills by the proper design and engineering and this is barely existed especially in developing countries where most of them use dumps for land disposal due to the poverty, which get the population attention rather than environmental improvement. It is very familiar there to see heaps of dumps scattered around metropolitan areas (Ayomoh, Oke, Adedeji, & Charles-Owaba, 2008). Thermal treatment and in particular incineration has received citizen oppositions all over the world due to beliefs that incineration threatens environmental health and it is incompatible with reduction of waste. However, it is not wise to neglect this technique in favor of other waste forms including landfilling if the latter environmental health damaging impact larger than that of thermal treatment techniques (Assamoi & Lawryshyn, 2012;