• Temesgen Gebreyesus Abebe

The treatment of sludge is not usually effective in reducing number of pathogens because the infections dose for some of these pathogens may be as low as one particle (virus). This leads to public health risk concern that need appropriate measures. In line with this, when sludge is applied to land for agricultural use and landfill, pathogens can survive from days to years based on environmental conditions. Due to their long survival shallow aquifers can became contaminated and depending on aquifer orientation pathogens may travel significant distance from the sludge disposal site. So that communities which use ground water for domestic consumption can be exposed to these pathogens, leading to potential disease outbreaks. On the other hand, land disposal method of sewage sludge is one of the most preferable ways to recycle plant nutrient in sewage sludge. Nutrient present in sewage sludge are also useful to the soil microbial biomass. This paper focuses on possible exposer and human health risk of land application of sewage sludge.

sewage sludge, health risk, sewage disposal, land application

"HUMAN HEALTH RISKS OF LAND APPLICATION OF SEWAGE SLUDGE -REVIEW ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.19-22, June 2019, Available :http://www.jetir.org/papers/JETIR1907M04.pdf

"HUMAN HEALTH RISKS OF LAND APPLICATION OF SEWAGE SLUDGE -REVIEW ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp19-22, June 2019, Available at : http://www.jetir.org/papers/JETIR1907M04.pdf