Nitrogen is one of the principal nutrients found in wastewater. Discharges containing nitrogen can severely damage a water resource and it’s associated ecosystem. As a result, several chemical, physical and biological processes have been used to promote the removal of nitrogen. Nitrification and denitrification are two suggested processes that significantly reduce nitrogen levels in wastewater. …
The rapidly growing and small floating aquatic plants of the botanical family of Lemnaceae are capable of accumulating nutrients and minerals from wastewater. The latter are finally removed from the system as the plants are harvested from the pond surface. Because of their comparatively high productivity and nutritional value, particularly their high content of valuable protein, they provide an …
This report is the product of a five-month Centre Internship at the International Development Research Centre - Cities Feeding People Programme Initiative (CFP) during the summer of 1999. The report was commissioned to provide CFP team members an overview of emergent trends in environmentally sound and economically viable approaches to wastewater management. The subject of the report relates to …
On-site sanitation systems dispose of human excreta, with or without treatment, on the residents' housing plot. Examples include pit latrines and septic tanks with drainage fields. This study reviews the risks to health posed by groundwater contamination from on-site sanitation (particularly latrines). Detailed understanding of groundwater contamination is complicated by a host of factors, …
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