Title | The effect of air supply on nitrogen removal using a biological filter proposed for ventilated pit latrines |
Publication Type | Journal Article |
Year of Publication | 2011 |
Authors | Coetzee, MAA, Van der Merwe, MPRoux-, Badenhorst, J |
Pagination | p. 281 - 288 : 7 fig., 2 tab. |
Date Published | 2011-07-01 |
Keywords | biological filtration, denitrification, nitrification, nitrogen, sdisan, ventilated improved pit latrines |
Abstract |
Pit latrines are the most commonly used sanitation systems in many developing countries. Various researchers have reported elevated nitrate concentrations in groundwater in the vicinity of pit latrines and this could pose a serious health risk to the users of the water source. Faecal sludge from pit latrines contains high concentrations of nitrogen and organic matter (3-5 g∙ℓ−1 N and 20-50 g∙ℓ−1 COD); however, it is produced at a very low rate (1.5 ℓ∙capita−1∙d−1) relative to that of waterborne sewage systems. A pit latrine basically only confines the waste and no real treatment takes place. In this research the nitrogen was removed in a biological filter using a combination of nitrification and denitrification processes. |
Notes | 36 ref. |
Custom 1 | 321.4 |