Nutrients/Description: Difference between revisions
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N discharges to surface water (''E<sub>sw</sub><sup>N</sup>'' in kg per person per year) are calculated as follows ([[Van Drecht et al., 2009]]; [[Morée et al., 2013]]): | N discharges to surface water (''E<sub>sw</sub><sup>N</sup>'' in kg per person per year) are calculated as follows ([[Van Drecht et al., 2009]]; [[Morée et al., 2013]]): | ||
: {{FormulaAndTableTemplate|Formula1_N}} | |||
where | where | ||
*''E<sub>hum</sub><sup>N</sup>'' is human N emissions (kg per person per year), | |||
* D is the proportion of the total population connected to public sewerage systems (no dimension), | |||
*R N is the overall removal of N through wastewater treatment (no dimension). | |||
Total P emissions to surface water are calculated in a similar way, but also include estimates of P emissions to surface water resulting from the use of P-based dishwasher and laundry detergents. Nutrient removal by wastewater treatment R is based on the relative contribution of four classes of treatment (none, primary, secondary and tertiary treatment). D is calculated from the proportion of households with improved sanitation. D and R by treatment class are scenario variables. | Total P emissions to surface water are calculated in a similar way, but also include estimates of P emissions to surface water resulting from the use of P-based dishwasher and laundry detergents. Nutrient removal by wastewater treatment R is based on the relative contribution of four classes of treatment (none, primary, secondary and tertiary treatment). D is calculated from the proportion of households with improved sanitation. D and R by treatment class are scenario variables. | ||
Soil nutrient budget | Soil nutrient budget | ||
Revision as of 16:11, 20 May 2014
Parts of Nutrients/Description
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