Hartari offers tutorial advice, and a video on the simulation of the pit latrine impact on nearby water wells.
This tutorial cover the following parts ...
1. Review of the Boundary conditions
2. Set up of the transport model and species
3. Hydraulic (static and dynamic) parameters assigned
4. Time discretization for flow and transport
5. Output control
6. Groundwater flow regime, followed by
7. Contaminant transport simulation
Relevant considerations:
1. No reactions such as sorption or decay were considered.
2. Well pumps 0.25 l per s that averages 21.6 m3 per day equivalent to water consumption of 270 inhabitants assuming a water demand of 80 l per s per person. This water demand is low because there is no water-supply system.
3. Each pit latrine loss 70 l per d to the groundwater flow system. This rate is 8.1 e-7m per s over an area of 1m by 1m.
4. Concentration of Nitrates at source was considered to be 1,200 mg per l.
Read on for blogging information.
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