enough to treat 34% of the total wastewater production of the
university, corresponding to 18.250 m3 per year (50 m3/day), the
same as 225 equivalent inhabitants. The daily organic load
corresponds to 160 kg BOD/Ha$day. The total water surface is
2.686 m2, the average depth is 1.27 m for the first and 1.03 m for
the second, and the maximum depth is 2.5 m. The hydraulic
retention time resulting is 48 days for the first pond and 21 days
for the second.