This research aimed to examine the environmental factors determining the rates of evaporation,
a natural phenomenon contributing to the treatment of wastewater of 5-consecutive oxidation ponds
of the King’s Royally Initiated Laem Phak Bia Environmental Research and Development Project.
Data collected from the 17th of April to 30th of May 2019 by US Class A Evaporation Pan revealed
that the sedimentation pond (Pond 1) has the highest rate, 7.22 mm d-1
, the oxidation pond 1 (Pond 2),
5.70 mm d-1
, the oxidation pond 3 (Pond 4), 5.56 mm d-1
, the stabilization pond (Pond 5), mm d-1
,
the reference pond at 5.07 mm d-1 and the oxidation pond 2 (Pond 3), 3.59 mm d-1
. Concluding the
evaporation in domestic wastewater treatment plants is characterized by 1) heat generated from
short and long wave radiation emitted by earth and the sun, 2) local wind profiles ofthe area affected
the height differences of the roughness length, and 3) heat generated by the respiration and
digestion process of microbial activities and other grey body contaminants.Etc...
Keywords
Wastewater; Wind velocity; Oxidation ponds; Evaporation; Nature by nature process