Waste water in open air evaporation pools. Waste water flow to the sewer. Fecal sewage and drainage of technical water. Wastewater treatment plant
Palabras clave
landscape,
water,
river,
sky,
nature,
house,
travel,
mountain,
sea,
lake,
village,
building,
summer,
blue,
beach,
green,
island,
stone,
panorama,
rock,
boat,
view,
sewage,
pool,
open,
pollution,
sewer,
flow,
dirty,
urban,
environment,
industrial,
city,
bathing,
prohibited,
waste,
plant,
ecology,
technical,
drainage,
industry,
background,
system,
duck pond,
purification
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