wastewater treatment plant on a sunny day
Palabras clave
factory,
modern,
city,
round,
biology,
store,
ecology,
dirty,
pollution,
urban,
circle,
clean,
construction,
turbidity,
clear,
water,
system,
storage,
environment,
plant,
filter,
production,
flow,
pool,
sludge,
industrial,
tank,
waste,
engineering,
view,
steel,
treatment,
purification,
removal,
environmental,
filtration,
purity,
industry,
reservoir,
recycling,
sanitary,
sewage,
sanitation,
utility,
purified